diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/video_out/yuv2rgb_mmx.c | 128 |
1 files changed, 52 insertions, 76 deletions
diff --git a/src/video_out/yuv2rgb_mmx.c b/src/video_out/yuv2rgb_mmx.c index c0c362bfd..4c8142e8e 100644 --- a/src/video_out/yuv2rgb_mmx.c +++ b/src/video_out/yuv2rgb_mmx.c @@ -57,7 +57,8 @@ do { \ typedef struct mmx_csc_s mmx_csc_t; struct mmx_csc_s { - mmx_t subYw; + mmx_t x00ffw; + mmx_t x0080w; mmx_t addYw; mmx_t U_green; mmx_t U_blue; @@ -71,8 +72,12 @@ extern const int32_t Inverse_Table_6_9[8][4]; 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, cty; + int i; + + int yoffset = -16; + int ygain = ((1 << 16) * 255) / 219; + mmx_csc_t *csc; /* 'table_mmx' is 64bit aligned for better performance */ @@ -80,21 +85,10 @@ void mmx_yuv2rgb_set_csc_levels(yuv2rgb_factory_t *this, this->table_mmx = av_mallocz(sizeof(mmx_csc_t)); } - if( brightness <= 16 ) { - a = 0; - s = 16 - brightness; - } else { - a = brightness - 16; - s = 0; - } + yoffset += brightness; csc = (mmx_csc_t *) this->table_mmx; - for( i = 0; i < 8; i++ ) { - csc->subYw.ub[i] = s; - csc->addYw.ub[i] = a; - } - crv = Inverse_Table_6_9[this->matrix_coefficients][0]; crv = (crv * saturation + 512) / 1024; cbu = Inverse_Table_6_9[this->matrix_coefficients][1]; @@ -104,7 +98,10 @@ void mmx_yuv2rgb_set_csc_levels(yuv2rgb_factory_t *this, cgu = (cgu * saturation + 512) / 1024; cgv = Inverse_Table_6_9[this->matrix_coefficients][3]; cgv = (cgv * saturation + 512) / 1024; - cty = (76309 * contrast + 512) / 1024; + cty = (ygain * contrast + 512) / 1024; + + /* the 8 is "+0,5" for later rounding */ + yoffset = ((cty * (yoffset << 7)) >> 16) + 8; for (i=0; i < 4; i++) { csc->U_green.w[i] = -cgu; @@ -112,115 +109,94 @@ void mmx_yuv2rgb_set_csc_levels(yuv2rgb_factory_t *this, csc->V_red.w[i] = crv; csc->V_green.w[i] = -cgv; csc->Y_coeff.w[i] = cty; + + csc->addYw.w[i] = yoffset; + + csc->x0080w.w[i] = 128; + csc->x00ffw.w[i] = 0xff; } } static inline void mmx_yuv2rgb (uint8_t * py, uint8_t * pu, uint8_t * pv, mmx_csc_t *csc) { - static mmx_t mmx_80w = {0x0080008000800080ULL}; - static mmx_t mmx_00ffw = {0x00ff00ff00ff00ffULL}; - static mmx_t mmx_0002w = {0x0002000200020002ULL}; + + /* OK what we're doing here is + y = ((cty * (y << 7)) >> 16) + yoffset; + u = (u - 128) << 7; + v = (v - 128) << 7; + r = (y + ((crv * v) >> 16)) >> 4; + g = (y + ((cgu * u) >> 16) + ((cgv * v) >> 16)) >> 4; + b = (y + ((cbu * u) >> 16)) >> 4; */ movq_m2r (*py, mm6); // mm6 = Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 pxor_r2r (mm4, mm4); // mm4 = 0 - - psubusb_m2r (csc->subYw, mm6); // Y -= 16 - paddusb_m2r (csc->addYw, mm6); - movd_m2r (*pu, mm0); // mm0 = 00 00 00 00 u3 u2 u1 u0 + movq_r2r (mm6, mm7); // mm7 = Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 + pand_m2r (csc->x00ffw, mm6); // mm6 = Y6 Y4 Y2 Y0 - pand_m2r (mmx_00ffw, mm6); // mm6 = Y6 Y4 Y2 Y0 psrlw_i2r (8, mm7); // mm7 = Y7 Y5 Y3 Y1 - + psllw_i2r (7, mm6); // promote precision movd_m2r (*pv, mm1); // mm1 = 00 00 00 00 v3 v2 v1 v0 - psllw_i2r (5, mm6); // promote precision pmulhw_m2r (csc->Y_coeff, mm6); // mm6 = luma_rgb even - paddsw_m2r (mmx_0002w, mm6); // +0.5 for later rounding - psllw_i2r (5, mm7); // promote precision - + psllw_i2r (7, mm7); // promote precision punpcklbw_r2r (mm4, mm0); // mm0 = u3 u2 u1 u0 - psubsw_m2r (mmx_80w, mm0); // u -= 128 + paddsw_m2r (csc->addYw, mm6); // += yoffset + psubsw_m2r (csc->x0080w, mm0); // u -= 128 punpcklbw_r2r (mm4, mm1); // mm1 = v3 v2 v1 v0 - pmulhw_m2r (csc->Y_coeff, mm7); // mm7 = luma_rgb odd - paddsw_m2r (mmx_0002w, mm7); // +0.5 for later rounding - psllw_i2r (5, mm0); // promote precision - psubsw_m2r (mmx_80w, mm1); // v -= 128 - movq_r2r (mm0, mm2); // mm2 = u3 u2 u1 u0 + psllw_i2r (7, mm0); // promote precision + psubsw_m2r (csc->x0080w, mm1); // v -= 128 - psllw_i2r (5, mm1); // promote precision + movq_r2r (mm0, mm2); // mm2 = u3 u2 u1 u0 + psllw_i2r (7, mm1); // promote precision movq_r2r (mm1, mm4); // mm4 = v3 v2 v1 v0 - pmulhw_m2r (csc->U_blue, mm0); // mm0 = chroma_b - - - // slot - - - // slot - - + paddsw_m2r (csc->addYw, mm7); // += yoffset + pmulhw_m2r (csc->U_blue, mm0); // mm0 = chroma_b pmulhw_m2r (csc->V_red, mm1); // mm1 = chroma_r + movq_r2r (mm0, mm3); // mm3 = chroma_b paddsw_r2r (mm6, mm0); // mm0 = B6 B4 B2 B0 paddsw_r2r (mm7, mm3); // mm3 = B7 B5 B3 B1 - psraw_i2r (2, mm0); // div round - packuswb_r2r (mm0, mm0); // saturate to 0-255 - - + psraw_i2r (4, mm0); // div round pmulhw_m2r (csc->U_green, mm2); // mm2 = u * u_green + psraw_i2r (4, mm3); // div round - - psraw_i2r (2, mm3); // div round + packuswb_r2r (mm0, mm0); // saturate to 0-255 packuswb_r2r (mm3, mm3); // saturate to 0-255 - - - punpcklbw_r2r (mm3, mm0); // mm0 = B7 B6 B5 B4 B3 B2 B1 B0 - - pmulhw_m2r (csc->V_green, mm4); // mm4 = v * v_green - - // slot - - - // slot - - + punpcklbw_r2r (mm3, mm0); // mm0 = B7 B6 B5 B4 B3 B2 B1 B0 paddsw_r2r (mm4, mm2); // mm2 = chroma_g - movq_r2r (mm2, mm5); // mm5 = chroma_g + movq_r2r (mm1, mm4); // mm4 = chroma_r + movq_r2r (mm2, mm5); // mm5 = chroma_g - movq_r2r (mm1, mm4); // mm4 = chroma_r paddsw_r2r (mm6, mm2); // mm2 = G6 G4 G2 G0 - - psraw_i2r (2, mm2); // div round - packuswb_r2r (mm2, mm2); // saturate to 0-255 + psraw_i2r (4, mm2); // div round paddsw_r2r (mm6, mm1); // mm1 = R6 R4 R2 R0 - psraw_i2r (2, mm1); // div round - packuswb_r2r (mm1, mm1); // saturate to 0-255 + packuswb_r2r (mm2, mm2); // saturate to 0-255 + psraw_i2r (4, mm1); // div round paddsw_r2r (mm7, mm4); // mm4 = R7 R5 R3 R1 - psraw_i2r (2, mm4); // div round - packuswb_r2r (mm4, mm4); // saturate to 0-255 + packuswb_r2r (mm1, mm1); // saturate to 0-255 + psraw_i2r (4, mm4); // div round paddsw_r2r (mm7, mm5); // mm5 = G7 G5 G3 G1 - - psraw_i2r (2, mm5); // div round - packuswb_r2r (mm5, mm5); // saturate to 0-255 - + packuswb_r2r (mm4, mm4); // saturate to 0-255 + psraw_i2r (4, mm5); // div round punpcklbw_r2r (mm4, mm1); // mm1 = R7 R6 R5 R4 R3 R2 R1 R0 - + packuswb_r2r (mm5, mm5); // saturate to 0-255 punpcklbw_r2r (mm5, mm2); // mm2 = G7 G6 G5 G4 G3 G2 G1 G0 } |