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/* |
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* software YUV to RGB converter |
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* |
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* Copyright (C) 2001-2007 Michael Niedermayer |
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* (c) 2010 Konstantin Shishkov |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#undef MOVNTQ |
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#undef EMMS |
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#undef SFENCE |
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#if HAVE_AMD3DNOW |
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/* On K6 femms is faster than emms. On K7 femms is directly mapped to emms. */ |
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#define EMMS "femms" |
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#else |
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#define EMMS "emms" |
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#endif |
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#if HAVE_MMX2 |
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#define MOVNTQ "movntq" |
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#define SFENCE "sfence" |
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#else |
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#define MOVNTQ "movq" |
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#define SFENCE " # nop" |
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#endif |
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#define REG_BLUE "0" |
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#define REG_RED "1" |
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#define REG_GREEN "2" |
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#define REG_ALPHA "3" |
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#define YUV2RGB_LOOP(depth) \ |
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h_size = (c->dstW + 7) & ~7; \ |
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if (h_size * depth > FFABS(dstStride[0])) \ |
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h_size -= 8; \ |
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\ |
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if (c->srcFormat == PIX_FMT_YUV422P) { \ |
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srcStride[1] *= 2; \ |
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srcStride[2] *= 2; \ |
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} \ |
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\ |
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__asm__ volatile ("pxor %mm4, %mm4\n\t"); \ |
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for (y = 0; y < srcSliceH; y++) { \ |
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uint8_t *image = dst[0] + (y + srcSliceY) * dstStride[0]; \ |
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const uint8_t *py = src[0] + y * srcStride[0]; \ |
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const uint8_t *pu = src[1] + (y >> 1) * srcStride[1]; \ |
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const uint8_t *pv = src[2] + (y >> 1) * srcStride[2]; \ |
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x86_reg index = -h_size / 2; \ |
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#define YUV2RGB_INITIAL_LOAD \ |
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__asm__ volatile ( \ |
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"movq (%5, %0, 2), %%mm6\n\t" \ |
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"movd (%2, %0), %%mm0\n\t" \ |
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"movd (%3, %0), %%mm1\n\t" \ |
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"1: \n\t" \ |
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/* YUV2RGB core |
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* Conversion is performed in usual way: |
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* R = Y' * Ycoef + Vred * V' |
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* G = Y' * Ycoef + Vgreen * V' + Ugreen * U' |
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* B = Y' * Ycoef + Ublue * U' |
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* |
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* where X' = X * 8 - Xoffset (multiplication is performed to increase |
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* precision a bit). |
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* Since it operates in YUV420 colorspace, Y component is additionally |
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* split into Y1 and Y2 for even and odd pixels. |
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* |
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* Input: |
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* mm0 - U (4 elems), mm1 - V (4 elems), mm6 - Y (8 elems), mm4 - zero register |
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* Output: |
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* mm1 - R, mm2 - G, mm0 - B |
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*/ |
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#define YUV2RGB \ |
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/* convert Y, U, V into Y1', Y2', U', V' */ \ |
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"movq %%mm6, %%mm7\n\t" \ |
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"punpcklbw %%mm4, %%mm0\n\t" \ |
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"punpcklbw %%mm4, %%mm1\n\t" \ |
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"pand "MANGLE(mmx_00ffw)", %%mm6\n\t" \ |
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"psrlw $8, %%mm7\n\t" \ |
