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