mirror of
https://github.com/FFmpeg/FFmpeg.git
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141 lines
5.0 KiB
C
141 lines
5.0 KiB
C
/*
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* Copyright (c) 2005 Zoltan Hidvegi <hzoli -a- hzoli -d- com>
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* MMX optimized version of (put|avg)_h264_chroma_mc8.
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* H264_CHROMA_MC8_TMPL must be defined to the desired function name and
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* H264_CHROMA_OP must be defined to empty for put and pavgb/pavgusb for avg.
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*/
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static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
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{
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uint64_t AA __align8;
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uint64_t DD __align8;
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unsigned long srcos = (long)src & 7;
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uint64_t sh1 __align8 = srcos * 8;
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uint64_t sh2 __align8 = 56 - sh1;
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int i;
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assert(x<8 && y<8 && x>=0 && y>=0);
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asm volatile("movd %1, %%mm4\n\t"
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"movd %2, %%mm6\n\t"
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"punpcklwd %%mm4, %%mm4\n\t"
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"punpcklwd %%mm6, %%mm6\n\t"
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"punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */
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"punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */
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"movq %%mm4, %%mm5\n\t"
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"pmullw %%mm6, %%mm4\n\t" /* mm4 = x * y */
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"psllw $3, %%mm5\n\t"
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"psllw $3, %%mm6\n\t"
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"movq %%mm5, %%mm7\n\t"
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"paddw %%mm6, %%mm7\n\t"
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"movq %%mm4, %0\n\t" /* DD = x * y */
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"psubw %%mm4, %%mm5\n\t" /* mm5 = B = 8x - xy */
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"psubw %%mm4, %%mm6\n\t" /* mm6 = C = 8y - xy */
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"paddw %3, %%mm4\n\t"
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"psubw %%mm7, %%mm4\n\t" /* mm4 = A = xy - (8x+8y) + 64 */
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"pxor %%mm7, %%mm7\n\t"
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: "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));
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asm volatile("movq %%mm4, %0" : "=m" (AA));
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src -= srcos;
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asm volatile(
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/* mm0 = src[0..7], mm1 = src[1..8] */
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"movq %0, %%mm1\n\t"
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"movq %1, %%mm0\n\t"
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"psrlq %2, %%mm1\n\t"
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"psllq %3, %%mm0\n\t"
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"movq %%mm0, %%mm4\n\t"
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"psllq $8, %%mm0\n\t"
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"por %%mm1, %%mm0\n\t"
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"psrlq $8, %%mm1\n\t"
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"por %%mm4, %%mm1\n\t"
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: : "m" (src[0]), "m" (src[8]), "m" (sh1), "m" (sh2));
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for(i=0; i<h; i++) {
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asm volatile(
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/* [mm2,mm3] = A * src[0..7] */
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"movq %%mm0, %%mm2\n\t"
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"punpcklbw %%mm7, %%mm2\n\t"
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"pmullw %0, %%mm2\n\t"
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"movq %%mm0, %%mm3\n\t"
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"punpckhbw %%mm7, %%mm3\n\t"
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"pmullw %0, %%mm3\n\t"
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/* [mm2,mm3] += B * src[1..8] */
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"movq %%mm1, %%mm0\n\t"
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"punpcklbw %%mm7, %%mm0\n\t"
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"pmullw %%mm5, %%mm0\n\t"
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"punpckhbw %%mm7, %%mm1\n\t"
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"pmullw %%mm5, %%mm1\n\t"
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"paddw %%mm0, %%mm2\n\t"
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"paddw %%mm1, %%mm3\n\t"
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: : "m" (AA));
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src += stride;
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asm volatile(
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/* mm0 = src[0..7], mm1 = src[1..8] */
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"movq %0, %%mm1\n\t"
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"movq %1, %%mm0\n\t"
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"psrlq %2, %%mm1\n\t"
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"psllq %3, %%mm0\n\t"
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"movq %%mm0, %%mm4\n\t"
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"psllq $8, %%mm0\n\t"
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"por %%mm1, %%mm0\n\t"
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"psrlq $8, %%mm1\n\t"
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"por %%mm4, %%mm1\n\t"
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: : "m" (src[0]), "m" (src[8]), "m" (sh1), "m" (sh2));
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asm volatile(
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/* [mm2,mm3] += C * src[0..7] */
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"movq %mm0, %mm4\n\t"
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"punpcklbw %mm7, %mm4\n\t"
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"pmullw %mm6, %mm4\n\t"
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"paddw %mm4, %mm2\n\t"
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"movq %mm0, %mm4\n\t"
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"punpckhbw %mm7, %mm4\n\t"
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"pmullw %mm6, %mm4\n\t"
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"paddw %mm4, %mm3\n\t");
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asm volatile(
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/* [mm2,mm3] += D * src[1..8] */
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"movq %%mm1, %%mm4\n\t"
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"punpcklbw %%mm7, %%mm4\n\t"
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"pmullw %0, %%mm4\n\t"
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"paddw %%mm4, %%mm2\n\t"
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"movq %%mm1, %%mm4\n\t"
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"punpckhbw %%mm7, %%mm4\n\t"
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"pmullw %0, %%mm4\n\t"
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"paddw %%mm4, %%mm3\n\t"
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: : "m" (DD));
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asm volatile(
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/* dst[0..7] = pack(([mm2,mm3] + 32) >> 6) */
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"paddw %1, %%mm2\n\t"
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"paddw %1, %%mm3\n\t"
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"psrlw $6, %%mm2\n\t"
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"psrlw $6, %%mm3\n\t"
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"packuswb %%mm3, %%mm2\n\t"
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H264_CHROMA_OP(%0, %%mm2)
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"movq %%mm2, %0\n\t"
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: "=m" (dst[0]) : "m" (ff_pw_32));
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dst+= stride;
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}
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}
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