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"psllw $3, %%mm0\n\t" \ |
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"psllw $3, %%mm1\n\t" \ |
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"psllw $3, %%mm6\n\t" \ |
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"psllw $3, %%mm7\n\t" \ |
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"psubsw "U_OFFSET"(%4), %%mm0\n\t" \ |
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"psubsw "V_OFFSET"(%4), %%mm1\n\t" \ |
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"psubw "Y_OFFSET"(%4), %%mm6\n\t" \ |
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"psubw "Y_OFFSET"(%4), %%mm7\n\t" \ |
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\ |
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/* multiply by coefficients */ \ |
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"movq %%mm0, %%mm2\n\t" \ |
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"movq %%mm1, %%mm3\n\t" \ |
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"pmulhw "UG_COEFF"(%4), %%mm2\n\t" \ |
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"pmulhw "VG_COEFF"(%4), %%mm3\n\t" \ |
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"pmulhw "Y_COEFF" (%4), %%mm6\n\t" \ |
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"pmulhw "Y_COEFF" (%4), %%mm7\n\t" \ |
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"pmulhw "UB_COEFF"(%4), %%mm0\n\t" \ |
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"pmulhw "VR_COEFF"(%4), %%mm1\n\t" \ |
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"paddsw %%mm3, %%mm2\n\t" \ |
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/* now: mm0 = UB, mm1 = VR, mm2 = CG */ \ |
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/* mm6 = Y1, mm7 = Y2 */ \ |
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\ |
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/* produce RGB */ \ |
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"movq %%mm7, %%mm3\n\t" \ |
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"movq %%mm7, %%mm5\n\t" \ |
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"paddsw %%mm0, %%mm3\n\t" \ |
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"paddsw %%mm1, %%mm5\n\t" \ |
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"paddsw %%mm2, %%mm7\n\t" \ |
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"paddsw %%mm6, %%mm0\n\t" \ |
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"paddsw %%mm6, %%mm1\n\t" \ |
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"paddsw %%mm6, %%mm2\n\t" \ |
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#define RGB_PACK_INTERLEAVE \ |
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/* pack and interleave even/odd pixels */ \ |
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"packuswb %%mm1, %%mm0\n\t" \ |
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"packuswb %%mm5, %%mm3\n\t" \ |
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"packuswb %%mm2, %%mm2\n\t" \ |
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"movq %%mm0, %%mm1\n\n" \ |
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"packuswb %%mm7, %%mm7\n\t" \ |
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"punpcklbw %%mm3, %%mm0\n\t" \ |
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"punpckhbw %%mm3, %%mm1\n\t" \ |
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"punpcklbw %%mm7, %%mm2\n\t" \ |
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#define YUV2RGB_ENDLOOP(depth) \ |
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"movq 8 (%5, %0, 2), %%mm6\n\t" \ |
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"movd 4 (%3, %0), %%mm1\n\t" \ |
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"movd 4 (%2, %0), %%mm0\n\t" \ |
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"add $"AV_STRINGIFY(depth * 8)", %1\n\t" \ |
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"add $4, %0\n\t" \ |
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"js 1b\n\t" \ |
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#define YUV2RGB_OPERANDS \ |
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: "+r" (index), "+r" (image) \ |
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: "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \ |
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"r" (py - 2*index) \ |
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); \ |
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} \ |
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#define YUV2RGB_OPERANDS_ALPHA \ |
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: "+r" (index), "+r" (image) \ |
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: "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \ |
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"r" (py - 2*index), "r" (pa - 2*index) \ |
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); \ |
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} \ |
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#define YUV2RGB_ENDFUNC \ |
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__asm__ volatile (SFENCE"\n\t"EMMS); \ |
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return srcSliceH; \ |
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#define IF0(x) |
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#define IF1(x) x |
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#define RGB_PACK16(gmask, is15) \ |
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"pand "MANGLE(mmx_redmask)", %%mm0\n\t" \ |
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"pand "MANGLE(mmx_redmask)", %%mm1\n\t" \ |
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"movq %%mm2, %%mm3\n\t" \ |
