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ffmpeg / libswscale / yuv2rgb_template.c @ 88e2a9ae

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/*
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 * yuv2rgb_mmx.c, software YUV to RGB converter with Intel MMX "technology"
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 *
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 * Copyright (C) 2000, Silicon Integrated System Corp.
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 *
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 * Author: Olie Lho <ollie@sis.com.tw>
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 *
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 * 15,24 bpp and dithering from Michael Niedermayer (michaelni@gmx.at)
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 * MMX/MMX2 Template stuff from Michael Niedermayer (needed for fast movntq support)
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 * context / deglobalize stuff by Michael Niedermayer
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 *
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 * This file is part of mpeg2dec, a free MPEG-2 video decoder
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 *
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 * mpeg2dec is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2, or (at your option)
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 * any later version.
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 *
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 * mpeg2dec 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
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with mpeg2dec; 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
32

    
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#ifdef HAVE_3DNOW
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/* On K6 femms is faster than emms. On K7 femms is directly mapped on 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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#ifdef 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 YUV2RGB \
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    /* Do the multiply part of the conversion for even and odd pixels,
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       register usage:
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       mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,
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       mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,
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       mm6 -> Y even, mm7 -> Y odd */\
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    /* convert the chroma part */\
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    "punpcklbw %%mm4, %%mm0;" /* scatter 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \
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    "punpcklbw %%mm4, %%mm1;" /* scatter 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \
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\
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    "psllw $3, %%mm0;" /* Promote precision */ \
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    "psllw $3, %%mm1;" /* Promote precision */ \
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\
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    "psubsw "U_OFFSET"(%4), %%mm0;" /* Cb -= 128 */ \
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    "psubsw "V_OFFSET"(%4), %%mm1;" /* Cr -= 128 */ \
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\
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    "movq %%mm0, %%mm2;" /* Copy 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \
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    "movq %%mm1, %%mm3;" /* Copy 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \
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\
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    "pmulhw "UG_COEFF"(%4), %%mm2;" /* Mul Cb with green coeff -> Cb green */ \
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    "pmulhw "VG_COEFF"(%4), %%mm3;" /* Mul Cr with green coeff -> Cr green */ \
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\
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    "pmulhw "UB_COEFF"(%4), %%mm0;" /* Mul Cb -> Cblue 00 b3 00 b2 00 b1 00 b0 */\
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    "pmulhw "VR_COEFF"(%4), %%mm1;" /* Mul Cr -> Cred 00 r3 00 r2 00 r1 00 r0 */\
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\
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    "paddsw %%mm3, %%mm2;" /* Cb green + Cr green -> Cgreen */\
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\
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    /* convert the luma part */\
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    "movq %%mm6, %%mm7;" /* Copy 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */\
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    "pand "MANGLE(mmx_00ffw)", %%mm6;" /* get Y even 00 Y6 00 Y4 00 Y2 00 Y0 */\
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\
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    "psrlw $8, %%mm7;" /* get Y odd 00 Y7 00 Y5 00 Y3 00 Y1 */\
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\
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    "psllw $3, %%mm6;" /* Promote precision */\
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    "psllw $3, %%mm7;" /* Promote precision */\
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\
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    "psubw "Y_OFFSET"(%4), %%mm6;" /* Y -= 16 */\
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    "psubw "Y_OFFSET"(%4), %%mm7;" /* Y -= 16 */\
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\
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    "pmulhw "Y_COEFF"(%4), %%mm6;" /* Mul 4 Y even 00 y6 00 y4 00 y2 00 y0 */\
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    "pmulhw "Y_COEFF"(%4), %%mm7;" /* Mul 4 Y odd 00 y7 00 y5 00 y3 00 y1 */\
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\
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    /* Do the addition part of the conversion for even and odd pixels,
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       register usage:
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       mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,
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       mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,
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       mm6 -> Y even, mm7 -> Y odd */\
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    "movq %%mm0, %%mm3;" /* Copy Cblue */\
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    "movq %%mm1, %%mm4;" /* Copy Cred */\
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    "movq %%mm2, %%mm5;" /* Copy Cgreen */\
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\
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    "paddsw %%mm6, %%mm0;" /* Y even + Cblue 00 B6 00 B4 00 B2 00 B0 */\
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    "paddsw %%mm7, %%mm3;" /* Y odd + Cblue 00 B7 00 B5 00 B3 00 B1 */\
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\
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    "paddsw %%mm6, %%mm1;" /* Y even + Cred 00 R6 00 R4 00 R2 00 R0 */\
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    "paddsw %%mm7, %%mm4;" /* Y odd + Cred 00 R7 00 R5 00 R3 00 R1 */\
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\
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    "paddsw %%mm6, %%mm2;" /* Y even + Cgreen 00 G6 00 G4 00 G2 00 G0 */\
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    "paddsw %%mm7, %%mm5;" /* Y odd + Cgreen 00 G7 00 G5 00 G3 00 G1 */\
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\
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    /* Limit RGB even to 0..255 */\
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    "packuswb %%mm0, %%mm0;" /* B6 B4 B2 B0  B6 B4 B2 B0 */\
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    "packuswb %%mm1, %%mm1;" /* R6 R4 R2 R0  R6 R4 R2 R0 */\
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    "packuswb %%mm2, %%mm2;" /* G6 G4 G2 G0  G6 G4 G2 G0 */\
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\
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    /* Limit RGB odd to 0..255 */\
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    "packuswb %%mm3, %%mm3;" /* B7 B5 B3 B1  B7 B5 B3 B1 */\
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    "packuswb %%mm4, %%mm4;" /* R7 R5 R3 R1  R7 R5 R3 R1 */\
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    "packuswb %%mm5, %%mm5;" /* G7 G5 G3 G1  G7 G5 G3 G1 */\
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\
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    /* Interleave RGB even and odd */\
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    "punpcklbw %%mm3, %%mm0;" /* B7 B6 B5 B4 B3 B2 B1 B0 */\
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    "punpcklbw %%mm4, %%mm1;" /* R7 R6 R5 R4 R3 R2 R1 R0 */\
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    "punpcklbw %%mm5, %%mm2;" /* G7 G6 G5 G4 G3 G2 G1 G0 */\
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123

