/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
* *
********************************************************************
function:
last mod: $Id: mmxfrag.c 16503 2009-08-22 18:14:02Z giles $
********************************************************************/
/*MMX acceleration of fragment reconstruction for motion compensation.
Originally written by Rudolf Marek.
Additional optimization by Nils Pipenbrinck.
Note: Loops are unrolled for best performance.
The iteration each instruction belongs to is marked in the comments as #i.*/
#include <stddef.h>
#include "x86int.h"
#include "mmxfrag.h"
#if defined(OC_X86_ASM)
/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
between rows.*/
void oc_frag_copy_mmx(unsigned char *_dst,
const unsigned char *_src,int _ystride){
OC_FRAG_COPY_MMX(_dst,_src,_ystride);
}
void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
const ogg_int16_t *_residue){
__asm__ __volatile__(
/*Set mm0 to 0xFFFFFFFFFFFFFFFF.*/
"pcmpeqw %%mm0,%%mm0\n\t"
/*#0 Load low residue.*/
"movq 0*8(%[residue]),%%mm1\n\t"
/*#0 Load high residue.*/
"movq 1*8(%[residue]),%%mm2\n\t"
/*Set mm0 to 0x8000800080008000.*/
"psllw $15,%%mm0\n\t"
/*#1 Load low residue.*/
"movq 2*8(%[residue]),%%mm3\n\t"
/*#1 Load high residue.*/
"movq 3*8(%[residue]),%%mm4\n\t"
/*Set mm0 to 0x0080008000800080.*/
"psrlw $8,%%mm0\n\t"
/*#2 Load low residue.*/
"movq 4*8(%[residue]),%%mm5\n\t"
/*#2 Load high residue.*/
"movq 5*8(%[residue]),%%mm6\n\t"
/*#0 Bias low residue.*/
"paddsw %%mm0,%%mm1\n\t"
/*#0 Bias high residue.*/
"paddsw %%mm0,%%mm2\n\t"
/*#0 Pack to byte.*/
"packuswb %%mm2,%%mm1\n\t"
/*#1 Bias low residue.*/
"paddsw %%mm0,%%mm3\n\t"
/*#1 Bias high residue.*/
"paddsw %%mm0,%%mm4\n\t"
/*#1 Pack to byte.*/
"packuswb %%mm4,%%mm3\n\t"
/*#2 Bias low residue.*/
"paddsw %%mm0,%%mm5\n\t"
/*#2 Bias high residue.*/
"paddsw %%mm0,%%mm6\n\t"
/*#2 Pack to byte.*/
"packuswb %%mm6,%%mm5\n\t"
/*#0 Write row.*/
"movq %%mm1,(%[dst])\n\t"
/*#1 Write row.*/
"movq %%mm3,(%[dst],%[ystride])\n\t"
/*#2 Write row.*/
"movq %%mm5,(%[dst],%[ystride],2)\n\t"
/*#3 Load low residue.*/
"movq 6*8(%[residue]),%%mm1\n\t"
/*#3 Load high residue.*/
"movq 7*8(%[residue]),%%mm2\n\t"
/*#4 Load high residue.*/
"movq 8*8(%[residue]),%%mm3\n\t"
/*#4 Load high residue.*/
"movq 9*8(%[residue]),%%mm4\n\t"
/*#5 Load high residue.*/
"movq 10*8(%[residue]),%%mm5\n\t"
/*#5 Load high residue.*/
"movq 11*8(%[residue]),%%mm6\n\t"
/*#3 Bias low residue.*/
"paddsw %%mm0,%%mm1\n\t"
/*#3 Bias high residue.*/
