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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date : 2005-06-17
+ * Description : A TIFF IO file for DImg framework
+ *
+ * Copyright (C) 2005 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
+ * Copyright (C) 2006-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ *
+ * Specifications & references:
+ * - TIFF 6.0 : http://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf
+ * - TIFF/EP : http://www.map.tu.chiba-u.ac.jp/IEC/100/TA2/recdoc/N4378.pdf
+ * - TIFF/Tags : http://www.awaresystems.be/imaging/tiff/tifftags.html
+ * - DNG : http://www.adobe.com/products/dng/pdfs/dng_spec.pdf
+ *
+ * Others Linux Tiff Loader implementation using libtiff:
+ * - http://websvn.kde.org/trunk/koffice/filters/krita/tiff/kis_tiff_converter.cc
+ * - http://artis.inrialpes.fr/Software/TiffIO/
+ * - http://cvs.graphicsmagick.org/cgi-bin/cvsweb.cgi/GraphicsMagick/coders/tiff.c
+ * - http://freeimage.cvs.sourceforge.net/freeimage/FreeImage/Source/FreeImage/PluginTIFF.cpp
+ * - http://freeimage.cvs.sourceforge.net/freeimage/FreeImage/Source/Metadata/XTIFF.cpp
+ * - https://subversion.imagemagick.org/subversion/ImageMagick/trunk/coders/tiff.c
+ *
+ * Test images repository:
+ * - http://www.remotesensing.org/libtiff/images.html
+ *
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * ============================================================ */
+
+// This line must be commented to prevent any latency time
+// when we use threaded image loader interface for each image
+// files io. Uncomment this line only for debugging.
+//#define ENABLE_DEBUG_MESSAGES
+
+// C ANSI includes.
+
+extern "C"
+{
+#include <tiffvers.h>
+}
+
+// C++ includes.
+
+#include <cstdio>
+
+// TQt includes.
+
+#include <tqfile.h>
+
+// Local includes.
+
+#include "ddebug.h"
+#include "dimg.h"
+#include "dimgloaderobserver.h"
+#include "dmetadata.h"
+#include "tiffloader.h"
+
+namespace Digikam
+{
+
+// To manage Errors/Warnings handling provide by libtiff
+
+void TIFFLoader::dimg_tiff_warning(const char* module, const char* format, va_list warnings)
+{
+#ifdef ENABLE_DEBUG_MESSAGES
+ char message[4096];
+ vsnprintf(message, 4096, format, warnings);
+ DDebug() << module << "::" << message << endl;
+#else
+ Q_UNUSED(module);
+ Q_UNUSED(format);
+ Q_UNUSED(warnings);
+#endif
+}
+
+void TIFFLoader::dimg_tiff_error(const char* module, const char* format, va_list errors)
+{
+#ifdef ENABLE_DEBUG_MESSAGES
+ char message[4096];
+ vsnprintf(message, 4096, format, errors);
+ DDebug() << module << "::" << message << endl;
+#else
+ Q_UNUSED(module);
+ Q_UNUSED(format);
+ Q_UNUSED(errors);
+#endif
+}
+
+TIFFLoader::TIFFLoader(DImg* image)
+ : DImgLoader(image)
+{
+ m_hasAlpha = false;
+ m_sixteenBit = false;
+}
+
+bool TIFFLoader::load(const TQString& filePath, DImgLoaderObserver *observer)
+{
+ readMetadata(filePath, DImg::TIFF);
+
+ // -------------------------------------------------------------------
+ // TIFF error handling. If an errors/warnings occurs during reading,
+ // libtiff will call these methods
+
+ TIFFSetWarningHandler(dimg_tiff_warning);
+ TIFFSetErrorHandler(dimg_tiff_error);
+
+ // -------------------------------------------------------------------
+ // Open the file
+
+ TIFF* tif = TIFFOpen(TQFile::encodeName(filePath), "r");
+ if (!tif)
+ {
+ DDebug() << k_funcinfo << "Cannot open image file." << endl;
+ return false;
+ }
+
+#ifdef ENABLE_DEBUG_MESSAGES
+ TIFFPrintDirectory(tif, stdout, 0);
+#endif
+
+ // -------------------------------------------------------------------
+ // Get image information.
