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godot/drivers/theora/x86_vc/mmxfrag.c

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/********************************************************************
* *
* 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 16578 2009-09-25 19:50:48Z cristianadam $
********************************************************************/
/*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){
#define SRC edx
#define DST eax
#define YSTRIDE ecx
#define YSTRIDE3 esi
OC_FRAG_COPY_MMX(_dst,_src,_ystride);
#undef SRC
#undef DST
#undef YSTRIDE
#undef YSTRIDE3
}
void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
const ogg_int16_t *_residue){
__asm{
#define DST edx
#define DST4 esi
#define YSTRIDE eax
#define YSTRIDE3 edi
#define RESIDUE ecx
mov DST,_dst
mov YSTRIDE,_ystride
mov RESIDUE,_residue
lea DST4,[DST+YSTRIDE*4]
lea YSTRIDE3,[YSTRIDE+YSTRIDE*2]
/*Set mm0 to 0xFFFFFFFFFFFFFFFF.*/
pcmpeqw mm0,mm0
/*#0 Load low residue.*/
movq mm1,[0*8+RESIDUE]
/*#0 Load high residue.*/
movq mm2,[1*8+RESIDUE]
/*Set mm0 to 0x8000800080008000.*/
psllw mm0,15
/*#1 Load low residue.*/
movq mm3,[2*8+RESIDUE]
/*#1 Load high residue.*/
movq mm4,[3*8+RESIDUE]
/*Set mm0 to 0x0080008000800080.*/
psrlw mm0,8
/*#2 Load low residue.*/
movq mm5,[4*8+RESIDUE]
/*#2 Load high residue.*/
movq mm6,[5*8+RESIDUE]
/*#0 Bias low residue.*/
paddsw mm1,mm0
/*#0 Bias high residue.*/
paddsw mm2,mm0
/*#0 Pack to byte.*/
packuswb mm1,mm2
/*#1 Bias low residue.*/
paddsw mm3,mm0
/*#1 Bias high residue.*/
paddsw mm4,mm0
/*#1 Pack to byte.*/
packuswb mm3,mm4
/*#2 Bias low residue.*/
paddsw mm5,mm0
/*#2 Bias high residue.*/
paddsw mm6,mm0
/*#2 Pack to byte.*/
packuswb mm5,mm6
/*#0 Write row.*/
movq [DST],mm1
/*#1 Write row.*/
movq [DST+YSTRIDE],mm3
/*#2 Write row.*/
movq [DST+YSTRIDE*2],mm5
/*#3 Load low residue.*/
movq mm1,[6*8+RESIDUE]
/*#3 Load high residue.*/
movq mm2,[7*8+RESIDUE]
/*#4 Load high residue.*/
movq mm3,[8*8+RESIDUE]
/*#4 Load high residue.*/
movq mm4,[9*8+RESIDUE]
/*#5 Load high residue.*/
movq mm5,[10*8+RESIDUE]
/*#5 Load high residue.*/
movq mm6,[11*8+RESIDUE]
/*#3 Bias low residue.*/
paddsw mm1,mm0
/*#3 Bias high residue.*/
paddsw mm2,mm0
/*#3 Pack to byte.*/
packuswb mm1,mm2
/*#4 Bias low residue.*/
paddsw mm3,mm0
/*#4 Bias high residue.*/
paddsw mm4,mm0
/*#4 Pack to byte.*/
packuswb mm3,mm4
/*#5 Bias low residue.*/
paddsw mm5,mm0
/*#5 Bias high residue.*/
paddsw mm6,mm0
/*#5 Pack to byte.*/
packuswb mm5,mm6
/*#3 Write row.*/
movq [DST+YSTRIDE3],mm1
/*#4 Write row.*/
movq [DST4],mm3
/*#5 Write row.*/
movq [DST4+YSTRIDE],mm5
/*#6 Load low residue.*/
movq mm1,[12*8+RESIDUE]
/*#6 Load high residue.*/
movq mm2,[13*8+RESIDUE]
/*#7 Load low residue.*/
movq mm3,[14*8+RESIDUE]
/*#7 Load high residue.*/
movq mm4,[15*8+RESIDUE]
/*#6 Bias low residue.*/
paddsw mm1,mm0
/*#6 Bias high residue.*/
paddsw mm2,mm0
/*#6 Pack to byte.*/
packuswb mm1,mm2
/*#7 Bias low residue.*/
paddsw mm3,mm0
/*#7 Bias high residue.*/
paddsw mm4,mm0
/*#7 Pack to byte.*/
packuswb mm3,mm4
/*#6 Write row.*/
movq [DST4+YSTRIDE*2],mm1
/*#7 Write row.*/
movq [DST4+YSTRIDE3],mm3
#undef DST
#undef DST4
#undef YSTRIDE