"paddsw %%mm0,%%mm2\n\t"
/*#3 Pack to byte.*/
"packuswb %%mm2,%%mm1\n\t"
/*#4 Bias low residue.*/
"paddsw %%mm0,%%mm3\n\t"
/*#4 Bias high residue.*/
"paddsw %%mm0,%%mm4\n\t"
/*#4 Pack to byte.*/
"packuswb %%mm4,%%mm3\n\t"
/*#5 Bias low residue.*/
"paddsw %%mm0,%%mm5\n\t"
/*#5 Bias high residue.*/
"paddsw %%mm0,%%mm6\n\t"
/*#5 Pack to byte.*/
"packuswb %%mm6,%%mm5\n\t"
/*#3 Write row.*/
"movq %%mm1,(%[dst],%[ystride3])\n\t"
/*#4 Write row.*/
"movq %%mm3,(%[dst4])\n\t"
/*#5 Write row.*/
"movq %%mm5,(%[dst4],%[ystride])\n\t"
/*#6 Load low residue.*/
"movq 12*8(%[residue]),%%mm1\n\t"
/*#6 Load high residue.*/
"movq 13*8(%[residue]),%%mm2\n\t"
/*#7 Load low residue.*/
"movq 14*8(%[residue]),%%mm3\n\t"
/*#7 Load high residue.*/
"movq 15*8(%[residue]),%%mm4\n\t"
/*#6 Bias low residue.*/
"paddsw %%mm0,%%mm1\n\t"
/*#6 Bias high residue.*/
"paddsw %%mm0,%%mm2\n\t"
/*#6 Pack to byte.*/
"packuswb %%mm2,%%mm1\n\t"
/*#7 Bias low residue.*/
"paddsw %%mm0,%%mm3\n\t"
/*#7 Bias high residue.*/
"paddsw %%mm0,%%mm4\n\t"
/*#7 Pack to byte.*/
"packuswb %%mm4,%%mm3\n\t"
/*#6 Write row.*/
"movq %%mm1,(%[dst4],%[ystride],2)\n\t"
/*#7 Write row.*/
"movq %%mm3,(%[dst4],%[ystride3])\n\t"
:
:[residue]"r"(_residue),
[dst]"r"(_dst),
[dst4]"r"(_dst+(_ystride<<2)),
[ystride]"r"((ptrdiff_t)_ystride),
[ystride3]"r"((ptrdiff_t)_ystride*3)
:"memory"
);
}
void oc_frag_recon_inter_mmx(unsigned char *_dst,const unsigned char *_src,
int _ystride,const ogg_int16_t *_residue){
int i;
/*Zero mm0.*/
__asm__ __volatile__("pxor %%mm0,%%mm0\n\t"::);
for(i=4;i-->0;){
__asm__ __volatile__(
/*#0 Load source.*/
"movq (%[src]),%%mm3\n\t"
/*#1 Load source.*/
"movq (%[src],%[ystride]),%%mm7\n\t"
/*#0 Get copy of src.*/
"movq %%mm3,%%mm4\n\t"
/*#0 Expand high source.*/
"punpckhbw %%mm0,%%mm4\n\t"
/*#0 Expand low source.*/
"punpcklbw %%mm0,%%mm3\n\t"
/*#0 Add residue high.*/
"paddsw 8(%[residue]),%%mm4\n\t"
/*#1 Get copy of src.*/
"movq %%mm7,%%mm2\n\t"
/*#0 Add residue low.*/
"paddsw (%[residue]), %%mm3\n\t"
/*#1 Expand high source.*/
"punpckhbw %%mm0,%%mm2\n\t"
/*#0 Pack final row pixels.*/
"packuswb %%mm4,%%mm3\n\t"
/*#1 Expand low source.*/
"punpcklbw %%mm0,%%mm7\n\t"
/*#1 Add residue low.*/
"paddsw 16(%[residue]),%%mm7\n\t"
/*#1 Add residue high.*/
"paddsw 24(%[residue]),%%mm2\n\t"
/*Advance residue.*/
"lea 32(%[residue]),%[residue]\n\t"
/*#1 Pack final row pixels.*/
"packuswb %%mm2,%%mm7\n\t"
/*Advance src.*/
"lea (%[src],%[ystride],2),%[src]\n\t"
/*#0 Write row.*/
"movq %%mm3,(%[dst])\n\t"
/*#1 Write row.*/