+
+ uint32 w, h;
+ uint16 bits_per_sample;
+ uint16 samples_per_pixel;
+ uint16 photometric;
+ uint32 rows_per_strip;
+ tsize_t strip_size;
+ tstrip_t num_of_strips;
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_IMAGEWIDTH, &w);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_IMAGELENGTH, &h);
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &bits_per_sample);
+ TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &samples_per_pixel);
+
+ if (TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rows_per_strip) == 0 ||
+ rows_per_strip == 0 || rows_per_strip == (unsigned int)-1)
+ {
+ DWarning() << "TIFF loader: Cannot handle non-stripped images. Loading file " << filePath << endl;
+ TIFFClose(tif);
+ return false;
+ }
+
+ if (bits_per_sample == 0 || samples_per_pixel == 0 ||
+ rows_per_strip == 0 || rows_per_strip > h)
+ {
+ DWarning() << "TIFF loader: Encountered invalid value 0 in image."
+ << " bits_per_sample " << bits_per_sample
+ << " samples_per_pixel " << samples_per_pixel
+ << " rows_per_strip " << rows_per_strip
+ << " Loading file " << filePath << endl;
+ TIFFClose(tif);
+ return false;
+ }
+
+ // TODO: check others TIFF color-spaces here. Actually, only RGB and MINISBLACK
+ // have been tested.
+ // Complete description of TIFFTAG_PHOTOMETRIC tag can be found at this url:
+ // http://www.awaresystems.be/imaging/tiff/tifftags/photometricinterpretation.html
+
+ TIFFGetFieldDefaulted(tif, TIFFTAG_PHOTOMETRIC, &photometric);
+ if (photometric != PHOTOMETRIC_RGB &&
+ photometric != PHOTOMETRIC_MINISBLACK)
+ {
+ DWarning() << "Can't handle image without RGB color-space: "
+ << photometric << endl;
+ TIFFClose(tif);
+ return false;
+ }
+
+ if (samples_per_pixel == 4)
+ m_hasAlpha = true;
+ else
+ m_hasAlpha = false;
+
+ if (bits_per_sample == 16)
+ m_sixteenBit = true;
+ else
+ m_sixteenBit = false;
+
+ // -------------------------------------------------------------------
+ // Read image ICC profile
+
+ TQMap<int, TQByteArray>& metaData = imageMetaData();
+
+ uchar *profile_data=0;
+ uint32 profile_size;
+
+ if (TIFFGetField (tif, TIFFTAG_ICCPROFILE, &profile_size, &profile_data))
+ {
+ TQByteArray profile_rawdata(profile_size);
+ memcpy(profile_rawdata.data(), profile_data, profile_size);
+ metaData.insert(DImg::ICC, profile_rawdata);
+ }
+ else
+ {
+ // If ICC profile is null, check Exif metadata.
+ checkExifWorkingColorSpace();
+ }
+
+ // -------------------------------------------------------------------
+ // Get image data.
+
+ if (observer)
+ observer->progressInfo(m_image, 0.1);
+
+ uchar* data = 0;
+
+ strip_size = TIFFStripSize(tif);
+ num_of_strips = TIFFNumberOfStrips(tif);
+
+ if (bits_per_sample == 16) // 16 bits image.
+ {
+ data = new uchar[w*h*8];
+ uchar* strip = new uchar[strip_size];
+ long offset = 0;
+ long bytesRead = 0;
+
+ uint checkpoint = 0;
+
+ for (tstrip_t st=0; st < num_of_strips; st++)
+ {
+ if (observer && st == checkpoint)
+ {
+ checkpoint += granularity(observer, num_of_strips, 0.8);
+ if (!observer->continueQuery(m_image))
+ {
+ delete [] data;
+ delete [] strip;
+ TIFFClose(tif);
+ return false;
+ }
+ observer->progressInfo(m_image, 0.1 + (0.8 * ( ((float)st)/((float)num_of_strips) )));
+ }
+
+ bytesRead = TIFFReadEncodedStrip(tif, st, strip, strip_size);
+
+ if (bytesRead == -1)
+ {
+ DDebug() << k_funcinfo << "Failed to read strip" << endl;
+ delete [] data;
+ TIFFClose(tif);
+ return false;
+ }
+
+ ushort *stripPtr = (ushort*)(strip);
+ ushort *dataPtr = (ushort*)(data + offset);
+ ushort *p;
+
+ // tiff data is read as BGR or ABGR or Greyscale
+
+ if (samples_per_pixel == 3)
+ {
+ for (int i=0; i < bytesRead/6; i++)
+ {
+ p = dataPtr;
+
+ // See B.K.O #148037 : take a care about byte order with Motorola computers.