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"psllw $"AV_STRINGIFY(3-is15)", %%mm2\n\t" \ |
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"psrlw $"AV_STRINGIFY(5+is15)", %%mm3\n\t" \ |
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"psrlw $3, %%mm0\n\t" \ |
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IF##is15("psrlw $1, %%mm1\n\t") \ |
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"pand "MANGLE(pb_e0)", %%mm2\n\t" \ |
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"pand "MANGLE(gmask)", %%mm3\n\t" \ |
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"por %%mm2, %%mm0\n\t" \ |
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"por %%mm3, %%mm1\n\t" \ |
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"movq %%mm0, %%mm2\n\t" \ |
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"punpcklbw %%mm1, %%mm0\n\t" \ |
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"punpckhbw %%mm1, %%mm2\n\t" \ |
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MOVNTQ " %%mm0, (%1)\n\t" \ |
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MOVNTQ " %%mm2, 8(%1)\n\t" \ |
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#define DITHER_RGB \ |
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"paddusb "BLUE_DITHER"(%4), %%mm0\n\t" \ |
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"paddusb "GREEN_DITHER"(%4), %%mm2\n\t" \ |
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"paddusb "RED_DITHER"(%4), %%mm1\n\t" \ |
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static inline int RENAME(yuv420_rgb15)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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uint8_t *dst[], int dstStride[]) |
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{ |
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int y, h_size; |
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YUV2RGB_LOOP(2) |
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#ifdef DITHER1XBPP |
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c->blueDither = ff_dither8[y & 1]; |
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c->greenDither = ff_dither8[y & 1]; |
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c->redDither = ff_dither8[(y + 1) & 1]; |
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#endif |
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YUV2RGB_INITIAL_LOAD |
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YUV2RGB |
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RGB_PACK_INTERLEAVE |
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#ifdef DITHER1XBPP |
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DITHER_RGB |
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#endif |
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RGB_PACK16(pb_03, 1) |
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YUV2RGB_ENDLOOP(2) |
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YUV2RGB_OPERANDS |
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YUV2RGB_ENDFUNC |
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} |
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static inline int RENAME(yuv420_rgb16)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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uint8_t *dst[], int dstStride[]) |
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{ |
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int y, h_size; |
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YUV2RGB_LOOP(2) |
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#ifdef DITHER1XBPP |
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c->blueDither = ff_dither8[y & 1]; |
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c->greenDither = ff_dither4[y & 1]; |
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c->redDither = ff_dither8[(y + 1) & 1]; |
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#endif |
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YUV2RGB_INITIAL_LOAD |
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YUV2RGB |
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RGB_PACK_INTERLEAVE |
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#ifdef DITHER1XBPP |
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DITHER_RGB |
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#endif |
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RGB_PACK16(pb_07, 0) |
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YUV2RGB_ENDLOOP(2) |
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YUV2RGB_OPERANDS |
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YUV2RGB_ENDFUNC |
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} |
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#define RGB_PACK24(blue, red)\ |
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"packuswb %%mm3, %%mm0 \n" /* R0 R2 R4 R6 R1 R3 R5 R7 */\ |
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"packuswb %%mm5, %%mm1 \n" /* B0 B2 B4 B6 B1 B3 B5 B7 */\ |
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"packuswb %%mm7, %%mm2 \n" /* G0 G2 G4 G6 G1 G3 G5 G7 */\ |
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"movq %%mm"red", %%mm3 \n"\ |
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"movq %%mm"blue", %%mm6 \n"\ |
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"psrlq $32, %%mm"red" \n" /* R1 R3 R5 R7 */\ |
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"punpcklbw %%mm2, %%mm3 \n" /* R0 G0 R2 G2 R4 G4 R6 G6 */\ |
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"punpcklbw %%mm"red", %%mm6 \n" /* B0 R1 B2 R3 B4 R5 B6 R7 */\ |
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"movq %%mm3, %%mm5 \n"\ |
