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

postproc/postprocess_template: Compute packedYScale and QPCorrecture without floats

Browse Source 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-31 00:50:45 +02:00
parent c41e0aedf5
commit ebe919cce2
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libpostproc/postprocess_template.c
View File

@ -3372,7 +3372,7 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
int i; int i;
uint64_t maxClipped; uint64_t maxClipped;
uint64_t clipped; uint64_t clipped;
double scale; AVRational scale;
c.frameNum++; c.frameNum++;
// first frame is fscked so we ignore it // first frame is fscked so we ignore it
@ -3397,13 +3397,13 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
clipped-= yHistogram[white]; clipped-= yHistogram[white];
} }
scale= (double)(c.ppMode.maxAllowedY - c.ppMode.minAllowedY) / (double)(white-black); scale = (AVRational){c.ppMode.maxAllowedY - c.ppMode.minAllowedY, white - black};
#if TEMPLATE_PP_MMXEXT #if TEMPLATE_PP_MMXEXT
c.packedYScale= (uint16_t)(scale*256.0 + 0.5); c.packedYScale = (uint16_t)av_rescale(scale.num, 256, scale.den);
c.packedYOffset= (((black*c.packedYScale)>>8) - c.ppMode.minAllowedY) & 0xFFFF; c.packedYOffset= (((black*c.packedYScale)>>8) - c.ppMode.minAllowedY) & 0xFFFF;
#else #else
c.packedYScale= (uint16_t)(scale*1024.0 + 0.5); c.packedYScale = (uint16_t)av_rescale(scale.num, 1024, scale.den);
c.packedYOffset= (black - c.ppMode.minAllowedY) & 0xFFFF; c.packedYOffset= (black - c.ppMode.minAllowedY) & 0xFFFF;
#endif #endif
@ -3413,7 +3413,7 @@ static void RENAME(postProcess)(const uint8_t src[], int srcStride, uint8_t dst[
c.packedYScale|= c.packedYScale<<32; c.packedYScale|= c.packedYScale<<32;
c.packedYScale|= c.packedYScale<<16; c.packedYScale|= c.packedYScale<<16;
if(mode & LEVEL_FIX) QPCorrecture= (int)(scale*256*256 + 0.5); if(mode & LEVEL_FIX) QPCorrecture= (int)av_rescale(scale.num, 256*256, scale.den);
else QPCorrecture= 256*256; else QPCorrecture= 256*256;
}else{ }else{
c.packedYScale= 0x0100010001000100LL; c.packedYScale= 0x0100010001000100LL;