Allow overriding codec_ids.

Originally committed as revision 11266 to svn://svn.ffmpeg.org/ffmpeg/trunk

2 files changed, 34 insertions, 1 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index ad8dc7d6aa..27d3c00370 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -445,6 +445,22 @@ typedef struct AVFormatContext {
 
     unsigned int nb_programs;
     AVProgram **programs;
+
+    /**
+     * Forced video codec_id.
+     * demuxing: set by user
+     */
+    enum CodecID video_codec_id;
+    /**
+     * Forced audio codec_id.
+     * demuxing: set by user
+     */
+    enum CodecID audio_codec_id;
+    /**
+     * Forced subtitle codec_id.
+     * demuxing: set by user
+     */
+    enum CodecID subtitle_codec_id;
 } AVFormatContext;
 
 typedef struct AVPacketList {
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 1a34049c21..386fe60718 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -493,8 +493,25 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
 
 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
+    int ret;
+    AVStream *st;
     av_init_packet(pkt);
-    return s->iformat->read_packet(s, pkt);
+    ret= s->iformat->read_packet(s, pkt);
+    st= s->streams[pkt->stream_index];
+
+    switch(st->codec->codec_type){
+    case CODEC_TYPE_VIDEO:
+        if(s->video_codec_id)   st->codec->codec_id= s->video_codec_id;
+        break;
+    case CODEC_TYPE_AUDIO:
+        if(s->audio_codec_id)   st->codec->codec_id= s->audio_codec_id;
+        break;
+    case CODEC_TYPE_SUBTITLE:
+        if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
+        break;
+    }
+
+    return ret;
 }
 
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