"movq %%mm7,(%[dst],%[ystride])\n\t"
/*Advance dst.*/
"lea (%[dst],%[ystride],2),%[dst]\n\t"
:[residue]"+r"(_residue),[dst]"+r"(_dst),[src]"+r"(_src)
:[ystride]"r"((ptrdiff_t)_ystride)
:"memory"
);
}
}
void oc_frag_recon_inter2_mmx(unsigned char *_dst,const unsigned char *_src1,
const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue){
int i;
/*Zero mm7.*/
__asm__ __volatile__("pxor %%mm7,%%mm7\n\t"::);
for(i=4;i-->0;){
__asm__ __volatile__(
/*#0 Load src1.*/
"movq (%[src1]),%%mm0\n\t"
/*#0 Load src2.*/
"movq (%[src2]),%%mm2\n\t"
/*#0 Copy src1.*/
"movq %%mm0,%%mm1\n\t"
/*#0 Copy src2.*/
"movq %%mm2,%%mm3\n\t"
/*#1 Load src1.*/
"movq (%[src1],%[ystride]),%%mm4\n\t"
/*#0 Unpack lower src1.*/
"punpcklbw %%mm7,%%mm0\n\t"
/*#1 Load src2.*/
"movq (%[src2],%[ystride]),%%mm5\n\t"
/*#0 Unpack higher src1.*/
"punpckhbw %%mm7,%%mm1\n\t"
/*#0 Unpack lower src2.*/
"punpcklbw %%mm7,%%mm2\n\t"
/*#0 Unpack higher src2.*/
"punpckhbw %%mm7,%%mm3\n\t"
/*Advance src1 ptr.*/
"lea (%[src1],%[ystride],2),%[src1]\n\t"
/*Advance src2 ptr.*/
"lea (%[src2],%[ystride],2),%[src2]\n\t"
/*#0 Lower src1+src2.*/
"paddsw %%mm2,%%mm0\n\t"
/*#0 Higher src1+src2.*/
"paddsw %%mm3,%%mm1\n\t"
/*#1 Copy src1.*/
"movq %%mm4,%%mm2\n\t"
/*#0 Build lo average.*/
"psraw $1,%%mm0\n\t"
/*#1 Copy src2.*/
"movq %%mm5,%%mm3\n\t"
/*#1 Unpack lower src1.*/
"punpcklbw %%mm7,%%mm4\n\t"
/*#0 Build hi average.*/
"psraw $1,%%mm1\n\t"
/*#1 Unpack higher src1.*/
"punpckhbw %%mm7,%%mm2\n\t"
/*#0 low+=residue.*/
"paddsw (%[residue]),%%mm0\n\t"
/*#1 Unpack lower src2.*/
"punpcklbw %%mm7,%%mm5\n\t"
/*#0 high+=residue.*/
"paddsw 8(%[residue]),%%mm1\n\t"
/*#1 Unpack higher src2.*/
"punpckhbw %%mm7,%%mm3\n\t"
/*#1 Lower src1+src2.*/
"paddsw %%mm4,%%mm5\n\t"
/*#0 Pack and saturate.*/
"packuswb %%mm1,%%mm0\n\t"
/*#1 Higher src1+src2.*/
"paddsw %%mm2,%%mm3\n\t"
/*#0 Write row.*/
"movq %%mm0,(%[dst])\n\t"
/*#1 Build lo average.*/
"psraw $1,%%mm5\n\t"
/*#1 Build hi average.*/
"psraw $1,%%mm3\n\t"
/*#1 low+=residue.*/
"paddsw 16(%[residue]),%%mm5\n\t"
/*#1 high+=residue.*/
"paddsw 24(%[residue]),%%mm3\n\t"
/*#1 Pack and saturate.*/
"packuswb %%mm3,%%mm5\n\t"
/*#1 Write row ptr.*/
"movq %%mm5,(%[dst],%[ystride])\n\t"
/*Advance residue ptr.*/
"add $32,%[residue]\n\t"
/*Advance dest ptr.*/
"lea (%[dst],%[ystride],2),%[dst]\n\t"
:[dst]"+r"(_dst),[residue]"+r"(_residue),
[src1]"+%r"(_src1),[src2]"+r"(_src2)
:[ystride]"r"((ptrdiff_t)_ystride)
:"memory"
);
}
}
void oc_restore_fpu_mmx(void){
__asm__ __volatile__("emms\n\t");
}
#endif