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140 lines
5.0 KiB
140 lines
5.0 KiB
/* |
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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" (sixtyfour)); |
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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" (thirtytwo)); |
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dst+= stride; |
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} |
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}
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