diff options
| -rw-r--r-- | libavcodec/alac.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/libavcodec/alac.c b/libavcodec/alac.c index 942f6865d4..03f9ae3f39 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -412,19 +412,16 @@ static void deinterlace_16(int32_t *buffer[MAX_CHANNELS], /* weighted interlacing */ if (interlacing_leftweight) { for (i = 0; i < numsamples; i++) { - int32_t difference, midright; - int16_t left; - int16_t right; + int32_t a, b; - midright = buffer[0][i]; - difference = buffer[1][i]; + a = buffer[0][i]; + b = buffer[1][i]; + a -= (b * interlacing_leftweight) >> interlacing_shift; + b += a; - right = midright - ((difference * interlacing_leftweight) >> interlacing_shift); - left = right + difference; - - buffer_out[i*numchannels] = left; - buffer_out[i*numchannels + 1] = right; + buffer_out[i*numchannels] = b; + buffer_out[i*numchannels + 1] = a; } return; |