MrBesen/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

avidec: do not export stream_codec_tag

Browse Source 
Handle its only existing use case internally.
This commit is contained in:
Anton Khirnov 2014-11-14 15:11:09 +01:00
parent 167e004e1a
commit f771b3ab5d
2 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
libavcodec/mpeg4videodec.c
View File

@ -2047,8 +2047,7 @@ static int decode_user_data(Mpeg4DecContext *ctx, GetBitContext *gb)
ctx->xvid_build = build;
if (ctx->xvid_build == -1 && ctx->divx_version == -1 && ctx->lavc_build == -1) {
if (s->stream_codec_tag == AV_RL32("XVID") ||
s->codec_tag == AV_RL32("XVID") ||
if (s->codec_tag == AV_RL32("XVID") ||
s->codec_tag == AV_RL32("XVIX") ||
s->codec_tag == AV_RL32("RMP4") ||
s->codec_tag == AV_RL32("ZMP4") ||

10
libavformat/avidec.c
View File

@ -42,6 +42,7 @@ typedef struct AVIStream {
int remaining;
int packet_size;
uint32_t handler;
uint32_t scale;
uint32_t rate;
int sample_size; /* size of one sample (or packet)
@ -515,7 +516,7 @@ static int avi_read_header(AVFormatContext *s)
}
assert(stream_index < s->nb_streams);
st->codec->stream_codec_tag = handler;
ast->handler = handler;
avio_rl32(pb); /* flags */
avio_rl16(pb); /* priority */
@ -650,6 +651,11 @@ static int avi_read_header(AVFormatContext *s)
/* This is needed to get the pict type which is necessary
* for generating correct pts. */
st->need_parsing = AVSTREAM_PARSE_HEADERS;
if (st->codec->codec_id == AV_CODEC_ID_MPEG4 &&
ast->handler == MKTAG('X', 'V', 'I', 'D'))
st->codec->codec_tag = MKTAG('X', 'V', 'I', 'D');
// Support "Resolution 1:1" for Avid AVI Codec
if (tag1 == MKTAG('A', 'V', 'R', 'n') &&
st->codec->extradata_size >= 31 &&
@ -701,7 +707,7 @@ static int avi_read_header(AVFormatContext *s)
st->need_parsing = AVSTREAM_PARSE_NONE;
/* AVI files with Xan DPCM audio (wrongly) declare PCM
* audio in the header but have Axan as stream_code_tag. */
if (st->codec->stream_codec_tag == AV_RL32("Axan")) {
if (ast->handler == AV_RL32("Axan")) {
st->codec->codec_id = AV_CODEC_ID_XAN_DPCM;
st->codec->codec_tag = 0;
}