Implement ffmpeg version 5 support

Version 5.0 of ffmpeg drops a load of deprecated API functions causing
k9copy to fail its build. The necessary changes have been made to
enable k9copy to build against ffmpeg 5.0 as well as retaining support
for older versions. Support for older pre-0.5.1 versions has been
dropped as has runtime linking of the ffmpeg libraries. libswscale is
now mandatory.

Signed-off-by: aneejit1 <aneejit1@gmail.com>

3 files changed, 127 insertions, 310 deletions

diff --git a/k9author/Makefile.am b/k9author/Makefile.am
index 618df34..91d406e 100644
--- a/k9author/Makefile.am
+++ b/k9author/Makefile.am
@@ -1,11 +1,11 @@
-AM_CPPFLAGS= -I$(srcdir) -I$(includedir) $(all_includes)
+AM_CPPFLAGS= -I$(srcdir) -I$(includedir) $(all_includes) $(FFMPEG_CFLAGS)
 
 KDE_CXXFLAGS = $(ENABLE_PERMISSIVE_FLAG)
 
 METASOURCES = AUTO
 
 noinst_LTLIBRARIES = libk9author.la
-libk9author_la_LDFLAGS = $(all_libraries)
+libk9author_la_LDFLAGS = $(all_libraries) $(FFMPEG_LIBS)
 libk9author_la_SOURCES = chapterEdit.ui import.ui k9avidecode.cpp k9avifile.cpp \
 	k9canvasselection.cpp k9chapteredit.cpp k9import.cpp k9importfiles.cpp k9lvitemimport.cpp \
 	k9menu.cpp k9menubutton.cpp k9menuedit.cpp k9menueditor.cpp k9newdvd.cpp \
diff --git a/k9author/k9avidecode.cpp b/k9author/k9avidecode.cpp
index d51ec9a..107f9ae 100644
--- a/k9author/k9avidecode.cpp
+++ b/k9author/k9avidecode.cpp
@@ -12,22 +12,13 @@
 #include "config.h"
 #include "k9avidecode.h"
 
-#ifdef OLD_FFMPEG
-#include <ffmpeg/avcodec.h>
-#endif
-#ifdef NEW_FFMPEG
-#include <libavcodec/avcodec.h>
-#include <libavformat/avformat.h>
-#include <libavutil/avutil.h>
-#endif
-
 // This is probably the incorrect revision for when CODEC_TYPE_VIDEO was removed
 // Please update the comparison below if you know the exact revision that CODEC_TYPE_VIDEO was removed in!
 #if LIBAVCODEC_VERSION_INT < (AV_VERSION_INT(52,72,2))
 #define AVMEDIA_TYPE_VIDEO CODEC_TYPE_VIDEO
 #endif
 
-#if !defined(NEW_FFMPEG) || LIBAVUTIL_VERSION_INT < AV_VERSION_INT(51,42,0)
+#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(51,42,0)
 #define AV_PIX_FMT_RGB24 PIX_FMT_RGB24
 #endif
 
@@ -37,125 +28,17 @@
 #include <cstdlib>
 #include "ac.h"
 
-void *CodecHandle=0;
-void *FormatHandle=0;
-void *UtilHandle=0;
-void *SwscaleHandle=0;
-int glibref=0;
-
-#ifdef NEW_FFMPEG
-void av_free_packet_internal(AVPacket *pkt)
-{
-  if (pkt) {
-#   if LIBAVCODEC_VERSION_INT < (AV_VERSION_INT(56,0,0))
-    if (pkt->destruct) pkt->destruct(pkt);
-#   endif
-    pkt->data = NULL; pkt->size = 0;
-  }
-}
-#endif
 
-#ifdef HAVE_SWSCALE
-#include "libswscale/swscale.h"
 static int sws_flags = SWS_BICUBIC;
-#endif
 