    
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static inline int RENAME(yuv420_rgb16)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
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                                       int srcSliceH, uint8_t* dst[], int dstStride[]){
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    int y, h_size;
127

    
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    if(c->srcFormat == PIX_FMT_YUV422P){
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        srcStride[1] *= 2;
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        srcStride[2] *= 2;
131
    }
132

    
133
    h_size= (c->dstW+7)&~7;
134
    if(h_size*2 > FFABS(dstStride[0])) h_size-=8;
135

    
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    asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
137
    //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&c->blueDither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],
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    //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);
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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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        uint8_t *py = src[0] + y*srcStride[0];
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        uint8_t *pu = src[1] + (y>>1)*srcStride[1];
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        uint8_t *pv = src[2] + (y>>1)*srcStride[2];
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        long index= -h_size/2;
145

    
146
        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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        /* This MMX assembly code deals with a SINGLE scan line at a time,
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         * it converts 8 pixels in each iteration. */
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        asm volatile (
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        /* load data for start of next scan line */
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        "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
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        "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
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        "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
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        //".balign 16     \n\t"
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        "1:             \n\t"
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        /* No speed difference on my p3@500 with prefetch,
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         * if it is faster for anyone with -benchmark then tell me.
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        PREFETCH" 64(%0) \n\t"
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        PREFETCH" 64(%1) \n\t"
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        PREFETCH" 64(%2) \n\t"
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        */
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YUV2RGB
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166
#ifdef DITHER1XBPP
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        "paddusb "BLUE_DITHER"(%4), %%mm0;"
168
        "paddusb "GREEN_DITHER"(%4), %%mm2;"
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        "paddusb "RED_DITHER"(%4), %%mm1;"
170
#endif
171
        /* mask unneeded bits off */
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        "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
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        "pand "MANGLE(mmx_grnmask)", %%mm2;" /* g7g6g5g4 g3g2_0_0 g7g6g5g4 g3g2_0_0 */
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        "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
175

    
176
        "psrlw   $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
177
        "pxor %%mm4, %%mm4;" /* zero mm4 */
178

    
179
        "movq %%mm0, %%mm5;" /* Copy B7-B0 */
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        "movq %%mm2, %%mm7;" /* Copy G7-G0 */
181

    
182
        /* convert RGB24 plane to RGB16 pack for pixel 0-3 */
183
        "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
184
        "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
185

