/* calc from frame_bytes, channels, and bits_per_coded_sample */
switch (id) {
case AV_CODEC_ID_PCM_DVD:
- if(bps<4)
+ if(bps<4 || frame_bytes<3)
return 0;
- return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
+ return 2 * ((frame_bytes - 3) / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
- if(bps<4)
+ if(bps<4 || frame_bytes<4)
return 0;
- return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
+ return (frame_bytes - 4) / ((FFALIGN(ch, 2) * bps) / 8);
case AV_CODEC_ID_S302M:
return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
}