 k9AviDecode::k9AviDecode(TQObject *parent, const char *name)
         : TQObject(parent, name) {
-    if (glibref==0) {
-        CodecHandle=dlopen("libavcodec.so",RTLD_LAZY | RTLD_GLOBAL);
-        FormatHandle=dlopen("libavformat.so",RTLD_LAZY | RTLD_GLOBAL);
-        UtilHandle=dlopen("libavutil.so",RTLD_LAZY | RTLD_GLOBAL);
-#   ifdef HAVE_SWSCALE
-        SwscaleHandle=dlopen("libswscale.so",RTLD_LAZY);
-        if (SwscaleHandle==0)
-            SwscaleHandle=dlopen("libswscale.so.2",RTLD_LAZY);
-#   endif
-    }
-    if (!CodecHandle) {
-        m_error =i18n("Cannot open then library %1").arg("libavcodec");
-        return;
-    }
-    if (!FormatHandle) {
-        m_error =i18n("Cannot open then library %1").arg("libavformat");
-        return;
-    }
-#   if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(51, 33, 0)
-    if (!UtilHandle) {
-        m_error =i18n("Cannot open then library %1").arg("libavutil");
-        return;
-    }
-#   endif
-#   ifdef HAVE_SWSCALE
-    if (!SwscaleHandle) {
-        m_error =i18n("Cannot open the library %1").arg("libswscale");
-    }
-#   endif
-    m_error="";
-    av_register_all = (av_register_all_t)dlsym(FormatHandle,"av_register_all");
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
-    avformat_open_input = (avformat_open_input_t)dlsym(FormatHandle,"avformat_open_input");
-#   else
-    av_open_input_file = (av_open_input_file_t)dlsym(FormatHandle,"av_open_input_file");
-#   endif
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
-    avformat_find_stream_info = (avformat_find_stream_info_t)dlsym(FormatHandle,"avformat_find_stream_info");
-#   else
-    av_find_stream_info = (av_find_stream_info_t)dlsym(FormatHandle,"av_find_stream_info");
-#   endif
-    avcodec_find_decoder =(avcodec_find_decoder_t) dlsym(CodecHandle,"avcodec_find_decoder");
-#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
-    avcodec_open2 = (avcodec_open2_t)dlsym(CodecHandle,"avcodec_open2");
-#   else
-    avcodec_open = (avcodec_open_t)dlsym(CodecHandle,"avcodec_open");
-#   endif
-    avcodec_alloc_frame = (avcodec_alloc_frame_t)dlsym(CodecHandle,"avcodec_alloc_frame");
-    avpicture_get_size = (avpicture_get_size_t)dlsym(CodecHandle,"avpicture_get_size");
-    av_malloc = (av_malloc_t)dlsym(CodecHandle,"av_malloc");
-    avpicture_fill = (avpicture_fill_t)dlsym(CodecHandle,"avpicture_fill");
-    av_read_frame = (av_read_frame_t)dlsym(FormatHandle,"av_read_frame");
-#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
-    avcodec_decode_video2 = (avcodec_decode_video2_t)dlsym(CodecHandle,"avcodec_decode_video2");
-#   else
-    avcodec_decode_video = (avcodec_decode_video_t)dlsym(CodecHandle,"avcodec_decode_video");
-#   endif
-#   ifndef HAVE_SWSCALE
-    img_convert = (img_convert_t)dlsym(CodecHandle,"img_convert");
-    //if img_convert is null (deprecated in ffmpeg), we need libswscale
-    if (!img_convert) {
-        m_error = i18n("Cannot open the library %1").arg("libswscale");
-        return;
-    }
-#   endif
-    av_free = (av_free_t)dlsym(CodecHandle,"av_free");
-    av_free_packet = (av_free_packet_t)dlsym(CodecHandle,"av_free_packet");
-    if (av_free_packet==0)
-        av_free_packet=av_free_packet_internal;
-    avcodec_close = (avcodec_close_t)dlsym(FormatHandle,"avcodec_close");
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
-    avformat_close_input = (avformat_close_input_t)dlsym(FormatHandle,"avformat_close_input");
-#   else
-    av_close_input_file = (av_close_input_file_t)dlsym(FormatHandle,"av_close_input_file");
-#   endif
-    av_seek_frame=(av_seek_frame_t)dlsym(FormatHandle,"av_seek_frame");
-    av_rescale_q=(av_rescale_q_t)dlsym(FormatHandle,"av_rescale_q");
-    avcodec_flush_buffers=(avcodec_flush_buffers_t)dlsym(CodecHandle,"avcodec_flush_buffers");
-#   ifdef HAVE_SWSCALE
-    sws_freeContext= (sws_freeContext_t)dlsym(SwscaleHandle,"sws_freeContext");
-    sws_getContext=(sws_getContext_t)dlsym(SwscaleHandle,"sws_getContext");
-    sws_scale= (sws_scale_t)dlsym(SwscaleHandle,"sws_scale");
-#   endif
-
-#   if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(51, 33, 0)
-    av_gettime=(av_gettime_t)dlsym(UtilHandle,"av_gettime");
-#   else
-    av_gettime=(av_gettime_t)dlsym(FormatHandle,"av_gettime");
-#   endif
+
+#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58,9,100)
     av_register_all();
+#endif
     m_opened=false;
 