    
186
        "psllw  $3, %%mm2;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
187
        "por %%mm2, %%mm0;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
188

    
189
        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
190
        MOVNTQ "      %%mm0, (%1);" /* store pixel 0-3 */
191

    
192
        /* convert RGB24 plane to RGB16 pack for pixel 0-3 */
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        "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */
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        "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
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196
        "psllw        $3, %%mm7;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */
197
        "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
198

    
199
        "por       %%mm7, %%mm5;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */
200
        "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
201

    
202
        MOVNTQ "   %%mm5, 8 (%1);" /* store pixel 4-7 */
203

    
204
        "add $16, %1    \n\t"
205
        "add  $4, %0    \n\t"
206
        " js  1b        \n\t"
207

    
208
        : "+r" (index), "+r" (image)
209
        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
210
        );
211
    }
212

    
213
    asm volatile (EMMS);
214

    
215
    return srcSliceH;
216
}
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218
static inline int RENAME(yuv420_rgb15)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
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                                       int srcSliceH, uint8_t* dst[], int dstStride[]){
220
    int y, h_size;
221

    
222
    if(c->srcFormat == PIX_FMT_YUV422P){
223
        srcStride[1] *= 2;
224
        srcStride[2] *= 2;
225
    }
226

    
227
    h_size= (c->dstW+7)&~7;
228
    if(h_size*2 > FFABS(dstStride[0])) h_size-=8;
229

    
230
    asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
231
    //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&c->blueDither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],
232
    //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);
233
    for (y= 0; y<srcSliceH; y++ ) {
234
        uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
235
        uint8_t *py = src[0] + y*srcStride[0];
236
        uint8_t *pu = src[1] + (y>>1)*srcStride[1];
237
        uint8_t *pv = src[2] + (y>>1)*srcStride[2];
238
        long index= -h_size/2;
239

    
240
        c->blueDither= ff_dither8[y&1];
241
        c->greenDither= ff_dither8[y&1];
242
        c->redDither= ff_dither8[(y+1)&1];
243
        /* This MMX assembly code deals with a SINGLE scan line at a time,
244
         * it converts 8 pixels in each iteration. */
245
        asm volatile (
246
        /* load data for start of next scan line */
247
        "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
248
        "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
249
        "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
250
        //".balign 16     \n\t"
251
        "1:             \n\t"
252
YUV2RGB
253

    
254
#ifdef DITHER1XBPP
255
        "paddusb "BLUE_DITHER"(%4), %%mm0  \n\t"
256
        "paddusb "GREEN_DITHER"(%4), %%mm2  \n\t"
257
        "paddusb "RED_DITHER"(%4), %%mm1  \n\t"
258
#endif
259

    
260
        /* mask unneeded bits off */
261
        "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */
262
        "pand "MANGLE(mmx_redmask)", %%mm2;" /* g7g6g5g4 g3_0_0_0 g7g6g5g4 g3_0_0_0 */
263
        "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */
264

    
265
        "psrlw   $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */
266
        "psrlw   $1, %%mm1;" /* 0_r7r6r5  r4r3_0_0 0_r7r6r5 r4r3_0_0 */
267
        "pxor %%mm4, %%mm4;" /* zero mm4 */
268

    
269
        "movq %%mm0, %%mm5;" /* Copy B7-B0 */
270
        "movq %%mm2, %%mm7;" /* Copy G7-G0 */
271

    
272
        /* convert RGB24 plane to RGB16 pack for pixel 0-3 */
273
        "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3_0_0_0 */
274
        "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
275

    
276
        "psllw  $2, %%mm2;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */
277
        "por %%mm2, %%mm0;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */
278

    
279
        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
280
        MOVNTQ "      %%mm0, (%1);"  /* store pixel 0-3 */
281

    
282
        /* convert RGB24 plane to RGB16 pack for pixel 0-3 */
283
        "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 0_g7g6g5 g4g3_0_0 */
284
        "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */
285

    
286
        "psllw        $2, %%mm7;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */
287
        "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
288

    
289
        "por       %%mm7, %%mm5;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */
290
        "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
291

    
292
        MOVNTQ " %%mm5, 8 (%1);" /* store pixel 4-7 */
293

    
294
        "add $16, %1            \n\t"
295
        "add $4, %0             \n\t"
296
        " js 1b                 \n\t"
297
        : "+r" (index), "+r" (image)
298
        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
299
        );
300
    }
301