+ if (TQImage::systemByteOrder() == TQImage::BigEndian) // PPC
+ {
+ p[3] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[2] = 0xFFFF;
+ }
+ else
+ {
+ p[2] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[3] = 0xFFFF;
+ }
+
+ dataPtr += 4;
+ }
+
+ offset += bytesRead/6 * 8;
+ }
+ else if (samples_per_pixel == 1) // See B.K.O #148400: Greyscale pictures only have _one_ sample per pixel
+ {
+ for (int i=0; i < bytesRead/2; i++)
+ {
+ // We have to read two bytes for one pixel
+ p = dataPtr;
+
+ // See B.K.O #148037 : take a care about byte order with Motorola computers.
+ if (TQImage::systemByteOrder() == TQImage::BigEndian) // PPC
+ {
+ p[3] = 0xFFFF;
+ p[0] = *stripPtr;
+ p[1] = *stripPtr;
+ p[2] = *stripPtr++;
+ }
+ else
+ {
+ p[0] = *stripPtr; // RGB have to be set to the _same_ value
+ p[1] = *stripPtr;
+ p[2] = *stripPtr++;
+ p[3] = 0xFFFF; // set alpha to 100%
+ }
+ dataPtr += 4;
+ }
+
+ offset += bytesRead*4; // The _byte_offset in the data array is, of course, four times bytesRead
+ }
+ else // ABGR
+ {
+ for (int i=0; i < bytesRead/8; i++)
+ {
+ p = dataPtr;
+
+ // See B.K.O #148037 : take a care about byte order with Motorola computers.
+ if (TQImage::systemByteOrder() == TQImage::BigEndian) // PPC
+ {
+ p[3] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[2] = *stripPtr++;
+ }
+ else
+ {
+ p[2] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[3] = *stripPtr++;
+ }
+
+ dataPtr += 4;
+ }
+
+ offset += bytesRead;
+ }
+ }
+
+ delete [] strip;
+ }
+ else // Non 16 bits images ==> get it on BGRA 8 bits.
+ {
+ data = new uchar[w*h*4];
+ uchar* strip = new uchar[w*rows_per_strip*4];
+ long offset = 0;
+ long pixelsRead = 0;
+
+ // this is inspired by TIFFReadRGBAStrip, tif_getimage.c
+ char emsg[1024] = "";
+ TIFFRGBAImage img;
+ uint32 rows_to_read;
+
+ uint checkpoint = 0;
+
+ // test whether libtiff can read format and initiate reading
+
+ if (!TIFFRGBAImageOK(tif, emsg) || !TIFFRGBAImageBegin(&img, tif, 0, emsg))
+ {
+ DDebug() << k_funcinfo << "Failed to set up RGBA reading of image, filename "
+ << TIFFFileName(tif) << " error message from Libtiff: " << emsg << endl;
+ delete [] data;
+ delete [] strip;
+ TIFFClose(tif);
+ return false;
+ }
+
+ img.req_orientation = ORIENTATION_TOPLEFT;
+
+ // read strips from image: read rows_per_strip, so always start at beginning of a strip
+ for (uint row = 0; row < h; row += rows_per_strip)
+ {
+ if (observer && row >= checkpoint)
+ {
+ checkpoint += granularity(observer, h, 0.8);
+ if (!observer->continueQuery(m_image))
+ {
+ delete [] data;
+ delete [] strip;
+ TIFFClose(tif);
+ return false;
+ }
+ observer->progressInfo(m_image, 0.1 + (0.8 * ( ((float)row)/((float)h) )));
+ }
+
+ img.row_offset = row;
+ img.col_offset = 0;
+
+ if( row + rows_per_strip > img.height )
+ rows_to_read = img.height - row;
+ else
+ rows_to_read = rows_per_strip;
+
+ // Read data
+
+ if (TIFFRGBAImageGet(&img, (uint32*)strip, img.width, rows_to_read ) == -1)
+ {
+ DDebug() << k_funcinfo << "Failed to read image data" << endl;
+ delete [] data;
+ delete [] strip;
+ TIFFClose(tif);
+ return false;
+ }
+
+ pixelsRead = rows_to_read * img.width;
+
+ uchar *stripPtr = (uchar*)(strip);
+ uchar *dataPtr = (uchar*)(data + offset);
+ uchar *p;
+
+ // Reverse red and blue
+
+ for (int i=0; i < pixelsRead; i++)
+ {
+ p = dataPtr;
+
+ // See B.K.O #148037 : take a care about byte order with Motorola computers.
