diff options
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; |