/* ************************************************************************** */ /* * For conditions of distribution and use, * */ /* * see copyright notice in libmng.h * */ /* ************************************************************************** */ /* * * */ /* * project : libmng * */ /* * file : libmng_chunk_io.c copyright (c) 2000 G.Juyn * */ /* * version : 1.0.2 * */ /* * * */ /* * purpose : Chunk I/O routines (implementation) * */ /* * * */ /* * author : G.Juyn * */ /* * web : http://www.3-t.com * */ /* * email : mailto:info@3-t.com * */ /* * * */ /* * comment : implementation of chunk input/output routines * */ /* * * */ /* * changes : 0.5.1 - 05/01/2000 - G.Juyn * */ /* * - cleaned up left-over teststuff in the BACK chunk routine * */ /* * 0.5.1 - 05/04/2000 - G.Juyn * */ /* * - changed CRC initialization to use dynamic structure * */ /* * (wasn't thread-safe the old way !) * */ /* * 0.5.1 - 05/06/2000 - G.Juyn * */ /* * - filled in many missing sequence&length checks * */ /* * - filled in many missing chunk-store snippets * */ /* * 0.5.1 - 05/08/2000 - G.Juyn * */ /* * - added checks for running animations * */ /* * - filled some write routines * */ /* * - changed strict-ANSI stuff * */ /* * 0.5.1 - 05/10/2000 - G.Juyn * */ /* * - filled some more write routines * */ /* * 0.5.1 - 05/11/2000 - G.Juyn * */ /* * - filled remaining write routines * */ /* * - fixed read_pplt with regard to deltatype * */ /* * - added callback error-reporting support * */ /* * - added pre-draft48 support (short MHDR, frame_mode, LOOP) * */ /* * 0.5.1 - 05/12/2000 - G.Juyn * */ /* * - changed trace to macro for callback error-reporting * */ /* * - fixed chunk-storage bit in several routines * */ /* * 0.5.1 - 05/13/2000 - G.Juyn * */ /* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */ /* * - added TERM animation object pointer (easier reference) * */ /* * - supplemented the SAVE & SEEK display processing * */ /* * * */ /* * 0.5.2 - 05/18/2000 - G.Juyn * */ /* * - B004 - fixed problem with MNG_SUPPORT_WRITE not defined * */ /* * also for MNG_SUPPORT_WRITE without MNG_INCLUDE_JNG * */ /* * 0.5.2 - 05/19/2000 - G.Juyn * */ /* * - cleaned up some code regarding mixed support * */ /* * 0.5.2 - 05/20/2000 - G.Juyn * */ /* * - implemented JNG support * */ /* * 0.5.2 - 05/24/2000 - G.Juyn * */ /* * - added support for global color-chunks in animation * */ /* * - added support for global PLTE,tRNS,bKGD in animation * */ /* * - added support for SAVE & SEEK in animation * */ /* * 0.5.2 - 05/29/2000 - G.Juyn * */ /* * - changed ani_create calls not returning object pointer * */ /* * - create ani objects always (not just inside TERM/LOOP) * */ /* * 0.5.2 - 05/30/2000 - G.Juyn * */ /* * - added support for delta-image processing * */ /* * 0.5.2 - 05/31/2000 - G.Juyn * */ /* * - fixed up punctuation (contributed by Tim Rowley) * */ /* * 0.5.2 - 06/02/2000 - G.Juyn * */ /* * - changed SWAP_ENDIAN to BIGENDIAN_SUPPORTED * */ /* * 0.5.2 - 06/03/2000 - G.Juyn * */ /* * - fixed makeup for Linux gcc compile * */ /* * * */ /* * 0.5.3 - 06/12/2000 - G.Juyn * */ /* * - added processing of color-info on delta-image * */ /* * 0.5.3 - 06/13/2000 - G.Juyn * */ /* * - fixed handling of empty SAVE chunk * */ /* * 0.5.3 - 06/17/2000 - G.Juyn * */ /* * - changed to support delta-images * */ /* * - added extra checks for delta-images * */ /* * 0.5.3 - 06/20/2000 - G.Juyn * */ /* * - fixed possible trouble if IEND display-process got * */ /* * broken up * */ /* * 0.5.3 - 06/21/2000 - G.Juyn * */ /* * - added processing of PLTE & tRNS for delta-images * */ /* * - added administration of imagelevel parameter * */ /* * 0.5.3 - 06/22/2000 - G.Juyn * */ /* * - implemented support for PPLT chunk * */ /* * 0.5.3 - 06/26/2000 - G.Juyn * */ /* * - added precaution against faulty iCCP chunks from PS * */ /* * 0.5.3 - 06/29/2000 - G.Juyn * */ /* * - fixed some 64-bit warnings * */ /* * * */ /* * 0.9.1 - 07/14/2000 - G.Juyn * */ /* * - changed pre-draft48 frame_mode=3 to frame_mode=1 * */ /* * 0.9.1 - 07/16/2000 - G.Juyn * */ /* * - fixed storage of images during mng_read() * */ /* * - fixed support for mng_display() after mng_read() * */ /* * 0.9.1 - 07/19/2000 - G.Juyn * */ /* * - fixed several chunk-writing routines * */ /* * 0.9.1 - 07/24/2000 - G.Juyn * */ /* * - fixed reading of still-images * */ /* * * */ /* * 0.9.2 - 08/05/2000 - G.Juyn * */ /* * - changed file-prefixes * */ /* * * */ /* * 0.9.3 - 08/07/2000 - G.Juyn * */ /* * - B111300 - fixup for improved portability * */ /* * 0.9.3 - 08/08/2000 - G.Juyn * */ /* * - fixed compiler-warnings from Mozilla * */ /* * 0.9.3 - 08/09/2000 - G.Juyn * */ /* * - added check for simplicity-bits in MHDR * */ /* * 0.9.3 - 08/12/2000 - G.Juyn * */ /* * - fixed check for simplicity-bits in MHDR (JNG) * */ /* * 0.9.3 - 08/12/2000 - G.Juyn * */ /* * - added workaround for faulty PhotoShop iCCP chunk * */ /* * 0.9.3 - 08/22/2000 - G.Juyn * */ /* * - fixed write-code for zTXt & iTXt * */ /* * - fixed read-code for iTXt * */ /* * 0.9.3 - 08/26/2000 - G.Juyn * */ /* * - added MAGN chunk * */ /* * 0.9.3 - 09/07/2000 - G.Juyn * */ /* * - added support for new filter_types * */ /* * 0.9.3 - 09/10/2000 - G.Juyn * */ /* * - fixed DEFI behavior * */ /* * 0.9.3 - 10/02/2000 - G.Juyn * */ /* * - fixed simplicity-check in compliance with draft 81/0.98a * */ /* * 0.9.3 - 10/10/2000 - G.Juyn * */ /* * - added support for alpha-depth prediction * */ /* * 0.9.3 - 10/11/2000 - G.Juyn * */ /* * - added support for nEED * */ /* * 0.9.3 - 10/16/2000 - G.Juyn * */ /* * - added support for JDAA * */ /* * 0.9.3 - 10/17/2000 - G.Juyn * */ /* * - fixed support for MAGN * */ /* * - implemented nEED "xxxx" (where "xxxx" is a chunkid) * */ /* * - added callback to process non-critical unknown chunks * */ /* * - fixed support for bKGD * */ /* * 0.9.3 - 10/23/2000 - G.Juyn * */ /* * - fixed bug in empty PLTE handling * */ /* * * */ /* * 0.9.4 - 11/20/2000 - G.Juyn * */ /* * - changed IHDR filter_method check for PNGs * */ /* * 0.9.4 - 1/18/2001 - G.Juyn * */ /* * - added errorchecking for MAGN methods * */ /* * - removed test filter-methods 1 & 65 * */ /* * * */ /* * 0.9.5 - 1/25/2001 - G.Juyn * */ /* * - fixed some small compiler warnings (thanks Nikki) * */ /* * * */ /* * 1.0.2 - 05/05/2000 - G.Juyn * */ /* * - B421427 - writes wrong format in bKGD and tRNS * */ /* * 1.0.2 - 06/20/2000 - G.Juyn * */ /* * - B434583 - compiler-warning if MNG_STORE_CHUNKS undefined * */ /* * * */ /* ************************************************************************** */ #include "libmng.h" #include "libmng_data.h" #include "libmng_error.h" #include "libmng_trace.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #include "libmng_objects.h" #include "libmng_object_prc.h" #include "libmng_chunks.h" #ifdef MNG_CHECK_BAD_ICCP #include "libmng_chunk_prc.h" #endif #include "libmng_memory.h" #include "libmng_display.h" #include "libmng_zlib.h" #include "libmng_pixels.h" #include "libmng_chunk_io.h" #if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) #pragma option -A /* force ANSI-C */ #endif /* ************************************************************************** */ /* * * */ /* * CRC - Cyclic Redundancy Check * */ /* * * */ /* * The code below is taken directly from the sample provided with the * */ /* * PNG specification. * */ /* * (it is only adapted to the library's internal data-definitions) * */ /* * * */ /* ************************************************************************** */ /* Make the table for a fast CRC. */ void make_crc_table (mng_datap pData) { mng_uint32 iC; mng_int32 iN, iK; for (iN = 0; iN < 256; iN++) { iC = (mng_uint32) iN; for (iK = 0; iK < 8; iK++) { if (iC & 1) iC = 0xedb88320U ^ (iC >> 1); else iC = iC >> 1; } pData->aCRCtable [iN] = iC; } pData->bCRCcomputed = MNG_TRUE; } /* Update a running CRC with the bytes buf[0..len-1]--the CRC should be initialized to all 1's, and the transmitted value is the 1's complement of the final running CRC (see the crc() routine below). */ mng_uint32 update_crc (mng_datap pData, mng_uint32 iCrc, mng_uint8p pBuf, mng_int32 iLen) { mng_uint32 iC = iCrc; mng_int32 iN; if (!pData->bCRCcomputed) make_crc_table (pData); for (iN = 0; iN < iLen; iN++) iC = pData->aCRCtable [(iC ^ pBuf [iN]) & 0xff] ^ (iC >> 8); return iC; } /* Return the CRC of the bytes buf[0..len-1]. */ mng_uint32 crc (mng_datap pData, mng_uint8p pBuf, mng_int32 iLen) { return update_crc (pData, 0xffffffffU, pBuf, iLen) ^ 0xffffffffU; } /* ************************************************************************** */ /* * * */ /* * Routines for swapping byte-order from and to graphic files * */ /* * (This code is adapted from the libpng package) * */ /* * * */ /* ************************************************************************** */ #ifndef MNG_BIGENDIAN_SUPPORTED /* ************************************************************************** */ mng_uint32 mng_get_uint32 (mng_uint8p pBuf) { mng_uint32 i = ((mng_uint32)(*pBuf) << 24) + ((mng_uint32)(*(pBuf + 1)) << 16) + ((mng_uint32)(*(pBuf + 2)) << 8) + (mng_uint32)(*(pBuf + 3)); return (i); } /* ************************************************************************** */ mng_int32 mng_get_int32 (mng_uint8p pBuf) { mng_int32 i = ((mng_int32)(*pBuf) << 24) + ((mng_int32)(*(pBuf + 1)) << 16) + ((mng_int32)(*(pBuf + 2)) << 8) + (mng_int32)(*(pBuf + 3)); return (i); } /* ************************************************************************** */ mng_uint16 mng_get_uint16 (mng_uint8p pBuf) { mng_uint16 i = (mng_uint16)(((mng_uint16)(*pBuf) << 8) + (mng_uint16)(*(pBuf + 1))); return (i); } /* ************************************************************************** */ void mng_put_uint32 (mng_uint8p pBuf, mng_uint32 i) { *pBuf = (mng_uint8)((i >> 24) & 0xff); *(pBuf+1) = (mng_uint8)((i >> 16) & 0xff); *(pBuf+2) = (mng_uint8)((i >> 8) & 0xff); *(pBuf+3) = (mng_uint8)(i & 0xff); } /* ************************************************************************** */ void mng_put_int32 (mng_uint8p pBuf, mng_int32 i) { *pBuf = (mng_uint8)((i >> 24) & 0xff); *(pBuf+1) = (mng_uint8)((i >> 16) & 0xff); *(pBuf+2) = (mng_uint8)((i >> 8) & 0xff); *(pBuf+3) = (mng_uint8)(i & 0xff); } /* ************************************************************************** */ void mng_put_uint16 (mng_uint8p pBuf, mng_uint16 i) { *pBuf = (mng_uint8)((i >> 8) & 0xff); *(pBuf+1) = (mng_uint8)(i & 0xff); } /* ************************************************************************** */ #endif /* !MNG_BIGENDIAN_SUPPORTED */ /* ************************************************************************** */ /* * * */ /* * Helper routines to simplify chunk-data extraction * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_READ_PROCS /* ************************************************************************** */ mng_uint8p find_null (mng_uint8p pIn) { mng_uint8p pOut = pIn; while (*pOut) /* the read_graphic routine has made sure there's */ pOut++; /* always at least 1 zero-byte in the buffer */ return pOut; } /* ************************************************************************** */ mng_retcode inflate_buffer (mng_datap pData, mng_uint8p pInbuf, mng_uint32 iInsize, mng_uint8p *pOutbuf, mng_uint32 *iOutsize, mng_uint32 *iRealsize) { mng_retcode iRetcode = MNG_NOERROR; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INFLATE_BUFFER, MNG_LC_START) #endif if (iInsize) /* anything to do ? */ { *iOutsize = iInsize * 3; /* estimate uncompressed size */ /* and allocate a temporary buffer */ MNG_ALLOC (pData, *pOutbuf, *iOutsize) do { mngzlib_inflateinit (pData); /* initialize zlib */ /* let zlib know where to store the output */ pData->sZlib.next_out = *pOutbuf; /* "size - 1" so we've got space for the zero-termination of a possible string */ pData->sZlib.avail_out = *iOutsize - 1; /* ok; let's inflate... */ iRetcode = mngzlib_inflatedata (pData, iInsize, pInbuf); /* determine actual output size */ *iRealsize = (mng_uint32)pData->sZlib.total_out; mngzlib_inflatefree (pData); /* zlib's done */ if (iRetcode == MNG_BUFOVERFLOW) /* not enough space ? */ { /* then get some more */ MNG_FREEX (pData, *pOutbuf, *iOutsize) *iOutsize = *iOutsize + iInsize; MNG_ALLOC (pData, *pOutbuf, *iOutsize) } } /* repeat if we didn't have enough space */ while ((iRetcode == MNG_BUFOVERFLOW) && (*iOutsize < 20 * iInsize)); if (!iRetcode) /* if oke ? */ *((*pOutbuf) + *iRealsize) = 0; /* then put terminator zero */ } else { *pOutbuf = 0; /* nothing to do; then there's no output */ *iOutsize = 0; *iRealsize = 0; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INFLATE_BUFFER, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ #endif /* MNG_INCLUDE_READ_PROCS */ /* ************************************************************************** */ /* * * */ /* * Helper routines to simplify chunk writing * */ /* * * */ /* ************************************************************************** */ /* B004 */ #ifdef MNG_INCLUDE_WRITE_PROCS /* B004 */ /* ************************************************************************** */ mng_retcode deflate_buffer (mng_datap pData, mng_uint8p pInbuf, mng_uint32 iInsize, mng_uint8p *pOutbuf, mng_uint32 *iOutsize, mng_uint32 *iRealsize) { mng_retcode iRetcode = MNG_NOERROR; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DEFLATE_BUFFER, MNG_LC_START) #endif if (iInsize) /* anything to do ? */ { *iOutsize = (iInsize * 5) >> 2; /* estimate compressed size */ /* and allocate a temporary buffer */ MNG_ALLOC (pData, *pOutbuf, *iOutsize) do { mngzlib_deflateinit (pData); /* initialize zlib */ /* let zlib know where to store the output */ pData->sZlib.next_out = *pOutbuf; pData->sZlib.avail_out = *iOutsize; /* ok; let's deflate... */ iRetcode = mngzlib_deflatedata (pData, iInsize, pInbuf); /* determine actual output size */ *iRealsize = pData->sZlib.total_out; mngzlib_deflatefree (pData); /* zlib's done */ if (iRetcode == MNG_BUFOVERFLOW) /* not enough space ? */ { /* then get some more */ MNG_FREEX (pData, *pOutbuf, *iOutsize) *iOutsize = *iOutsize + (iInsize >> 1); MNG_ALLOC (pData, *pOutbuf, *iOutsize) } } /* repeat if we didn't have enough space */ while (iRetcode == MNG_BUFOVERFLOW); } else { *pOutbuf = 0; /* nothing to do; then there's no output */ *iOutsize = 0; *iRealsize = 0; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DEFLATE_BUFFER, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ mng_retcode write_raw_chunk (mng_datap pData, mng_chunkid iChunkname, mng_uint32 iRawlen, mng_uint8p pRawdata) { mng_uint32 iCrc; mng_uint32 iWritten; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_RAW_CHUNK, MNG_LC_START) #endif /* temporary buffer ? */ if ((pRawdata != 0) && (pRawdata != pData->pWritebuf+8)) { /* store length & chunktype in default buffer */ mng_put_uint32 (pData->pWritebuf, iRawlen); mng_put_uint32 (pData->pWritebuf+4, (mng_uint32)iChunkname); /* calculate the crc */ iCrc = update_crc (pData, 0xffffffffL, pData->pWritebuf+4, 4); iCrc = update_crc (pData, iCrc, pRawdata, iRawlen) ^ 0xffffffffL; /* store crc in default buffer */ mng_put_uint32 (pData->pWritebuf+8, iCrc); /* write the length & chunktype */ if (!pData->fWritedata ((mng_handle)pData, pData->pWritebuf, 8, &iWritten)) MNG_ERROR (pData, MNG_APPIOERROR) if (iWritten != 8) /* disk full ? */ MNG_ERROR (pData, MNG_OUTPUTERROR) /* write the temporary buffer */ if (!pData->fWritedata ((mng_handle)pData, pRawdata, iRawlen, &iWritten)) MNG_ERROR (pData, MNG_APPIOERROR) if (iWritten != iRawlen) /* disk full ? */ MNG_ERROR (pData, MNG_OUTPUTERROR) /* write the crc */ if (!pData->fWritedata ((mng_handle)pData, pData->pWritebuf+8, 4, &iWritten)) MNG_ERROR (pData, MNG_APPIOERROR) if (iWritten != 4) /* disk full ? */ MNG_ERROR (pData, MNG_OUTPUTERROR) } else { /* prefix with length & chunktype */ mng_put_uint32 (pData->pWritebuf, iRawlen); mng_put_uint32 (pData->pWritebuf+4, (mng_uint32)iChunkname); /* calculate the crc */ iCrc = crc (pData, pData->pWritebuf+4, iRawlen + 4); /* add it to the buffer */ mng_put_uint32 (pData->pWritebuf + iRawlen + 8, iCrc); /* write it in a single pass */ if (!pData->fWritedata ((mng_handle)pData, pData->pWritebuf, iRawlen + 12, &iWritten)) MNG_ERROR (pData, MNG_APPIOERROR) if (iWritten != iRawlen + 12) /* disk full ? */ MNG_ERROR (pData, MNG_OUTPUTERROR) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_RAW_CHUNK, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* B004 */ #endif /* MNG_INCLUDE_WRITE_PROCS */ /* B004 */ /* ************************************************************************** */ /* * * */ /* * chunk read functions * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_READ_PROCS /* ************************************************************************** */ READ_CHUNK (read_ihdr) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IHDR, MNG_LC_START) #endif if (iRawlen != 13) /* length oke ? */ MNG_ERROR (pData, MNG_INVALIDLENGTH) /* only allowed inside PNG or MNG */ if ((pData->eSigtype != mng_it_png) && (pData->eSigtype != mng_it_mng)) MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) /* sequence checks */ if ((pData->eSigtype == mng_it_png) && (pData->iChunkseq > 1)) MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasIDAT) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasIDAT)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) pData->bHasIHDR = MNG_TRUE; /* indicate IHDR is present */ /* and store interesting fields */ if ((!pData->bHasDHDR) || (pData->iDeltatype == MNG_DELTATYPE_NOCHANGE)) { pData->iDatawidth = mng_get_uint32 (pRawdata); pData->iDataheight = mng_get_uint32 (pRawdata+4); } pData->iBitdepth = *(pRawdata+8); pData->iColortype = *(pRawdata+9); pData->iCompression = *(pRawdata+10); pData->iFilter = *(pRawdata+11); pData->iInterlace = *(pRawdata+12); if ((pData->iBitdepth != 1) && /* parameter validity checks */ (pData->iBitdepth != 2) && (pData->iBitdepth != 4) && (pData->iBitdepth != 8) && (pData->iBitdepth != 16) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if ((pData->iColortype != MNG_COLORTYPE_GRAY ) && (pData->iColortype != MNG_COLORTYPE_RGB ) && (pData->iColortype != MNG_COLORTYPE_INDEXED) && (pData->iColortype != MNG_COLORTYPE_GRAYA ) && (pData->iColortype != MNG_COLORTYPE_RGBA ) ) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) if ((pData->iColortype == MNG_COLORTYPE_INDEXED) && (pData->iBitdepth > 8)) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (((pData->iColortype == MNG_COLORTYPE_RGB ) || (pData->iColortype == MNG_COLORTYPE_GRAYA ) || (pData->iColortype == MNG_COLORTYPE_RGBA ) ) && (pData->iBitdepth < 8 ) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (pData->iCompression != MNG_COMPRESSION_DEFLATE) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if ((pData->eSigtype == mng_it_png) && (pData->iFilter)) MNG_ERROR (pData, MNG_INVALIDFILTER) else if (pData->iFilter & (~MNG_FILTER_DIFFERING)) MNG_ERROR (pData, MNG_INVALIDFILTER) if ((pData->iInterlace != MNG_INTERLACE_NONE ) && (pData->iInterlace != MNG_INTERLACE_ADAM7) ) MNG_ERROR (pData, MNG_INVALIDINTERLACE) if (pData->bHasDHDR) /* check the colortype for delta-images ! */ { mng_imagedatap pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; if (pData->iColortype != pBuf->iColortype) { if ( ( (pData->iColortype != MNG_COLORTYPE_INDEXED) || (pBuf->iColortype == MNG_COLORTYPE_GRAY ) ) && ( (pData->iColortype != MNG_COLORTYPE_GRAY ) || (pBuf->iColortype == MNG_COLORTYPE_INDEXED) ) ) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) } } if (!pData->bHasheader) /* first chunk ? */ { pData->bHasheader = MNG_TRUE; /* we've got a header */ pData->eImagetype = mng_it_png; /* then this must be a PNG */ pData->iWidth = pData->iDatawidth; pData->iHeight = pData->iDataheight; /* predict alpha-depth ! */ if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) || (pData->iColortype == MNG_COLORTYPE_RGBA ) ) pData->iAlphadepth = pData->iBitdepth; else if (pData->iColortype == MNG_COLORTYPE_INDEXED) pData->iAlphadepth = 8; /* worst case scenario */ else pData->iAlphadepth = 0; /* fits on maximum canvas ? */ if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) MNG_WARNING (pData, MNG_IMAGETOOLARGE) if (pData->fProcessheader) /* inform the app ? */ if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) MNG_ERROR (pData, MNG_APPMISCERROR) } if (!pData->bHasDHDR) pData->iImagelevel++; /* one level deeper */ #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode = process_display_ihdr (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* fill the fields */ ((mng_ihdrp)*ppChunk)->iWidth = mng_get_uint32 (pRawdata); ((mng_ihdrp)*ppChunk)->iHeight = mng_get_uint32 (pRawdata+4); ((mng_ihdrp)*ppChunk)->iBitdepth = pData->iBitdepth; ((mng_ihdrp)*ppChunk)->iColortype = pData->iColortype; ((mng_ihdrp)*ppChunk)->iCompression = pData->iCompression; ((mng_ihdrp)*ppChunk)->iFilter = pData->iFilter; ((mng_ihdrp)*ppChunk)->iInterlace = pData->iInterlace; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IHDR, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_plte) { #if defined(MNG_SUPPORT_DISPLAY) || defined(MNG_STORE_CHUNKS) mng_uint32 iX; mng_uint8p pRawdata2; #endif #ifdef MNG_SUPPORT_DISPLAY mng_uint32 