-    glibref++;
-
     m_FormatCtx = NULL;
     m_CodecCtx = NULL;
     m_Codec = NULL;
@@ -168,20 +51,6 @@ k9AviDecode::k9AviDecode(TQObject *parent, const char *name)
 k9AviDecode::~k9AviDecode() {
     if (m_opened)
         close();
-    glibref--;
-    if (glibref==0) {
-        dlclose(FormatHandle);
-        dlclose(CodecHandle);
-        if(UtilHandle) {
-            dlclose(UtilHandle);
-        }
-#       ifdef HAVE_SWSCALE
-        if (SwscaleHandle) {
-            dlclose(CodecHandle);
-        }
-#       endif
-    }
-
 }
 
 
@@ -194,33 +63,36 @@ bool k9AviDecode::open(const TQString & _fileName) {
         close();
 
     // Open video file
-    if (
-#       if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
-        avformat_open_input(&m_FormatCtx, _fileName.utf8(), NULL, NULL)!=0
-#       else
-        av_open_input_file(&m_FormatCtx, _fileName.utf8(), NULL, 0, NULL)!=0
-#       endif
-       ) {
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
+    if (avformat_open_input(&m_FormatCtx, _fileName.utf8(), NULL, NULL)!=0)
+#else
+    if (av_open_input_file(&m_FormatCtx, _fileName.utf8(), NULL, 0, NULL)!=0)
+#endif
+    {
         m_error=i18n("Couldn't open the file %1").arg(_fileName);
         return false; // Couldn't open file}
     }
 // Retrieve stream information
-    if (
-#       if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
-        avformat_find_stream_info(m_FormatCtx, NULL)<0
-#       else
-        av_find_stream_info(m_FormatCtx)<0
-#       endif
-       ) {
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
+    if (avformat_find_stream_info(m_FormatCtx, NULL)<0)
+#else
+    if (av_find_stream_info(m_FormatCtx)<0)
+#endif
+    {
         m_error =i18n("Couldn't find stream information");
         return false; // Couldn't find stream information
     }
-    int i;
+    unsigned int i;
 
 // Find the first video stream
     m_videoStream=-1;
     for (i=0; i<m_FormatCtx->nb_streams; i++)
-        if (m_FormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)
+        if (m_FormatCtx->streams[i]->codecpar->codec_type==AVMEDIA_TYPE_VIDEO)
+#else
+        if (m_FormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
+#endif
+        {
             m_videoStream=i;
             break;
         }
@@ -229,34 +101,56 @@ bool k9AviDecode::open(const TQString & _fileName) {
         return false; // Didn't find a video stream
     }
 
-    // Get a pointer to the codec context for the video stream
-    m_CodecCtx=m_FormatCtx->streams[m_videoStream]->codec;
-
-
 // Find the decoder for the video stream
-    m_Codec=avcodec_find_decoder(m_CodecCtx->codec_id);
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)
+    m_Codec=(AVCodec *)avcodec_find_decoder(m_FormatCtx->streams[m_videoStream]->codecpar->codec_id);
+#else
+    m_Codec=(AVCodec *)avcodec_find_decoder(m_FormatCtx->streams[m_videoStream]->codec->codec_id);
+#endif
     if (m_Codec==NULL) {
         m_error=i18n("Unsupported codec");
         return false; // Codec not found
     }
+
+// Get/allocate a pointer to the codec context for the video stream
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(57, 33, 100)
+    m_CodecCtx = avcodec_alloc_context3(m_Codec);
+    if (m_CodecCtx) {
+        avcodec_parameters_to_context(m_CodecCtx, m_FormatCtx->streams[m_videoStream]->codecpar);
+    }
+    else {
+        m_error=i18n("Failed to allocate a codec context");
+        return false;
+    }
+#else
+    m_CodecCtx=m_FormatCtx->streams[m_videoStream]->codec;
+#endif
+
 // Open codec
-    if (
-#       if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
-        avcodec_open2(m_CodecCtx, m_Codec, NULL)<0
-#       else
-        avcodec_open(m_CodecCtx, m_Codec)<0
-#       endif
-       ) {
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
+    if (avcodec_open2(m_CodecCtx, m_Codec, NULL)<0)
+#else
+    if (avcodec_open(m_CodecCtx, m_Codec)<0)
+#endif
+    {
         m_error =i18n("Could'nt open the codec");
         return false; // Could not open codec
     }
 