    
302
    asm volatile (EMMS);
303
    return srcSliceH;
304
}
305

    
306
static inline int RENAME(yuv420_rgb24)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
307
                                       int srcSliceH, uint8_t* dst[], int dstStride[]){
308
    int y, h_size;
309

    
310
    if(c->srcFormat == PIX_FMT_YUV422P){
311
        srcStride[1] *= 2;
312
        srcStride[2] *= 2;
313
    }
314

    
315
    h_size= (c->dstW+7)&~7;
316
    if(h_size*3 > FFABS(dstStride[0])) h_size-=8;
317

    
318
    asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
319

    
320
    for (y= 0; y<srcSliceH; y++ ) {
321
        uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
322
        uint8_t *py = src[0] + y*srcStride[0];
323
        uint8_t *pu = src[1] + (y>>1)*srcStride[1];
324
        uint8_t *pv = src[2] + (y>>1)*srcStride[2];
325
        long index= -h_size/2;
326

    
327
        /* This MMX assembly code deals with a SINGLE scan line at a time,
328
         * it converts 8 pixels in each iteration. */
329
        asm volatile (
330
        /* load data for start of next scan line */
331
        "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
332
        "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
333
        "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
334
        //".balign 16     \n\t"
335
        "1:             \n\t"
336
YUV2RGB
337
        /* mm0=B, %%mm2=G, %%mm1=R */
338
#ifdef HAVE_MMX2
339
        "movq "MANGLE(ff_M24A)", %%mm4     \n\t"
340
        "movq "MANGLE(ff_M24C)", %%mm7     \n\t"
341
        "pshufw $0x50, %%mm0, %%mm5     \n\t" /* B3 B2 B3 B2  B1 B0 B1 B0 */
342
        "pshufw $0x50, %%mm2, %%mm3     \n\t" /* G3 G2 G3 G2  G1 G0 G1 G0 */
343
        "pshufw $0x00, %%mm1, %%mm6     \n\t" /* R1 R0 R1 R0  R1 R0 R1 R0 */
344

    
345
        "pand   %%mm4, %%mm5            \n\t" /*    B2        B1       B0 */
346
        "pand   %%mm4, %%mm3            \n\t" /*    G2        G1       G0 */
347
        "pand   %%mm7, %%mm6            \n\t" /*       R1        R0       */
348

    
349
        "psllq     $8, %%mm3            \n\t" /* G2        G1       G0    */
350
        "por    %%mm5, %%mm6            \n\t"
351
        "por    %%mm3, %%mm6            \n\t"
352
        MOVNTQ" %%mm6, (%1)             \n\t"
353

    
354
        "psrlq     $8, %%mm2            \n\t" /* 00 G7 G6 G5  G4 G3 G2 G1 */
355
        "pshufw $0xA5, %%mm0, %%mm5     \n\t" /* B5 B4 B5 B4  B3 B2 B3 B2 */
356
        "pshufw $0x55, %%mm2, %%mm3     \n\t" /* G4 G3 G4 G3  G4 G3 G4 G3 */
357
        "pshufw $0xA5, %%mm1, %%mm6     \n\t" /* R5 R4 R5 R4  R3 R2 R3 R2 */
358

    
359
        "pand "MANGLE(ff_M24B)", %%mm5     \n\t" /* B5       B4        B3    */
360
        "pand          %%mm7, %%mm3     \n\t" /*       G4        G3       */
361
        "pand          %%mm4, %%mm6     \n\t" /*    R4        R3       R2 */
362

    
363
        "por    %%mm5, %%mm3            \n\t" /* B5    G4 B4     G3 B3    */
364
        "por    %%mm3, %%mm6            \n\t"
365
        MOVNTQ" %%mm6, 8(%1)            \n\t"
366

    
367
        "pshufw $0xFF, %%mm0, %%mm5     \n\t" /* B7 B6 B7 B6  B7 B6 B6 B7 */
368
        "pshufw $0xFA, %%mm2, %%mm3     \n\t" /* 00 G7 00 G7  G6 G5 G6 G5 */
369
        "pshufw $0xFA, %%mm1, %%mm6     \n\t" /* R7 R6 R7 R6  R5 R4 R5 R4 */
370
        "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
371