iRawlen2; #endif #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PLTE, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasJHDR)) #else if (pData->bHasIDAT) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* multiple PLTE only inside BASI */ if ((pData->bHasPLTE) && (!pData->bHasBASI)) MNG_ERROR (pData, MNG_MULTIPLEERROR) /* length must be multiple of 3 */ if (((iRawlen % 3) != 0) || (iRawlen > 768)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { /* only allowed for indexed-color or rgb(a)-color! */ if ((pData->iColortype != 2) && (pData->iColortype != 3) && (pData->iColortype != 6)) MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) /* empty only allowed if global present */ if ((iRawlen == 0) && (!pData->bHasglobalPLTE)) MNG_ERROR (pData, MNG_CANNOTBEEMPTY) } else { if (iRawlen == 0) /* cannot be empty as global! */ MNG_ERROR (pData, MNG_CANNOTBEEMPTY) } if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) pData->bHasPLTE = MNG_TRUE; /* got it! */ else pData->bHasglobalPLTE = MNG_TRUE; pData->iPLTEcount = iRawlen / 3; #ifdef MNG_SUPPORT_DISPLAY if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { mng_imagep pImage; mng_imagedatap pBuf; if (pData->bHasDHDR) /* processing delta-image ? */ { /* store in object 0 !!! */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; pBuf->bHasPLTE = MNG_TRUE; /* it's definitely got a PLTE now */ pBuf->iPLTEcount = iRawlen / 3; /* this is the exact length */ pRawdata2 = pRawdata; /* copy the entries */ for (iX = 0; iX < iRawlen / 3; iX++) { pBuf->aPLTEentries[iX].iRed = *pRawdata2; pBuf->aPLTEentries[iX].iGreen = *(pRawdata2+1); pBuf->aPLTEentries[iX].iBlue = *(pRawdata2+2); pRawdata2 += 3; } } else { /* get the current object */ pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address the object buffer */ pBuf->bHasPLTE = MNG_TRUE; /* and tell it it's got a PLTE now */ if (!iRawlen) /* if empty, inherit from global */ { pBuf->iPLTEcount = pData->iGlobalPLTEcount; MNG_COPY (pBuf->aPLTEentries, pData->aGlobalPLTEentries, sizeof (pBuf->aPLTEentries)) if (pData->bHasglobalTRNS) /* also copy global tRNS ? */ { /* indicate tRNS available */ pBuf->bHasTRNS = MNG_TRUE; iRawlen2 = pData->iGlobalTRNSrawlen; pRawdata2 = (mng_uint8p)(pData->aGlobalTRNSrawdata); /* global length oke ? */ if ((iRawlen2 == 0) || (iRawlen2 > pBuf->iPLTEcount)) MNG_ERROR (pData, MNG_GLOBALLENGTHERR) /* copy it */ pBuf->iTRNScount = iRawlen2; MNG_COPY (pBuf->aTRNSentries, pRawdata2, iRawlen2) } } else { /* store fields for future reference */ pBuf->iPLTEcount = iRawlen / 3; pRawdata2 = pRawdata; for (iX = 0; iX < pBuf->iPLTEcount; iX++) { pBuf->aPLTEentries[iX].iRed = *pRawdata2; pBuf->aPLTEentries[iX].iGreen = *(pRawdata2+1); pBuf->aPLTEentries[iX].iBlue = *(pRawdata2+2); pRawdata2 += 3; } } } } else /* store as global */ { pData->iGlobalPLTEcount = iRawlen / 3; pRawdata2 = pRawdata; for (iX = 0; iX < pData->iGlobalPLTEcount; iX++) { pData->aGlobalPLTEentries[iX].iRed = *pRawdata2; pData->aGlobalPLTEentries[iX].iGreen = *(pRawdata2+1); pData->aGlobalPLTEentries[iX].iBlue = *(pRawdata2+2); pRawdata2 += 3; } { /* create an animation object */ mng_retcode iRetcode = create_ani_plte (pData, pData->iGlobalPLTEcount, pData->aGlobalPLTEentries); if (iRetcode) /* on error bail out */ return iRetcode; } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_pltep)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_pltep)*ppChunk)->iEntrycount = iRawlen / 3; pRawdata2 = pRawdata; for (iX = 0; iX < ((mng_pltep)*ppChunk)->iEntrycount; iX++) { ((mng_pltep)*ppChunk)->aEntries[iX].iRed = *pRawdata2; ((mng_pltep)*ppChunk)->aEntries[iX].iGreen = *(pRawdata2+1); ((mng_pltep)*ppChunk)->aEntries[iX].iBlue = *(pRawdata2+2); pRawdata2 += 3; } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PLTE, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_idat) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IDAT, MNG_LC_START) #endif #ifdef MNG_INCLUDE_JNG /* sequence checks */ if ((!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasJHDR) && (pData->iJHDRalphacompression != MNG_COMPRESSION_DEFLATE)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->bHasJSEP) MNG_ERROR (pData, MNG_SETQUENCEERROR) #endif /* not allowed for for deltatype NO_CHANGE */ if ((pData->bHasDHDR) && ((pData->iDeltatype == MNG_DELTATYPE_NOCHANGE))) MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) /* can only be empty in BASI-block! */ if ((iRawlen == 0) && (!pData->bHasBASI)) MNG_ERROR (pData, MNG_INVALIDLENGTH) /* indexed-color requires PLTE */ if ((pData->bHasIHDR) && (pData->iColortype == 3) && (!pData->bHasPLTE)) MNG_ERROR (pData, MNG_PLTEMISSING) pData->bHasIDAT = MNG_TRUE; /* got some IDAT now, don't we */ #ifdef MNG_SUPPORT_DISPLAY if (iRawlen) { /* display processing */ mng_retcode iRetcode = process_display_idat (pData, iRawlen, pRawdata); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_idatp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_idatp)*ppChunk)->iDatasize = iRawlen; if (iRawlen != 0) /* is there any data ? */ { MNG_ALLOC (pData, ((mng_idatp)*ppChunk)->pData, iRawlen) MNG_COPY (((mng_idatp)*ppChunk)->pData, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IDAT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_iend) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IEND, MNG_LC_START) #endif if (iRawlen > 0) /* must not contain data! */ MNG_ERROR (pData, MNG_INVALIDLENGTH); #ifdef MNG_INCLUDE_JNG /* sequence checks */ if ((!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* IHDR-block requires IDAT */ if ((pData->bHasIHDR) && (!pData->bHasIDAT)) MNG_ERROR (pData, MNG_IDATMISSING) pData->iImagelevel--; /* one level up */ #ifdef MNG_SUPPORT_DISPLAY { /* create an animation object */ mng_retcode iRetcode = create_ani_image (pData); if (iRetcode) /* on error bail out */ return iRetcode; /* display processing */ iRetcode = process_display_iend (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_SUPPORT_DISPLAY if (!pData->bTimerset) /* reset only if not broken !!! */ { #endif /* IEND signals the end for most ... */ pData->bHasIHDR = MNG_FALSE; pData->bHasBASI = MNG_FALSE; pData->bHasDHDR = MNG_FALSE; #ifdef MNG_INCLUDE_JNG pData->bHasJHDR = MNG_FALSE; pData->bHasJSEP = MNG_FALSE; pData->bHasJDAA = MNG_FALSE; pData->bHasJDAT = MNG_FALSE; #endif pData->bHasPLTE = MNG_FALSE; pData->bHasTRNS = MNG_FALSE; pData->bHasGAMA = MNG_FALSE; pData->bHasCHRM = MNG_FALSE; pData->bHasSRGB = MNG_FALSE; pData->bHasICCP = MNG_FALSE; pData->bHasBKGD = MNG_FALSE; pData->bHasIDAT = MNG_FALSE; #ifdef MNG_SUPPORT_DISPLAY } #endif #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IEND, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_trns) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TRNS, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasJHDR)) #else if (pData->bHasIDAT) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* multiple tRNS only inside BASI */ if ((pData->bHasTRNS) && (!pData->bHasBASI)) MNG_ERROR (pData, MNG_MULTIPLEERROR) if (iRawlen > 256) /* it just can't be bigger than that! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { /* not allowed with full alpha-channel */ if ((pData->iColortype == 4) || (pData->iColortype == 6)) MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) if (iRawlen != 0) /* filled ? */ { /* length checks */ if ((pData->iColortype == 0) && (iRawlen != 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 2) && (iRawlen != 6)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY if (pData->iColortype == 3) { mng_imagep pImage = (mng_imagep)pData->pCurrentobj; mng_imagedatap pBuf; if (!pImage) /* no object then check obj 0 */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ if ((iRawlen == 0) || (iRawlen > pBuf->iPLTEcount)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } #endif } else /* if empty there must be global stuff! */ { if (!pData->bHasglobalTRNS) MNG_ERROR (pData, MNG_CANNOTBEEMPTY) } } if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) pData->bHasTRNS = MNG_TRUE; /* indicate tRNS available */ else pData->bHasglobalTRNS = MNG_TRUE; #ifdef MNG_SUPPORT_DISPLAY if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { mng_imagep pImage; mng_imagedatap pBuf; mng_uint8p pRawdata2; mng_uint32 iRawlen2; if (pData->bHasDHDR) /* processing delta-image ? */ { /* store in object 0 !!! */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ switch (pData->iColortype) /* store fields for future reference */ { case 0: { /* gray */ pBuf->iTRNSgray = mng_get_uint16 (pRawdata); pBuf->iTRNSred = 0; pBuf->iTRNSgreen = 0; pBuf->iTRNSblue = 0; pBuf->iTRNScount = 0; break; } case 2: { /* rgb */ pBuf->iTRNSgray = 0; pBuf->iTRNSred = mng_get_uint16 (pRawdata); pBuf->iTRNSgreen = mng_get_uint16 (pRawdata+2); pBuf->iTRNSblue = mng_get_uint16 (pRawdata+4); pBuf->iTRNScount = 0; break; } case 3: { /* indexed */ pBuf->iTRNSgray = 0; pBuf->iTRNSred = 0; pBuf->iTRNSgreen = 0; pBuf->iTRNSblue = 0; pBuf->iTRNScount = iRawlen; MNG_COPY (pBuf->aTRNSentries, pRawdata, iRawlen) break; } } pBuf->bHasTRNS = MNG_TRUE; /* tell it it's got a tRNS now */ } else { /* address current object */ pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ pBuf->bHasTRNS = MNG_TRUE; /* and tell it it's got a tRNS now */ if (iRawlen == 0) /* if empty, inherit from global */ { iRawlen2 = pData->iGlobalTRNSrawlen; pRawdata2 = (mng_ptr)(pData->aGlobalTRNSrawdata); /* global length oke ? */ if ((pData->iColortype == 0) && (iRawlen2 != 2)) MNG_ERROR (pData, MNG_GLOBALLENGTHERR) if ((pData->iColortype == 2) && (iRawlen2 != 6)) MNG_ERROR (pData, MNG_GLOBALLENGTHERR) if ((pData->iColortype == 3) && ((iRawlen2 == 0) || (iRawlen2 > pBuf->iPLTEcount))) MNG_ERROR (pData, MNG_GLOBALLENGTHERR) } else { iRawlen2 = iRawlen; pRawdata2 = pRawdata; } switch (pData->iColortype) /* store fields for future reference */ { case 0: { /* gray */ pBuf->iTRNSgray = mng_get_uint16 (pRawdata2); pBuf->iTRNSred = 0; pBuf->iTRNSgreen = 0; pBuf->iTRNSblue = 0; pBuf->iTRNScount = 0; break; } case 2: { /* rgb */ pBuf->iTRNSgray = 0; pBuf->iTRNSred = mng_get_uint16 (pRawdata2); pBuf->iTRNSgreen = mng_get_uint16 (pRawdata2+2); pBuf->iTRNSblue = mng_get_uint16 (pRawdata2+4); pBuf->iTRNScount = 0; break; } case 3: { /* indexed */ pBuf->iTRNSgray = 0; pBuf->iTRNSred = 0; pBuf->iTRNSgreen = 0; pBuf->iTRNSblue = 0; pBuf->iTRNScount = iRawlen2; MNG_COPY (pBuf->aTRNSentries, pRawdata2, iRawlen2) break; } } } } else /* store as global */ { pData->iGlobalTRNSrawlen = iRawlen; MNG_COPY (pData->aGlobalTRNSrawdata, pRawdata, iRawlen) { /* create an animation object */ mng_retcode iRetcode = create_ani_trns (pData, pData->iGlobalTRNSrawlen, pData->aGlobalTRNSrawdata); if (iRetcode) /* on error bail out */ return iRetcode; } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { /* not global! */ ((mng_trnsp)*ppChunk)->bGlobal = MNG_FALSE; ((mng_trnsp)*ppChunk)->iType = pData->iColortype; if (iRawlen == 0) /* if empty, indicate so */ ((mng_trnsp)*ppChunk)->bEmpty = MNG_TRUE; else { ((mng_trnsp)*ppChunk)->bEmpty = MNG_FALSE; switch (pData->iColortype) /* store fields */ { case 0: { /* gray */ ((mng_trnsp)*ppChunk)->iGray = mng_get_uint16 (pRawdata); break; } case 2: { /* rgb */ ((mng_trnsp)*ppChunk)->iRed = mng_get_uint16 (pRawdata); ((mng_trnsp)*ppChunk)->iGreen = mng_get_uint16 (pRawdata+2); ((mng_trnsp)*ppChunk)->iBlue = mng_get_uint16 (pRawdata+4); break; } case 3: { /* indexed */ ((mng_trnsp)*ppChunk)->iCount = iRawlen; MNG_COPY (((mng_trnsp)*ppChunk)->aEntries, pRawdata, iRawlen) break; } } } } else /* it's global! */ { ((mng_trnsp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_trnsp)*ppChunk)->bGlobal = MNG_TRUE; ((mng_trnsp)*ppChunk)->iType = 0; ((mng_trnsp)*ppChunk)->iRawlen = iRawlen; MNG_COPY (((mng_trnsp)*ppChunk)->aRawdata, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TRNS, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_gama) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_GAMA, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasPLTE) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if ((pData->bHasIDAT) || (pData->bHasPLTE)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { /* length must be exactly 4 */ if (iRawlen != 4) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { /* length must be empty or exactly 4 */ if ((iRawlen != 0) && (iRawlen != 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif pData->bHasGAMA = MNG_TRUE; /* indicate we've got it */ else pData->bHasglobalGAMA = (mng_bool)(iRawlen != 0); #ifdef MNG_SUPPORT_DISPLAY #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { mng_imagep pImage; if (pData->bHasDHDR) /* update delta image ? */ { /* store in object 0 ! */ pImage = (mng_imagep)pData->pObjzero; /* store for color-processing routines */ pImage->pImgbuf->iGamma = mng_get_uint32 (pRawdata); pImage->pImgbuf->bHasGAMA = MNG_TRUE; } else { pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; /* store for color-processing routines */ pImage->pImgbuf->iGamma = mng_get_uint32 (pRawdata); pImage->pImgbuf->bHasGAMA = MNG_TRUE; } } else { /* store as global */ if (iRawlen != 0) pData->iGlobalGamma = mng_get_uint32 (pRawdata); { /* create an animation object */ mng_retcode iRetcode = create_ani_gama (pData, (mng_bool)(iRawlen == 0), pData->iGlobalGamma); if (iRetcode) /* on error bail out */ return iRetcode; } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_gamap)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) ((mng_gamap)*ppChunk)->iGamma = mng_get_uint32 (pRawdata); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_GAMA, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_chrm) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CHRM, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasPLTE) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if ((pData->bHasIDAT) || (pData->bHasPLTE)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { /* length must be exactly 32 */ if (iRawlen != 32) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { /* length must be empty or exactly 32 */ if ((iRawlen != 0) && (iRawlen != 32)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif pData->bHasCHRM = MNG_TRUE; /* indicate we've got it */ else pData->bHasglobalCHRM = (mng_bool)(iRawlen != 0); #ifdef MNG_SUPPORT_DISPLAY { mng_uint32 iWhitepointx, iWhitepointy; mng_uint32 iPrimaryredx, iPrimaryredy; mng_uint32 iPrimarygreenx, iPrimarygreeny; mng_uint32 iPrimarybluex, iPrimarybluey; iWhitepointx = mng_get_uint32 (pRawdata); iWhitepointy = mng_get_uint32 (pRawdata+4); iPrimaryredx = mng_get_uint32 (pRawdata+8); iPrimaryredy = mng_get_uint32 (pRawdata+12); iPrimarygreenx = mng_get_uint32 (pRawdata+16); iPrimarygreeny = mng_get_uint32 (pRawdata+20); iPrimarybluex = mng_get_uint32 (pRawdata+24); iPrimarybluey = mng_get_uint32 (pRawdata+28); #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { mng_imagep pImage; mng_imagedatap pBuf; if (pData->bHasDHDR) /* update delta image ? */ { /* store it in object 0 ! */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ pBuf->bHasCHRM = MNG_TRUE; /* and tell it it's got a CHRM now */ /* store for color-processing routines */ pBuf->iWhitepointx = iWhitepointx; pBuf->iWhitepointy = iWhitepointy; pBuf->iPrimaryredx = iPrimaryredx; pBuf->iPrimaryredy = iPrimaryredy; pBuf->iPrimarygreenx = iPrimarygreenx; pBuf->iPrimarygreeny = iPrimarygreeny; pBuf->iPrimarybluex = iPrimarybluex; pBuf->iPrimarybluey = iPrimarybluey; } else { pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ pBuf->bHasCHRM = MNG_TRUE; /* and tell it it's got a CHRM now */ /* store for color-processing routines */ pBuf->iWhitepointx = iWhitepointx; pBuf->iWhitepointy = iWhitepointy; pBuf->iPrimaryredx = iPrimaryredx; pBuf->iPrimaryredy = iPrimaryredy; pBuf->iPrimarygreenx = iPrimarygreenx; pBuf->iPrimarygreeny = iPrimarygreeny; pBuf->iPrimarybluex = iPrimarybluex; pBuf->iPrimarybluey = iPrimarybluey; } } else { /* store as global */ if (iRawlen != 0) { pData->iGlobalWhitepointx = iWhitepointx; pData->iGlobalWhitepointy = iWhitepointy; pData->iGlobalPrimaryredx = iPrimaryredx; pData->iGlobalPrimaryredy = iPrimaryredy; pData->iGlobalPrimarygreenx = iPrimarygreenx; pData->iGlobalPrimarygreeny = iPrimarygreeny; pData->iGlobalPrimarybluex = iPrimarybluex; pData->iGlobalPrimarybluey = iPrimarybluey; } { /* create an animation object */ mng_retcode iRetcode = create_ani_chrm (pData, (mng_bool)(iRawlen == 0), iWhitepointx, iWhitepointy, iPrimaryredx, iPrimaryredy, iPrimarygreenx, iPrimarygreeny, iPrimarybluex, iPrimarybluey); if (iRetcode) /* on error bail out */ return iRetcode; } } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_chrmp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { ((mng_chrmp)*ppChunk)->iWhitepointx = mng_get_uint32 (pRawdata); ((mng_chrmp)*ppChunk)->iWhitepointy = mng_get_uint32 (pRawdata+4); ((mng_chrmp)*ppChunk)->iRedx = mng_get_uint32 (pRawdata+8); ((mng_chrmp)*ppChunk)->iRedy = mng_get_uint32 (pRawdata+12); ((mng_chrmp)*ppChunk)->iGreenx = mng_get_uint32 (pRawdata+16); ((mng_chrmp)*ppChunk)->iGreeny = mng_get_uint32 (pRawdata+20); ((mng_chrmp)*ppChunk)->iBluex = mng_get_uint32 (pRawdata+24); ((mng_chrmp)*ppChunk)->iBluey = mng_get_uint32 (pRawdata+28); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CHRM, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_srgb) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SRGB, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasPLTE) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if ((pData->bHasIDAT) || (pData->bHasPLTE)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { /* length must be exactly 1 */ if (iRawlen != 1) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { /* length must be empty or exactly 1 */ if ((iRawlen != 0) && (iRawlen != 1)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif pData->bHasSRGB = MNG_TRUE; /* indicate we've got it */ else pData->bHasglobalSRGB = (mng_bool)(iRawlen != 0); #ifdef MNG_SUPPORT_DISPLAY #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { mng_imagep pImage; if (pData->bHasDHDR) /* update delta image ? */ { /* store in object 0 ! */ pImage = (mng_imagep)pData->pObjzero; /* store for color-processing routines */ pImage->pImgbuf->iRenderingintent = *pRawdata; pImage->pImgbuf->bHasSRGB = MNG_TRUE; } else { pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; /* store for color-processing routines */ pImage->pImgbuf->iRenderingintent = *pRawdata; pImage->pImgbuf->bHasSRGB = MNG_TRUE; } } else { /* store as global */ if (iRawlen != 0) pData->iGlobalRendintent = *pRawdata; { /* create an animation object */ mng_retcode iRetcode = create_ani_srgb (pData, (mng_bool)(iRawlen == 0), pData->iGlobalRendintent); if (iRetcode) /* on error bail out */ return iRetcode; } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_srgbp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) ((mng_srgbp)*ppChunk)->iRenderingintent = *pRawdata; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SRGB, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_iccp) { mng_retcode iRetcode; mng_uint8p pTemp; mng_uint32 iCompressedsize; mng_uint32 iProfilesize; mng_uint32 iBufsize = 0; mng_uint8p pBuf = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ICCP, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasPLTE) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if ((pData->bHasIDAT) || (pData->bHasPLTE)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { /* length must be at least 2 */ if (iRawlen < 2) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { /* length must be empty or at least 2 */ if ((iRawlen != 0) && (iRawlen < 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } pTemp = find_null (pRawdata); /* find null-separator */ /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) /* determine size of compressed profile */ iCompressedsize = (mng_uint32)(iRawlen - (pTemp - pRawdata) - 2); /* decompress the profile */ iRetcode = inflate_buffer (pData, pTemp+2, iCompressedsize, &pBuf, &iBufsize, &iProfilesize); #ifdef MNG_CHECK_BAD_ICCP /* Check for bad iCCP chunk */ if ((iRetcode) && (!strncmp ((char *)pRawdata, "Photoshop ICC profile", 21))) { if (iRawlen == 2615) /* is it the sRGB profile ? */ { mng_chunk_header chunk_srgb = {MNG_UINT_sRGB, init_srgb, free_srgb, read_srgb, write_srgb, 0, 0}; /* pretend it's an sRGB chunk then ! */ iRetcode = read_srgb (pData, &chunk_srgb, 1, (mng_ptr)"0", ppChunk); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffer */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } } } else { #endif /* MNG_CHECK_BAD_ICCP */ if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffer */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif pData->bHasICCP = MNG_TRUE; /* indicate we've got it */ else pData->bHasglobalICCP = (mng_bool)(iRawlen != 0); #ifdef MNG_SUPPORT_DISPLAY #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif { mng_imagep pImage; if (pData->bHasDHDR) /* update delta image ? */ { /* store in object 0 ! */ pImage = (mng_imagep)pData->pObjzero; if (pImage->pImgbuf->pProfile) /* profile existed ? */ MNG_FREEX (pData, pImage->pImgbuf->pProfile, pImage->pImgbuf->iProfilesize) /* allocate a buffer & copy it */ MNG_ALLOC (pData, pImage->pImgbuf->pProfile, iProfilesize) MNG_COPY (pImage->pImgbuf->pProfile, pBuf, iProfilesize) /* store it's length as well */ pImage->pImgbuf->iProfilesize = iProfilesize; pImage->pImgbuf->bHasICCP = MNG_TRUE; } else { pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) /* no object then dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; if (pImage->pImgbuf->pProfile) /* profile existed ? */ MNG_FREEX (pData, pImage->pImgbuf->pProfile, pImage->pImgbuf->iProfilesize) /* allocate a buffer & copy it */ MNG_ALLOC (pData, pImage->pImgbuf->pProfile, iProfilesize) MNG_COPY (pImage->pImgbuf->pProfile, pBuf, iProfilesize) /* store it's length as well */ pImage->pImgbuf->iProfilesize = iProfilesize; pImage->pImgbuf->bHasICCP = MNG_TRUE; } } else { /* store as global */ if (iRawlen == 0) /* empty chunk ? */ { if (pData->pGlobalProfile) /* did we have a global profile ? */ MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize) pData->iGlobalProfilesize = 0; /* reset to null */ pData->pGlobalProfile = MNG_NULL; } else { /* allocate a global buffer & copy it */ MNG_ALLOC (pData, pData->pGlobalProfile, iProfilesize) MNG_COPY (pData->pGlobalProfile, pBuf, iProfilesize) /* store it's length as well */ pData->iGlobalProfilesize = iProfilesize; } /* create an animation object */ iRetcode = create_ani_iccp (pData, (mng_bool)(iRawlen == 0), pData->iGlobalProfilesize, pData->pGlobalProfile); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffer */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } /* store the fields */ ((mng_iccpp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) /* not empty ? */ { if (!pBuf) /* hasn't been unpuzzled it yet ? */ { /* find null-separator */ pTemp = find_null (pRawdata); /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) /* determine size of compressed profile */ iCompressedsize = iRawlen - (pTemp - pRawdata) - 2; /* decompress the profile */ iRetcode = inflate_buffer (pData, pTemp+2, iCompressedsize, &pBuf, &iBufsize, &iProfilesize); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffer */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } } ((mng_iccpp)*ppChunk)->iNamesize = (mng_uint32)(pTemp - pRawdata); if (((mng_iccpp)*ppChunk)->iNamesize) { MNG_ALLOC (pData, ((mng_iccpp)*ppChunk)->zName, ((mng_iccpp)*ppChunk)->iNamesize + 1) MNG_COPY (((mng_iccpp)*ppChunk)->zName, pRawdata, ((mng_iccpp)*ppChunk)->iNamesize) } ((mng_iccpp)*ppChunk)->iCompression = *(pTemp+1); ((mng_iccpp)*ppChunk)->iProfilesize = iProfilesize; MNG_ALLOC (pData, ((mng_iccpp)*ppChunk)->pProfile, iProfilesize) MNG_COPY (((mng_iccpp)*ppChunk)->pProfile, pBuf, iProfilesize) } } #endif /* MNG_STORE_CHUNKS */ if (pBuf) /* free the temporary buffer */ MNG_FREEX (pData, pBuf, iBufsize) #ifdef MNG_CHECK_BAD_ICCP } #endif #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ICCP, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_text) { mng_uint32 iKeywordlen, iTextlen; mng_pchar zKeyword, zText; mng_uint8p pTemp; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TEXT, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 2) /* length must be at least 2 */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pTemp = find_null (pRawdata); /* find the null separator */ /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) if (pTemp == pRawdata) /* there must be at least 1 char for keyword */ MNG_ERROR (pData, MNG_KEYWORDNULL) iKeywordlen = (mng_uint32)(pTemp - pRawdata); iTextlen = iRawlen - iKeywordlen - 1; if (pData->fProcesstext) /* inform the application ? */ { mng_bool bOke; MNG_ALLOC (pData, zKeyword, iKeywordlen + 1) MNG_COPY (zKeyword, pRawdata, iKeywordlen) MNG_ALLOCX (pData, zText, iTextlen + 1) if (!zText) /* on error bail out */ { MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_ERROR (pData, MNG_OUTOFMEMORY) } if (iTextlen) MNG_COPY (zText, pTemp+1, iTextlen) bOke = pData->fProcesstext ((mng_handle)pData, MNG_TYPE_TEXT, zKeyword, zText, 0, 0); MNG_FREEX (pData, zText, iTextlen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) if (!bOke) MNG_ERROR (pData, MNG_APPMISCERROR) } #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_textp)*ppChunk)->iKeywordsize = iKeywordlen; ((mng_textp)*ppChunk)->iTextsize = iTextlen; if (iKeywordlen) { MNG_ALLOC (pData, ((mng_textp)*ppChunk)->zKeyword, iKeywordlen+1) MNG_COPY (((mng_textp)*ppChunk)->zKeyword, pRawdata, iKeywordlen) } if (iTextlen) { MNG_ALLOC (pData, ((mng_textp)*ppChunk)->zText, iTextlen+1) MNG_COPY (((mng_textp)*ppChunk)->zText, pTemp+1, iTextlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TEXT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_ztxt) { mng_retcode iRetcode; mng_uint32 iKeywordlen, iTextlen; mng_pchar zKeyword; mng_uint8p pTemp; mng_uint32 iCompressedsize; mng_uint32 iBufsize; mng_uint8p pBuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ZTXT, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 3) /* length must be at least 3 */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pTemp = find_null (pRawdata); /* find the null separator */ /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) if (pTemp == pRawdata) /* there must be at least 1 char for keyword */ MNG_ERROR (pData, MNG_KEYWORDNULL) if (*(pTemp+1) != 0) /* only deflate compression-method allowed */ MNG_ERROR (pData, MNG_INVALIDCOMPRESS) iKeywordlen = (mng_uint32)(pTemp - pRawdata); iCompressedsize = (mng_uint32)(iRawlen - iKeywordlen - 2); zKeyword = 0; /* there's no keyword buffer yet */ pBuf = 0; /* or a temporary buffer ! */ if (pData->fProcesstext) /* inform the application ? */ { /* decompress the text */ iRetcode = inflate_buffer (pData, pTemp+2, iCompressedsize, &pBuf, &iBufsize, &iTextlen); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } MNG_ALLOCX (pData, zKeyword, iKeywordlen+1) if (!zKeyword) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_ERROR (pData, MNG_OUTOFMEMORY); } MNG_COPY (zKeyword, pRawdata, iKeywordlen) if (!pData->fProcesstext ((mng_handle)pData, MNG_TYPE_ZTXT, zKeyword, (mng_pchar)pBuf, 0, 0)) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_FREEX (pData, zKeyword, iKeywordlen+1) MNG_ERROR (pData, MNG_APPMISCERROR) } } #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_FREEX (pData, zKeyword, iKeywordlen+1) return iRetcode; } /* store the fields */ ((mng_ztxtp)*ppChunk)->iKeywordsize = iKeywordlen; ((mng_ztxtp)*ppChunk)->iCompression = *(pTemp+1); if ((!pBuf) && (iCompressedsize)) /* did we not get a text-buffer yet ? */ { /* decompress the text */ iRetcode = inflate_buffer (pData, pTemp+2, iCompressedsize, &pBuf, &iBufsize, &iTextlen); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_FREEX (pData, zKeyword, iKeywordlen+1) return iRetcode; } } MNG_ALLOCX (pData, ((mng_ztxtp)*ppChunk)->zKeyword, iKeywordlen + 1) /* on error bail out */ if (!((mng_ztxtp)*ppChunk)->zKeyword) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_FREEX (pData, zKeyword, iKeywordlen+1) MNG_ERROR (pData, MNG_OUTOFMEMORY); } MNG_COPY (((mng_ztxtp)*ppChunk)->zKeyword, pRawdata, iKeywordlen) ((mng_ztxtp)*ppChunk)->iTextsize = iTextlen; if (iCompressedsize) { MNG_ALLOCX (pData, ((mng_ztxtp)*ppChunk)->zText, iTextlen + 1) /* on error bail out */ if (!((mng_ztxtp)*ppChunk)->zText) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, pBuf, iBufsize) MNG_FREEX (pData, zKeyword, iKeywordlen+1) MNG_ERROR (pData, MNG_OUTOFMEMORY); } MNG_COPY (((mng_ztxtp)*ppChunk)->zText, pBuf, iTextlen) } } #endif /* MNG_STORE_CHUNKS */ MNG_FREEX (pData, pBuf, iBufsize) /* free the temporary buffers */ MNG_FREEX (pData, zKeyword, iKeywordlen+1) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ZTXT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_itxt) { mng_retcode iRetcode; mng_uint32 iKeywordlen, iTextlen, iLanguagelen, iTranslationlen; mng_pchar zKeyword, zLanguage, zTranslation; mng_uint8p pNull1, pNull2, pNull3; mng_uint32 iCompressedsize; mng_uint8 iCompressionflag; mng_uint32 iBufsize; mng_uint8p pBuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ITXT, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 6) /* length must be at least 6 */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pNull1 = find_null (pRawdata); /* find the null separators */ pNull2 = find_null (pNull1+3); pNull3 = find_null (pNull2+1); /* not found inside input-data ? */ if (((pNull1 - pRawdata) > (mng_int32)iRawlen) || ((pNull2 - pRawdata) > (mng_int32)iRawlen) || ((pNull3 - pRawdata) > (mng_int32)iRawlen) ) MNG_ERROR (pData, MNG_NULLNOTFOUND) if (pNull1 == pRawdata) /* there must be at least 1 char for keyword */ MNG_ERROR (pData, MNG_KEYWORDNULL) /* compression or not ? */ if ((*(pNull1+1) != 0) && (*(pNull1+1) != 1)) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if (*(pNull1+2) != 0) /* only deflate compression-method allowed */ MNG_ERROR (pData, MNG_INVALIDCOMPRESS) iKeywordlen = (mng_uint32)(pNull1 - pRawdata); iLanguagelen = (mng_uint32)(pNull2 - pNull1 - 3); iTranslationlen = (mng_uint32)(pNull3 - pNull2 - 1); iCompressedsize = (mng_uint32)(iRawlen - iKeywordlen - iLanguagelen - iTranslationlen - 5); iCompressionflag = *(pNull1+1); zKeyword = 0; /* no buffers actquired yet */ zLanguage = 0; zTranslation = 0; pBuf = 0; iTextlen = 0; if (pData->fProcesstext) /* inform the application ? */ { if (iCompressionflag) /* decompress the text ? */ { iRetcode = inflate_buffer (pData, pNull3+1, iCompressedsize, &pBuf, &iBufsize, &iTextlen); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffer */ MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } } else { iTextlen = iCompressedsize; iBufsize = iTextlen+1; /* plus 1 for terminator byte!!! */ MNG_ALLOCX (pData, pBuf, iBufsize); MNG_COPY (pBuf, pNull3+1, iTextlen); } MNG_ALLOCX (pData, zKeyword, iKeywordlen + 1) MNG_ALLOCX (pData, zLanguage, iLanguagelen + 1) MNG_ALLOCX (pData, zTranslation, iTranslationlen + 1) /* on error bail out */ if ((!zKeyword) || (!zLanguage) || (!zTranslation)) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) MNG_ERROR (pData, MNG_OUTOFMEMORY) } MNG_COPY (zKeyword, pRawdata, iKeywordlen) MNG_COPY (zLanguage, pNull1+3, iLanguagelen) MNG_COPY (zTranslation, pNull2+1, iTranslationlen) if (!pData->fProcesstext ((mng_handle)pData, MNG_TYPE_ITXT, zKeyword, (mng_pchar)pBuf, zLanguage, zTranslation)) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) MNG_ERROR (pData, MNG_APPMISCERROR) } } #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } /* store the fields */ ((mng_itxtp)*ppChunk)->iKeywordsize = iKeywordlen; ((mng_itxtp)*ppChunk)->iLanguagesize = iLanguagelen; ((mng_itxtp)*ppChunk)->iTranslationsize = iTranslationlen; ((mng_itxtp)*ppChunk)->iCompressionflag = *(pNull1+1); ((mng_itxtp)*ppChunk)->iCompressionmethod = *(pNull1+2); if ((!pBuf) && (iCompressedsize)) /* did we not get a text-buffer yet ? */ { if (iCompressionflag) /* decompress the text ? */ { iRetcode = inflate_buffer (pData, pNull3+1, iCompressedsize, &pBuf, &iBufsize, &iTextlen); if (iRetcode) /* on error bail out */ { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) return iRetcode; } } else { iTextlen = iCompressedsize; iBufsize = iTextlen+1; /* plus 1 for terminator byte!!! */ MNG_ALLOCX (pData, pBuf, iBufsize); MNG_COPY (pBuf, pNull3+1, iTextlen); } } MNG_ALLOCX (pData, ((mng_itxtp)*ppChunk)->zKeyword, iKeywordlen + 1) MNG_ALLOCX (pData, ((mng_itxtp)*ppChunk)->zLanguage, iLanguagelen + 1) MNG_ALLOCX (pData, ((mng_itxtp)*ppChunk)->zTranslation, iTranslationlen + 1) /* on error bail out */ if ((!((mng_itxtp)*ppChunk)->zKeyword ) || (!((mng_itxtp)*ppChunk)->zLanguage ) || (!((mng_itxtp)*ppChunk)->zTranslation) ) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) MNG_ERROR (pData, MNG_OUTOFMEMORY) } MNG_COPY (((mng_itxtp)*ppChunk)->zKeyword, pRawdata, iKeywordlen) MNG_COPY (((mng_itxtp)*ppChunk)->zLanguage, pNull1+3, iLanguagelen) MNG_COPY (((mng_itxtp)*ppChunk)->zTranslation, pNull2+1, iTranslationlen) ((mng_itxtp)*ppChunk)->iTextsize = iTextlen; if (iTextlen) { MNG_ALLOCX (pData, ((mng_itxtp)*ppChunk)->zText, iTextlen + 1) if (!((mng_itxtp)*ppChunk)->zText) { /* don't forget to drop the temp buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) MNG_ERROR (pData, MNG_OUTOFMEMORY) } MNG_COPY (((mng_itxtp)*ppChunk)->zText, pBuf, iTextlen) } } #endif /* MNG_STORE_CHUNKS */ /* free the temporary buffers */ MNG_FREEX (pData, zTranslation, iTranslationlen + 1) MNG_FREEX (pData, zLanguage, iLanguagelen + 1) MNG_FREEX (pData, zKeyword, iKeywordlen + 1) MNG_FREEX (pData, pBuf, iBufsize) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ITXT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_bkgd) { #ifdef MNG_SUPPORT_DISPLAY mng_imagep pImage = (mng_imagep)pData->pCurrentobj; mng_imagedatap pBuf; #endif #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BKGD, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if (pData->bHasIDAT) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen > 6) /* it just can't be bigger than that! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_INCLUDE_JNG /* length checks */ if (pData->bHasJHDR) { if (((pData->iJHDRcolortype == 8) || (pData->iJHDRcolortype == 12)) && (iRawlen != 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if (((pData->iJHDRcolortype == 10) || (pData->iJHDRcolortype == 14)) && (iRawlen != 6)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else #endif /* MNG_INCLUDE_JNG */ if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { if (((pData->iColortype == 0) || (pData->iColortype == 4)) && (iRawlen != 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if (((pData->iColortype == 2) || (pData->iColortype == 6)) && (iRawlen != 6)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 3) && (iRawlen != 1)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { if (iRawlen != 6) /* global is always 16-bit RGB ! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) } #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif pData->bHasBKGD = MNG_TRUE; /* indicate bKGD available */ else pData->bHasglobalBKGD = (mng_bool)(iRawlen != 0); #ifdef MNG_SUPPORT_DISPLAY if (!pImage) /* if no object dump it in obj 0 */ pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; /* address object buffer */ #ifdef MNG_INCLUDE_JNG if (pData->bHasJHDR) { pBuf->bHasBKGD = MNG_TRUE; /* tell the object it's got bKGD now */ switch (pData->iJHDRcolortype) /* store fields for future reference */ { case 8 : ; /* gray */ case 12 : { /* graya */ pBuf->iBKGDgray = mng_get_uint16 (pRawdata); break; } case 10 : ; /* rgb */ case 14 : { /* rgba */ pBuf->iBKGDred = mng_get_uint16 (pRawdata); pBuf->iBKGDgreen = mng_get_uint16 (pRawdata+2); pBuf->iBKGDblue = mng_get_uint16 (pRawdata+4); break; } } } else #endif /* MNG_INCLUDE_JNG */ if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { pBuf->bHasBKGD = MNG_TRUE; /* tell the object it's got bKGD now */ switch (pData->iColortype) /* store fields for future reference */ { case 0 : ; /* gray */ case 4 : { /* graya */ pBuf->iBKGDgray = mng_get_uint16 (pRawdata); break; } case 2 : ; /* rgb */ case 6 : { /* rgba */ pBuf->iBKGDred = mng_get_uint16 (pRawdata); pBuf->iBKGDgreen = mng_get_uint16 (pRawdata+2); pBuf->iBKGDblue = mng_get_uint16 (pRawdata+4); break; } case 3 : { /* indexed */ pBuf->iBKGDindex = *pRawdata; break; } } } else /* store as global */ { if (iRawlen) { pData->iGlobalBKGDred = mng_get_uint16 (pRawdata); pData->iGlobalBKGDgreen = mng_get_uint16 (pRawdata+2); pData->iGlobalBKGDblue = mng_get_uint16 (pRawdata+4); } { /* create an animation object */ mng_retcode iRetcode = create_ani_bkgd (pData, pData->iGlobalBKGDred, pData->iGlobalBKGDgreen, pData->iGlobalBKGDblue); if (iRetcode) /* on error bail out */ return iRetcode; } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_bkgdp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_bkgdp)*ppChunk)->iType = pData->iColortype; if (iRawlen) { switch (iRawlen) /* guess from length */ { case 1 : { /* indexed */ ((mng_bkgdp)*ppChunk)->iType = 3; ((mng_bkgdp)*ppChunk)->iIndex = *pRawdata; break; } case 2 : { /* gray */ ((mng_bkgdp)*ppChunk)->iType = 0; ((mng_bkgdp)*ppChunk)->iGray = mng_get_uint16 (pRawdata); break; } case 6 : { /* rgb */ ((mng_bkgdp)*ppChunk)->iType = 2; ((mng_bkgdp)*ppChunk)->iRed = mng_get_uint16 (pRawdata); ((mng_bkgdp)*ppChunk)->iGreen = mng_get_uint16 (pRawdata+2); ((mng_bkgdp)*ppChunk)->iBlue = mng_get_uint16 (pRawdata+4); break; } } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BKGD, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_phys) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PHYS, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIDAT) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if (pData->bHasIDAT) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* it's 9 bytes or empty; no more, no less! */ if ((iRawlen != 9) && (iRawlen != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_physp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { ((mng_physp)*ppChunk)->iSizex = mng_get_uint32 (pRawdata); ((mng_physp)*ppChunk)->iSizey = mng_get_uint32 (pRawdata+4); ((mng_physp)*ppChunk)->iUnit = *(pRawdata+8); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PHYS, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_sbit) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SBIT, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasPLTE) || (pData->bHasIDAT) || (pData->bHasJDAT) || (pData->bHasJDAA)) #else if ((pData->bHasPLTE) || (pData->bHasIDAT)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen > 4) /* it just can't be bigger than that! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_INCLUDE_JNG /* length checks */ if (pData->bHasJHDR) { if ((pData->iJHDRcolortype == 8) && (iRawlen != 1)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iJHDRcolortype == 10) && (iRawlen != 3)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iJHDRcolortype == 12) && (iRawlen != 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iJHDRcolortype == 14) && (iRawlen != 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else #endif /* MNG_INCLUDE_JNG */ if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) { if ((pData->iColortype == 0) && (iRawlen != 1)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 2) && (iRawlen != 3)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 3) && (iRawlen != 3)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 4) && (iRawlen != 2)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((pData->iColortype == 6) && (iRawlen != 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { /* global = empty or RGBA */ if ((iRawlen != 0) && (iRawlen != 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) } #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_sbitp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { #ifdef MNG_INCLUDE_JNG if (pData->bHasJHDR) ((mng_sbitp)*ppChunk)->iType = pData->iJHDRcolortype; else #endif if (pData->bHasIHDR) ((mng_sbitp)*ppChunk)->iType = pData->iColortype; else /* global ! */ ((mng_sbitp)*ppChunk)->iType = 6; if (iRawlen > 0) ((mng_sbitp)*ppChunk)->aBits [0] = *pRawdata; if (iRawlen > 1) ((mng_sbitp)*ppChunk)->aBits [1] = *(pRawdata+1); if (iRawlen > 2) ((mng_sbitp)*ppChunk)->aBits [2] = *(pRawdata+2); if (iRawlen > 3) ((mng_sbitp)*ppChunk)->aBits [3] = *(pRawdata+3); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SBIT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_splt) { mng_uint8p pTemp; mng_uint32 iNamelen; mng_uint8 iSampledepth; mng_uint32 iRemain; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SPLT, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->bHasIDAT) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen) { pTemp = find_null (pRawdata); /* find null-separator */ /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) iNamelen = (mng_uint32)(pTemp - pRawdata); iSampledepth = *(pTemp+1); iRemain = (iRawlen - 2 - iNamelen); if ((iSampledepth != 1) && (iSampledepth != 2)) MNG_ERROR (pData, MNG_INVSAMPLEDEPTH) /* check remaining length */ if ( ((iSampledepth == 1) && (iRemain % 6 != 0)) || ((iSampledepth == 2) && (iRemain % 10 != 0)) ) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { pTemp = MNG_NULL; iNamelen = 0; iSampledepth = 0; iRemain = 0; } #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_spltp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { ((mng_spltp)*ppChunk)->iNamesize = iNamelen; ((mng_spltp)*ppChunk)->iSampledepth = iSampledepth; if (iSampledepth == 1) ((mng_spltp)*ppChunk)->iEntrycount = iRemain / 6; else ((mng_spltp)*ppChunk)->iEntrycount = iRemain / 10; if (iNamelen) { MNG_ALLOC (pData, ((mng_spltp)*ppChunk)->zName, iNamelen+1) MNG_COPY (((mng_spltp)*ppChunk)->zName, pRawdata, iNamelen) } if (iRemain) { MNG_ALLOC (pData, ((mng_spltp)*ppChunk)->pEntries, iRemain) MNG_COPY (((mng_spltp)*ppChunk)->pEntries, pTemp+2, iRemain) } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SPLT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_hist) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_HIST, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) MNG_ERROR (pData, MNG_SETQUENCEERROR) if ((!pData->bHasPLTE) || (pData->bHasIDAT)) MNG_ERROR (pData, MNG_SETQUENCEERROR) /* length oke ? */ if ( ((iRawlen & 0x01) != 