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Additional checks for strange num_val in FLV metadata

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Avoids some "Unsupported audio codec (6)" message in FLVs, e.g.
        Example of such problematic bitstream is 'bad_codec6.flv'
        in ftp's /incoming directory.

Originally committed as revision 12510 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Pascal Massimino 2008-03-20 11:02:40 +00:00
parent 6122b733e9
commit c04c52d3a8
1 changed files with 5 additions and 3 deletions
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8
libavformat/flvdec.c
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@ -175,9 +175,11 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vst
if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE;
// else if(!strcmp(key, "width") && vcodec && num_val > 0) vcodec->width = num_val;
// else if(!strcmp(key, "height") && vcodec && num_val > 0) vcodec->height = num_val;
else if(!strcmp(key, "audiocodecid") && acodec) flv_set_audio_codec(s, astream, (int)num_val << FLV_AUDIO_CODECID_OFFSET);
else if(!strcmp(key, "videocodecid") && vcodec) flv_set_video_codec(s, vstream, (int)num_val);
else if(!strcmp(key, "audiosamplesize") && acodec && num_val >= 0) {
else if(!strcmp(key, "audiocodecid") && acodec && 0 <= (int)num_val)
flv_set_audio_codec(s, astream, (int)num_val << FLV_AUDIO_CODECID_OFFSET);
else if(!strcmp(key, "videocodecid") && vcodec && 0 <= (int)num_val)
flv_set_video_codec(s, vstream, (int)num_val);
else if(!strcmp(key, "audiosamplesize") && acodec && 0 < (int)num_val) {
acodec->bits_per_sample = num_val;
//we may have to rewrite a previously read codecid because FLV only marks PCM endianness.
if(num_val == 8 && (acodec->codec_id == CODEC_ID_PCM_S16BE || acodec->codec_id == CODEC_ID_PCM_S16LE))