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| author | Ewald Snel <esnel@users.sourceforge.net> | 2003-02-02 14:09:21 +0000 |
|---|---|---|
| committer | Ewald Snel <esnel@users.sourceforge.net> | 2003-02-02 14:09:21 +0000 |
| commit | f003b3a69b19f53c10757080daf49b53aa99f350 (patch) | |
| tree | 410ee9bec12bcb706dbead38f975b232ff696a90 | |
| parent | 64209c1471e0233275f034fde449e353ae42772a (diff) | |
| download | xine-lib-f003b3a69b19f53c10757080daf49b53aa99f350.tar.gz xine-lib-f003b3a69b19f53c10757080daf49b53aa99f350.tar.bz2 | |
Add contrast support to MMX yuv2rgb conversion, fix 'cbu' clipping
CVS patchset: 4090
CVS date: 2003/02/02 14:09:21
| -rw-r--r-- | src/video_out/yuv2rgb_mmx.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/video_out/yuv2rgb_mmx.c b/src/video_out/yuv2rgb_mmx.c index b85acd313..c631db885 100644 --- a/src/video_out/yuv2rgb_mmx.c +++ b/src/video_out/yuv2rgb_mmx.c @@ -61,7 +61,7 @@ void mmx_yuv2rgb_set_csc_levels(yuv2rgb_factory_t *this, int brightness, int contrast, int saturation) { int a,s,i; - int crv, cbu, cgu, cgv; + int crv, cbu, cgu, cgv, cty; if( brightness <= 16 ) { a = 0; @@ -76,22 +76,23 @@ void mmx_yuv2rgb_set_csc_levels(yuv2rgb_factory_t *this, *((unsigned char *)&mmx_addYw + i) = a; } - saturation = (saturation > 242) ? 242 : saturation; - crv = Inverse_Table_6_9[this->matrix_coefficients][0]; crv = (crv * saturation + 512) / 1024; cbu = Inverse_Table_6_9[this->matrix_coefficients][1]; cbu = (cbu * saturation + 512) / 1024; + cbu = (cbu > 32767) ? 32767 : cbu; cgu = Inverse_Table_6_9[this->matrix_coefficients][2]; cgu = (cgu * saturation + 512) / 1024; cgv = Inverse_Table_6_9[this->matrix_coefficients][3]; cgv = (cgv * saturation + 512) / 1024; + cty = (76309 * contrast + 512) / 1024; for (i=0; i < 4; i++) { *((int16_t *)&mmx_U_green + i) = -cgu; *((int16_t *)&mmx_U_blue + i) = cbu; *((int16_t *)&mmx_V_red + i) = crv; *((int16_t *)&mmx_V_green + i) = -cgv; + *((int16_t *)&mmx_Y_coeff + i) = cty; } } |