    
372
        "pand          %%mm7, %%mm5     \n\t" /*       B7        B6       */
373
        "pand          %%mm4, %%mm3     \n\t" /*    G7        G6       G5 */
374
        "pand "MANGLE(ff_M24B)", %%mm6     \n\t" /* R7       R6        R5    */
375
        "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
376
\
377
        "por          %%mm5, %%mm3      \n\t"
378
        "por          %%mm3, %%mm6      \n\t"
379
        MOVNTQ"       %%mm6, 16(%1)     \n\t"
380
        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
381
        "pxor         %%mm4, %%mm4      \n\t"
382

    
383
#else
384

    
385
        "pxor      %%mm4, %%mm4     \n\t"
386
        "movq      %%mm0, %%mm5     \n\t" /* B */
387
        "movq      %%mm1, %%mm6     \n\t" /* R */
388
        "punpcklbw %%mm2, %%mm0     \n\t" /* GBGBGBGB 0 */
389
        "punpcklbw %%mm4, %%mm1     \n\t" /* 0R0R0R0R 0 */
390
        "punpckhbw %%mm2, %%mm5     \n\t" /* GBGBGBGB 2 */
391
        "punpckhbw %%mm4, %%mm6     \n\t" /* 0R0R0R0R 2 */
392
        "movq      %%mm0, %%mm7     \n\t" /* GBGBGBGB 0 */
393
        "movq      %%mm5, %%mm3     \n\t" /* GBGBGBGB 2 */
394
        "punpcklwd %%mm1, %%mm7     \n\t" /* 0RGB0RGB 0 */
395
        "punpckhwd %%mm1, %%mm0     \n\t" /* 0RGB0RGB 1 */
396
        "punpcklwd %%mm6, %%mm5     \n\t" /* 0RGB0RGB 2 */
397
        "punpckhwd %%mm6, %%mm3     \n\t" /* 0RGB0RGB 3 */
398

    
399
        "movq      %%mm7, %%mm2     \n\t" /* 0RGB0RGB 0 */
400
        "movq      %%mm0, %%mm6     \n\t" /* 0RGB0RGB 1 */
401
        "movq      %%mm5, %%mm1     \n\t" /* 0RGB0RGB 2 */
402
        "movq      %%mm3, %%mm4     \n\t" /* 0RGB0RGB 3 */
403

    
404
        "psllq       $40, %%mm7     \n\t" /* RGB00000 0 */
405
        "psllq       $40, %%mm0     \n\t" /* RGB00000 1 */
406
        "psllq       $40, %%mm5     \n\t" /* RGB00000 2 */
407
        "psllq       $40, %%mm3     \n\t" /* RGB00000 3 */
408

    
409
        "punpckhdq %%mm2, %%mm7     \n\t" /* 0RGBRGB0 0 */
410
        "punpckhdq %%mm6, %%mm0     \n\t" /* 0RGBRGB0 1 */
411
        "punpckhdq %%mm1, %%mm5     \n\t" /* 0RGBRGB0 2 */
412
        "punpckhdq %%mm4, %%mm3     \n\t" /* 0RGBRGB0 3 */
413

    
414
        "psrlq        $8, %%mm7     \n\t" /* 00RGBRGB 0 */
415
        "movq      %%mm0, %%mm6     \n\t" /* 0RGBRGB0 1 */
416
        "psllq       $40, %%mm0     \n\t" /* GB000000 1 */
417
        "por       %%mm0, %%mm7     \n\t" /* GBRGBRGB 0 */
418
        MOVNTQ"    %%mm7, (%1)      \n\t"
419

    
420
        "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
421

    
422
        "psrlq       $24, %%mm6     \n\t" /* 0000RGBR 1 */
423
        "movq      %%mm5, %%mm1     \n\t" /* 0RGBRGB0 2 */
424
        "psllq       $24, %%mm5     \n\t" /* BRGB0000 2 */
425
        "por       %%mm5, %%mm6     \n\t" /* BRGBRGBR 1 */
426
        MOVNTQ"    %%mm6, 8(%1)     \n\t"
427

    
428
        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
429

    
430
        "psrlq       $40, %%mm1     \n\t" /* 000000RG 2 */
431
        "psllq        $8, %%mm3     \n\t" /* RGBRGB00 3 */
432
        "por       %%mm3, %%mm1     \n\t" /* RGBRGBRG 2 */
433
        MOVNTQ"    %%mm1, 16(%1)    \n\t"
434