+ if (TQImage::systemByteOrder() == TQImage::BigEndian) // PPC
+ {
+ p[3] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[2] = *stripPtr++;
+ }
+ else
+ {
+ p[2] = *stripPtr++;
+ p[1] = *stripPtr++;
+ p[0] = *stripPtr++;
+ p[3] = *stripPtr++;
+ }
+
+ dataPtr += 4;
+ }
+
+ offset += pixelsRead * 4;
+ }
+
+ TIFFRGBAImageEnd(&img);
+ delete [] strip;
+ }
+
+ // -------------------------------------------------------------------
+
+ TIFFClose(tif);
+
+ if (observer)
+ observer->progressInfo(m_image, 1.0);
+
+ imageWidth() = w;
+ imageHeight() = h;
+ imageData() = data;
+ imageSetAttribute("format", "TIFF");
+
+ return true;
+}
+
+bool TIFFLoader::save(const TQString& filePath, DImgLoaderObserver *observer)
+{
+ TIFF *tif;
+ uchar *data;
+ uint32 w, h;
+
+ w = imageWidth();
+ h = imageHeight();
+ data = imageData();
+
+ // -------------------------------------------------------------------
+ // TIFF error handling. If an errors/warnings occurs during reading,
+ // libtiff will call these methods
+
+ TIFFSetWarningHandler(dimg_tiff_warning);
+ TIFFSetErrorHandler(dimg_tiff_error);
+
+ // -------------------------------------------------------------------
+ // Open the file
+
+ tif = TIFFOpen(TQFile::encodeName(filePath), "w");
+
+ if (!tif)
+ {
+ DDebug() << k_funcinfo << "Cannot open target image file." << endl;
+ return false;
+ }
+
+ // -------------------------------------------------------------------
+ // Set image properties
+
+ TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, w);
+ TIFFSetField(tif, TIFFTAG_IMAGELENGTH, h);
+ TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
+ TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+ TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+ TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);
+
+ // Image must be compressed using deflate algorithm ?
+ TQVariant compressAttr = imageGetAttribute("compress");
+ bool compress = compressAttr.isValid() ? compressAttr.toBool() : false;
+
+ if (compress)
+ {
+ TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_ADOBE_DEFLATE);
+ TIFFSetField(tif, TIFFTAG_ZIPQUALITY, 9);
+ // NOTE : this tag values aren't defined in libtiff 3.6.1. '2' is PREDICTOR_HORIZONTAL.
+ // Use horizontal differencing for images which are
+ // likely to be continuous tone. The TIFF spec says that this
+ // usually leads to better compression.
+ // See this url for more details:
+ // http://www.awaresystems.be/imaging/tiff/tifftags/predictor.html
+ TIFFSetField(tif, TIFFTAG_PREDICTOR, 2);
+ }
+ else
+ TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+
+ // Image has an alpha channel ?
+ if (imageHasAlpha())
+ {
+ uint16 sampleinfo[1] = { EXTRASAMPLE_UNASSALPHA };
+ TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 4);
+ TIFFSetField(tif, TIFFTAG_EXTRASAMPLES, EXTRASAMPLE_ASSOCALPHA, sampleinfo);
+ }
+ else
+ {
+ TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
+ }
+
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, (uint16)imageBitsDepth());
+ TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, TIFFDefaultStripSize(tif, 0));
+
+ // -------------------------------------------------------------------
+ // Write meta-data Tags contents.
