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Original Commit: r103 | ods15 | 2006-10-01 18:00:43 +0200 (Sun, 01 Oct 2006) | 2 lines

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slight optimization, don't calculate average twice

Originally committed as revision 6507 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Oded Shimon 2006-10-02 06:09:24 +00:00
parent 7e46045784
commit cc767a8969
1 changed files with 3 additions and 2 deletions
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5
libavcodec/vorbis_enc.c
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@ -1116,13 +1116,14 @@ static void floor_fit(venc_context_t * venc, floor_t * fc, float * coeffs, int *
int range = 255 / fc->multiplier + 1;
int i;
float tot_average = 0.;
for (i = 0; i < fc->values; i++) tot_average += get_floor_average(fc, coeffs, i);
float averages[fc->values];
for (i = 0; i < fc->values; i++) tot_average += averages[i] = get_floor_average(fc, coeffs, i);
tot_average /= fc->values;
tot_average /= venc->quality;
for (i = 0; i < fc->values; i++) {
int position = fc->list[fc->list[i].sort].x;
float average = get_floor_average(fc, coeffs, i);
float average = averages[i];
int j;
average /= pow(average, 0.5) / tot_average * pow(0.8, position/200.); // MAGIC!