 
 // Allocate video frame
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 45, 101)
+    m_Frame=av_frame_alloc();
+#else
     m_Frame=avcodec_alloc_frame();
+#endif
 
 // Allocate an AVFrame structure
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 45, 101)
+    m_FrameRGB=av_frame_alloc();
+#else
     m_FrameRGB=avcodec_alloc_frame();
+#endif
     if (m_FrameRGB==NULL) {
         m_error =i18n ("Unable to allocate memory for frames");
         return false;
@@ -265,15 +159,25 @@ bool k9AviDecode::open(const TQString & _fileName) {
 
     int numBytes;
 // Determine required buffer size and allocate buffer
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 24, 100)
+    numBytes=av_image_get_buffer_size(AV_PIX_FMT_RGB24, m_CodecCtx->width,
+                                m_CodecCtx->height, 1);
+#else
     numBytes=avpicture_get_size(AV_PIX_FMT_RGB24, m_CodecCtx->width,
                                 m_CodecCtx->height);
+#endif
     m_buffer=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
 
 // Assign appropriate parts of buffer to image planes in pFrameRGB
 // Note that pFrameRGB is an AVFrame, but AVFrame is a superset
 // of AVPicture
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 24, 100)
+    av_image_fill_arrays(m_FrameRGB->data, m_FrameRGB->linesize, m_buffer,
+                   AV_PIX_FMT_RGB24, m_CodecCtx->width, m_CodecCtx->height, 1);
+#else
     avpicture_fill((AVPicture *)m_FrameRGB, m_buffer, AV_PIX_FMT_RGB24,
                    m_CodecCtx->width, m_CodecCtx->height);
+#endif
 
     m_duration=(double)m_FormatCtx->duration / AV_TIME_BASE;
     m_opened=true;
@@ -296,60 +200,70 @@ void k9AviDecode::readFrame(double _seconds) {
     int res=av_seek_frame(m_FormatCtx, m_videoStream, fspos, AVSEEK_FLAG_BACKWARD );
     avcodec_flush_buffers(m_CodecCtx);
     int frameFinished=0;
-    AVPacket packet;
+    AVPacket *packet;
+
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 12, 100)
+    packet = av_packet_alloc();
+#else
+    AVPacket _packet;
+    av_init_packet(&_packet);
+    packet = &_packet;
+#endif
 
-#   ifdef HAVE_SWSCALE
     struct SwsContext *toRGB_convert_ctx;
-#   endif
     bool bFound=false;
-    while (av_read_frame(m_FormatCtx, &packet)>=0 &&  !bFound) {
+    while (av_read_frame(m_FormatCtx, packet)>=0 &&  !bFound) {
         // Is this a packet from the video stream?
-        if (packet.stream_index==m_videoStream) {
+        if (packet->stream_index==m_videoStream) {
             // Decode video frame
-#           if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
-            avcodec_decode_video2(m_CodecCtx, m_Frame, &frameFinished, &packet);
-#           else
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 37, 100)
+            int ret = avcodec_receive_frame(m_CodecCtx, m_Frame);
+            if (ret == 0)
+                frameFinished = 1;
+            else if (ret == AVERROR(EAGAIN))
+                ret = 0;
+            if (ret == 0)
+                ret = avcodec_send_packet(m_CodecCtx, packet);
+#elif LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
+            avcodec_decode_video2(m_CodecCtx, m_Frame, &frameFinished, packet);
+#else
             avcodec_decode_video(m_CodecCtx, m_Frame, &frameFinished,
-                                 packet.data, packet.size);
-#           endif
+                                 packet->data, packet->size);
+#endif
 
