diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 9037650f1d..0341f18e37 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -48,6 +48,7 @@ typedef struct AVIStream { int prefix_count; uint32_t pal[256]; int has_pal; + int block_align; ///< AVCodecContext.block_align copied here for easier access } AVIStream; typedef struct { @@ -92,6 +93,8 @@ static void print_tag(const char *str, unsigned int tag, int size) static inline int get_duration(AVIStream *ast, int len){ if(ast->sample_size){ return len; + }else if (ast->block_align){ + return (len + ast->block_align - 1)/ast->block_align; }else return 1; } @@ -569,6 +572,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) break; case AVMEDIA_TYPE_AUDIO: ff_get_wav_header(pb, st->codec, size); + ast->block_align= st->codec->block_align; if(ast->sample_size && st->codec->block_align && ast->sample_size != st->codec->block_align){ av_log(s, AV_LOG_WARNING, "sample size (%d) != block align (%d)\n", ast->sample_size, st->codec->block_align); ast->sample_size= st->codec->block_align;