    
435
        "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
436
        "pxor      %%mm4, %%mm4     \n\t"
437
#endif
438

    
439
        "add $24, %1    \n\t"
440
        "add  $4, %0    \n\t"
441
        " js  1b        \n\t"
442

    
443
        : "+r" (index), "+r" (image)
444
        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
445
        );
446
    }
447

    
448
    asm volatile (EMMS);
449
    return srcSliceH;
450
}
451

    
452
static inline int RENAME(yuv420_rgb32)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
453
                                       int srcSliceH, uint8_t* dst[], int dstStride[]){
454
    int y, h_size;
455

    
456
    if(c->srcFormat == PIX_FMT_YUV422P){
457
        srcStride[1] *= 2;
458
        srcStride[2] *= 2;
459
    }
460

    
461
    h_size= (c->dstW+7)&~7;
462
    if(h_size*4 > FFABS(dstStride[0])) h_size-=8;
463

    
464
    asm volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );
465

    
466
    for (y= 0; y<srcSliceH; y++ ) {
467
        uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];
468
        uint8_t *py = src[0] + y*srcStride[0];
469
        uint8_t *pu = src[1] + (y>>1)*srcStride[1];
470
        uint8_t *pv = src[2] + (y>>1)*srcStride[2];
471
        long index= -h_size/2;
472

    
473
        /* This MMX assembly code deals with a SINGLE scan line at a time,
474
         * it converts 8 pixels in each iteration. */
475
        asm volatile (
476
        /* load data for start of next scan line */
477
        "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
478
        "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
479
        "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
480
        //".balign 16     \n\t"
481
        "1:             \n\t"
482
YUV2RGB
483
        /* convert RGB plane to RGB packed format,
484
           mm0 ->  B, mm1 -> R, mm2 -> G, mm3 -> 0,
485
           mm4 -> GB, mm5 -> AR pixel 4-7,
486
           mm6 -> GB, mm7 -> AR pixel 0-3 */
487
        "pxor      %%mm3, %%mm3;"   /* zero mm3 */
488

    
489
        "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
490
        "movq      %%mm1, %%mm7;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */
491

    
492
        "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
493
        "movq      %%mm1, %%mm5;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */
494

    
495
        "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */
496
        "punpcklbw %%mm3, %%mm7;"   /* 00 R3 00 R2 00 R1 00 R0 */
497

    
498
        "punpcklwd %%mm7, %%mm6;"   /* 00 R1 B1 G1 00 R0 B0 G0 */
499
        MOVNTQ "   %%mm6, (%1);"    /* Store ARGB1 ARGB0 */
500

    
501
        "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
502
        "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */
503

    
504
        "punpckhwd %%mm7, %%mm6;"   /* 00 R3 G3 B3 00 R2 B3 G2 */
505
        MOVNTQ "   %%mm6, 8 (%1);"  /* Store ARGB3 ARGB2 */
506

    
507
        "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */
508
        "punpckhbw %%mm3, %%mm5;"   /* 00 R7 00 R6 00 R5 00 R4 */
509

    
510
        "punpcklwd %%mm5, %%mm4;"   /* 00 R5 B5 G5 00 R4 B4 G4 */
511
        MOVNTQ "   %%mm4, 16 (%1);" /* Store ARGB5 ARGB4 */
512

    
513
        "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
514
        "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */
515

    
516
        "punpckhwd %%mm5, %%mm4;"   /* 00 R7 G7 B7 00 R6 B6 G6 */
517
        MOVNTQ "   %%mm4, 24 (%1);" /* Store ARGB7 ARGB6 */
518

    
519
        "movd 4 (%2, %0), %%mm0;"   /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
520
        "movd 4 (%3, %0), %%mm1;"   /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
521

    
522
        "pxor         %%mm4, %%mm4;" /* zero mm4 */
523
        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
524

    
525
        "add $32, %1    \n\t"
526
        "add  $4, %0    \n\t"
527
        " js  1b        \n\t"
528

    
529
        : "+r" (index), "+r" (image)
530
        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)
531
        );
532
    }
533

    
534
    asm volatile (EMMS);
535
    return srcSliceH;
536
}