0) || ((iRawlen >> 1) != pData->iPLTEcount) ) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { mng_uint32 iX; /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_histp)*ppChunk)->iEntrycount = iRawlen >> 1; for (iX = 0; iX < (iRawlen >> 1); iX++) { ((mng_histp)*ppChunk)->aEntries [iX] = mng_get_uint16 (pRawdata); pRawdata += 2; } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_HIST, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_time) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TIME, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 7) /* length must be exactly 7 */ MNG_ERROR (pData, MNG_INVALIDLENGTH) /* if (pData->fProcesstime) */ /* inform the application ? */ /* { pData->fProcesstime ((mng_handle)pData, ); } */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_timep)*ppChunk)->iYear = mng_get_uint16 (pRawdata); ((mng_timep)*ppChunk)->iMonth = *(pRawdata+2); ((mng_timep)*ppChunk)->iDay = *(pRawdata+3); ((mng_timep)*ppChunk)->iHour = *(pRawdata+4); ((mng_timep)*ppChunk)->iMinute = *(pRawdata+5); ((mng_timep)*ppChunk)->iSecond = *(pRawdata+6); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TIME, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_mhdr) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MHDR, MNG_LC_START) #endif if (pData->eSigtype != mng_it_mng) /* sequence checks */ MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) if (pData->bHasheader) /* can only be the first chunk! */ MNG_ERROR (pData, MNG_SETQUENCEERROR) /* correct length ? */ if ((iRawlen != 28) && (iRawlen != 12)) MNG_ERROR (pData, MNG_INVALIDLENGTH); pData->bHasMHDR = MNG_TRUE; /* oh boy, a real MNG */ pData->bHasheader = MNG_TRUE; /* we've got a header */ pData->eImagetype = mng_it_mng; /* fill header fields */ pData->iWidth = mng_get_uint32 (pRawdata); pData->iHeight = mng_get_uint32 (pRawdata+4); pData->iTicks = mng_get_uint32 (pRawdata+8); if (iRawlen == 28) /* proper MHDR ? */ { pData->iLayercount = mng_get_uint32 (pRawdata+12); pData->iFramecount = mng_get_uint32 (pRawdata+16); pData->iPlaytime = mng_get_uint32 (pRawdata+20); pData->iSimplicity = mng_get_uint32 (pRawdata+24); pData->bPreDraft48 = MNG_FALSE; } else /* probably pre-draft48 then */ { pData->iLayercount = 0; pData->iFramecount = 0; pData->iPlaytime = 0; pData->iSimplicity = 0; pData->bPreDraft48 = MNG_TRUE; } /* predict alpha-depth */ if ((pData->iSimplicity & 0x00000001) == 0) pData->iAlphadepth = 16; /* no indicators = assume the worst */ else if ((pData->iSimplicity & 0x00000008) == 0) pData->iAlphadepth = 0; /* no transparency at all */ else if ((pData->iSimplicity & 0x00000140) == 0x00000040) pData->iAlphadepth = 1; /* no semi-transparency guaranteed */ else pData->iAlphadepth = 16; /* anything else = assume the worst */ #ifdef MNG_INCLUDE_JNG /* can we handle the complexity ? */ if (pData->iSimplicity & 0x0000FC00) #else if (pData->iSimplicity & 0x0000FC10) #endif MNG_ERROR (pData, MNG_MNGTOOCOMPLEX) /* fits on maximum canvas ? */ if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) MNG_WARNING (pData, MNG_IMAGETOOLARGE) if (pData->fProcessheader) /* inform the app ? */ if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) MNG_ERROR (pData, MNG_APPMISCERROR) pData->iImagelevel++; /* one level deeper */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_mhdrp)*ppChunk)->iWidth = pData->iWidth; ((mng_mhdrp)*ppChunk)->iHeight = pData->iHeight; ((mng_mhdrp)*ppChunk)->iTicks = pData->iTicks; ((mng_mhdrp)*ppChunk)->iLayercount = pData->iLayercount; ((mng_mhdrp)*ppChunk)->iFramecount = pData->iFramecount; ((mng_mhdrp)*ppChunk)->iPlaytime = pData->iPlaytime; ((mng_mhdrp)*ppChunk)->iSimplicity = pData->iSimplicity; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MHDR, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_mend) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MEND, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen > 0) /* must not contain data! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* do something */ mng_retcode iRetcode = process_display_mend (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ pData->bHasMHDR = MNG_FALSE; /* end of the line, bro! */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MEND, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_loop) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_LOOP, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) if (!pData->bCacheplayback) /* must store playback info to work!! */ MNG_ERROR (pData, MNG_LOOPWITHCACHEOFF) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen >= 5) /* length checks */ { if (iRawlen >= 6) { if ((iRawlen - 6) % 4 != 0) MNG_ERROR (pData, MNG_INVALIDLENGTH) } } else MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_uint8 iLevel; mng_uint32 iRepeat; mng_uint8 iTermination = 0; mng_uint32 iItermin = 1; mng_uint32 iItermax = 0x7fffffffL; mng_retcode iRetcode; pData->bHasLOOP = MNG_TRUE; /* indicate we're inside a loop */ iLevel = *pRawdata; /* determine the fields for processing */ if (pData->bPreDraft48) { iTermination = *(pRawdata+1); iRepeat = mng_get_uint32 (pRawdata+2); } else iRepeat = mng_get_uint32 (pRawdata+1); if (iRawlen >= 6) { if (!pData->bPreDraft48) iTermination = *(pRawdata+5); if (iRawlen >= 10) { iItermin = mng_get_uint32 (pRawdata+6); if (iRawlen >= 14) { iItermax = mng_get_uint32 (pRawdata+10); /* TODO: process signals */ } } } /* create the LOOP ani-object */ iRetcode = create_ani_loop (pData, iLevel, iRepeat, iTermination, iItermin, iItermax, 0, 0); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; if (iRawlen >= 5) /* store the fields */ { ((mng_loopp)*ppChunk)->iLevel = *pRawdata; if (pData->bPreDraft48) { ((mng_loopp)*ppChunk)->iTermination = *(pRawdata+1); ((mng_loopp)*ppChunk)->iRepeat = mng_get_uint32 (pRawdata+2); } else { ((mng_loopp)*ppChunk)->iRepeat = mng_get_uint32 (pRawdata+1); } if (iRawlen >= 6) { if (!pData->bPreDraft48) ((mng_loopp)*ppChunk)->iTermination = *(pRawdata+5); if (iRawlen >= 10) { ((mng_loopp)*ppChunk)->iItermin = mng_get_uint32 (pRawdata+6); if (iRawlen >= 14) { ((mng_loopp)*ppChunk)->iItermax = mng_get_uint32 (pRawdata+10); ((mng_loopp)*ppChunk)->iCount = (iRawlen - 14) / 4; if (((mng_loopp)*ppChunk)->iCount) { MNG_ALLOC (pData, ((mng_loopp)*ppChunk)->pSignals, ((mng_loopp)*ppChunk)->iCount << 2) #ifndef MNG_BIGENDIAN_SUPPORTED { mng_uint32 iX; mng_uint8p pIn = pRawdata + 14; mng_uint32p pOut = (mng_uint32p)((mng_loopp)*ppChunk)->pSignals; for (iX = 0; iX < ((mng_loopp)*ppChunk)->iCount; iX++) { *pOut++ = mng_get_uint32 (pIn); pIn += 4; } } #else MNG_COPY (((mng_loopp)*ppChunk)->pSignals, pRawdata + 14, ((mng_loopp)*ppChunk)->iCount << 2) #endif /* !MNG_BIGENDIAN_SUPPORTED */ } } } } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_LOOP, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_endl) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ENDL, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 1) /* length must be exactly 1 */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { if (pData->bHasLOOP) /* are we really processing a loop ? */ { mng_uint8 iLevel = *pRawdata; /* get the nest level */ /* create an ENDL animation object */ mng_retcode iRetcode = create_ani_endl (pData, iLevel); if (iRetcode) /* on error bail out */ return iRetcode; { /* process it */ mng_ani_endlp pENDL = (mng_ani_endlp)pData->pLastaniobj; iRetcode = pENDL->sHeader.fProcess (pData, pENDL); if (iRetcode) /* on error bail out */ return iRetcode; } } else { /* TODO: error abort ??? */ } } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_endlp)*ppChunk)->iLevel = *pRawdata; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ENDL, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_defi) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DEFI, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen != 2) && (iRawlen != 3) && (iRawlen != 4) && (iRawlen != 12) && (iRawlen != 28)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; pData->iDEFIobjectid = mng_get_uint16 (pRawdata); if (iRawlen > 2) { pData->bDEFIhasdonotshow = MNG_TRUE; pData->iDEFIdonotshow = *(pRawdata+2); } else { pData->bDEFIhasdonotshow = MNG_FALSE; pData->iDEFIdonotshow = 0; } if (iRawlen > 3) { pData->bDEFIhasconcrete = MNG_TRUE; pData->iDEFIconcrete = *(pRawdata+3); } else { pData->bDEFIhasconcrete = MNG_FALSE; pData->iDEFIconcrete = 0; } if (iRawlen > 4) { pData->bDEFIhasloca = MNG_TRUE; pData->iDEFIlocax = mng_get_int32 (pRawdata+4); pData->iDEFIlocay = mng_get_int32 (pRawdata+8); } else { pData->bDEFIhasloca = MNG_FALSE; pData->iDEFIlocax = 0; pData->iDEFIlocay = 0; } if (iRawlen > 12) { pData->bDEFIhasclip = MNG_TRUE; pData->iDEFIclipl = mng_get_int32 (pRawdata+12); pData->iDEFIclipr = mng_get_int32 (pRawdata+16); pData->iDEFIclipt = mng_get_int32 (pRawdata+20); pData->iDEFIclipb = mng_get_int32 (pRawdata+24); } else { pData->bDEFIhasclip = MNG_FALSE; pData->iDEFIclipl = 0; pData->iDEFIclipr = 0; pData->iDEFIclipt = 0; pData->iDEFIclipb = 0; } /* create an animation object */ iRetcode = create_ani_defi (pData); if (!iRetcode) /* do display processing */ iRetcode = process_display_defi (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_defip)*ppChunk)->iObjectid = mng_get_uint16 (pRawdata); if (iRawlen > 2) { ((mng_defip)*ppChunk)->bHasdonotshow = MNG_TRUE; ((mng_defip)*ppChunk)->iDonotshow = *(pRawdata+2); } else ((mng_defip)*ppChunk)->bHasdonotshow = MNG_FALSE; if (iRawlen > 3) { ((mng_defip)*ppChunk)->bHasconcrete = MNG_TRUE; ((mng_defip)*ppChunk)->iConcrete = *(pRawdata+3); } else ((mng_defip)*ppChunk)->bHasconcrete = MNG_FALSE; if (iRawlen > 4) { ((mng_defip)*ppChunk)->bHasloca = MNG_TRUE; ((mng_defip)*ppChunk)->iXlocation = mng_get_int32 (pRawdata+4); ((mng_defip)*ppChunk)->iYlocation = mng_get_int32 (pRawdata+8); } else ((mng_defip)*ppChunk)->bHasloca = MNG_FALSE; if (iRawlen > 12) { ((mng_defip)*ppChunk)->bHasclip = MNG_TRUE; ((mng_defip)*ppChunk)->iLeftcb = mng_get_int32 (pRawdata+12); ((mng_defip)*ppChunk)->iRightcb = mng_get_int32 (pRawdata+16); ((mng_defip)*ppChunk)->iTopcb = mng_get_int32 (pRawdata+20); ((mng_defip)*ppChunk)->iBottomcb = mng_get_int32 (pRawdata+24); } else ((mng_defip)*ppChunk)->bHasclip = MNG_FALSE; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DEFI, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_basi) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BASI, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen != 13) && (iRawlen != 19) && (iRawlen != 21) && (iRawlen != 22)) MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasBASI = MNG_TRUE; /* inside a BASI-IEND block now */ /* store interesting fields */ pData->iDatawidth = mng_get_uint32 (pRawdata); pData->iDataheight = mng_get_uint32 (pRawdata+4); pData->iBitdepth = *(pRawdata+8); pData->iColortype = *(pRawdata+9); pData->iCompression = *(pRawdata+10); pData->iFilter = *(pRawdata+11); pData->iInterlace = *(pRawdata+12); if ((pData->iBitdepth != 1) && /* parameter validity checks */ (pData->iBitdepth != 2) && (pData->iBitdepth != 4) && (pData->iBitdepth != 8) && (pData->iBitdepth != 16) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if ((pData->iColortype != MNG_COLORTYPE_GRAY ) && (pData->iColortype != MNG_COLORTYPE_RGB ) && (pData->iColortype != MNG_COLORTYPE_INDEXED) && (pData->iColortype != MNG_COLORTYPE_GRAYA ) && (pData->iColortype != MNG_COLORTYPE_RGBA ) ) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) if ((pData->iColortype == MNG_COLORTYPE_INDEXED) && (pData->iBitdepth > 8)) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (((pData->iColortype == MNG_COLORTYPE_RGB ) || (pData->iColortype == MNG_COLORTYPE_GRAYA ) || (pData->iColortype == MNG_COLORTYPE_RGBA ) ) && (pData->iBitdepth < 8 ) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (pData->iCompression != MNG_COMPRESSION_DEFLATE) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if (pData->iFilter & (~MNG_FILTER_DIFFERING)) MNG_ERROR (pData, MNG_INVALIDFILTER) if ((pData->iInterlace != MNG_INTERLACE_NONE ) && (pData->iInterlace != MNG_INTERLACE_ADAM7) ) MNG_ERROR (pData, MNG_INVALIDINTERLACE) pData->iImagelevel++; /* one level deeper */ #ifdef MNG_SUPPORT_DISPLAY { mng_uint16 iRed = 0; mng_uint16 iGreen = 0; mng_uint16 iBlue = 0; mng_bool bHasalpha = MNG_FALSE; mng_uint16 iAlpha = 0xFFFF; mng_uint8 iViewable = 0; mng_retcode iRetcode; if (iRawlen > 13) /* get remaining fields, if any */ { iRed = mng_get_uint16 (pRawdata+13); iGreen = mng_get_uint16 (pRawdata+15); iBlue = mng_get_uint16 (pRawdata+17); } if (iRawlen > 19) { bHasalpha = MNG_TRUE; iAlpha = mng_get_uint16 (pRawdata+19); } if (iRawlen > 21) iViewable = *(pRawdata+21); /* create an animation object */ iRetcode = create_ani_basi (pData, iRed, iGreen, iBlue, bHasalpha, iAlpha, iViewable); if (!iRetcode) /* display-processing... */ iRetcode = process_display_basi (pData, iRed, iGreen, iBlue, bHasalpha, iAlpha, iViewable); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_basip)*ppChunk)->iWidth = mng_get_uint32 (pRawdata); ((mng_basip)*ppChunk)->iHeight = mng_get_uint32 (pRawdata+4); ((mng_basip)*ppChunk)->iBitdepth = *(pRawdata+8); ((mng_basip)*ppChunk)->iColortype = *(pRawdata+9); ((mng_basip)*ppChunk)->iCompression = *(pRawdata+10); ((mng_basip)*ppChunk)->iFilter = *(pRawdata+11); ((mng_basip)*ppChunk)->iInterlace = *(pRawdata+12); if (iRawlen > 13) { ((mng_basip)*ppChunk)->iRed = mng_get_uint16 (pRawdata+13); ((mng_basip)*ppChunk)->iGreen = mng_get_uint16 (pRawdata+15); ((mng_basip)*ppChunk)->iBlue = mng_get_uint16 (pRawdata+17); } if (iRawlen > 19) ((mng_basip)*ppChunk)->iAlpha = mng_get_uint16 (pRawdata+19); if (iRawlen > 21) ((mng_basip)*ppChunk)->iViewable = *(pRawdata+21); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BASI, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_clon) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CLON, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen != 4) && (iRawlen != 5) && (iRawlen != 6) && (iRawlen != 7) && (iRawlen != 16)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_uint16 iSourceid, iCloneid; mng_uint8 iClonetype = 0; mng_bool bHasdonotshow = MNG_FALSE; mng_uint8 iDonotshow = 0; mng_uint8 iConcrete = 0; mng_bool bHasloca = MNG_FALSE; mng_uint8 iLocationtype = 0; mng_int32 iLocationx = 0; mng_int32 iLocationy = 0; mng_retcode iRetcode; iSourceid = mng_get_uint16 (pRawdata); iCloneid = mng_get_uint16 (pRawdata+2); if (iRawlen > 4) iClonetype = *(pRawdata+4); if (iRawlen > 5) { bHasdonotshow = MNG_TRUE; iDonotshow = *(pRawdata+5); } if (iRawlen > 6) iConcrete = *(pRawdata+6); if (iRawlen > 7) { bHasloca = MNG_TRUE; iLocationtype = *(pRawdata+7); iLocationx = mng_get_int32 (pRawdata+8); iLocationy = mng_get_int32 (pRawdata+12); } iRetcode = create_ani_clon (pData, iSourceid, iCloneid, iClonetype, bHasdonotshow, iDonotshow, iConcrete, bHasloca, iLocationtype, iLocationx, iLocationy); if (!iRetcode) /* do display processing */ iRetcode = process_display_clon (pData, iSourceid, iCloneid, iClonetype, bHasdonotshow, iDonotshow, iConcrete, bHasloca, iLocationtype, iLocationx, iLocationy); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_clonp)*ppChunk)->iSourceid = mng_get_uint16 (pRawdata); ((mng_clonp)*ppChunk)->iCloneid = mng_get_uint16 (pRawdata+2); if (iRawlen > 4) ((mng_clonp)*ppChunk)->iClonetype = *(pRawdata+4); if (iRawlen > 5) ((mng_clonp)*ppChunk)->iDonotshow = *(pRawdata+5); if (iRawlen > 6) ((mng_clonp)*ppChunk)->iConcrete = *(pRawdata+6); if (iRawlen > 7) { ((mng_clonp)*ppChunk)->bHasloca = MNG_TRUE; ((mng_clonp)*ppChunk)->iLocationtype = *(pRawdata+7); ((mng_clonp)*ppChunk)->iLocationx = mng_get_int32 (pRawdata+8); ((mng_clonp)*ppChunk)->iLocationy = mng_get_int32 (pRawdata+12); } else { ((mng_clonp)*ppChunk)->bHasloca = MNG_FALSE; } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CLON, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_past) { #ifdef MNG_STORE_CHUNKS mng_uint32 iCount; #endif #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PAST, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen < 41) || (((iRawlen - 11) % 30) != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_STORE_CHUNKS iCount = ((iRawlen - 11) / 30); /* how many entries again */ #endif #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { mng_uint32 iX; mng_past_sourcep pSource; /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_pastp)*ppChunk)->iDestid = mng_get_uint16 (pRawdata); ((mng_pastp)*ppChunk)->iTargettype = *(pRawdata+2); ((mng_pastp)*ppChunk)->iTargetx = mng_get_int32 (pRawdata+3); ((mng_pastp)*ppChunk)->iTargety = mng_get_int32 (pRawdata+7); ((mng_pastp)*ppChunk)->iCount = iCount; pRawdata += 11; /* get a buffer for all the source blocks */ MNG_ALLOC (pData, ((mng_pastp)*ppChunk)->pSources, (iCount * sizeof (mng_past_source))) pSource = ((mng_pastp)*ppChunk)->pSources; for (iX = 0; iX < iCount; iX++) /* now copy the source blocks */ { pSource->iSourceid = mng_get_uint16 (pRawdata); pSource->iComposition = *(pRawdata+2); pSource->iOrientation = *(pRawdata+3); pSource->iOffsettype = *(pRawdata+4); pSource->iOffsetx = mng_get_int32 (pRawdata+5); pSource->iOffsety = mng_get_int32 (pRawdata+9); pSource->iBoundarytype = *(pRawdata+13); pSource->iBoundaryl = mng_get_int32 (pRawdata+14); pSource->iBoundaryr = mng_get_int32 (pRawdata+18); pSource->iBoundaryt = mng_get_int32 (pRawdata+22); pSource->iBoundaryb = mng_get_int32 (pRawdata+26); pSource += sizeof (mng_past_source); pRawdata += 30; } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PAST, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_disc) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DISC, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if ((iRawlen % 2) != 0) /* check the length */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* process it */ mng_retcode iRetcode = process_display_disc (pData, (iRawlen / 2), (mng_uint16p)pRawdata); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_discp)*ppChunk)->iCount = iRawlen / 2; MNG_ALLOC (pData, ((mng_discp)*ppChunk)->pObjectids, iRawlen) #ifndef MNG_BIGENDIAN_SUPPORTED { mng_uint32 iX; mng_uint8p pIn = pRawdata; mng_uint16p pOut = ((mng_discp)*ppChunk)->pObjectids; for (iX = 0; iX < ((mng_discp)*ppChunk)->iCount; iX++) { *pOut++ = mng_get_uint16 (pIn); pIn += 2; } } #else MNG_COPY (((mng_discp)*ppChunk)->pObjectids, pRawdata, iRawlen) #endif /* !MNG_BIGENDIAN_SUPPORTED */ } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DISC, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_back) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BACK, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen != 6) && (iRawlen != 7) && (iRawlen != 9) && (iRawlen != 10)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; /* retrieve the fields */ pData->bHasBACK = MNG_TRUE; pData->iBACKred = mng_get_uint16 (pRawdata); pData->iBACKgreen = mng_get_uint16 (pRawdata+2); pData->iBACKblue = mng_get_uint16 (pRawdata+4); if (iRawlen > 6) pData->iBACKmandatory = *(pRawdata+6); else pData->iBACKmandatory = 0; if (iRawlen > 7) pData->iBACKimageid = mng_get_uint16 (pRawdata+7); else pData->iBACKimageid = 0; if (iRawlen > 9) pData->iBACKtile = *(pRawdata+9); else pData->iBACKtile = 0; iRetcode = create_ani_back (pData, pData->iBACKred, pData->iBACKgreen, pData->iBACKblue, pData->iBACKmandatory, pData->iBACKimageid, pData->iBACKtile); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_backp)*ppChunk)->iRed = mng_get_uint16 (pRawdata); ((mng_backp)*ppChunk)->iGreen = mng_get_uint16 (pRawdata+2); ((mng_backp)*ppChunk)->iBlue = mng_get_uint16 (pRawdata+4); if (iRawlen > 6) ((mng_backp)*ppChunk)->iMandatory = *(pRawdata+6); if (iRawlen > 7) ((mng_backp)*ppChunk)->iImageid = mng_get_uint16 (pRawdata+7); if (iRawlen > 9) ((mng_backp)*ppChunk)->iTile = *(pRawdata+9); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_BACK, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_fram) { mng_uint8p pTemp; #ifdef MNG_STORE_CHUNKS mng_uint32 iNamelen; #endif mng_uint32 iRemain; mng_uint32 iRequired = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_FRAM, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen <= 1) /* only framing-mode ? */ { #ifdef MNG_STORE_CHUNKS iNamelen = 0; /* indicate so */ #endif iRemain = 0; pTemp = MNG_NULL; } else { pTemp = find_null (pRawdata+1); /* find null-separator */ /* not found inside input-data ? */ if ((pTemp - pRawdata) > (mng_int32)iRawlen) MNG_ERROR (pData, MNG_NULLNOTFOUND) #ifdef MNG_STORE_CHUNKS iNamelen = (mng_uint32)((pTemp - pRawdata) - 1); #endif iRemain = (mng_uint32)(iRawlen - (pTemp - pRawdata) - 1); /* remains must be empty or at least 4 bytes */ if ((iRemain != 0) && (iRemain < 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if (iRemain) { iRequired = 4; /* calculate and check required remaining length */ if (*(pTemp+1)) { iRequired += 4; } if (*(pTemp+2)) { iRequired += 4; } if (*(pTemp+3)) { iRequired += 17; } if (*(pTemp+4)) { if ((iRemain - iRequired) % 4 != 0) MNG_ERROR (pData, MNG_INVALIDLENGTH) } else { if (iRemain != iRequired) MNG_ERROR (pData, MNG_INVALIDLENGTH) } } } #ifdef MNG_SUPPORT_DISPLAY { mng_uint8p pWork = pTemp; mng_uint8 iFramemode = 0; mng_uint8 iChangedelay = 0; mng_uint32 iDelay = 0; mng_uint8 