+
+ DMetadata metaData;
+ metaData.setExif(m_image->getExif());
+ metaData.setIptc(m_image->getIptc());
+
+ // Standard IPTC tag (available with libtiff 3.6.1)
+
+ TQByteArray ba = metaData.getIptc(true);
+ if (!ba.isEmpty())
+ {
+#if defined(TIFFTAG_PHOTOSHOP)
+ TIFFSetField (tif, TIFFTAG_PHOTOSHOP, (uint32)ba.size(), (uchar *)ba.data());
+#endif
+ }
+
+ // Standard XMP tag (available with libtiff 3.6.1)
+
+#if defined(TIFFTAG_XMLPACKET)
+ tiffSetExifDataTag(tif, TIFFTAG_XMLPACKET, &metaData, "Exif.Image.XMLPacket");
+#endif
+
+ // Standard Exif Ascii tags (available with libtiff 3.6.1)
+
+ tiffSetExifAsciiTag(tif, TIFFTAG_DOCUMENTNAME, &metaData, "Exif.Image.DocumentName");
+ tiffSetExifAsciiTag(tif, TIFFTAG_IMAGEDESCRIPTION, &metaData, "Exif.Image.ImageDescription");
+ tiffSetExifAsciiTag(tif, TIFFTAG_MAKE, &metaData, "Exif.Image.Make");
+ tiffSetExifAsciiTag(tif, TIFFTAG_MODEL, &metaData, "Exif.Image.Model");
+ tiffSetExifAsciiTag(tif, TIFFTAG_DATETIME, &metaData, "Exif.Image.DateTime");
+ tiffSetExifAsciiTag(tif, TIFFTAG_ARTIST, &metaData, "Exif.Image.Artist");
+ tiffSetExifAsciiTag(tif, TIFFTAG_COPYRIGHT, &metaData, "Exif.Image.Copyright");
+
+ TQString soft = metaData.getExifTagString("Exif.Image.Software");
+ TQString libtiffver(TIFFLIB_VERSION_STR);
+ libtiffver.replace('\n', ' ');
+ soft.append(TQString(" ( %1 )").arg(libtiffver));
+ TIFFSetField(tif, TIFFTAG_SOFTWARE, (const char*)soft.ascii());
+
+ // NOTE: All others Exif tags will be written by Exiv2 (<= 0.18)
+
+ // -------------------------------------------------------------------
+ // Write ICC profil.
+
+ TQByteArray profile_rawdata = m_image->getICCProfil();
+
+ if (!profile_rawdata.isEmpty())
+ {
+#if defined(TIFFTAG_ICCPROFILE)
+ TIFFSetField(tif, TIFFTAG_ICCPROFILE, (uint32)profile_rawdata.size(), (uchar *)profile_rawdata.data());
+#endif
+ }
+
+ // -------------------------------------------------------------------
+ // Write full image data in tiff directory IFD0
+
+ if (observer)
+ observer->progressInfo(m_image, 0.1);
+
+ uint8 *buf=0;
+ uchar *pixel;
+ double alpha_factor;
+ uint32 x, y;
+ uint8 r8, g8, b8, a8=0;
+ uint16 r16, g16, b16, a16=0;
+ int i=0;
+
+ buf = (uint8 *) _TIFFmalloc(TIFFScanlineSize(tif));
+
+ if (!buf)
+ {
+ DDebug() << k_funcinfo << "Cannot allocate memory buffer for main image." << endl;
+ TIFFClose(tif);
+ return false;
+ }
+
+ uint checkpoint = 0;
+
+ for (y = 0; y < h; y++)
+ {
+
+ if (observer && y == checkpoint)
+ {
+ checkpoint += granularity(observer, h, 0.8);
+ if (!observer->continueQuery(m_image))
+ {
+ _TIFFfree(buf);
+ TIFFClose(tif);
+ return false;
+ }
+ observer->progressInfo(m_image, 0.1 + (0.8 * ( ((float)y)/((float)h) )));
+ }
+
+ i = 0;
+
+ for (x = 0; x < w; x++)
+ {
+ pixel = &data[((y * w) + x) * imageBytesDepth()];
+
+ if ( imageSixteenBit() ) // 16 bits image.
+ {
+ b16 = (uint16)(pixel[0]+256*pixel[1]);
+ g16 = (uint16)(pixel[2]+256*pixel[3]);
+ r16 = (uint16)(pixel[4]+256*pixel[5]);
+
+ if (imageHasAlpha())
+ {
+ // TIFF makes you pre-mutiply the rgb components by alpha
+
+ a16 = (uint16)(pixel[6]+256*pixel[7]);
+ alpha_factor = ((double)a16 / 65535.0);
+ r16 = (uint16)(r16*alpha_factor);
+ g16 = (uint16)(g16*alpha_factor);
+ b16 = (uint16)(b16*alpha_factor);
+ }
+
+ // This might be endian dependent
+
+ buf[i++] = (uint8)(r16);
+ buf[i++] = (uint8)(r16 >> 8);
+ buf[i++] = (uint8)(g16);
+ buf[i++] = (uint8)(g16 >> 8);
+ buf[i++] = (uint8)(b16);
+ buf[i++] = (uint8)(b16 >> 8);
+
+ if (imageHasAlpha())
+ {
+ buf[i++] = (uint8)(a16) ;
+ buf[i++] = (uint8)(a16 >> 8) ;
+ }
+ }
+ else // 8 bits image.