#undef YSTRIDE3
#undef RESIDUE
}
}
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 pxor mm0,mm0;
for(i=4;i-->0;){
__asm{
#define DST edx
#define SRC ecx
#define YSTRIDE edi
#define RESIDUE eax
mov DST,_dst
mov SRC,_src
mov YSTRIDE,_ystride
mov RESIDUE,_residue
/*#0 Load source.*/
movq mm3,[SRC]
/*#1 Load source.*/
movq mm7,[SRC+YSTRIDE]
/*#0 Get copy of src.*/
movq mm4,mm3
/*#0 Expand high source.*/
punpckhbw mm4,mm0
/*#0 Expand low source.*/
punpcklbw mm3,mm0
/*#0 Add residue high.*/
paddsw mm4,[8+RESIDUE]
/*#1 Get copy of src.*/
movq mm2,mm7
/*#0 Add residue low.*/
paddsw mm3,[RESIDUE]
/*#1 Expand high source.*/
punpckhbw mm2,mm0
/*#0 Pack final row pixels.*/
packuswb mm3,mm4
/*#1 Expand low source.*/
punpcklbw mm7,mm0
/*#1 Add residue low.*/
paddsw mm7,[16+RESIDUE]
/*#1 Add residue high.*/
paddsw mm2,[24+RESIDUE]
/*Advance residue.*/
lea RESIDUE,[32+RESIDUE]
/*#1 Pack final row pixels.*/
packuswb mm7,mm2
/*Advance src.*/
lea SRC,[SRC+YSTRIDE*2]
/*#0 Write row.*/
movq [DST],mm3
/*#1 Write row.*/
movq [DST+YSTRIDE],mm7
/*Advance dst.*/
lea DST,[DST+YSTRIDE*2]
mov _residue,RESIDUE
mov _dst,DST
mov _src,SRC
#undef DST
#undef SRC
#undef YSTRIDE
#undef RESIDUE
}
}
}
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 pxor mm7,mm7;
for(i=4;i-->0;){
__asm{
#define SRC1 ecx
#define SRC2 edi
#define YSTRIDE esi
#define RESIDUE edx
#define DST eax
mov YSTRIDE,_ystride
mov DST,_dst
mov RESIDUE,_residue
mov SRC1,_src1
mov SRC2,_src2
/*#0 Load src1.*/
movq mm0,[SRC1]
/*#0 Load src2.*/
movq mm2,[SRC2]
/*#0 Copy src1.*/
movq mm1,mm0
/*#0 Copy src2.*/
movq mm3,mm2
/*#1 Load src1.*/
movq mm4,[SRC1+YSTRIDE]
/*#0 Unpack lower src1.*/
punpcklbw mm0,mm7
/*#1 Load src2.*/
movq mm5,[SRC2+YSTRIDE]
/*#0 Unpack higher src1.*/
punpckhbw mm1,mm7
/*#0 Unpack lower src2.*/
punpcklbw mm2,mm7
/*#0 Unpack higher src2.*/
punpckhbw mm3,mm7
/*Advance src1 ptr.*/
lea SRC1,[SRC1+YSTRIDE*2]
/*Advance src2 ptr.*/
lea SRC2,[SRC2+YSTRIDE*2]
/*#0 Lower src1+src2.*/
paddsw mm0,mm2
/*#0 Higher src1+src2.*/
paddsw mm1,mm3
/*#1 Copy src1.*/
movq mm2,mm4
/*#0 Build lo average.*/
psraw mm0,1
/*#1 Copy src2.*/
movq mm3,mm5
/*#1 Unpack lower src1.*/
punpcklbw mm4,mm7
/*#0 Build hi average.*/
psraw mm1,1
/*#1 Unpack higher src1.*/
punpckhbw mm2,mm7
/*#0 low+=residue.*/
paddsw mm0,[RESIDUE]
/*#1 Unpack lower src2.*/
punpcklbw mm5,mm7
/*#0 high+=residue.*/
paddsw mm1,[8+RESIDUE]
/*#1 Unpack higher src2.*/
punpckhbw mm3,mm7
/*#1 Lower src1+src2.*/
paddsw mm5,mm4
/*#0 Pack and saturate.*/
packuswb mm0,mm1
/*#1 Higher src1+src2.*/
paddsw mm3,mm2
/*#0 Write row.*/
movq [DST],mm0
/*#1 Build lo average.*/
psraw mm5,1
/*#1 Build hi average.*/
psraw mm3,1
/*#1 low+=residue.*/
paddsw mm5,[16+RESIDUE]
/*#1 high+=residue.*/
paddsw mm3,[24+RESIDUE]
/*#1 Pack and saturate.*/
packuswb mm5,mm3
/*#1 Write row ptr.*/
movq [DST+YSTRIDE],mm5
/*Advance residue ptr.*/
add RESIDUE,32
/*Advance dest ptr.*/
lea DST,[DST+YSTRIDE*2]
mov _dst,DST
mov _residue,RESIDUE
mov _src1,SRC1
mov _src2,SRC2
#undef SRC1
#undef SRC2
#undef YSTRIDE
#undef RESIDUE
#undef DST
}
}
}
void oc_restore_fpu_mmx(void){
__asm emms;
}
#endif
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