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Move internal scale context fields initialization from

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sws_setColorspaceDetails() to ff_yuv2rgb_c_init_tables().

Allow to factorize duplicated code.

Originally committed as revision 31300 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Stefano Sabatini 2010-06-01 11:30:07 +00:00
parent 79513857ba
commit 0093ac5b9f
2 changed files with 24 additions and 50 deletions
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50
libswscale/utils.c
View File

@ -671,23 +671,8 @@ static void getSubSampleFactors(int *h, int *v, enum PixelFormat format)
*v = av_pix_fmt_descriptors[format].log2_chroma_h;
}
static uint16_t roundToInt16(int64_t f)
{
int r= (f + (1<<15))>>16;
if (r<-0x7FFF) return 0x8000;
else if (r> 0x7FFF) return 0x7FFF;
else return r;
}
int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)
{
int64_t crv = inv_table[0];
int64_t cbu = inv_table[1];
int64_t cgu = -inv_table[2];
int64_t cgv = -inv_table[3];
int64_t cy = 1<<16;
int64_t oy = 0;
memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);
memcpy(c->dstColorspaceTable, table, sizeof(int)*4);
@ -698,41 +683,6 @@ int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange
c->dstRange = dstRange;
if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;
c->uOffset= 0x0400040004000400LL;
c->vOffset= 0x0400040004000400LL;
if (!srcRange) {
cy= (cy*255) / 219;
oy= 16<<16;
} else {
crv= (crv*224) / 255;
cbu= (cbu*224) / 255;
cgu= (cgu*224) / 255;
cgv= (cgv*224) / 255;
}
cy = (cy *contrast )>>16;
crv= (crv*contrast * saturation)>>32;
cbu= (cbu*contrast * saturation)>>32;
cgu= (cgu*contrast * saturation)>>32;
cgv= (cgv*contrast * saturation)>>32;
oy -= 256*brightness;
c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy <<13);
c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);
//FIXME factorize

24
libswscale/yuv2rgb.c
View File

@ -620,6 +620,14 @@ static void fill_gv_table(int table[256], const int elemsize, const int inc)
}
}
static uint16_t roundToInt16(int64_t f)
{
int r= (f + (1<<15))>>16;
if (r<-0x7FFF) return 0x8000;
else if (r> 0x7FFF) return 0x7FFF;
else return r;
}
av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange,
int brightness, int contrast, int saturation)
{
@ -675,6 +683,22 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int
cgv = (cgv*contrast * saturation) >> 32;
oy -= 256*brightness;
c->uOffset= 0x0400040004000400LL;
c->vOffset= 0x0400040004000400LL;
c->yCoeff= roundToInt16(cy *8192) * 0x0001000100010001ULL;
c->vrCoeff= roundToInt16(crv*8192) * 0x0001000100010001ULL;
c->ubCoeff= roundToInt16(cbu*8192) * 0x0001000100010001ULL;
c->vgCoeff= roundToInt16(cgv*8192) * 0x0001000100010001ULL;
c->ugCoeff= roundToInt16(cgu*8192) * 0x0001000100010001ULL;
c->yOffset= roundToInt16(oy * 8) * 0x0001000100010001ULL;
c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy <<13);
c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);
c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);
c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);
c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);
c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);
//scale coefficients by cy
crv = ((crv << 16) + 0x8000) / cy;
cbu = ((cbu << 16) + 0x8000) / cy;