+ {
+ b8 = (uint8)pixel[0];
+ g8 = (uint8)pixel[1];
+ r8 = (uint8)pixel[2];
+
+ if (imageHasAlpha())
+ {
+ // TIFF makes you pre-mutiply the rgb components by alpha
+
+ a8 = (uint8)(pixel[3]);
+ alpha_factor = ((double)a8 / 255.0);
+ r8 = (uint8)(r8*alpha_factor);
+ g8 = (uint8)(g8*alpha_factor);
+ b8 = (uint8)(b8*alpha_factor);
+ }
+
+ // This might be endian dependent
+
+ buf[i++] = r8;
+ buf[i++] = g8;
+ buf[i++] = b8;
+
+ if (imageHasAlpha())
+ buf[i++] = a8;
+ }
+ }
+
+ if (!TIFFWriteScanline(tif, buf, y, 0))
+ {
+ DDebug() << k_funcinfo << "Cannot write main image to target file." << endl;
+ _TIFFfree(buf);
+ TIFFClose(tif);
+ return false;
+ }
+ }
+
+ _TIFFfree(buf);
+ TIFFWriteDirectory(tif);
+
+ // -------------------------------------------------------------------
+ // Write thumbnail in tiff directory IFD1
+
+ TQImage thumb = m_image->smoothScale(160, 120, TQSize::ScaleMin).copyTQImage();
+
+ TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (uint32)thumb.width());
+ TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (uint32)thumb.height());
+ TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
+ TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+ TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+ TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_NONE);
+ TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+ TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
+ TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, TIFFDefaultStripSize(tif, 0));
+
+ uchar *pixelThumb;
+ uchar *dataThumb = thumb.bits();
+ uint8 *bufThumb = (uint8 *) _TIFFmalloc(TIFFScanlineSize(tif));
+
+ if (!bufThumb)
+ {
+ DDebug() << k_funcinfo << "Cannot allocate memory buffer for thumbnail." << endl;
+ TIFFClose(tif);
+ return false;
+ }
+
+ for (y = 0 ; y < uint32(thumb.height()) ; y++)
+ {
+ i = 0;
+
+ for (x = 0 ; x < uint32(thumb.width()) ; x++)
+ {
+ pixelThumb = &dataThumb[((y * thumb.width()) + x) * 4];
+
+ // This might be endian dependent
+ bufThumb[i++] = (uint8)pixelThumb[2];
+ bufThumb[i++] = (uint8)pixelThumb[1];
+ bufThumb[i++] = (uint8)pixelThumb[0];
+ }
+
+ if (!TIFFWriteScanline(tif, bufThumb, y, 0))
+ {
+ DDebug() << k_funcinfo << "Cannot write thumbnail to target file." << endl;
+ _TIFFfree(bufThumb);
+ TIFFClose(tif);
+ return false;
+ }
+ }
+
+ _TIFFfree(bufThumb);
+ TIFFClose(tif);
+
+ // -------------------------------------------------------------------
+
+ if (observer)
+ observer->progressInfo(m_image, 1.0);
+
+ imageSetAttribute("savedformat", "TIFF");
+
+ saveMetadata(filePath);
+
+ return true;
+}
+
+bool TIFFLoader::hasAlpha() const
+{
+ return m_hasAlpha;
+}
+
+bool TIFFLoader::sixteenBit() const
+{
+ return m_sixteenBit;
+}
+
+void TIFFLoader::tiffSetExifAsciiTag(TIFF* tif, ttag_t tiffTag,
+ const DMetadata *metaData, const char* exifTagName)
+{
+ TQByteArray tag = metaData->getExifTagData(exifTagName);
+ if (!tag.isEmpty())
+ {
+ TQCString str(tag.data(), tag.size());
+ TIFFSetField(tif, tiffTag, (const char*)str);
+ }
+}
+
+void TIFFLoader::tiffSetExifDataTag(TIFF* tif, ttag_t tiffTag,
+ const DMetadata *metaData, const char* exifTagName)
+{
+ TQByteArray tag = metaData->getExifTagData(exifTagName);
+ if (!tag.isEmpty())
+ {
+ TIFFSetField (tif, tiffTag, (uint32)tag.size(), (char *)tag.data());
+ }
+}
+
+} // NameSpace Digikam
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-27 07:00:17 +0000