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