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"punpckhbw %%mm"blue", %%mm2 \n" /* G1 B1 G3 B3 G5 B5 G7 B7 */\ |
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"punpcklwd %%mm6, %%mm3 \n" /* R0 G0 B0 R1 R2 G2 B2 R3 */\ |
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"punpckhwd %%mm6, %%mm5 \n" /* R4 G4 B4 R5 R6 G6 B6 R7 */\ |
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RGB_PACK24_B |
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#if HAVE_MMX2 |
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DECLARE_ASM_CONST(8, int16_t, mask1101[4]) = {-1,-1, 0,-1}; |
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DECLARE_ASM_CONST(8, int16_t, mask0010[4]) = { 0, 0,-1, 0}; |
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DECLARE_ASM_CONST(8, int16_t, mask0110[4]) = { 0,-1,-1, 0}; |
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DECLARE_ASM_CONST(8, int16_t, mask1001[4]) = {-1, 0, 0,-1}; |
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DECLARE_ASM_CONST(8, int16_t, mask0100[4]) = { 0,-1, 0, 0}; |
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#undef RGB_PACK24_B |
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#define RGB_PACK24_B\ |
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"pshufw $0xc6, %%mm2, %%mm1 \n"\ |
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"pshufw $0x84, %%mm3, %%mm6 \n"\ |
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"pshufw $0x38, %%mm5, %%mm7 \n"\ |
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"pand "MANGLE(mask1101)", %%mm6 \n" /* R0 G0 B0 R1 -- -- R2 G2 */\ |
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"movq %%mm1, %%mm0 \n"\ |
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"pand "MANGLE(mask0110)", %%mm7 \n" /* -- -- R6 G6 B6 R7 -- -- */\ |
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"movq %%mm1, %%mm2 \n"\ |
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"pand "MANGLE(mask0100)", %%mm1 \n" /* -- -- G3 B3 -- -- -- -- */\ |
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"psrlq $48, %%mm3 \n" /* B2 R3 -- -- -- -- -- -- */\ |
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"pand "MANGLE(mask0010)", %%mm0 \n" /* -- -- -- -- G1 B1 -- -- */\ |
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"psllq $32, %%mm5 \n" /* -- -- -- -- R4 G4 B4 R5 */\ |
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"pand "MANGLE(mask1001)", %%mm2 \n" /* G5 B5 -- -- -- -- G7 B7 */\ |
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"por %%mm3, %%mm1 \n"\ |
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"por %%mm6, %%mm0 \n"\ |
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"por %%mm5, %%mm1 \n"\ |
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"por %%mm7, %%mm2 \n"\ |
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MOVNTQ" %%mm0, (%1) \n"\ |
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MOVNTQ" %%mm1, 8(%1) \n"\ |
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MOVNTQ" %%mm2, 16(%1) \n"\ |
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#else |
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#undef RGB_PACK24_B |
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#define RGB_PACK24_B\ |
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"movd %%mm3, (%1) \n" /* R0 G0 B0 R1 */\ |
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"movd %%mm2, 4(%1) \n" /* G1 B1 */\ |
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"psrlq $32, %%mm3 \n"\ |
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"psrlq $16, %%mm2 \n"\ |
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"movd %%mm3, 6(%1) \n" /* R2 G2 B2 R3 */\ |
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"movd %%mm2, 10(%1) \n" /* G3 B3 */\ |
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"psrlq $16, %%mm2 \n"\ |
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"movd %%mm5, 12(%1) \n" /* R4 G4 B4 R5 */\ |
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"movd %%mm2, 16(%1) \n" /* G5 B5 */\ |
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"psrlq $32, %%mm5 \n"\ |
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"movd %%mm2, 20(%1) \n" /* -- -- G7 B7 */\ |
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"movd %%mm5, 18(%1) \n" /* R6 G6 B6 R7 */\ |
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#endif |
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static inline int RENAME(yuv420_rgb24)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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uint8_t *dst[], int dstStride[]) |
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{ |
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int y, h_size; |
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YUV2RGB_LOOP(3) |
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YUV2RGB_INITIAL_LOAD |
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YUV2RGB |
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RGB_PACK24(REG_BLUE, REG_RED) |
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YUV2RGB_ENDLOOP(3) |
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YUV2RGB_OPERANDS |
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YUV2RGB_ENDFUNC |
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} |
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static inline int RENAME(yuv420_bgr24)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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uint8_t *dst[], int dstStride[]) |
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{ |
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int y, h_size; |
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YUV2RGB_LOOP(3) |
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YUV2RGB_INITIAL_LOAD |
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YUV2RGB |
