/* * software YUV to RGB converter * * Copyright (C) 2001-2007 Michael Niedermayer * (c) 2010 Konstantin Shishkov * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include "libavutil/x86/asm.h" #include "libswscale/swscale_internal.h" #undef MOVNTQ #undef EMMS #undef SFENCE #if COMPILE_TEMPLATE_MMXEXT #define MOVNTQ "movntq" #define SFENCE "sfence" #else #define MOVNTQ "movq" #define SFENCE " # nop" #endif #define REG_BLUE "0" #define REG_RED "1" #define REG_GREEN "2" #define REG_ALPHA "3" #define YUV2RGB_LOOP(depth) \ h_size = (c->dstW + 7) & ~7; \ if (h_size * depth > FFABS(dstStride[0])) \ h_size -= 8; \ \ if (c->srcFormat == AV_PIX_FMT_YUV422P) { \ srcStride[1] *= 2; \ srcStride[2] *= 2; \ } \ \ __asm__ volatile ("pxor %mm4, %mm4\n\t"); \ for (y = 0; y < srcSliceH; y++) { \ uint8_t *image = dst[0] + (y + srcSliceY) * dstStride[0]; \ const uint8_t *py = src[0] + y * srcStride[0]; \ const uint8_t *pu = src[1] + (y >> 1) * srcStride[1]; \ const uint8_t *pv = src[2] + (y >> 1) * srcStride[2]; \ x86_reg index = -h_size / 2; \ #define YUV2RGB_INITIAL_LOAD \ __asm__ volatile ( \ "movq (%5, %0, 2), %%mm6\n\t" \ "movd (%2, %0), %%mm0\n\t" \ "movd (%3, %0), %%mm1\n\t" \ "1: \n\t" \ /* YUV2RGB core * Conversion is performed in usual way: * R = Y' * Ycoef + Vred * V' * G = Y' * Ycoef + Vgreen * V' + Ugreen * U' * B = Y' * Ycoef + Ublue * U' * * where X' = X * 8 - Xoffset (multiplication is performed to increase * precision a bit). * Since it operates in YUV420 colorspace, Y component is additionally * split into Y1 and Y2 for even and odd pixels. * * Input: * mm0 - U (4 elems), mm1 - V (4 elems), mm6 - Y (8 elems), mm4 - zero register * Output: * mm1 - R, mm2 - G, mm0 - B */ #define YUV2RGB \ /* convert Y, U, V into Y1', Y2', U', V' */ \ "movq %%mm6, %%mm7\n\t" \ "punpcklbw %%mm4, %%mm0\n\t" \ "punpcklbw %%mm4, %%mm1\n\t" \ "pand "MANGLE(mmx_00ffw)", %%mm6\n\t" \ "psrlw $8, %%mm7\n\t" \ "psllw $3, %%mm0\n\t" \ "psllw $3, %%mm1\n\t" \ "psllw $3, %%mm6\n\t" \ "psllw $3, %%mm7\n\t" \ "psubsw "U_OFFSET"(%4), %%mm0\n\t" \ "psubsw "V_OFFSET"(%4), %%mm1\n\t" \ "psubw "Y_OFFSET"(%4), %%mm6\n\t" \ "psubw "Y_OFFSET"(%4), %%mm7\n\t" \ \ /* multiply by coefficients */ \ "movq %%mm0, %%mm2\n\t" \ "movq %%mm1, %%mm3\n\t" \ "pmulhw "UG_COEFF"(%4), %%mm2\n\t" \ "pmulhw "VG_COEFF"(%4), %%mm3\n\t" \ "pmulhw "Y_COEFF" (%4), %%mm6\n\t" \ "pmulhw "Y_COEFF" (%4), %%mm7\n\t" \ "pmulhw "UB_COEFF"(%4), %%mm0\n\t" \ "pmulhw "VR_COEFF"(%4), %%mm1\n\t" \ "paddsw %%mm3, %%mm2\n\t" \ /* now: mm0 = UB, mm1 = VR, mm2 = CG */ \ /* mm6 = Y1, mm7 = Y2 */ \ \ /* produce RGB */ \ "movq %%mm7, %%mm3\n\t" \ "movq %%mm7, %%mm5\n\t" \ "paddsw %%mm0, %%mm3\n\t" \ "paddsw %%mm1, %%mm5\n\t" \ "paddsw %%mm2, %%mm7\n\t" \ "paddsw %%mm6, %%mm0\n\t" \ "paddsw %%mm6, %%mm1\n\t" \ "paddsw %%mm6, %%mm2\n\t" \ #define RGB_PACK_INTERLEAVE \ /* pack and interleave even/odd pixels */ \ "packuswb %%mm1, %%mm0\n\t" \ "packuswb %%mm5, %%mm3\n\t" \ "packuswb %%mm2, %%mm2\n\t" \ "movq %%mm0, %%mm1\n\n" \ "packuswb %%mm7, %%mm7\n\t" \ "punpcklbw %%mm3, %%mm0\n\t" \ "punpckhbw %%mm3, %%mm1\n\t" \ "punpcklbw %%mm7, %%mm2\n\t" \ #define YUV2RGB_ENDLOOP(depth) \ "movq 8 (%5, %0, 2), %%mm6\n\t" \ "movd 4 (%3, %0), %%mm1\n\t" \ "movd 4 (%2, %0), %%mm0\n\t" \ "add $"AV_STRINGIFY(depth * 8)", %1\n\t" \ "add $4, %0\n\t" \ "js 1b\n\t" \ #define YUV2RGB_OPERANDS \ : "+r" (index), "+r" (image) \ : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \ "r" (py - 2*index) \ ); \ } \ #define YUV2RGB_OPERANDS_ALPHA \ : "+r" (index), "+r" (image) \ : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \ "r" (py - 2*index), "r" (pa - 2*index) \ ); \ } \ #define YUV2RGB_ENDFUNC \ __asm__ volatile (SFENCE"\n\t" \ "emms \n\t"); \ return srcSliceH; \ #define IF0(x) #define IF1(x) x #define RGB_PACK16(gmask, is15) \ "pand "MANGLE(mmx_redmask)", %%mm0\n\t" \ "pand "MANGLE(mmx_redmask)", %%mm1\n\t" \ "movq %%mm2, %%mm3\n\t" \ "psllw $"AV_STRINGIFY(3-is15)", %%mm2\n\t" \ "psrlw $"AV_STRINGIFY(5+is15)", %%mm3\n\t" \ "psrlw $3, %%mm0\n\t" \ IF##is15("psrlw $1, %%mm1\n\t") \ "pand "MANGLE(pb_e0)", %%mm2\n\t" \ "pand "MANGLE(gmask)", %%mm3\n\t" \ "por %%mm2, %%mm0\n\t" \ "por %%mm3, %%mm1\n\t" \ "movq %%mm0, %%mm2\n\t" \ "punpcklbw %%mm1, %%mm0\n\t" \ "punpckhbw %%mm1, %%mm2\n\t" \ MOVNTQ " %%mm0, (%1)\n\t" \ MOVNTQ " %%mm2, 8(%1)\n\t" \ #define DITHER_RGB \ "paddusb "BLUE_DITHER"(%4), %%mm0\n\t" \ "paddusb "GREEN_DITHER"(%4), %%mm2\n\t" \ "paddusb "RED_DITHER"(%4), %%mm1\n\t" \ #if !COMPILE_TEMPLATE_MMXEXT static inline int RENAME(yuv420_rgb15)(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[]) { int y, h_size; YUV2RGB_LOOP(2) #ifdef DITHER1XBPP c->blueDither = ff_dither8[y & 1]; c->greenDither = ff_dither8[y & 1]; c->redDither = ff_dither8[(y + 1) & 1]; #endif YUV2RGB_INITIAL_LOAD YUV2RGB RGB_PACK_INTERLEAVE #ifdef DITHER1XBPP DITHER_RGB #endif RGB_PACK16(pb_03, 1) YUV2RGB_ENDLOOP(2) YUV2RGB_OPERANDS YUV2RGB_ENDFUNC } static inline int RENAME(yuv420_rgb16)(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[]) { int y, h_size; YUV2RGB_LOOP(2) #ifdef DITHER1XBPP c->blueDither = ff_dither8[y & 1]; c->greenDither = ff_dither4[y & 1]; c->redDither = ff_dither8[(y + 1) & 1]; #endif YUV2RGB_INITIAL_LOAD YUV2RGB RGB_PACK_INTERLEAVE #ifdef DITHER1XBPP DITHER_RGB #endif RGB_PACK16(pb_07, 0) YUV2RGB_ENDLOOP(2) YUV2RGB_OPERANDS YUV2RGB_ENDFUNC } #endif /* !COMPILE_TEMPLATE_MMXEXT */ #define RGB_PACK24(blue, red)\ "packuswb %%mm3, %%mm0 \n" /* R0 R2 R4 R6 R1 R3 R5 R7 */\ "packuswb %%mm5, %%mm1 \n" /* B0 B2 B4 B6 B1 B3 B5 B7 */\ "packuswb %%mm7, %%mm2 \n" /* G0 G2 G4 G6 G1 G3 G5 G7 */\ "movq %%mm"red", %%mm3 \n"\ "movq %%mm"blue", %%mm6 \n"\ "psrlq $32, %%mm"red" \n" /* R1 R3 R5 R7 */\ "punpcklbw %%mm2, %%mm3 \n" /* R0 G0 R2 G2 R4 G4 R6 G6 */\ "punpcklbw %%mm"red", %%mm6 \n" /* B0 R1 B2 R3 B4 R5 B6 R7 */\ "movq %%mm3, %%mm5 \n"\ "punpckhbw %%mm"blue", %%mm2 \n" /* G1 B1 G3 B3 G5 B5 G7 B7 */\ "punpcklwd %%mm6, %%mm3 \n" /* R0 G0 B0 R1 R2 G2 B2 R3 */\ "punpckhwd %%mm6, %%mm5 \n" /* R4 G4 B4 R5 R6 G6 B6 R7 */\ RGB_PACK24_B #if COMPILE_TEMPLATE_MMXEXT DECLARE_ASM_CONST(8, int16_t, mask1101[4]) = {-1,-1, 0,-1}; DECLARE_ASM_CONST(8, int16_t, mask0010[4]) = { 0, 0,-1, 0}; DECLARE_ASM_CONST(8, int16_t, mask0110[4]) = { 0,-1,-1, 0}; DECLARE_ASM_CONST(8, int16_t, mask1001[4]) = {-1, 0, 0,-1}; DECLARE_ASM_CONST(8, int16_t, mask0100[4]) = { 0,-1, 0, 0}; #undef RGB_PACK24_B #define RGB_PACK24_B\ "pshufw $0xc6, %%mm2, %%mm1 \n"\ "pshufw $0x84, %%mm3, %%mm6 \n"\ "pshufw $0x38, %%mm5, %%mm7 \n"\ "pand "MANGLE(mask1101)", %%mm6 \n" /* R0 G0 B0 R1 -- -- R2 G2 */\ "movq %%mm1, %%mm0 \n"\ "pand "MANGLE(mask0110)", %%mm7 \n" /* -- -- R6 G6 B6 R7 -- -- */\ "movq %%mm1, %%mm2 \n"\ "pand "MANGLE(mask0100)", %%mm1 \n" /* -- -- G3 B3 -- -- -- -- */\ "psrlq $48, %%mm3 \n" /* B2 R3 -- -- -- -- -- -- */\ "pand "MANGLE(mask0010)", %%mm0 \n" /* -- -- -- -- G1 B1 -- -- */\ "psllq $32, %%mm5 \n" /* -- -- -- -- R4 G4 B4 R5 */\ "pand "MANGLE(mask1001)", %%mm2 \n" /* G5 B5 -- -- -- -- G7 B7 */\ "por %%mm3, %%mm1 \n"\ "por %%mm6, %%mm0 \n"\ "por %%mm5, %%mm1 \n"\ "por %%mm7, %%mm2 \n"\ MOVNTQ" %%mm0, (%1) \n"\ MOVNTQ" %%mm1, 8(%1) \n"\ MOVNTQ" %%mm2, 16(%1) \n"\ #else #undef RGB_PACK24_B #define RGB_PACK24_B\ "movd %%mm3, (%1) \n" /* R0 G0 B0 R1 */\ "movd %%mm2, 4(%1) \n" /* G1 B1 */\ "psrlq $32, %%mm3 \n"\ "psrlq $16, %%mm2 \n"\ "movd %%mm3, 6(%1) \n" /* R2 G2 B2 R3 */\ "movd %%mm2, 10(%1) \n" /* G3 B3 */\ "psrlq $16, %%mm2 \n"\ "movd %%mm5, 12(%1) \n" /* R4 G4 B4 R5 */\ "movd %%mm2, 16(%1) \n" /* G5 B5 */\ "psrlq $32, %%mm5 \n"\ "movd %%mm2, 20(%1) \n" /* -- -- G7 B7 */\ "movd %%mm5, 18(%1) \n" /* R6 G6 B6 R7 */\ #endif static inline int RENAME(yuv420_rgb24)(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[]) { int y, h_size; YUV2RGB_LOOP(3) YUV2RGB_INITIAL_LOAD YUV2RGB RGB_PACK24(REG_BLUE, REG_RED) YUV2RGB_ENDLOOP(3) YUV2RGB_OPERANDS YUV2RGB_ENDFUNC } static inline int RENAME(yuv420_bgr24)(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[]) { int y, h_size; YUV2RGB_LOOP(3) YUV2RGB_INITIAL_LOAD YUV2RGB RGB_PACK24(REG_RED, REG_BLUE) YUV2RGB_ENDLOOP(3) YUV2RGB_OPERANDS YUV2RGB_ENDFUNC } #define SET_EMPTY_ALPHA \ "pcmpeqd %%mm"REG_ALPHA", %%mm"REG_ALPHA"\n\t" /* set alpha to 0xFF */ \ #define LOAD_ALPHA \ "movq (%6, %0, 2), %%mm"REG_ALPHA"\n\t" \ #define RGB_PACK32(red, green, blue, alpha) \ "movq %%mm"blue", %%mm5\n\t" \ "movq %%mm"red", %%mm6\n\t" \ "punpckhbw %%mm"green", %%mm5\n\t" \ "punpcklbw %%mm"green", %%mm"blue"\n\t" \ "punpckhbw %%mm"alpha", %%mm6\n\t" \ "punpcklbw %%mm"alpha", %%mm"red"\n\t" \ "movq %%mm"blue", %%mm"green"\n\t" \ "movq %%mm5, %%mm"alpha"\n\t" \ "punpcklwd %%mm"red", %%mm"blue"\n\t" \ "punpckhwd %%mm"red", %%mm"green"\n\t" \ "punpcklwd %%mm6, %%mm5\n\t" \ "punpckhwd %%mm6, %%mm"alpha"\n\t" \ MOVNTQ " %%mm"blue", 0(%1)\n\t" \ MOVNTQ " %%mm"green", 8(%1)\n\t" \ MOVNTQ " %%mm5, 16(%1)\n\t" \ MOVNTQ " %%mm"alpha", 24(%1)\n\t" \ #if !COMPILE_TEMPLATE_MMXEXT static inline int RENAME(yuv420_rgb32)(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_RED, REG_GREEN, REG_BLUE, REG_ALPHA) YUV2RGB_ENDLOOP(4) YUV2RGB_OPERANDS YUV2RGB_ENDFUNC } #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA static inline int RENAME(yuva420_rgb32)(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[]) { 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_RED, REG_GREEN, REG_BLUE, REG_ALPHA) 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 } #if HAVE_7REGS && CONFIG_SWSCALE_ALPHA static inline int RENAME(yuva420_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) 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 #endif /* !COMPILE_TEMPLATE_MMXEXT */