iChangetimeout = 0; mng_uint32 iTimeout = 0; mng_uint8 iChangeclipping = 0; mng_uint8 iCliptype = 0; mng_int32 iClipl = 0; mng_int32 iClipr = 0; mng_int32 iClipt = 0; mng_int32 iClipb = 0; mng_retcode iRetcode; if (iRawlen) /* any data specified ? */ { if (*(pRawdata)) /* save the new framing mode ? */ { iFramemode = *(pRawdata); if (pData->bPreDraft48) /* old style input-stream ? */ { switch (iFramemode) { case 0: { break; } case 1: { iFramemode = 3; break; } case 2: { iFramemode = 4; break; } case 3: { iFramemode = 1; break; } case 4: { iFramemode = 1; break; } case 5: { iFramemode = 2; break; } default: { iFramemode = 1; break; } } } } if (iRemain) { iChangedelay = *(pWork+1); iChangetimeout = *(pWork+2); iChangeclipping = *(pWork+3); pWork += 5; if (iChangedelay) /* delay changed ? */ { iDelay = mng_get_uint32 (pWork); pWork += 4; } if (iChangetimeout) /* timeout changed ? */ { iTimeout = mng_get_uint32 (pWork); pWork += 4; } if (iChangeclipping) /* clipping changed ? */ { iCliptype = *pWork; iClipl = mng_get_int32 (pWork+1); iClipr = mng_get_int32 (pWork+5); iClipt = mng_get_int32 (pWork+9); iClipb = mng_get_int32 (pWork+13); } } } iRetcode = create_ani_fram (pData, iFramemode, iChangedelay, iDelay, iChangetimeout, iTimeout, iChangeclipping, iCliptype, iClipl, iClipr, iClipt, iClipb); if (!iRetcode) /* now go and do something */ iRetcode = process_display_fram (pData, iFramemode, iChangedelay, iDelay, iChangetimeout, iTimeout, iChangeclipping, iCliptype, iClipl, iClipr, iClipt, iClipb); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_framp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { mng_uint8 iFramemode = *(pRawdata); if (pData->bPreDraft48) /* old style input-stream ? */ { switch (iFramemode) { case 1: { iFramemode = 3; break; } case 2: { iFramemode = 4; break; } case 3: { iFramemode = 5; break; } /* TODO: provision for mode=5 ??? */ case 4: { iFramemode = 1; break; } case 5: { iFramemode = 2; break; } default: { iFramemode = 1; break; } } } ((mng_framp)*ppChunk)->iMode = iFramemode; ((mng_framp)*ppChunk)->iNamesize = iNamelen; if (iNamelen) { MNG_ALLOC (pData, ((mng_framp)*ppChunk)->zName, iNamelen+1) MNG_COPY (((mng_framp)*ppChunk)->zName, pRawdata+1, iNamelen) } if (iRemain) { ((mng_framp)*ppChunk)->iChangedelay = *(pTemp+1); ((mng_framp)*ppChunk)->iChangetimeout = *(pTemp+2); ((mng_framp)*ppChunk)->iChangeclipping = *(pTemp+3); ((mng_framp)*ppChunk)->iChangesyncid = *(pTemp+4); pTemp += 5; if (((mng_framp)*ppChunk)->iChangedelay) { ((mng_framp)*ppChunk)->iDelay = mng_get_uint32 (pTemp); pTemp += 4; } if (((mng_framp)*ppChunk)->iChangetimeout) { ((mng_framp)*ppChunk)->iTimeout = mng_get_uint32 (pTemp); pTemp += 4; } if (((mng_framp)*ppChunk)->iChangeclipping) { ((mng_framp)*ppChunk)->iBoundarytype = *pTemp; ((mng_framp)*ppChunk)->iBoundaryl = mng_get_int32 (pTemp+1); ((mng_framp)*ppChunk)->iBoundaryr = mng_get_int32 (pTemp+5); ((mng_framp)*ppChunk)->iBoundaryt = mng_get_int32 (pTemp+9); ((mng_framp)*ppChunk)->iBoundaryb = mng_get_int32 (pTemp+13); pTemp += 17; } if (((mng_framp)*ppChunk)->iChangesyncid) { ((mng_framp)*ppChunk)->iCount = (iRemain - iRequired) / 4; if (((mng_framp)*ppChunk)->iCount) { MNG_ALLOC (pData, ((mng_framp)*ppChunk)->pSyncids, ((mng_framp)*ppChunk)->iCount * 4); #ifndef MNG_BIGENDIAN_SUPPORTED { mng_uint32 iX; mng_uint32p pOut = ((mng_framp)*ppChunk)->pSyncids; for (iX = 0; iX < ((mng_framp)*ppChunk)->iCount; iX++) { *pOut++ = mng_get_uint32 (pTemp); pTemp += 4; } } #else MNG_COPY (((mng_framp)*ppChunk)->pSyncids, pTemp, ((mng_framp)*ppChunk)->iCount * 4) #endif /* !MNG_BIGENDIAN_SUPPORTED */ } } } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_FRAM, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_move) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MOVE, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 13) /* check the length */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; /* create a MOVE animation object */ iRetcode = create_ani_move (pData, mng_get_uint16 (pRawdata), mng_get_uint16 (pRawdata+2), *(pRawdata+4), mng_get_int32 (pRawdata+5), mng_get_int32 (pRawdata+9)); if (!iRetcode) /* process the move */ iRetcode = process_display_move (pData, mng_get_uint16 (pRawdata), mng_get_uint16 (pRawdata+2), *(pRawdata+4), mng_get_int32 (pRawdata+5), mng_get_int32 (pRawdata+9)); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_movep)*ppChunk)->iFirstid = mng_get_uint16 (pRawdata); ((mng_movep)*ppChunk)->iLastid = mng_get_uint16 (pRawdata+2); ((mng_movep)*ppChunk)->iMovetype = *(pRawdata+4); ((mng_movep)*ppChunk)->iMovex = mng_get_int32 (pRawdata+5); ((mng_movep)*ppChunk)->iMovey = mng_get_int32 (pRawdata+9); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MOVE, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_clip) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CLIP, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 21) /* check the length */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; /* create a CLIP animation object */ iRetcode = create_ani_clip (pData, mng_get_uint16 (pRawdata), mng_get_uint16 (pRawdata+2), *(pRawdata+4), mng_get_int32 (pRawdata+5), mng_get_int32 (pRawdata+9), mng_get_int32 (pRawdata+13), mng_get_int32 (pRawdata+17)); if (!iRetcode) /* process the clipping */ iRetcode = process_display_clip (pData, mng_get_uint16 (pRawdata), mng_get_uint16 (pRawdata+2), *(pRawdata+4), mng_get_int32 (pRawdata+5), mng_get_int32 (pRawdata+9), mng_get_int32 (pRawdata+13), mng_get_int32 (pRawdata+17)); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_clipp)*ppChunk)->iFirstid = mng_get_uint16 (pRawdata); ((mng_clipp)*ppChunk)->iLastid = mng_get_uint16 (pRawdata+2); ((mng_clipp)*ppChunk)->iCliptype = *(pRawdata+4); ((mng_clipp)*ppChunk)->iClipl = mng_get_int32 (pRawdata+5); ((mng_clipp)*ppChunk)->iClipr = mng_get_int32 (pRawdata+9); ((mng_clipp)*ppChunk)->iClipt = mng_get_int32 (pRawdata+13); ((mng_clipp)*ppChunk)->iClipb = mng_get_int32 (pRawdata+17); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_CLIP, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_show) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SHOW, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check the length */ if ((iRawlen != 0) && (iRawlen != 2) && (iRawlen != 4) && (iRawlen != 5)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; if (iRawlen) /* determine parameters if any */ { pData->iSHOWfromid = mng_get_uint16 (pRawdata); if (iRawlen > 2) pData->iSHOWtoid = mng_get_uint16 (pRawdata+2); else pData->iSHOWtoid = pData->iSHOWfromid; if (iRawlen > 4) pData->iSHOWmode = *(pRawdata+4); else pData->iSHOWmode = 0; } else /* use defaults then */ { pData->iSHOWmode = 2; pData->iSHOWfromid = 1; pData->iSHOWtoid = 65535; } /* create a SHOW animation object */ iRetcode = create_ani_show (pData, pData->iSHOWfromid, pData->iSHOWtoid, pData->iSHOWmode); if (!iRetcode) /* go and do it! */ iRetcode = process_display_show (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_showp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { ((mng_showp)*ppChunk)->iFirstid = mng_get_uint16 (pRawdata); if (iRawlen > 2) ((mng_showp)*ppChunk)->iLastid = mng_get_uint16 (pRawdata+2); if (iRawlen > 4) ((mng_showp)*ppChunk)->iMode = *(pRawdata+4); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SHOW, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_term) { mng_uint8 iTermaction; mng_uint8 iIteraction = 0; mng_uint32 iDelay = 0; mng_uint32 iItermax = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TERM, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->bHasLOOP) /* no way, jose! */ MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->bHasTERM) /* only 1 allowed! */ MNG_ERROR (pData, MNG_MULTIPLEERROR) /* check the length */ if ((iRawlen != 1) && (iRawlen != 10)) MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasTERM = MNG_TRUE; /* TODO: remove in 1.0.0 !!! */ if ((!pData->bHasSAVE) && (pData->iChunkseq > 2)) pData->bEMNGMAhack = MNG_TRUE; iTermaction = *pRawdata; /* get the fields */ if (iRawlen > 1) { iIteraction = *(pRawdata+1); iDelay = mng_get_uint32 (pRawdata+2); iItermax = mng_get_uint32 (pRawdata+6); } if (pData->fProcessterm) /* inform the app ? */ if (!pData->fProcessterm (((mng_handle)pData), iTermaction, iIteraction, iDelay, iItermax)) MNG_ERROR (pData, MNG_APPMISCERROR) #ifdef MNG_SUPPORT_DISPLAY { /* create the TERM ani-object */ mng_retcode iRetcode = create_ani_term (pData, iTermaction, iIteraction, iDelay, iItermax); if (iRetcode) /* on error bail out */ return iRetcode; /* save for future reference */ pData->pTermaniobj = pData->pLastaniobj; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_termp)*ppChunk)->iTermaction = iTermaction; ((mng_termp)*ppChunk)->iIteraction = iIteraction; ((mng_termp)*ppChunk)->iDelay = iDelay; ((mng_termp)*ppChunk)->iItermax = iItermax; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_TERM, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_save) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SAVE, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (pData->bHasSAVE)) MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) pData->bHasSAVE = MNG_TRUE; if (pData->fProcesssave) /* inform the application ? */ { mng_bool bOke = pData->fProcesssave ((mng_handle)pData); if (!bOke) MNG_ERROR (pData, MNG_APPMISCERROR) } #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; /* TODO: something with the parameters */ /* create a SAVE animation object */ iRetcode = create_ani_save (pData); if (!iRetcode) /* process it */ iRetcode = process_display_save (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_savep)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) /* not empty ? */ { mng_uint8 iOtype = *pRawdata; mng_uint8 iEtype; mng_uint32 iCount = 0; mng_uint8p pTemp; mng_uint8p pNull; mng_uint32 iLen; mng_uint32 iOffset[2]; mng_uint32 iStarttime[2]; mng_uint32 iFramenr; mng_uint32 iLayernr; mng_uint32 iX; mng_save_entryp pEntry = MNG_NULL; mng_uint32 iNamesize; if ((iOtype != 4) && (iOtype != 8)) MNG_ERROR (pData, MNG_INVOFFSETSIZE); ((mng_savep)*ppChunk)->iOffsettype = iOtype; for (iX = 0; iX < 2; iX++) /* do this twice to get the count first ! */ { pTemp = pRawdata + 1; iLen = iRawlen - 1; if (iX) /* second run ? */ { MNG_ALLOC (pData, pEntry, (iCount * sizeof (mng_save_entry))) ((mng_savep)*ppChunk)->iCount = iCount; ((mng_savep)*ppChunk)->pEntries = pEntry; } while (iLen) /* anything left ? */ { iEtype = *pTemp; /* entrytype */ if ((iEtype != 0) && (iEtype != 1) && (iEtype != 2) && (iEtype != 3)) MNG_ERROR (pData, MNG_INVENTRYTYPE); pTemp++; if (iEtype > 1) { iOffset [0] = 0; iOffset [1] = 0; iStarttime [0] = 0; iStarttime [1] = 0; iLayernr = 0; iFramenr = 0; } else { if (iOtype == 4) { iOffset [0] = 0; iOffset [1] = mng_get_uint32 (pTemp); pTemp += 4; } else { iOffset [0] = mng_get_uint32 (pTemp); iOffset [1] = mng_get_uint32 (pTemp+4); pTemp += 8; } if (iEtype > 0) { iStarttime [0] = 0; iStarttime [1] = 0; iLayernr = 0; iFramenr = 0; } else { if (iOtype == 4) { iStarttime [0] = 0; iStarttime [1] = mng_get_uint32 (pTemp+0); iLayernr = mng_get_uint32 (pTemp+4); iFramenr = mng_get_uint32 (pTemp+8); pTemp += 12; } else { iStarttime [0] = mng_get_uint32 (pTemp+0); iStarttime [1] = mng_get_uint32 (pTemp+4); iLayernr = mng_get_uint32 (pTemp+8); iFramenr = mng_get_uint32 (pTemp+12); pTemp += 16; } } } pNull = find_null (pTemp); /* get the name length */ if ((pNull - pRawdata) > (mng_int32)iRawlen) { iNamesize = iLen; /* no null found; so end of SAVE */ iLen = 0; } else { iNamesize = pNull - pTemp; /* should be another entry */ iLen -= iNamesize; if (!iLen) /* must not end with a null ! */ MNG_ERROR (pData, MNG_ENDWITHNULL) } if (!pEntry) { iCount++; } else { pEntry->iEntrytype = iEtype; pEntry->iOffset [0] = iOffset [0]; pEntry->iOffset [1] = iOffset [1]; pEntry->iStarttime [0] = iStarttime [0]; pEntry->iStarttime [1] = iStarttime [1]; pEntry->iLayernr = iLayernr; pEntry->iFramenr = iFramenr; pEntry->iNamesize = iNamesize; if (iNamesize) { MNG_ALLOC (pData, pEntry->zName, iNamesize+1) MNG_COPY (pEntry->zName, pTemp, iNamesize) } pEntry++; } pTemp += iNamesize; } } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SAVE, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_seek) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SEEK, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasSAVE)) MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->fProcessseek) /* inform the app ? */ { mng_bool bOke; mng_pchar zName; MNG_ALLOC (pData, zName, iRawlen + 1) if (iRawlen) MNG_COPY (zName, pRawdata, iRawlen) bOke = pData->fProcessseek ((mng_handle)pData, zName); MNG_FREEX (pData, zName, iRawlen + 1) if (!bOke) MNG_ERROR (pData, MNG_APPMISCERROR) } #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; /* TODO: something with the name ??? */ /* create a SEEK animation object */ iRetcode = create_ani_seek (pData); if (!iRetcode) /* process it */ iRetcode = process_display_seek (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_seekp)*ppChunk)->iNamesize = iRawlen; if (iRawlen) { MNG_ALLOC (pData, ((mng_seekp)*ppChunk)->zName, iRawlen+1) MNG_COPY (((mng_seekp)*ppChunk)->zName, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_SEEK, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_expi) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_EXPI, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 3) /* check the length */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_expip)*ppChunk)->iSnapshotid = mng_get_uint16 (pRawdata); ((mng_expip)*ppChunk)->iNamesize = iRawlen - 2; if (((mng_expip)*ppChunk)->iNamesize) { MNG_ALLOC (pData, ((mng_expip)*ppChunk)->zName, ((mng_expip)*ppChunk)->iNamesize + 1) MNG_COPY (((mng_expip)*ppChunk)->zName, pRawdata+2, ((mng_expip)*ppChunk)->iNamesize) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_EXPI, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_fpri) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_FPRI, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 2) /* must be two bytes long */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_fprip)*ppChunk)->iDeltatype = *pRawdata; ((mng_fprip)*ppChunk)->iPriority = *(pRawdata+1); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_FPRI, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ mng_bool CheckKeyword (mng_datap pData, mng_uint8p pKeyword) { mng_chunkid handled_chunks [] = { MNG_UINT_BACK, MNG_UINT_BASI, MNG_UINT_CLIP, MNG_UINT_CLON, /* TODO: MNG_UINT_DBYK, */ MNG_UINT_DEFI, MNG_UINT_DHDR, MNG_UINT_DISC, /* TODO: MNG_UINT_DROP, */ MNG_UINT_ENDL, MNG_UINT_FRAM, MNG_UINT_IDAT, MNG_UINT_IEND, MNG_UINT_IHDR, MNG_UINT_IJNG, MNG_UINT_IPNG, #ifdef MNG_INCLUDE_JNG MNG_UINT_JDAA, MNG_UINT_JDAT, MNG_UINT_JHDR, /* TODO: MNG_UINT_JSEP, */ MNG_UINT_JdAA, #endif MNG_UINT_LOOP, MNG_UINT_MAGN, MNG_UINT_MEND, MNG_UINT_MHDR, MNG_UINT_MOVE, /* TODO: MNG_UINT_ORDR, */ /* TODO: MNG_UINT_PAST, */ MNG_UINT_PLTE, MNG_UINT_PPLT, MNG_UINT_PROM, MNG_UINT_SAVE, MNG_UINT_SEEK, MNG_UINT_SHOW, MNG_UINT_TERM, MNG_UINT_bKGD, MNG_UINT_cHRM, /* TODO: MNG_UINT_eXPI, */ /* TODO: MNG_UINT_fPRI, */ MNG_UINT_gAMA, /* TODO: MNG_UINT_hIST, */ MNG_UINT_iCCP, MNG_UINT_iTXt, MNG_UINT_nEED, /* TODO: MNG_UINT_oFFs, */ /* TODO: MNG_UINT_pCAL, */ /* TODO: MNG_UINT_pHYg, */ /* TODO: MNG_UINT_pHYs, */ /* TODO: MNG_UINT_sBIT, */ /* TODO: MNG_UINT_sCAL, */ /* TODO: MNG_UINT_sPLT, */ MNG_UINT_sRGB, MNG_UINT_tEXt, MNG_UINT_tIME, MNG_UINT_tRNS, MNG_UINT_zTXt, }; mng_bool bOke = MNG_FALSE; if (pData->fProcessneed) /* does the app handle it ? */ bOke = pData->fProcessneed ((mng_handle)pData, (mng_pchar)pKeyword); if (!bOke) { /* find the keyword length */ mng_uint8p pNull = find_null (pKeyword); if (pNull - pKeyword == 4) /* test a chunk ? */ { /* get the chunk-id */ mng_chunkid iChunkid = (*pKeyword << 24) + (*(pKeyword+1) << 16) + (*(pKeyword+2) << 8) + (*(pKeyword+3) ); /* binary search variables */ mng_int32 iTop, iLower, iUpper, iMiddle; /* determine max index of table */ iTop = (sizeof (handled_chunks) / sizeof (handled_chunks [0])) - 1; /* binary search; with 52 chunks, worst-case is 7 comparisons */ iLower = 0; iMiddle = iTop >> 1; iUpper = iTop; do /* the binary search itself */ { if (handled_chunks [iMiddle] < iChunkid) iLower = iMiddle + 1; else if (handled_chunks [iMiddle] > iChunkid) iUpper = iMiddle - 1; else { bOke = MNG_TRUE; break; } iMiddle = (iLower + iUpper) >> 1; } while (iLower <= iUpper); } /* test draft ? */ if ((!bOke) && (pNull - pKeyword == 8) && (*pKeyword == 'd') && (*(pKeyword+1) == 'r') && (*(pKeyword+2) == 'a') && (*(pKeyword+3) == 'f') && (*(pKeyword+4) == 't') && (*(pKeyword+5) == ' ')) { mng_uint32 iDraft; iDraft = (*(pKeyword+6) - '0') * 10 + (*(pKeyword+7) - '0'); bOke = (mng_bool)(iDraft <= MNG_MNG_DRAFT); } /* test MNG 1.0 ? */ if ((!bOke) && (pNull - pKeyword == 7) && (*pKeyword == 'M') && (*(pKeyword+1) == 'N') && (*(pKeyword+2) == 'G') && (*(pKeyword+3) == '-') && (*(pKeyword+4) == '1') && (*(pKeyword+5) == '.') && (*(pKeyword+6) == '0')) bOke = MNG_TRUE; } return bOke; } /* ************************************************************************** */ READ_CHUNK (read_need) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_NEED, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 1) /* check the length */ MNG_ERROR (pData, MNG_INVALIDLENGTH) { /* let's check it */ mng_bool bOke = MNG_TRUE; mng_pchar zKeywords; mng_uint8p pNull, pTemp; MNG_ALLOC (pData, zKeywords, iRawlen + 1) if (iRawlen) MNG_COPY (zKeywords, pRawdata, iRawlen) pTemp = (mng_uint8p)zKeywords; pNull = find_null (pTemp); while ((bOke) && (pNull < (mng_uint8p)zKeywords + iRawlen)) { bOke = CheckKeyword (pData, pTemp); pTemp = pNull + 1; pNull = find_null (pTemp); } if (bOke) bOke = CheckKeyword (pData, pTemp); MNG_FREEX (pData, zKeywords, iRawlen + 1) if (!bOke) MNG_ERROR (pData, MNG_UNSUPPORTEDNEED) } #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_needp)*ppChunk)->iKeywordssize = iRawlen; if (iRawlen) { MNG_ALLOC (pData, ((mng_needp)*ppChunk)->zKeywords, iRawlen+1) MNG_COPY (((mng_needp)*ppChunk)->zKeywords, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_NEED, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_phyg) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PHYG, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* it's 9 bytes or empty; no more, no less! */ if ((iRawlen != 9) && (iRawlen != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_phygp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); if (iRawlen) { ((mng_phygp)*ppChunk)->iSizex = mng_get_uint32 (pRawdata); ((mng_phygp)*ppChunk)->iSizey = mng_get_uint32 (pRawdata+4); ((mng_phygp)*ppChunk)->iUnit = *(pRawdata+8); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PHYG, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG READ_CHUNK (read_jhdr) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JHDR, MNG_LC_START) #endif /* sequence checks */ if ((pData->eSigtype != mng_it_jng) && (pData->eSigtype != mng_it_mng)) MNG_ERROR (pData, MNG_CHUNKNOTALLOWED) if ((pData->eSigtype == mng_it_jng) && (pData->iChunkseq > 1)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 16) /* length oke ? */ MNG_ERROR (pData, MNG_INVALIDLENGTH) /* inside a JHDR-IEND block now */ pData->bHasJHDR = MNG_TRUE; /* and store interesting fields */ pData->iDatawidth = mng_get_uint32 (pRawdata); pData->iDataheight = mng_get_uint32 (pRawdata+4); pData->iJHDRcolortype = *(pRawdata+8); pData->iJHDRimgbitdepth = *(pRawdata+9); pData->iJHDRimgcompression = *(pRawdata+10); pData->iJHDRimginterlace = *(pRawdata+11); pData->iJHDRalphabitdepth = *(pRawdata+12); pData->iJHDRalphacompression = *(pRawdata+13); pData->iJHDRalphafilter = *(pRawdata+14); pData->iJHDRalphainterlace = *(pRawdata+15); /* parameter validity checks */ if ((pData->iJHDRcolortype != MNG_COLORTYPE_JPEGGRAY ) && (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGCOLOR ) && (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGGRAYA ) && (pData->iJHDRcolortype != MNG_COLORTYPE_JPEGCOLORA) ) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) if ((pData->iJHDRimgbitdepth != 8) && (pData->iJHDRimgbitdepth != 12) && (pData->iJHDRimgbitdepth != 20) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (pData->iJHDRimgcompression != MNG_COMPRESSION_BASELINEJPEG) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if ((pData->iJHDRimginterlace != MNG_INTERLACE_SETQUENTIAL ) && (pData->iJHDRimginterlace != MNG_INTERLACE_PROGRESSIVE) ) MNG_ERROR (pData, MNG_INVALIDINTERLACE) if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) { if ((pData->iJHDRalphabitdepth != 1) && (pData->iJHDRalphabitdepth != 2) && (pData->iJHDRalphabitdepth != 4) && (pData->iJHDRalphabitdepth != 8) && (pData->iJHDRalphabitdepth != 16) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if ((pData->iJHDRalphacompression != MNG_COMPRESSION_DEFLATE ) && (pData->iJHDRalphacompression != MNG_COMPRESSION_BASELINEJPEG) ) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if ((pData->iJHDRalphacompression == MNG_COMPRESSION_BASELINEJPEG) && (pData->iJHDRalphabitdepth != 8 ) ) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (pData->iJHDRalphafilter & (~MNG_FILTER_DIFFERING)) MNG_ERROR (pData, MNG_INVALIDFILTER) if ((pData->iJHDRalphainterlace != MNG_INTERLACE_NONE ) && (pData->iJHDRalphainterlace != MNG_INTERLACE_ADAM7) ) MNG_ERROR (pData, MNG_INVALIDINTERLACE) } else { if (pData->iJHDRalphabitdepth != 0) MNG_ERROR (pData, MNG_INVALIDBITDEPTH) if (pData->iJHDRalphacompression != 0) MNG_ERROR (pData, MNG_INVALIDCOMPRESS) if (pData->iJHDRalphafilter != 0) MNG_ERROR (pData, MNG_INVALIDFILTER) if (pData->iJHDRalphainterlace != 0) MNG_ERROR (pData, MNG_INVALIDINTERLACE) } if (!pData->bHasheader) /* first chunk ? */ { pData->bHasheader = MNG_TRUE; /* we've got a header */ pData->eImagetype = mng_it_jng; /* then this must be a JNG */ pData->iWidth = mng_get_uint32 (pRawdata); pData->iHeight = mng_get_uint32 (pRawdata+4); /* predict alpha-depth ! */ if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) pData->iAlphadepth = pData->iJHDRalphabitdepth; else pData->iAlphadepth = 0; /* fits on maximum canvas ? */ if ((pData->iWidth > pData->iMaxwidth) || (pData->iHeight > pData->iMaxheight)) MNG_WARNING (pData, MNG_IMAGETOOLARGE) if (pData->fProcessheader) /* inform the app ? */ if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) MNG_ERROR (pData, MNG_APPMISCERROR) } pData->iColortype = 0; /* fake grayscale for other routines */ pData->iImagelevel++; /* one level deeper */ #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode = process_display_jhdr (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_jhdrp)*ppChunk)->iWidth = mng_get_uint32 (pRawdata); ((mng_jhdrp)*ppChunk)->iHeight = mng_get_uint32 (pRawdata+4); ((mng_jhdrp)*ppChunk)->iColortype = *(pRawdata+8); ((mng_jhdrp)*ppChunk)->iImagesampledepth = *(pRawdata+9); ((mng_jhdrp)*ppChunk)->iImagecompression = *(pRawdata+10); ((mng_jhdrp)*ppChunk)->iImageinterlace = *(pRawdata+11); ((mng_jhdrp)*ppChunk)->iAlphasampledepth = *(pRawdata+12); ((mng_jhdrp)*ppChunk)->iAlphacompression = *(pRawdata+13); ((mng_jhdrp)*ppChunk)->iAlphafilter = *(pRawdata+14); ((mng_jhdrp)*ppChunk)->iAlphainterlace = *(pRawdata+15); } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JHDR, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } #else #define read_jhdr 0 #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG READ_CHUNK (read_jdaa) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JDAA, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasJHDR) && (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->bHasJSEP) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (pData->iJHDRalphacompression != MNG_COMPRESSION_BASELINEJPEG) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen == 0) /* can never be empty */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasJDAA = MNG_TRUE; /* got some JDAA now, don't we */ #ifdef MNG_SUPPORT_DISPLAY if (iRawlen) { /* display processing for non-empty chunks */ mng_retcode iRetcode = process_display_jdaa (pData, iRawlen, pRawdata); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_jdaap)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_jdaap)*ppChunk)->iDatasize = iRawlen; if (iRawlen != 0) /* is there any data ? */ { MNG_ALLOC (pData, ((mng_jdaap)*ppChunk)->pData, iRawlen) MNG_COPY (((mng_jdaap)*ppChunk)->pData, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JDAA, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } #else #define read_jdaa 0 #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG READ_CHUNK (read_jdat) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JDAT, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasJHDR) && (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen == 0) /* can never be empty */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasJDAT = MNG_TRUE; /* got some JDAT now, don't we */ #ifdef MNG_SUPPORT_DISPLAY if (iRawlen) { /* display processing for non-empty chunks */ mng_retcode iRetcode = process_display_jdat (pData, iRawlen, pRawdata); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_jdatp)*ppChunk)->bEmpty = (mng_bool)(iRawlen == 0); ((mng_jdatp)*ppChunk)->iDatasize = iRawlen; if (iRawlen != 0) /* is there any data ? */ { MNG_ALLOC (pData, ((mng_jdatp)*ppChunk)->pData, iRawlen) MNG_COPY (((mng_jdatp)*ppChunk)->pData, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JDAT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } #else #define read_jdat 0 #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG READ_CHUNK (read_jsep) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JSEP, MNG_LC_START) #endif if (!pData->bHasJHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 0) /* must be empty ! */ MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasJSEP = MNG_TRUE; /* indicate we've had the 8-/12-bit separator */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_JSEP, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } #else #define read_jsep 0 #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ READ_CHUNK (read_dhdr) { mng_uint8 iImagetype, iDeltatype; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DHDR, MNG_LC_START) #endif if (!pData->bHasMHDR) /* sequence checks */ MNG_ERROR (pData, MNG_SETQUENCEERROR) #ifdef MNG_INCLUDE_JNG if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((pData->bHasIHDR) || (pData->bHasBASI) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check for valid length */ if ((iRawlen != 4) && (iRawlen != 12) && (iRawlen != 20)) MNG_ERROR (pData, MNG_INVALIDLENGTH) iImagetype = *(pRawdata+2); /* check fields for validity */ iDeltatype = *(pRawdata+3); if (iImagetype > MNG_IMAGETYPE_JNG) MNG_ERROR (pData, MNG_INVIMAGETYPE) if (iDeltatype > MNG_DELTATYPE_NOCHANGE) MNG_ERROR (pData, MNG_INVDELTATYPE) if ((iDeltatype == MNG_DELTATYPE_REPLACE) && (iRawlen > 12)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((iDeltatype == MNG_DELTATYPE_NOCHANGE) && (iRawlen > 4)) MNG_ERROR (pData, MNG_INVALIDLENGTH) pData->bHasDHDR = MNG_TRUE; /* inside a DHDR-IEND block now */ pData->iImagelevel++; /* one level deeper */ #ifdef MNG_SUPPORT_DISPLAY { mng_uint16 iObjectid = mng_get_uint16 (pRawdata); mng_uint32 iBlockwidth = 0; mng_uint32 iBlockheight = 0; mng_uint32 iBlockx = 0; mng_uint32 iBlocky = 0; mng_retcode iRetcode; if (iRawlen > 4) { iBlockwidth = mng_get_uint32 (pRawdata+4); iBlockheight = mng_get_uint32 (pRawdata+8); } if (iRawlen > 12) { iBlockx = mng_get_uint32 (pRawdata+12); iBlocky = mng_get_uint32 (pRawdata+16); } iRetcode = create_ani_dhdr (pData, iObjectid, iImagetype, iDeltatype, iBlockwidth, iBlockheight, iBlockx, iBlocky); if (!iRetcode) /* display processing ? */ iRetcode = process_display_dhdr (pData, iObjectid, iImagetype, iDeltatype, iBlockwidth, iBlockheight, iBlockx, iBlocky); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_dhdrp)*ppChunk)->iObjectid = mng_get_uint16 (pRawdata); ((mng_dhdrp)*ppChunk)->iImagetype = iImagetype; ((mng_dhdrp)*ppChunk)->iDeltatype = iDeltatype; if (iRawlen > 4) { ((mng_dhdrp)*ppChunk)->iBlockwidth = mng_get_uint32 (pRawdata+4); ((mng_dhdrp)*ppChunk)->iBlockheight = mng_get_uint32 (pRawdata+8); } if (iRawlen > 12) { ((mng_dhdrp)*ppChunk)->iBlockx = mng_get_uint32 (pRawdata+12); ((mng_dhdrp)*ppChunk)->iBlocky = mng_get_uint32 (pRawdata+16); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DHDR, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_prom) { mng_uint8 iColortype; mng_uint8 iSampledepth; mng_uint8 iFilltype; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PROM, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 3) /* gotta be exactly 3 bytes */ MNG_ERROR (pData, MNG_INVALIDLENGTH) iColortype = *pRawdata; /* check fields for validity */ iSampledepth = *(pRawdata+1); iFilltype = *(pRawdata+2); if ((iColortype != MNG_COLORTYPE_GRAY ) && (iColortype != MNG_COLORTYPE_RGB ) && (iColortype != MNG_COLORTYPE_INDEXED) && (iColortype != MNG_COLORTYPE_GRAYA ) && (iColortype != MNG_COLORTYPE_RGBA ) ) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) if ((iSampledepth != MNG_BITDEPTH_1 ) && (iSampledepth != MNG_BITDEPTH_2 ) && (iSampledepth != MNG_BITDEPTH_4 ) && (iSampledepth != MNG_BITDEPTH_8 ) && (iSampledepth != MNG_BITDEPTH_16) ) MNG_ERROR (pData, MNG_INVSAMPLEDEPTH) if ((iFilltype != MNG_FILLMETHOD_LEFTBITREPLICATE) && (iFilltype != MNG_FILLMETHOD_ZEROFILL ) ) MNG_ERROR (pData, MNG_INVFILLMETHOD) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode = create_ani_prom (pData, iSampledepth, iColortype, iFilltype); if (!iRetcode) /* display processing ? */ iRetcode = process_display_prom (pData, iSampledepth, iColortype, iFilltype); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_promp)*ppChunk)->iColortype = iColortype; ((mng_promp)*ppChunk)->iSampledepth = iSampledepth; ((mng_promp)*ppChunk)->iFilltype = iFilltype; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PROM, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_ipng) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IPNG, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 0) /* gotta be empty */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode = create_ani_ipng (pData); if (!iRetcode) /* process it */ iRetcode = process_display_ipng (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IPNG, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_pplt) { mng_uint8 iDeltatype; mng_uint8p pTemp; mng_uint32 iLen; mng_uint8 iX, iM; mng_uint32 iY; mng_uint32 iMax; mng_rgbpaltab aIndexentries; mng_uint8arr aAlphaentries; mng_uint8arr aUsedentries; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PPLT, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) && (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 1) /* must have at least 1 byte */ MNG_ERROR (pData, MNG_INVALIDLENGTH) iDeltatype = *pRawdata; /* valid ? */ if (iDeltatype > MNG_DELTATYPE_DELTARGBA) MNG_ERROR (pData, MNG_INVDELTATYPE) /* must be indexed color ! */ if (pData->iColortype != MNG_COLORTYPE_INDEXED) MNG_ERROR (pData, MNG_INVALIDCOLORTYPE) pTemp = pRawdata + 1; iLen = iRawlen - 1; iMax = 0; for (iY = 0; iY < 256; iY++) /* reset arrays */ { aIndexentries [iY].iRed = 0; aIndexentries [iY].iGreen = 0; aIndexentries [iY].iBlue = 0; aAlphaentries [iY] = 255; aUsedentries [iY] = 0; } while (iLen) /* as long as there are entries left ... */ { mng_uint32 iDiff; if (iLen < 2) MNG_ERROR (pData, MNG_INVALIDLENGTH) iX = *pTemp; /* get start and end index */ iM = *(pTemp+1); if (iM < iX) MNG_ERROR (pData, MNG_INVALIDINDEX) if ((mng_uint32)iM >= iMax) /* determine highest used index */ iMax = (mng_uint32)iM + 1; pTemp += 2; iLen -= 2; if ((iDeltatype == MNG_DELTATYPE_REPLACERGB ) || (iDeltatype == MNG_DELTATYPE_DELTARGB ) ) iDiff = (iM - iX + 1) * 3; else if ((iDeltatype == MNG_DELTATYPE_REPLACEALPHA) || (iDeltatype == MNG_DELTATYPE_DELTAALPHA ) ) iDiff = (iM - iX + 1); else iDiff = (iM - iX + 1) * 4; if (iLen < iDiff) MNG_ERROR (pData, MNG_INVALIDLENGTH) if ((iDeltatype == MNG_DELTATYPE_REPLACERGB ) || (iDeltatype == MNG_DELTATYPE_DELTARGB ) ) { for (iY = (mng_uint32)iX; iY <= (mng_uint32)iM; iY++) { aIndexentries [iY].iRed = *pTemp; aIndexentries [iY].iGreen = *(pTemp+1); aIndexentries [iY].iBlue = *(pTemp+2); aUsedentries [iY] = 1; pTemp += 3; iLen -= 3; } } else if ((iDeltatype == MNG_DELTATYPE_REPLACEALPHA) || (iDeltatype == MNG_DELTATYPE_DELTAALPHA ) ) { for (iY = (mng_uint32)iX; iY <= (mng_uint32)iM; iY++) { aAlphaentries [iY] = *pTemp; aUsedentries [iY] = 1; pTemp++; iLen--; } } else { for (iY = (mng_uint32)iX; iY <= (mng_uint32)iM; iY++) { aIndexentries [iY].iRed = *pTemp; aIndexentries [iY].iGreen = *(pTemp+1); aIndexentries [iY].iBlue = *(pTemp+2); aAlphaentries [iY] = *(pTemp+3); aUsedentries [iY] = 1; pTemp += 4; iLen -= 4; } } } switch (pData->iBitdepth) /* check maximum allowed entries for bitdepth */ { case MNG_BITDEPTH_1 : { if (iMax > 2) MNG_ERROR (pData, MNG_INVALIDINDEX) break; } case MNG_BITDEPTH_2 : { if (iMax > 4) MNG_ERROR (pData, MNG_INVALIDINDEX) break; } case MNG_BITDEPTH_4 : { if (iMax > 16) MNG_ERROR (pData, MNG_INVALIDINDEX) break; } } #ifdef MNG_SUPPORT_DISPLAY { /* create animation object */ mng_retcode iRetcode = create_ani_pplt (pData, iDeltatype, iMax, aIndexentries, aAlphaentries, aUsedentries); if (!iRetcode) /* execute it now ? */ iRetcode = process_display_pplt (pData, iDeltatype, iMax, aIndexentries, aAlphaentries, aUsedentries); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_ppltp)*ppChunk)->iDeltatype = iDeltatype; ((mng_ppltp)*ppChunk)->iCount = iMax; for (iY = 0; iY < 256; iY++) { ((mng_ppltp)*ppChunk)->aEntries [iY].iRed = aIndexentries [iY].iRed; ((mng_ppltp)*ppChunk)->aEntries [iY].iGreen = aIndexentries [iY].iGreen; ((mng_ppltp)*ppChunk)->aEntries [iY].iBlue = aIndexentries [iY].iBlue; ((mng_ppltp)*ppChunk)->aEntries [iY].iAlpha = aAlphaentries [iY]; ((mng_ppltp)*ppChunk)->aEntries [iY].bUsed = (mng_bool)(aUsedentries [iY]); } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_PPLT, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_ijng) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IJNG, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen != 0) /* gotta be empty */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode = create_ani_ijng (pData); if (!iRetcode) /* process it */ iRetcode = process_display_ijng (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_IJNG, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_drop) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DROP, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check length */ if ((iRawlen < 4) || ((iRawlen % 4) != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_dropp)*ppChunk)->iCount = iRawlen / 4; if (iRawlen) { mng_uint32 iX; mng_uint8p pTemp = pRawdata; mng_uint32p pEntry; MNG_ALLOC (pData, pEntry, iRawlen) ((mng_dropp)*ppChunk)->pChunknames = (mng_ptr)pEntry; for (iX = 0; iX < iRawlen / 4; iX++) { *pEntry = mng_get_uint32 (pTemp); pTemp += 4; pEntry++; } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DROP, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_dbyk) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DBYK, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) if (iRawlen < 6) /* must be at least 6 long */ MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_dbykp)*ppChunk)->iChunkname = mng_get_uint32 (pRawdata); ((mng_dbykp)*ppChunk)->iPolarity = *(pRawdata+4); ((mng_dbykp)*ppChunk)->iKeywordssize = iRawlen - 5; if (iRawlen > 5) { MNG_ALLOC (pData, ((mng_dbykp)*ppChunk)->zKeywords, iRawlen-4) MNG_COPY (((mng_dbykp)*ppChunk)->zKeywords, pRawdata+5, iRawlen-5) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_DBYK, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_ordr) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ORDR, MNG_LC_START) #endif /* sequence checks */ if ((!pData->bHasMHDR) || (!pData->bHasDHDR)) MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check length */ if ((iRawlen < 5) || ((iRawlen % 5) != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) #ifdef MNG_SUPPORT_DISPLAY { /* TODO: something !!! */ } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_ordrp)*ppChunk)->iCount = iRawlen / 5; if (iRawlen) { mng_uint32 iX; mng_ordr_entryp pEntry; mng_uint8p pTemp = pRawdata; MNG_ALLOC (pData, pEntry, iRawlen) ((mng_ordrp)*ppChunk)->pEntries = pEntry; for (iX = 0; iX < iRawlen / 5; iX++) { pEntry->iChunkname = mng_get_uint32 (pTemp); pEntry->iOrdertype = *(pTemp+4); pTemp += 5; pEntry++; } } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_ORDR, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_magn) { mng_uint16 iFirstid, iLastid; mng_uint16 iMethodX, iMethodY; mng_uint16 iMX, iMY, iML, iMR, iMT, iMB; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MAGN, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_SUPPORT_JNG if ((!pData->bHasMHDR) || (pData->bHasIHDR) || (pData->bHasDHDR) || (pData->bHasJHDR)) #else if ((!pData->bHasMHDR) || (pData->bHasIHDR) || (pData->bHasDHDR)) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* check length */ if ((iRawlen > 20) || ((iRawlen & 0x01) != 0)) MNG_ERROR (pData, MNG_INVALIDLENGTH) if (iRawlen > 0) /* get the fields */ iFirstid = mng_get_uint16 (pRawdata); else iFirstid = 0; if (iRawlen > 2) iLastid = mng_get_uint16 (pRawdata+2); else iLastid = iFirstid; if (iRawlen > 4) iMethodX = mng_get_uint16 (pRawdata+4); else iMethodX = 0; if (iRawlen > 6) iMX = mng_get_uint16 (pRawdata+6); else iMX = 1; if (iRawlen > 8) iMY = mng_get_uint16 (pRawdata+8); else iMY = iMX; if (iRawlen > 10) iML = mng_get_uint16 (pRawdata+10); else iML = iMX; if (iRawlen > 12) iMR = mng_get_uint16 (pRawdata+12); else iMR = iMX; if (iRawlen > 14) iMT = mng_get_uint16 (pRawdata+14); else iMT = iMY; if (iRawlen > 16) iMB = mng_get_uint16 (pRawdata+16); else iMB = iMY; if (iRawlen > 18) iMethodY = mng_get_uint16 (pRawdata+18); else iMethodY = iMethodX; /* check field validity */ if ((iMethodX > 5) || (iMethodY > 5)) MNG_ERROR (pData, MNG_INVALIDMETHOD) #ifdef MNG_SUPPORT_DISPLAY { mng_retcode iRetcode; iRetcode = create_ani_magn (pData, iFirstid, iLastid, iMethodX, iMX, iMY, iML, iMR, iMT, iMB, iMethodY); if (!iRetcode) /* display processing ? */ iRetcode = process_display_magn (pData, iFirstid, iLastid, iMethodX, iMX, iMY, iML, iMR, iMT, iMB, iMethodY); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_SUPPORT_DISPLAY */ #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the fields */ ((mng_magnp)*ppChunk)->iFirstid = iFirstid; ((mng_magnp)*ppChunk)->iLastid = iLastid; ((mng_magnp)*ppChunk)->iMethodX = iMethodX; ((mng_magnp)*ppChunk)->iMX = iMX; ((mng_magnp)*ppChunk)->iMY = iMY; ((mng_magnp)*ppChunk)->iML = iML; ((mng_magnp)*ppChunk)->iMR = iMR; ((mng_magnp)*ppChunk)->iMT = iMT; ((mng_magnp)*ppChunk)->iMB = iMB; ((mng_magnp)*ppChunk)->iMethodY = iMethodY; } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_MAGN, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ READ_CHUNK (read_unknown) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_UNKNOWN, MNG_LC_START) #endif /* sequence checks */ #ifdef MNG_INCLUDE_JNG if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) && (!pData->bHasJHDR)) #else if ((!pData->bHasMHDR) && (!pData->bHasIHDR) && (!pData->bHasBASI) && (!pData->bHasDHDR) ) #endif MNG_ERROR (pData, MNG_SETQUENCEERROR) /* critical chunk ? */ if (((mng_uint32)pData->iChunkname & 0x20000000) == 0) MNG_ERROR (pData, MNG_UNKNOWNCRITICAL) if (pData->fProcessunknown) /* let the app handle it ? */ { mng_bool bOke = pData->fProcessunknown ((mng_handle)pData, pData->iChunkname, iRawlen, (mng_ptr)pRawdata); if (!bOke) MNG_ERROR (pData, MNG_APPMISCERROR) } #ifdef MNG_STORE_CHUNKS if (pData->bStorechunks) { /* initialize storage */ mng_retcode iRetcode = ((mng_chunk_headerp)pHeader)->fCreate (pData, pHeader, ppChunk); if (iRetcode) /* on error bail out */ return iRetcode; /* store the length */ ((mng_chunk_headerp)*ppChunk)->iChunkname = pData->iChunkname; ((mng_unknown_chunkp)*ppChunk)->iDatasize = iRawlen; if (iRawlen == 0) /* any data at all ? */ ((mng_unknown_chunkp)*ppChunk)->pData = 0; else { /* then store it */ MNG_ALLOC (pData, ((mng_unknown_chunkp)*ppChunk)->pData, iRawlen) MNG_COPY (((mng_unknown_chunkp)*ppChunk)->pData, pRawdata, iRawlen) } } #endif /* MNG_STORE_CHUNKS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_READ_UNKNOWN, MNG_LC_END) #endif return MNG_NOERROR; /* done */ } /* ************************************************************************** */ #endif /* MNG_INCLUDE_READ_PROCS */ /* ************************************************************************** */ /* * * */ /* * chunk write functions * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_WRITE_PROCS /* ************************************************************************** */ WRITE_CHUNK (write_ihdr) { mng_ihdrp pIHDR; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IHDR, MNG_LC_START) #endif pIHDR = (mng_ihdrp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 13; /* fill the output buffer */ mng_put_uint32 (pRawdata, pIHDR->iWidth); mng_put_uint32 (pRawdata+4, pIHDR->iHeight); *(pRawdata+8) = pIHDR->iBitdepth; *(pRawdata+9) = pIHDR->iColortype; *(pRawdata+10) = pIHDR->iCompression; *(pRawdata+11) = pIHDR->iFilter; *(pRawdata+12) = pIHDR->iInterlace; /* and write it */ iRetcode = write_raw_chunk (pData, pIHDR->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IHDR, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_plte) { mng_pltep pPLTE; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PLTE, MNG_LC_START) #endif pPLTE = (mng_pltep)pChunk; /* address the proper chunk */ if (pPLTE->bEmpty) /* write empty chunk ? */ iRetcode = write_raw_chunk (pData, pPLTE->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pPLTE->iEntrycount * 3; /* fill the output buffer */ pTemp = pRawdata; for (iX = 0; iX < pPLTE->iEntrycount; iX++) { *pTemp = pPLTE->aEntries [iX].iRed; *(pTemp+1) = pPLTE->aEntries [iX].iGreen; *(pTemp+2) = pPLTE->aEntries [iX].iBlue; pTemp += 3; } /* and write it */ iRetcode = write_raw_chunk (pData, pPLTE->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PLTE, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_idat) { mng_idatp pIDAT; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IDAT, MNG_LC_START) #endif pIDAT = (mng_idatp)pChunk; /* address the proper chunk */ if (pIDAT->bEmpty) /* and write it */ iRetcode = write_raw_chunk (pData, pIDAT->sHeader.iChunkname, 0, 0); else iRetcode = write_raw_chunk (pData, pIDAT->sHeader.iChunkname, pIDAT->iDatasize, pIDAT->pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IDAT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_iend) { mng_iendp pIEND; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IEND, MNG_LC_START) #endif pIEND = (mng_iendp)pChunk; /* address the proper chunk */ /* and write it */ iRetcode = write_raw_chunk (pData, pIEND->sHeader.iChunkname, 0, 0); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IEND, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_trns) { mng_trnsp pTRNS; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TRNS, MNG_LC_START) #endif pTRNS = (mng_trnsp)pChunk; /* address the proper chunk */ if (pTRNS->bEmpty) /* write empty chunk ? */ iRetcode = write_raw_chunk (pData, pTRNS->sHeader.iChunkname, 0, 0); else if (pTRNS->bGlobal) /* write global chunk ? */ iRetcode = write_raw_chunk (pData, pTRNS->sHeader.iChunkname, pTRNS->iRawlen, (mng_uint8p)pTRNS->aRawdata); else { pRawdata = pData->pWritebuf+8; /* init output buffer */ iRawlen = 0; /* and default size */ switch (pTRNS->iType) { case 0: { iRawlen = 2; /* fill the size & output buffer */ mng_put_uint16 (pRawdata, pTRNS->iGray); break; } case 2: { iRawlen = 6; /* fill the size & output buffer */ mng_put_uint16 (pRawdata, pTRNS->iRed); mng_put_uint16 (pRawdata+2, pTRNS->iGreen); mng_put_uint16 (pRawdata+4, pTRNS->iBlue); break; } case 3: { /* init output buffer size */ iRawlen = pTRNS->iCount; pTemp = pRawdata; /* fill the output buffer */ for (iX = 0; iX < pTRNS->iCount; iX++) { *pTemp = pTRNS->aEntries[iX]; pTemp++; } break; } } /* write the chunk */ iRetcode = write_raw_chunk (pData, pTRNS->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TRNS, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_gama) { mng_gamap pGAMA; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_GAMA, MNG_LC_START) #endif pGAMA = (mng_gamap)pChunk; /* address the proper chunk */ if (pGAMA->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pGAMA->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 4; /* fill the buffer */ mng_put_uint32 (pRawdata, pGAMA->iGamma); /* and write it */ iRetcode = write_raw_chunk (pData, pGAMA->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_GAMA, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_chrm) { mng_chrmp pCHRM; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CHRM, MNG_LC_START) #endif pCHRM = (mng_chrmp)pChunk; /* address the proper chunk */ if (pCHRM->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pCHRM->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 32; /* fill the buffer */ mng_put_uint32 (pRawdata, pCHRM->iWhitepointx); mng_put_uint32 (pRawdata+4, pCHRM->iWhitepointy); mng_put_uint32 (pRawdata+8, pCHRM->iRedx); mng_put_uint32 (pRawdata+12, pCHRM->iRedy); mng_put_uint32 (pRawdata+16, pCHRM->iGreenx); mng_put_uint32 (pRawdata+20, pCHRM->iGreeny); mng_put_uint32 (pRawdata+24, pCHRM->iBluex); mng_put_uint32 (pRawdata+28, pCHRM->iBluey); /* and write it */ iRetcode = write_raw_chunk (pData, pCHRM->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CHRM, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_srgb) { mng_srgbp pSRGB; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SRGB, MNG_LC_START) #endif pSRGB = (mng_srgbp)pChunk; /* address the proper chunk */ if (pSRGB->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pSRGB->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; /* fill the buffer */ *pRawdata = pSRGB->iRenderingintent; /* and write it */ iRetcode = write_raw_chunk (pData, pSRGB->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SRGB, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_iccp) { mng_iccpp pICCP; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint8p pBuf = 0; mng_uint32 iBuflen; mng_uint32 iReallen; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ICCP, MNG_LC_START) #endif pICCP = (mng_iccpp)pChunk; /* address the proper chunk */ if (pICCP->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pICCP->sHeader.iChunkname, 0, 0); else { /* compress the profile */ iRetcode = deflate_buffer (pData, pICCP->pProfile, pICCP->iProfilesize, &pBuf, &iBuflen, &iReallen); if (!iRetcode) /* still oke ? */ { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pICCP->iNamesize + 2 + iReallen; /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) pTemp = pRawdata; /* fill the buffer */ if (pICCP->iNamesize) { MNG_COPY (pTemp, pICCP->zName, pICCP->iNamesize) pTemp += pICCP->iNamesize; } *pTemp = 0; *(pTemp+1) = pICCP->iCompression; pTemp += 2; if (iReallen) MNG_COPY (pTemp, pBuf, iReallen) /* and write it */ iRetcode = write_raw_chunk (pData, pICCP->sHeader.iChunkname, iRawlen, pRawdata); /* drop the temp buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_FREEX (pData, pRawdata, iRawlen) } MNG_FREEX (pData, pBuf, iBuflen) /* always drop the extra buffer */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ICCP, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_text) { mng_textp pTEXT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TEXT, MNG_LC_START) #endif pTEXT = (mng_textp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pTEXT->iKeywordsize + 1 + pTEXT->iTextsize; /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) pTemp = pRawdata; /* fill the buffer */ if (pTEXT->iKeywordsize) { MNG_COPY (pTemp, pTEXT->zKeyword, pTEXT->iKeywordsize) pTemp += pTEXT->iKeywordsize; } *pTemp = 0; pTemp += 1; if (pTEXT->iTextsize) MNG_COPY (pTemp, pTEXT->zText, pTEXT->iTextsize) /* and write it */ iRetcode = write_raw_chunk (pData, pTEXT->sHeader.iChunkname, iRawlen, pRawdata); if (iRawlen > pData->iWritebufsize) /* drop the temp buffer ? */ MNG_FREEX (pData, pRawdata, iRawlen) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TEXT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_ztxt) { mng_ztxtp pZTXT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint8p pBuf = 0; mng_uint32 iBuflen; mng_uint32 iReallen; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ZTXT, MNG_LC_START) #endif pZTXT = (mng_ztxtp)pChunk; /* address the proper chunk */ /* compress the text */ iRetcode = deflate_buffer (pData, (mng_uint8p)pZTXT->zText, pZTXT->iTextsize, &pBuf, &iBuflen, &iReallen); if (!iRetcode) /* all ok ? */ { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pZTXT->iKeywordsize + 2 + iReallen; /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) pTemp = pRawdata; /* fill the buffer */ if (pZTXT->iKeywordsize) { MNG_COPY (pTemp, pZTXT->zKeyword, pZTXT->iKeywordsize) pTemp += pZTXT->iKeywordsize; } *pTemp = 0; /* terminator zero */ pTemp++; *pTemp = 0; /* compression type */ pTemp++; if (iReallen) MNG_COPY (pTemp, pBuf, iReallen) /* and write it */ iRetcode = write_raw_chunk (pData, pZTXT->sHeader.iChunkname, iRawlen, pRawdata); /* drop the temp buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_FREEX (pData, pRawdata, iRawlen) } MNG_FREEX (pData, pBuf, iBuflen); /* always drop the compression buffer */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ZTXT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_itxt) { mng_itxtp pITXT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint8p pBuf = 0; mng_uint32 iBuflen; mng_uint32 iReallen; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ITXT, MNG_LC_START) #endif pITXT = (mng_itxtp)pChunk; /* address the proper chunk */ if (pITXT->iCompressionflag) /* compress the text */ iRetcode = deflate_buffer (pData, (mng_uint8p)pITXT->zText, pITXT->iTextsize, &pBuf, &iBuflen, &iReallen); else iRetcode = MNG_NOERROR; if (!iRetcode) /* all ok ? */ { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pITXT->iKeywordsize + pITXT->iLanguagesize + pITXT->iTranslationsize + 5; if (pITXT->iCompressionflag) iRawlen = iRawlen + iReallen; else iRawlen = iRawlen + pITXT->iTextsize; /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) pTemp = pRawdata; /* fill the buffer */ if (pITXT->iKeywordsize) { MNG_COPY (pTemp, pITXT->zKeyword, pITXT->iKeywordsize) pTemp += pITXT->iKeywordsize; } *pTemp = 0; pTemp++; *pTemp = pITXT->iCompressionflag; pTemp++; *pTemp = pITXT->iCompressionmethod; pTemp++; if (pITXT->iLanguagesize) { MNG_COPY (pTemp, pITXT->zLanguage, pITXT->iLanguagesize) pTemp += pITXT->iLanguagesize; } *pTemp = 0; pTemp++; if (pITXT->iTranslationsize) { MNG_COPY (pTemp, pITXT->zTranslation, pITXT->iTranslationsize) pTemp += pITXT->iTranslationsize; } *pTemp = 0; pTemp++; if (pITXT->iCompressionflag) { if (iReallen) MNG_COPY (pTemp, pBuf, iReallen) } else { if (pITXT->iTextsize) MNG_COPY (pTemp, pITXT->zText, pITXT->iTextsize) } /* and write it */ iRetcode = write_raw_chunk (pData, pITXT->sHeader.iChunkname, iRawlen, pRawdata); /* drop the temp buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_FREEX (pData, pRawdata, iRawlen) } MNG_FREEX (pData, pBuf, iBuflen); /* always drop the compression buffer */ if (iRetcode) /* on error bail out */ return iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ITXT, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ WRITE_CHUNK (write_bkgd) { mng_bkgdp pBKGD; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BKGD, MNG_LC_START) #endif pBKGD = (mng_bkgdp)pChunk; /* address the proper chunk */ if (pBKGD->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pBKGD->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 0; /* and default size */ switch (pBKGD->iType) { case 0: { /* gray */ iRawlen = 2; /* fill the size & output buffer */ mng_put_uint16 (pRawdata, pBKGD->iGray); break; } case 2: { /* rgb */ iRawlen = 6; /* fill the size & output buffer */ mng_put_uint16 (pRawdata, pBKGD->iRed); mng_put_uint16 (pRawdata+2, pBKGD->iGreen); mng_put_uint16 (pRawdata+4, pBKGD->iBlue); break; } case 3: { /* indexed */ iRawlen = 1; /* fill the size & output buffer */ *pRawdata = pBKGD->iIndex; break; } } /* and write it */ iRetcode = write_raw_chunk (pData, pBKGD->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BKGD, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_phys) { mng_physp pPHYS; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PHYS, MNG_LC_START) #endif pPHYS = (mng_physp)pChunk; /* address the proper chunk */ if (pPHYS->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pPHYS->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 9; /* fill the output buffer */ mng_put_uint32 (pRawdata, pPHYS->iSizex); mng_put_uint32 (pRawdata+4, pPHYS->iSizey); *(pRawdata+8) = pPHYS->iUnit; /* and write it */ iRetcode = write_raw_chunk (pData, pPHYS->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PHYS, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_sbit) { mng_sbitp pSBIT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SBIT, MNG_LC_START) #endif pSBIT = (mng_sbitp)pChunk; /* address the proper chunk */ if (pSBIT->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pSBIT->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 0; /* and default size */ switch (pSBIT->iType) { case 0: { /* gray */ iRawlen = 1; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; break; } case 2: { /* rgb */ iRawlen = 3; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; *(pRawdata+2) = pSBIT->aBits[2]; break; } case 3: { /* indexed */ iRawlen = 1; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; break; } case 4: { /* gray + alpha */ iRawlen = 2; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; break; } case 6: { /* rgb + alpha */ iRawlen = 4; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; *(pRawdata+2) = pSBIT->aBits[2]; *(pRawdata+3) = pSBIT->aBits[3]; break; } case 10: { /* jpeg gray */ iRawlen = 1; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; break; } case 12: { /* jpeg rgb */ iRawlen = 3; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; *(pRawdata+2) = pSBIT->aBits[2]; break; } case 14: { /* jpeg gray + alpha */ iRawlen = 2; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; break; } case 16: { /* jpeg rgb + alpha */ iRawlen = 4; /* fill the size & output buffer */ *pRawdata = pSBIT->aBits[0]; *(pRawdata+1) = pSBIT->aBits[1]; *(pRawdata+2) = pSBIT->aBits[2]; *(pRawdata+3) = pSBIT->aBits[3]; break; } } /* and write it */ iRetcode = write_raw_chunk (pData, pSBIT->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SBIT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_splt) { mng_spltp pSPLT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint32 iEntrieslen; mng_uint8p pTemp; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SPLT, MNG_LC_START) #endif pSPLT = (mng_spltp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iEntrieslen = ((pSPLT->iSampledepth >> 3) * 4 + 2) * pSPLT->iEntrycount; iRawlen = pSPLT->iNamesize + 2 + iEntrieslen; /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) pTemp = pRawdata; /* fill the buffer */ if (pSPLT->iNamesize) { MNG_COPY (pTemp, pSPLT->zName, pSPLT->iNamesize) pTemp += pSPLT->iNamesize; } *pTemp = 0; *(pTemp+1) = pSPLT->iSampledepth; pTemp += 2; if (pSPLT->iEntrycount) MNG_COPY (pTemp, pSPLT->pEntries, iEntrieslen) /* and write it */ iRetcode = write_raw_chunk (pData, pSPLT->sHeader.iChunkname, iRawlen, pRawdata); if (iRawlen > pData->iWritebufsize) /* drop the temp buffer ? */ MNG_FREEX (pData, pRawdata, iRawlen) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SPLT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_hist) { mng_histp pHIST; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_HIST, MNG_LC_START) #endif pHIST = (mng_histp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pHIST->iEntrycount << 1; pTemp = pRawdata; /* fill the output buffer */ for (iX = 0; iX < pHIST->iEntrycount; iX++) { mng_put_uint16 (pTemp, pHIST->aEntries [iX]); pTemp += 2; } /* and write it */ iRetcode = write_raw_chunk (pData, pHIST->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_HIST, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_time) { mng_timep pTIME; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TIME, MNG_LC_START) #endif pTIME = (mng_timep)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 7; /* fill the output buffer */ mng_put_uint16 (pRawdata, pTIME->iYear); *(pRawdata+2) = pTIME->iMonth; *(pRawdata+3) = pTIME->iDay; *(pRawdata+4) = pTIME->iHour; *(pRawdata+5) = pTIME->iMinute; *(pRawdata+6) = pTIME->iSecond; /* and write it */ iRetcode = write_raw_chunk (pData, pTIME->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TIME, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_mhdr) { mng_mhdrp pMHDR; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MHDR, MNG_LC_START) #endif pMHDR = (mng_mhdrp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 28; /* fill the output buffer */ mng_put_uint32 (pRawdata, pMHDR->iWidth); mng_put_uint32 (pRawdata+4, pMHDR->iHeight); mng_put_uint32 (pRawdata+8, pMHDR->iTicks); mng_put_uint32 (pRawdata+12, pMHDR->iLayercount); mng_put_uint32 (pRawdata+16, pMHDR->iFramecount); mng_put_uint32 (pRawdata+20, pMHDR->iPlaytime); mng_put_uint32 (pRawdata+24, pMHDR->iSimplicity); /* and write it */ iRetcode = write_raw_chunk (pData, pMHDR->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MHDR, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_mend) { mng_mendp pMEND; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MEND, MNG_LC_START) #endif pMEND = (mng_mendp)pChunk; /* address the proper chunk */ /* and write it */ iRetcode = write_raw_chunk (pData, pMEND->sHeader.iChunkname, 0, 0); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MEND, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_loop) { mng_loopp pLOOP; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp1; mng_uint32p pTemp2; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_LOOP, MNG_LC_START) #endif pLOOP = (mng_loopp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 5; /* fill the output buffer */ *pRawdata = pLOOP->iLevel; mng_put_uint32 (pRawdata+1, pLOOP->iRepeat); if (pLOOP->iTermination) { iRawlen++; *(pRawdata+5) = pLOOP->iTermination; if ((pLOOP->iCount) || (pLOOP->iItermin != 1) || (pLOOP->iItermax != 0x7FFFFFFFL)) { iRawlen += 8; mng_put_uint32 (pRawdata+6, pLOOP->iItermin); mng_put_uint32 (pRawdata+10, pLOOP->iItermax); if (pLOOP->iCount) { iRawlen += pLOOP->iCount * 4; pTemp1 = pRawdata+14; pTemp2 = pLOOP->pSignals; for (iX = 0; iX < pLOOP->iCount; iX++) { mng_put_uint32 (pTemp1, *pTemp2); pTemp1 += 4; pTemp2++; } } } } /* and write it */ iRetcode = write_raw_chunk (pData, pLOOP->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_LOOP, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_endl) { mng_endlp pENDL; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ENDL, MNG_LC_START) #endif pENDL = (mng_endlp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; *pRawdata = pENDL->iLevel; /* fill the output buffer */ /* and write it */ iRetcode = write_raw_chunk (pData, pENDL->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ENDL, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_defi) { mng_defip pDEFI; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DEFI, MNG_LC_START) #endif pDEFI = (mng_defip)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 2; /* fill the output buffer */ mng_put_uint16 (pRawdata, pDEFI->iObjectid); if ((pDEFI->iDonotshow) || (pDEFI->iConcrete) || (pDEFI->bHasloca) || (pDEFI->bHasclip)) { iRawlen++; *(pRawdata+2) = pDEFI->iDonotshow; if ((pDEFI->iConcrete) || (pDEFI->bHasloca) || (pDEFI->bHasclip)) { iRawlen++; *(pRawdata+3) = pDEFI->iConcrete; if ((pDEFI->bHasloca) || (pDEFI->bHasclip)) { iRawlen += 8; mng_put_uint32 (pRawdata+4, pDEFI->iXlocation); mng_put_uint32 (pRawdata+8, pDEFI->iYlocation); if (pDEFI->bHasclip) { iRawlen += 16; mng_put_uint32 (pRawdata+12, pDEFI->iLeftcb); mng_put_uint32 (pRawdata+16, pDEFI->iRightcb); mng_put_uint32 (pRawdata+20, pDEFI->iTopcb); mng_put_uint32 (pRawdata+24, pDEFI->iBottomcb); } } } } /* and write it */ iRetcode = write_raw_chunk (pData, pDEFI->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DEFI, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_basi) { mng_basip pBASI; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_bool bOpaque; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BASI, MNG_LC_START) #endif pBASI = (mng_basip)pChunk; /* address the proper chunk */ if (pBASI->iBitdepth <= 8) /* determine opacity alpha-field */ bOpaque = (mng_bool)(pBASI->iAlpha == 0xFF); else bOpaque = (mng_bool)(pBASI->iAlpha == 0xFFFF); pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 13; /* fill the output buffer */ mng_put_uint32 (pRawdata, pBASI->iWidth); mng_put_uint32 (pRawdata+4, pBASI->iHeight); *(pRawdata+8) = pBASI->iBitdepth; *(pRawdata+9) = pBASI->iColortype; *(pRawdata+10) = pBASI->iCompression; *(pRawdata+11) = pBASI->iFilter; *(pRawdata+12) = pBASI->iInterlace; if ((pBASI->iRed) || (pBASI->iGreen) || (pBASI->iBlue) || (!bOpaque) || (pBASI->iViewable)) { iRawlen += 6; mng_put_uint16 (pRawdata+13, pBASI->iRed); mng_put_uint16 (pRawdata+15, pBASI->iGreen); mng_put_uint16 (pRawdata+17, pBASI->iBlue); if ((!bOpaque) || (pBASI->iViewable)) { iRawlen += 2; mng_put_uint16 (pRawdata+19, pBASI->iAlpha); if (pBASI->iViewable) { iRawlen++; *(pRawdata+21) = pBASI->iViewable; } } } /* and write it */ iRetcode = write_raw_chunk (pData, pBASI->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BASI, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_clon) { mng_clonp pCLON; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CLON, MNG_LC_START) #endif pCLON = (mng_clonp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 4; /* fill the output buffer */ mng_put_uint16 (pRawdata, pCLON->iSourceid); mng_put_uint16 (pRawdata+2, pCLON->iCloneid); if ((pCLON->iClonetype) || (pCLON->iDonotshow) || (pCLON->iConcrete) || (pCLON->bHasloca)) { iRawlen++; *(pRawdata+4) = pCLON->iClonetype; if ((pCLON->iDonotshow) || (pCLON->iConcrete) || (pCLON->bHasloca)) { iRawlen++; *(pRawdata+5) = pCLON->iDonotshow; if ((pCLON->iConcrete) || (pCLON->bHasloca)) { iRawlen++; *(pRawdata+6) = pCLON->iConcrete; if (pCLON->bHasloca) { iRawlen += 9; *(pRawdata+7) = pCLON->iLocationtype; mng_put_int32 (pRawdata+8, pCLON->iLocationx); mng_put_int32 (pRawdata+12, pCLON->iLocationy); } } } } /* and write it */ iRetcode = write_raw_chunk (pData, pCLON->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CLON, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_past) { mng_pastp pPAST; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_past_sourcep pSource; mng_uint32 iX; mng_uint8p pTemp; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PAST, MNG_LC_START) #endif pPAST = (mng_pastp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 11 + (30 * pPAST->iCount); /* requires large buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_ALLOC (pData, pRawdata, iRawlen) /* fill the output buffer */ mng_put_uint16 (pRawdata, pPAST->iDestid); *(pRawdata+2) = pPAST->iTargettype; mng_put_int32 (pRawdata+3, pPAST->iTargetx); mng_put_int32 (pRawdata+7, pPAST->iTargety); pTemp = pRawdata+11; pSource = pPAST->pSources; for (iX = 0; iX < pPAST->iCount; iX++) { mng_put_uint16 (pTemp, pSource->iSourceid); *(pTemp+2) = pSource->iComposition; *(pTemp+3) = pSource->iOrientation; *(pTemp+4) = pSource->iOffsettype; mng_put_int32 (pTemp+5, pSource->iOffsetx); mng_put_int32 (pTemp+9, pSource->iOffsety); *(pTemp+13) = pSource->iBoundarytype; mng_put_int32 (pTemp+14, pSource->iBoundaryl); mng_put_int32 (pTemp+18, pSource->iBoundaryr); mng_put_int32 (pTemp+22, pSource->iBoundaryt); mng_put_int32 (pTemp+26, pSource->iBoundaryb); pSource++; pTemp += 30; } /* and write it */ iRetcode = write_raw_chunk (pData, pPAST->sHeader.iChunkname, iRawlen, pRawdata); /* free temporary buffer ? */ if (iRawlen > pData->iWritebufsize) MNG_FREEX (pData, pRawdata, iRawlen) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PAST, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_disc) { mng_discp pDISC; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint32 iX; mng_uint8p pTemp1; mng_uint16p pTemp2; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DISC, MNG_LC_START) #endif pDISC = (mng_discp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pDISC->iCount << 1; pTemp1 = pRawdata; /* fill the output buffer */ pTemp2 = pDISC->pObjectids; for (iX = 0; iX < pDISC->iCount; iX++) { mng_put_uint16 (pTemp1, *pTemp2); pTemp2++; pTemp1 += 2; } /* and write it */ iRetcode = write_raw_chunk (pData, pDISC->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DISC, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_back) { mng_backp pBACK; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BACK, MNG_LC_START) #endif pBACK = (mng_backp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 6; /* fill the output buffer */ mng_put_uint16 (pRawdata, pBACK->iRed); mng_put_uint16 (pRawdata+2, pBACK->iGreen); mng_put_uint16 (pRawdata+4, pBACK->iBlue); if ((pBACK->iMandatory) || (pBACK->iImageid) || (pBACK->iTile)) { iRawlen++; *(pRawdata+6) = pBACK->iMandatory; if ((pBACK->iImageid) || (pBACK->iTile)) { iRawlen += 2; mng_put_uint16 (pRawdata+7, pBACK->iImageid); if (pBACK->iTile) { iRawlen++; *(pRawdata+9) = pBACK->iTile; } } } /* and write it */ iRetcode = write_raw_chunk (pData, pBACK->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_BACK, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_fram) { mng_framp pFRAM; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_uint32p pTemp2; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_FRAM, MNG_LC_START) #endif pFRAM = (mng_framp)pChunk; /* address the proper chunk */ if (pFRAM->bEmpty) /* empty ? */ iRetcode = write_raw_chunk (pData, pFRAM->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; /* fill the output buffer */ *pRawdata = pFRAM->iMode; if ((pFRAM->iNamesize ) || (pFRAM->iChangedelay ) || (pFRAM->iChangetimeout) || (pFRAM->iChangeclipping) || (pFRAM->iChangesyncid ) ) { if (pFRAM->iNamesize) MNG_COPY (pRawdata+1, pFRAM->zName, pFRAM->iNamesize) iRawlen += pFRAM->iNamesize; pTemp = pRawdata + pFRAM->iNamesize + 1; if ((pFRAM->iChangedelay ) || (pFRAM->iChangetimeout) || (pFRAM->iChangeclipping) || (pFRAM->iChangesyncid ) ) { *pTemp = 0; *(pTemp+1) = pFRAM->iChangedelay; *(pTemp+2) = pFRAM->iChangetimeout; *(pTemp+3) = pFRAM->iChangeclipping; *(pTemp+4) = pFRAM->iChangesyncid; iRawlen += 5; pTemp += 5; if (pFRAM->iChangedelay) { mng_put_uint32 (pTemp, pFRAM->iDelay); iRawlen += 4; pTemp += 4; } if (pFRAM->iChangetimeout) { mng_put_uint32 (pTemp, pFRAM->iTimeout); iRawlen += 4; pTemp += 4; } if (pFRAM->iChangeclipping) { *pTemp = pFRAM->iBoundarytype; mng_put_uint32 (pTemp+1, pFRAM->iBoundaryl); mng_put_uint32 (pTemp+5, pFRAM->iBoundaryr); mng_put_uint32 (pTemp+9, pFRAM->iBoundaryt); mng_put_uint32 (pTemp+13, pFRAM->iBoundaryb); iRawlen += 17; pTemp += 17; } if (pFRAM->iChangesyncid) { iRawlen += pFRAM->iCount * 4; pTemp2 = pFRAM->pSyncids; for (iX = 0; iX < pFRAM->iCount; iX++) { mng_put_uint32 (pTemp, *pTemp2); pTemp2++; pTemp += 4; } } } } /* and write it */ iRetcode = write_raw_chunk (pData, pFRAM->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_FRAM, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_move) { mng_movep pMOVE; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MOVE, MNG_LC_START) #endif pMOVE = (mng_movep)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 13; /* fill the output buffer */ mng_put_uint16 (pRawdata, pMOVE->iFirstid); mng_put_uint16 (pRawdata+2, pMOVE->iLastid); *(pRawdata+4) = pMOVE->iMovetype; mng_put_int32 (pRawdata+5, pMOVE->iMovex); mng_put_int32 (pRawdata+9, pMOVE->iMovey); /* and write it */ iRetcode = write_raw_chunk (pData, pMOVE->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MOVE, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_clip) { mng_clipp pCLIP; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CLIP, MNG_LC_START) #endif pCLIP = (mng_clipp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 21; /* fill the output buffer */ mng_put_uint16 (pRawdata, pCLIP->iFirstid); mng_put_uint16 (pRawdata+2, pCLIP->iLastid); *(pRawdata+4) = pCLIP->iCliptype; mng_put_int32 (pRawdata+5, pCLIP->iClipl); mng_put_int32 (pRawdata+9, pCLIP->iClipr); mng_put_int32 (pRawdata+13, pCLIP->iClipt); mng_put_int32 (pRawdata+17, pCLIP->iClipb); /* and write it */ iRetcode = write_raw_chunk (pData, pCLIP->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_CLIP, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_show) { mng_showp pSHOW; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SHOW, MNG_LC_START) #endif pSHOW = (mng_showp)pChunk; /* address the proper chunk */ if (pSHOW->bEmpty) /* empty ? */ iRetcode = write_raw_chunk (pData, pSHOW->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 2; /* fill the output buffer */ mng_put_uint16 (pRawdata, pSHOW->iFirstid); if ((pSHOW->iLastid != pSHOW->iFirstid) || (pSHOW->iMode)) { iRawlen += 2; mng_put_uint16 (pRawdata+2, pSHOW->iLastid); if (pSHOW->iMode) { iRawlen++; *(pRawdata+4) = pSHOW->iMode; } } /* and write it */ iRetcode = write_raw_chunk (pData, pSHOW->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SHOW, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_term) { mng_termp pTERM; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TERM, MNG_LC_START) #endif pTERM = (mng_termp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; *pRawdata = pTERM->iTermaction; /* fill the output buffer */ if (pTERM->iTermaction == 3) { iRawlen = 10; *(pRawdata+1) = pTERM->iIteraction; mng_put_uint32 (pRawdata+2, pTERM->iDelay); mng_put_uint32 (pRawdata+6, pTERM->iItermax); } /* and write it */ iRetcode = write_raw_chunk (pData, pTERM->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_TERM, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_save) { mng_savep pSAVE; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_save_entryp pEntry; mng_uint32 iEntrysize; mng_uint8p pTemp; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SAVE, MNG_LC_START) #endif pSAVE = (mng_savep)pChunk; /* address the proper chunk */ if (pSAVE->bEmpty) /* empty ? */ iRetcode = write_raw_chunk (pData, pSAVE->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; *pRawdata = pSAVE->iOffsettype; /* fill the output buffer */ if (pSAVE->iOffsettype == 16) iEntrysize = 25; else iEntrysize = 17; pTemp = pRawdata+1; pEntry = pSAVE->pEntries; for (iX = 0; iX < pSAVE->iCount; iX++) { if (iX) /* put separator null-byte, except the first */ { *pTemp = 0; pTemp++; iRawlen++; } iRawlen += iEntrysize + pEntry->iNamesize; *pTemp = pEntry->iEntrytype; if (pSAVE->iOffsettype == 16) { mng_put_uint32 (pTemp+1, pEntry->iOffset[0]); mng_put_uint32 (pTemp+5, pEntry->iOffset[1]); mng_put_uint32 (pTemp+9, pEntry->iStarttime[0]); mng_put_uint32 (pTemp+13, pEntry->iStarttime[1]); mng_put_uint32 (pTemp+17, pEntry->iLayernr); mng_put_uint32 (pTemp+21, pEntry->iFramenr); pTemp += 25; } else { mng_put_uint32 (pTemp+1, pEntry->iOffset[1]); mng_put_uint32 (pTemp+5, pEntry->iStarttime[1]); mng_put_uint32 (pTemp+9, pEntry->iLayernr); mng_put_uint32 (pTemp+13, pEntry->iFramenr); pTemp += 17; } if (pEntry->iNamesize) { MNG_COPY (pTemp, pEntry->zName, pEntry->iNamesize); pTemp += pEntry->iNamesize; } pEntry++; } /* and write it */ iRetcode = write_raw_chunk (pData, pSAVE->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SAVE, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_seek) { mng_seekp pSEEK; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SEEK, MNG_LC_START) #endif pSEEK = (mng_seekp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pSEEK->iNamesize; if (iRawlen) /* fill the output buffer */ MNG_COPY (pRawdata, pSEEK->zName, iRawlen) /* and write it */ iRetcode = write_raw_chunk (pData, pSEEK->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_SEEK, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_expi) { mng_expip pEXPI; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_EXPI, MNG_LC_START) #endif pEXPI = (mng_expip)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 2 + pEXPI->iNamesize; /* fill the output buffer */ mng_put_uint16 (pRawdata, pEXPI->iSnapshotid); if (pEXPI->iNamesize) MNG_COPY (pRawdata+2, pEXPI->zName, pEXPI->iNamesize) /* and write it */ iRetcode = write_raw_chunk (pData, pEXPI->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_EXPI, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_fpri) { mng_fprip pFPRI; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_FPRI, MNG_LC_START) #endif pFPRI = (mng_fprip)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 2; *pRawdata = pFPRI->iDeltatype; /* fill the output buffer */ *(pRawdata+1) = pFPRI->iPriority; /* and write it */ iRetcode = write_raw_chunk (pData, pFPRI->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_FPRI, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_need) { mng_needp pNEED; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_NEED, MNG_LC_START) #endif pNEED = (mng_needp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pNEED->iKeywordssize; /* fill the output buffer */ if (pNEED->iKeywordssize) MNG_COPY (pRawdata, pNEED->zKeywords, pNEED->iKeywordssize) /* and write it */ iRetcode = write_raw_chunk (pData, pNEED->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_NEED, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_phyg) { mng_phygp pPHYG; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PHYG, MNG_LC_START) #endif pPHYG = (mng_phygp)pChunk; /* address the proper chunk */ if (pPHYG->bEmpty) /* write empty ? */ iRetcode = write_raw_chunk (pData, pPHYG->sHeader.iChunkname, 0, 0); else { pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 9; /* fill the output buffer */ mng_put_uint32 (pRawdata, pPHYG->iSizex); mng_put_uint32 (pRawdata+4, pPHYG->iSizey); *(pRawdata+8) = pPHYG->iUnit; /* and write it */ iRetcode = write_raw_chunk (pData, pPHYG->sHeader.iChunkname, iRawlen, pRawdata); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PHYG, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ /* B004 */ #ifdef MNG_INCLUDE_JNG /* B004 */ WRITE_CHUNK (write_jhdr) { mng_jhdrp pJHDR; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JHDR, MNG_LC_START) #endif pJHDR = (mng_jhdrp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 16; /* fill the output buffer */ mng_put_uint32 (pRawdata, pJHDR->iWidth); mng_put_uint32 (pRawdata+4, pJHDR->iHeight); *(pRawdata+8) = pJHDR->iColortype; *(pRawdata+9) = pJHDR->iImagesampledepth; *(pRawdata+10) = pJHDR->iImagecompression; *(pRawdata+11) = pJHDR->iImageinterlace; *(pRawdata+12) = pJHDR->iAlphasampledepth; *(pRawdata+13) = pJHDR->iAlphacompression; *(pRawdata+14) = pJHDR->iAlphafilter; *(pRawdata+15) = pJHDR->iAlphainterlace; /* and write it */ iRetcode = write_raw_chunk (pData, pJHDR->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JHDR, MNG_LC_END) #endif return iRetcode; } #else #define write_jhdr 0 /* B004 */ #endif /* MNG_INCLUDE_JNG */ /* B004 */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG WRITE_CHUNK (write_jdaa) { mng_jdatp pJDAA; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JDAA, MNG_LC_START) #endif pJDAA = (mng_jdaap)pChunk; /* address the proper chunk */ if (pJDAA->bEmpty) /* and write it */ iRetcode = write_raw_chunk (pData, pJDAA->sHeader.iChunkname, 0, 0); else iRetcode = write_raw_chunk (pData, pJDAA->sHeader.iChunkname, pJDAA->iDatasize, pJDAA->pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JDAA, MNG_LC_END) #endif return iRetcode; } #else #define write_jdaa 0 #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ /* B004 */ #ifdef MNG_INCLUDE_JNG /* B004 */ WRITE_CHUNK (write_jdat) { mng_jdatp pJDAT; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JDAT, MNG_LC_START) #endif pJDAT = (mng_jdatp)pChunk; /* address the proper chunk */ if (pJDAT->bEmpty) /* and write it */ iRetcode = write_raw_chunk (pData, pJDAT->sHeader.iChunkname, 0, 0); else iRetcode = write_raw_chunk (pData, pJDAT->sHeader.iChunkname, pJDAT->iDatasize, pJDAT->pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JDAT, MNG_LC_END) #endif return iRetcode; } #else #define write_jdat 0 /* B004 */ #endif /* MNG_INCLUDE_JNG */ /* B004 */ /* ************************************************************************** */ /* B004 */ #ifdef MNG_INCLUDE_JNG /* B004 */ WRITE_CHUNK (write_jsep) { mng_jsepp pJSEP; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JSEP, MNG_LC_START) #endif pJSEP = (mng_jsepp)pChunk; /* address the proper chunk */ /* and write it */ iRetcode = write_raw_chunk (pData, pJSEP->sHeader.iChunkname, 0, 0); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_JSEP, MNG_LC_END) #endif return iRetcode; } #else #define write_jsep 0 /* B004 */ #endif /* MNG_INCLUDE_JNG */ /* B004 */ /* ************************************************************************** */ WRITE_CHUNK (write_dhdr) { mng_dhdrp pDHDR; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DHDR, MNG_LC_START) #endif pDHDR = (mng_dhdrp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 4; /* fill the output buffer */ mng_put_uint16 (pRawdata, pDHDR->iObjectid); *(pRawdata+2) = pDHDR->iImagetype; *(pRawdata+3) = pDHDR->iDeltatype; if (pDHDR->iDeltatype != 7) { iRawlen += 8; mng_put_uint32 (pRawdata+4, pDHDR->iBlockwidth); mng_put_uint32 (pRawdata+8, pDHDR->iBlockheight); if (pDHDR->iDeltatype != 0) { iRawlen += 8; mng_put_uint32 (pRawdata+12, pDHDR->iBlockx); mng_put_uint32 (pRawdata+16, pDHDR->iBlocky); } } /* and write it */ iRetcode = write_raw_chunk (pData, pDHDR->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DHDR, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_prom) { mng_promp pPROM; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PROM, MNG_LC_START) #endif pPROM = (mng_promp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 3; *pRawdata = pPROM->iColortype; /* fill the output buffer */ *(pRawdata+1) = pPROM->iSampledepth; *(pRawdata+2) = pPROM->iFilltype; /* and write it */ iRetcode = write_raw_chunk (pData, pPROM->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PROM, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_ipng) { mng_ipngp pIPNG; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IPNG, MNG_LC_START) #endif pIPNG = (mng_ipngp)pChunk; /* address the proper chunk */ /* and write it */ iRetcode = write_raw_chunk (pData, pIPNG->sHeader.iChunkname, 0, 0); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IPNG, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_pplt) { mng_ppltp pPPLT; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_pplt_entryp pEntry; mng_uint8p pTemp; mng_uint32 iX; mng_bool bHasgroup; mng_uint8p pLastid = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PPLT, MNG_LC_START) #endif pPPLT = (mng_ppltp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 1; *pRawdata = pPPLT->iDeltatype; /* fill the output buffer */ pTemp = pRawdata+1; bHasgroup = MNG_FALSE; for (iX = 0; iX < pPPLT->iCount; iX++) { pEntry = &pPPLT->aEntries[iX]; if (pEntry->bUsed) /* valid entry ? */ { if (!bHasgroup) /* start a new group ? */ { bHasgroup = MNG_TRUE; pLastid = pTemp+1; *pTemp = (mng_uint8)iX; *(pTemp+1) = 0; pTemp += 2; } switch (pPPLT->iDeltatype) /* add group-entry depending on type */ { case 0: ; case 1: { *pTemp = pEntry->iRed; *(pTemp+1) = pEntry->iGreen; *(pTemp+2) = pEntry->iBlue; pTemp += 3; break; } case 2: ; case 3: { *pTemp = pEntry->iAlpha; pTemp++; break; } case 4: ; case 5: { *pTemp = pEntry->iRed; *(pTemp+1) = pEntry->iGreen; *(pTemp+2) = pEntry->iBlue; *(pTemp+3) = pEntry->iAlpha; pTemp += 4; break; } } } else { if (bHasgroup) /* finish off a group ? */ *pLastid = (mng_uint8)(iX-1); bHasgroup = MNG_FALSE; } } if (bHasgroup) /* last group unfinished ? */ *pLastid = (mng_uint8)(pPPLT->iCount-1); /* write the output buffer */ iRetcode = write_raw_chunk (pData, pPPLT->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_PPLT, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_ijng) { mng_ijngp pIJNG; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IJNG, MNG_LC_START) #endif pIJNG = (mng_ijngp)pChunk; /* address the proper chunk */ /* and write it */ iRetcode = write_raw_chunk (pData, pIJNG->sHeader.iChunkname, 0, 0); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_IJNG, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_drop) { mng_dropp pDROP; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint32 iX; mng_uint8p pTemp1; mng_chunkidp pTemp2; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DROP, MNG_LC_START) #endif pDROP = (mng_dropp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pDROP->iCount << 2; pTemp1 = pRawdata; /* fill the output buffer */ pTemp2 = pDROP->pChunknames; for (iX = 0; iX < pDROP->iCount; iX++) { mng_put_uint32 (pTemp1, (mng_uint32)*pTemp2); pTemp2++; pTemp1 += 4; } /* and write it */ iRetcode = write_raw_chunk (pData, pDROP->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DROP, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_dbyk) { mng_dbykp pDBYK; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DBYK, MNG_LC_START) #endif pDBYK = (mng_dbykp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 5 + pDBYK->iKeywordssize; /* fill the output buffer */ mng_put_uint32 (pRawdata, pDBYK->iChunkname); *(pRawdata+4) = pDBYK->iPolarity; if (pDBYK->iKeywordssize) MNG_COPY (pRawdata+5, pDBYK->zKeywords, pDBYK->iKeywordssize) /* and write it */ iRetcode = write_raw_chunk (pData, pDBYK->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_DBYK, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_ordr) { mng_ordrp pORDR; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; mng_uint8p pTemp; mng_ordr_entryp pEntry; mng_uint32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ORDR, MNG_LC_START) #endif pORDR = (mng_ordrp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = pORDR->iCount * 5; pTemp = pRawdata; /* fill the output buffer */ pEntry = pORDR->pEntries; for (iX = 0; iX < pORDR->iCount; iX++) { mng_put_uint32 (pTemp, pEntry->iChunkname); *(pTemp+4) = pEntry->iOrdertype; pTemp += 5; pEntry++; } /* and write it */ iRetcode = write_raw_chunk (pData, pORDR->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_ORDR, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_magn) { mng_magnp pMAGN; mng_uint8p pRawdata; mng_uint32 iRawlen; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MAGN, MNG_LC_START) #endif pMAGN = (mng_magnp)pChunk; /* address the proper chunk */ pRawdata = pData->pWritebuf+8; /* init output buffer & size */ iRawlen = 20; /* fill the output buffer */ mng_put_uint16 (pRawdata, pMAGN->iFirstid); mng_put_uint16 (pRawdata+2, pMAGN->iLastid); mng_put_uint16 (pRawdata+4, pMAGN->iMethodX); mng_put_uint16 (pRawdata+6, pMAGN->iMX); mng_put_uint16 (pRawdata+8, pMAGN->iMY); mng_put_uint16 (pRawdata+10, pMAGN->iML); mng_put_uint16 (pRawdata+12, pMAGN->iMR); mng_put_uint16 (pRawdata+14, pMAGN->iMT); mng_put_uint16 (pRawdata+16, pMAGN->iMB); mng_put_uint16 (pRawdata+18, pMAGN->iMethodY); /* optimize length */ if (pMAGN->iMethodY == pMAGN->iMethodX) { iRawlen -= 2; if (pMAGN->iMB == pMAGN->iMY) { iRawlen -= 2; if (pMAGN->iMT == pMAGN->iMY) { iRawlen -= 2; if (pMAGN->iMR == pMAGN->iMX) { iRawlen -= 2; if (pMAGN->iML == pMAGN->iMX) { iRawlen -= 2; if (pMAGN->iMY == pMAGN->iMX) { iRawlen -= 2; if (pMAGN->iMX == 1) { iRawlen -= 2; if (pMAGN->iMethodX == 0) { iRawlen -= 2; if (pMAGN->iLastid == pMAGN->iFirstid) { iRawlen -= 2; if (pMAGN->iFirstid == 0) iRawlen = 0; } } } } } } } } } /* and write it */ iRetcode = write_raw_chunk (pData, pMAGN->sHeader.iChunkname, iRawlen, pRawdata); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_MAGN, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ WRITE_CHUNK (write_unknown) { mng_unknown_chunkp pUnknown; mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_UNKNOWN, MNG_LC_START) #endif /* address the proper chunk */ pUnknown = (mng_unknown_chunkp)pChunk; /* and write it */ iRetcode = write_raw_chunk (pData, pUnknown->sHeader.iChunkname, pUnknown->iDatasize, pUnknown->pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_WRITE_UNKNOWN, MNG_LC_END) #endif return iRetcode; } /* ************************************************************************** */ #endif /* MNG_INCLUDE_WRITE_PROCS */ /* ************************************************************************** */ /* * end of file * */ /* ************************************************************************** */