virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity

aacenc_utils: Use temporary variable.

Browse Source 
This ensures gcc does not create unnecessary
loads or stores and possibly even does not vectorize
the negation.
Speeds up mp3 to aac transcoding with default settings
by 10% when using "gcc (Debian 5.3.1-10) 5.3.1 20160224".

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
(cherry picked from commit b60dfae7af)
This commit is contained in:
Reimar Döffinger 2016-03-06 21:25:11 +01:00 committed by Rostislav Pehlivanov
parent 1cbe4ff2ac
commit b176ab0556
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/aacenc_utils.h
View File

@ -68,10 +68,11 @@ static inline void quantize_bands(int *out, const float *in, const float *scaled
int i;
for (i = 0; i < size; i++) {
float qc = scaled[i] * Q34;
out[i] = (int)FFMIN(qc + rounding, (float)maxval);
int tmp = (int)FFMIN(qc + rounding, (float)maxval);
if (is_signed && in[i] < 0.0f) {
out[i] = -out[i];
tmp = -tmp;
}
out[i] = tmp;
}
}