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Duplicate rounding that MS does in one of their implementations of an avi demuxer. 

Fixes issue740
Based on patch by Cory Fields theuni-nospam- >xbmc @org

Originally committed as revision 23999 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-07-02 15:09:27 +00:00
parent 79042a6eb1
commit d01144b9d3
1 changed files with 4 additions and 0 deletions
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4
libavformat/avidec.c
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@ -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;