             // Did we get a video frame?
             if (frameFinished) {
-//            if (m_Frame->pts >=fspos)
-		int64_t cur_dts=fspos;
-#               if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(54, 2, 0)
-		cur_dts=	packet.dts;
-#               else
-		if (m_FormatCtx->cur_st)
-		    cur_dts=	m_FormatCtx->cur_st->cur_dts;
-#               endif
+                int64_t cur_dts=fspos;
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(54, 2, 0)
+                cur_dts = packet->dts;
+#else
+                if (m_FormatCtx->cur_st)
+                    cur_dts = m_FormatCtx->cur_st->cur_dts;
+#endif
                 if (cur_dts >=fspos) {
                     bFound=true;
-#                   ifndef HAVE_SWSCALE
-                    // Convert the image from its native format to RGB
-                    img_convert((AVPicture *)m_FrameRGB, AV_PIX_FMT_RGB24,
-                                (AVPicture*)m_Frame, m_CodecCtx->pix_fmt,
-                                m_CodecCtx->width, m_CodecCtx->height);
-
-                    // convert frame to TQImage
-                    SaveFrame(m_FrameRGB, m_CodecCtx->width,
-                              m_CodecCtx->height);
-#                   else
                     toRGB_convert_ctx=sws_getContext(m_CodecCtx->width, m_CodecCtx->height, m_CodecCtx->pix_fmt, m_CodecCtx->width, m_CodecCtx->height, AV_PIX_FMT_RGB24, sws_flags,NULL,NULL,NULL);
-                              sws_scale(toRGB_convert_ctx, m_Frame->data, m_Frame->linesize, 0, m_CodecCtx->height, m_FrameRGB->data,m_FrameRGB->linesize);
+                    sws_scale(toRGB_convert_ctx, m_Frame->data, m_Frame->linesize, 0, m_CodecCtx->height, m_FrameRGB->data,m_FrameRGB->linesize);
                     // convert frame to QImage
                     SaveFrame(m_FrameRGB, m_CodecCtx->width,
                               m_CodecCtx->height);
                     sws_freeContext(toRGB_convert_ctx);
-#                   endif
                 }
             }
         }
 
-        // Free the packet that was allocated by av_read_frame
-        av_free_packet(&packet);
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 25, 100)
+        // Unreference the packet from av_read_frame
+        av_packet_unref(packet);
+#else
+        // Free the packet from av_read_frame
+        av_free_packet(packet);
+#endif
     }
 
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 12, 100)
+    av_packet_free(&packet);
+#endif
 }
 
 void k9AviDecode::SaveFrame(AVFrame *pFrame, int width, int height) {
@@ -380,11 +294,16 @@ void k9AviDecode::close() {
         avcodec_close(m_CodecCtx);
 
         // Close the video file
-#       if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
         avformat_close_input(&m_FormatCtx);
-#       else
+#else
         av_close_input_file(m_FormatCtx);
-#       endif
+#endif
+
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(55, 63, 100)
+        avcodec_free_context(&m_CodecCtx);
+#endif
+
         m_opened=false;
     }
 }
diff --git a/k9author/k9avidecode.h b/k9author/k9avidecode.h
index 912cb85..e1ecd0f 100644
--- a/k9author/k9avidecode.h
+++ b/k9author/k9avidecode.h
@@ -14,17 +14,16 @@
 
 #include "k9common.h"
 #include <tqobject.h>
-#ifdef OLD_FFMPEG
-#include <ffmpeg/avformat.h>
-#endif
-#ifdef NEW_FFMPEG
+
+extern "C" {
 #include <libavformat/avformat.h>
+#include <libavcodec/avcodec.h>
 #include <libavutil/avutil.h>
-#endif
-
-#ifdef HAVE_SWSCALE
+#include <libavutil/time.h>
+#include <libavutil/imgutils.h>
+#include <libavutil/mathematics.h>
 #include <libswscale/swscale.h>
-#endif
+};
 
