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qtdemux: Not considering sample size when calculating size of chunk.

Submitted by wes..@..il.com

Link to original bug (#770678)

Description

The size of chunk is not taking into account the size of samples. Some mp4 files have stream->sample_size != 1. When this occurs they will not play audio. If stream->sample_size is 1 the current code works.

What I'm proposing is a change here to lines: 7799/7800

     if (stream->samples_per_frame * stream->bytes_per_frame) {  
       cur->size =  
  •          (stream->samples_per_chunk * stream->n_channels) /  
  •          stream->samples_per_frame * stream->bytes_per_frame;  
  •          ((stream->samples_per_chunk * stream->n_channels) /  
  •          stream->samples_per_frame) * stream->bytes_per_frame * stream->sample_size;  
   } else {  
     cur->size = stream->samples_per_chunk;  
   }