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| author | zhaoxiu.zeng <zhaoxiu.zeng@gmail.com> | 2015-03-15 16:38:27 +0800 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-03-15 13:02:57 +0100 |
| commit | bf696e265a255676fbd3a93499bac007ac5d55e2 (patch) | |
| tree | 0273833976872cc8c872fffdfae4f42cfa627195 /libavformat/avidec.c | |
| parent | e3f5b6f16d606b769a82cf4ef1647c4887419374 (diff) | |
| download | ffmpeg-bf696e265a255676fbd3a93499bac007ac5d55e2.tar.gz | |
avformat/avidec: use avpriv_find_start_code in avi_read_packet()
Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/avidec.c')
| -rw-r--r-- | libavformat/avidec.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 00f0037855..508d34b3f5 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -36,6 +36,7 @@ #include "riff.h" #include "libavcodec/bytestream.h" #include "libavcodec/exif.h" +#include "libavcodec/internal.h" #include "libavformat/isom.h" typedef struct AVIStream { @@ -1446,17 +1447,16 @@ FF_ENABLE_DEPRECATION_WARNINGS if (index >= 0 && e->timestamp == ast->frame_offset) { if (index == st->nb_index_entries-1) { int key=1; - int i; uint32_t state=-1; - for (i=0; i<FFMIN(size,256); i++) { - if (st->codec->codec_id == AV_CODEC_ID_MPEG4) { - if (state == 0x1B6) { - key= !(pkt->data[i]&0xC0); + if (st->codec->codec_id == AV_CODEC_ID_MPEG4) { + const uint8_t *ptr = pkt->data, *end = ptr + FFMIN(size, 256); + while (ptr < end) { + ptr = avpriv_find_start_code(ptr, end, &state); + if (state == 0x1B6 && ptr < end) { + key = !(*ptr & 0xC0); break; } - }else - break; - state= (state<<8) + pkt->data[i]; + } } if (!key) e->flags &= ~AVINDEX_KEYFRAME; |