 #include <tqimage.h>
 
@@ -33,60 +32,6 @@
 */
 
 
-//typedef dvd_file_t * (*DVDOpenFile_t) ( dvd_reader_t *, int, dvd_read_domain_t );
-typedef void (*av_register_all_t) (void);
-typedef int64_t (*av_gettime_t) (void);
-#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
-typedef int (*avformat_open_input_t)(AVFormatContext **, const char *, AVInputFormat *, AVDictionary **);
-#else
-typedef int (*av_open_input_file_t)(AVFormatContext **, const char *,AVInputFormat *,int, AVFormatParameters *);
-#endif
-#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
-typedef int (*avformat_find_stream_info_t)(AVFormatContext *, AVDictionary **);
-#else
-typedef int (*av_find_stream_info_t)(AVFormatContext *);
-#endif
-#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54, 25, 0)
-typedef AVCodec* (*avcodec_find_decoder_t)(enum AVCodecID);
-#else
-typedef AVCodec* (*avcodec_find_decoder_t)(enum CodecID);
-#endif
-#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
-typedef int (*avcodec_open2_t)(AVCodecContext *, AVCodec *, AVDictionary **);
-#else
-typedef int (*avcodec_open_t)(AVCodecContext *, AVCodec *);
-#endif
-typedef AVFrame * (*avcodec_alloc_frame_t)(void);
-
-typedef int (*avpicture_get_size_t)(int , int , int );
-typedef void * (*av_malloc_t)(unsigned int );
-typedef int (*avpicture_fill_t)(AVPicture *, uint8_t *,int , int , int);
-typedef int (*av_read_frame_t)(AVFormatContext *, AVPacket *);
-
-#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
-typedef int (*avcodec_decode_video2_t)(AVCodecContext *, AVFrame *, int *, AVPacket *);
-#else
-typedef int (*avcodec_decode_video_t)(AVCodecContext *, AVFrame *,int *, uint8_t *, int );
-#endif
-typedef int (*img_convert_t)(AVPicture *, int , const AVPicture *, int ,int, int);
-typedef void (*av_free_t)(void *);
-typedef int (*avcodec_close_t)(AVCodecContext *);
-#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
-typedef void (*avformat_close_input_t)(AVFormatContext **);
-#else
-typedef void (*av_close_input_file_t)(AVFormatContext *);
-#endif
-typedef int (*av_seek_frame_t)(AVFormatContext *,int,int64_t timestamp,int flags); 		typedef int64_t (*av_rescale_q_t)(int64_t , AVRational , AVRational )	;
-typedef void (*avcodec_flush_buffers_t)(AVCodecContext *);
-typedef void (*av_free_packet_t)(AVPacket *);
-
-#ifdef HAVE_SWSCALE
-typedef void (*sws_freeContext_t)(struct SwsContext *swsContext);
-typedef struct SwsContext* (*sws_getContext_t)(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
-typedef int (*sws_scale_t)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,int srcSliceH, uint8_t* dst[], int dstStride[]);
-#endif
-
-
 class k9AviDecode : public TQObject
 {
 Q_OBJECT
@@ -104,56 +49,9 @@ public:
 
     TQString getFileName() const;
 
-	TQString getError() const;
+    TQString getError() const;
 	
 private:
-    av_register_all_t av_register_all;
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
-    avformat_open_input_t avformat_open_input;
-#   else
-    av_open_input_file_t av_open_input_file;
-#   endif
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
-    avformat_find_stream_info_t avformat_find_stream_info;
-#   else
-    av_find_stream_info_t av_find_stream_info;
-#   endif
-    avcodec_find_decoder_t avcodec_find_decoder;
-#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
-    avcodec_open2_t avcodec_open2;
-#   else
-    avcodec_open_t avcodec_open;
-#   endif
-    avcodec_alloc_frame_t avcodec_alloc_frame;
-    av_seek_frame_t av_seek_frame;
-    avpicture_get_size_t avpicture_get_size;
-    av_malloc_t av_malloc;
-    avpicture_fill_t avpicture_fill;
-    av_read_frame_t av_read_frame;
-#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
-    avcodec_decode_video2_t avcodec_decode_video2;
-#   else
-    avcodec_decode_video_t avcodec_decode_video;
-#   endif
-    img_convert_t img_convert;
-    av_free_t av_free;
-    avcodec_close_t avcodec_close;
-#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
-    avformat_close_input_t avformat_close_input;
-#   else
-    av_close_input_file_t av_close_input_file;
-#   endif
-    av_rescale_q_t av_rescale_q;
-    av_gettime_t av_gettime;
-    avcodec_flush_buffers_t avcodec_flush_buffers;
-    av_free_packet_t av_free_packet;
-#   ifdef HAVE_SWSCALE
-    sws_freeContext_t sws_freeContext;
-    sws_getContext_t sws_getContext;
-    sws_scale_t sws_scale;
-#   endif
-
-
     AVFormatContext *m_FormatCtx;
     AVCodecContext *m_CodecCtx;
     AVCodec *m_Codec;