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RGB_PACK24(REG_RED, REG_BLUE) |
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YUV2RGB_ENDLOOP(3) |
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YUV2RGB_OPERANDS |
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YUV2RGB_ENDFUNC |
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} |
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#define SET_EMPTY_ALPHA \ |
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"pcmpeqd %%mm"REG_ALPHA", %%mm"REG_ALPHA"\n\t" /* set alpha to 0xFF */ \ |
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#define LOAD_ALPHA \ |
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"movq (%6, %0, 2), %%mm"REG_ALPHA"\n\t" \ |
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#define RGB_PACK32(red, green, blue, alpha) \ |
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"movq %%mm"blue", %%mm5\n\t" \ |
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"movq %%mm"red", %%mm6\n\t" \ |
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"punpckhbw %%mm"green", %%mm5\n\t" \ |
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"punpcklbw %%mm"green", %%mm"blue"\n\t" \ |
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"punpckhbw %%mm"alpha", %%mm6\n\t" \ |
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"punpcklbw %%mm"alpha", %%mm"red"\n\t" \ |
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"movq %%mm"blue", %%mm"green"\n\t" \ |
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"movq %%mm5, %%mm"alpha"\n\t" \ |
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"punpcklwd %%mm"red", %%mm"blue"\n\t" \ |
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"punpckhwd %%mm"red", %%mm"green"\n\t" \ |
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"punpcklwd %%mm6, %%mm5\n\t" \ |
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"punpckhwd %%mm6, %%mm"alpha"\n\t" \ |
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MOVNTQ " %%mm"blue", 0(%1)\n\t" \ |
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MOVNTQ " %%mm"green", 8(%1)\n\t" \ |
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MOVNTQ " %%mm5, 16(%1)\n\t" \ |
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MOVNTQ " %%mm"alpha", 24(%1)\n\t" \ |
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static inline int RENAME(yuv420_rgb32)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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uint8_t *dst[], int dstStride[]) |
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{ |
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int y, h_size; |
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YUV2RGB_LOOP(4) |
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YUV2RGB_INITIAL_LOAD |
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YUV2RGB |
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RGB_PACK_INTERLEAVE |
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SET_EMPTY_ALPHA |
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RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA) |
|
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|
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YUV2RGB_ENDLOOP(4) |
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YUV2RGB_OPERANDS |
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YUV2RGB_ENDFUNC |
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} |
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|
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static inline int RENAME(yuva420_rgb32)(SwsContext *c, const uint8_t *src[], |
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int srcStride[], |
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int srcSliceY, int srcSliceH, |
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|
uint8_t *dst[], int dstStride[]) |
|
|
{ |
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|
#if HAVE_7REGS |
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int y, h_size; |
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|
|
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YUV2RGB_LOOP(4) |
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|
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const uint8_t *pa = src[3] + y * srcStride[3]; |
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YUV2RGB_INITIAL_LOAD |
|
|
YUV2RGB |
|
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RGB_PACK_INTERLEAVE |
|
|
LOAD_ALPHA |
|
|
RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA) |
|
|
|
|
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YUV2RGB_ENDLOOP(4) |
|
|
YUV2RGB_OPERANDS_ALPHA |
|
|
YUV2RGB_ENDFUNC |
|
|
#endif |
|
|
} |
|
|
|
|
|
static inline int RENAME(yuv420_bgr32)(SwsContext *c, const uint8_t *src[], |
|
|
int srcStride[], |
|
|
int srcSliceY, int srcSliceH, |
|
|
uint8_t *dst[], int dstStride[]) |
|
|
{ |
|
|
int y, h_size; |
|
|
|
|
|
YUV2RGB_LOOP(4) |
|
|
|
|
|
YUV2RGB_INITIAL_LOAD |
|
|
YUV2RGB |
|
|
RGB_PACK_INTERLEAVE |
|
|
SET_EMPTY_ALPHA |
|
|
RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA) |
|
|
|
|
|
YUV2RGB_ENDLOOP(4) |
|
|
YUV2RGB_OPERANDS |
|
|
YUV2RGB_ENDFUNC |
|
|
} |
|
|
|
|
|
static inline int RENAME(yuva420_bgr32)(SwsContext *c, const uint8_t *src[], |
|
|
int srcStride[], |
|
|
int srcSliceY, int srcSliceH, |
|
|
uint8_t *dst[], int dstStride[]) |
|
|
{ |
|
|
#if HAVE_7REGS |
|
|
int y, h_size; |
|
|
|
|
|
YUV2RGB_LOOP(4) |
|
|
|
|
|
const uint8_t *pa = src[3] + y * srcStride[3]; |
|
|
YUV2RGB_INITIAL_LOAD |
|
|
YUV2RGB |
|
|
RGB_PACK_INTERLEAVE |
|
|
LOAD_ALPHA |
|
|
RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA) |
|
|
|
|
|
YUV2RGB_ENDLOOP(4) |
|
|
YUV2RGB_OPERANDS_ALPHA |
|
|
YUV2RGB_ENDFUNC |
|
|
#endif |
|
|
}
|
|
|
|
