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transferIDCT_mmx.c
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上传用户：hxb_1234
上传日期：2010-03-30
资源大小：8328k
文件大小：9k
源码类别：
VC书籍
开发平台：
Visual C++
- #ifdef _TEST_TRANSFER
- #include <stdio.h>
- #endif
- #include "portab.h"
- void transferIDCT_add(int16_t *sourceS16, uint8_t *destU8, int stride) {
- #ifdef _TEST_TRANSFER
- uint8_t reference_dest[64];
- int x, y, sum16;
- for (y=0; y<8; y++) {
- for (x=0; x<8; x++) {
- sum16 = (destU8[stride*y + x] + sourceS16[8*y + x]);
- if (sum16 > 255) reference_dest[8*y + x] = 255;
- else if (sum16 < 0) reference_dest[8*y + x] = 0;
- else reference_dest[8*y + x] = (uint8_t)sum16;
- }
- }
- #endif
- _asm {
- ; not sure about the state handling here - there must be a better way
- push eax
- push ebx
- push edi
- mov eax, sourceS16 ; parameter 1, *sourceS16
- mov ebx, destU8 ; parameter 2, *destU8
- mov edi, stride ; parameter 3, stride
- pxor mm7, mm7 ; set mm7 = 0
- ; lines 0 to 7 all scheduled in together
- movq mm0, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm1, mm0 ; eight bytes of destination into mm0
- punpcklbw mm0, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm1, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm0, qword ptr [eax] ; add source and destination
- paddsw mm1, qword ptr [eax+8]; add source and destination
- packuswb mm0, mm1 ; pack mm0 and mm1 into mm0
- movq qword ptr [ebx], mm0 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm2, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm3, mm2 ; eight bytes of destination into mm3
- punpcklbw mm2, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm3, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm2, qword ptr [eax+16] ; add source and destination
- paddsw mm3, qword ptr [eax+24]; add source and destination
- packuswb mm2, mm3 ; pack mm0 and mm1 into mm0
- movq qword ptr [ebx], mm2 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm4, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm5, mm4 ; eight bytes of destination into mm5
- punpcklbw mm4, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm5, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm4, qword ptr [eax+32] ; add source and destination
- paddsw mm5, qword ptr [eax+40]; add source and destination
- packuswb mm4, mm5 ; pack mm0 and mm1 into mm0
- movq qword ptr [ebx], mm4 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm0, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm1, qword ptr [ebx] ; eight bytes of destination into mm5
- punpcklbw mm0, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm1, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm0, qword ptr [eax+48] ; add source and destination
- paddsw mm1, qword ptr [eax+56]; add source and destination
- packuswb mm0, mm1 ; pack mm0 and mm1 into mm0
- add eax, 64 ; add +64 to source ptr
- movq qword ptr [ebx], mm0 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm2, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm3, mm2 ; eight bytes of destination into mm3
- punpcklbw mm2, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm3, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm2, qword ptr [eax] ; add source and destination
- paddsw mm3, qword ptr [eax+8]; add source and destination
- packuswb mm2, mm3 ; pack mm0 and mm1 into mm0
- add eax, 16 ; add +16 to source ptr
- movq qword ptr [ebx], mm2 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm4, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm5, mm4 ; eight bytes of destination into mm5
- punpcklbw mm4, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm5, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm4, qword ptr [eax] ; add source and destination
- paddsw mm5, qword ptr [eax+8]; add source and destination
- packuswb mm4, mm5 ; pack mm0 and mm1 into mm0
- add eax, 16 ; add +16 to source ptr
- movq qword ptr [ebx], mm4 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm0, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm1, mm0 ; eight bytes of destination into mm1
- punpcklbw mm0, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm1, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm0, qword ptr [eax] ; add source and destination
- paddsw mm1, qword ptr [eax+8]; add source and destination
- packuswb mm0, mm1 ; pack mm0 and mm1 into mm0
- add eax, 16 ; add +16 to source ptr
- movq qword ptr [ebx], mm0 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm2, qword ptr [ebx] ; eight bytes of destination into mm4
- movq mm3, mm2 ; eight bytes of destination into mm3
- punpcklbw mm2, mm7 ; unpack first 4 bytes from dest into mm4
- punpckhbw mm3, mm7 ; unpack next 4 bytes from dest into mm5
- paddsw mm2, qword ptr [eax] ; add source and destination
- paddsw mm3, qword ptr [eax+8]; add source and destination
- packuswb mm2, mm3 ; pack mm0 and mm1 into mm0
- movq qword ptr [ebx], mm2 ; copy output to destination
- pop edi
- pop ebx
- pop eax
- emms
- }
- #ifdef _TEST_TRANSFER
- for (y=0; y<8; y++) {
- for (x=0; x<8; x++) {
- if (reference_dest[8*y + x] != destU8[stride*y + x]) printf("transferIDCT_add() is brokenn");
- }
- }
- #endif
- }
- void transferIDCT_copy(int16_t *sourceS16, uint8_t *destU8, int stride) {
- #ifdef _TEST_TRANSFER
- int x, y, clipped;
- #endif
- _asm {
- ; not sure about the state handling here - there must be a better way
- push eax
- push ebx
- push edi
- mov eax, sourceS16 ; parameter 1, *sourceS16
- mov ebx, destU8 ; parameter 2, *destU8
- mov edi, stride ; parameter 3, stride
- ; lines 0 to 7 schedueled into each other...
- movq mm0, qword ptr [eax] ; move first four words into mm0
- packuswb mm0, qword ptr [eax+8] ; pack mm0 and the next four words into mm0
- movq mm1, qword ptr [eax+16] ; move first four words into mm1
- packuswb mm1, qword ptr [eax+24]; pack mm0 and the next four words into mm1
- movq mm2, qword ptr [eax+32] ; move first four words into mm2
- packuswb mm2, qword ptr [eax+40]; pack mm0 and the next four words into mm2
- movq mm3, qword ptr [eax+48] ; move first four words into mm3
- packuswb mm3, qword ptr [eax+56] ; pack mm3 and the next four words into mm3
- movq qword ptr [ebx], mm0 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm1 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm2 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm3 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq mm0, qword ptr [eax+64] ; move first four words into mm0
- add eax, 64 ; add 64 to source ptr
- packuswb mm0, qword ptr [eax+8] ; pack mm0 and the next four words into mm0
- movq mm1, qword ptr [eax+16] ; move first four words into mm1
- packuswb mm1, qword ptr [eax+24]; pack mm0 and the next four words into mm1
- movq mm2, qword ptr [eax+32] ; move first four words into mm2
- packuswb mm2, qword ptr [eax+40]; pack mm0 and the next four words into mm2
- movq mm3, qword ptr [eax+48] ; move first four words into mm3
- packuswb mm3, qword ptr [eax+56]; pack mm3 and the next four words into mm3
- movq qword ptr [ebx], mm0 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm1 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm2 ; copy output to destination
- add ebx, edi ; add +stride to dest ptr
- movq qword ptr [ebx], mm3 ; copy output to destination
- pop edi
- pop ebx
- pop eax
- emms
- }
- #ifdef _TEST_TRANSFER
- for (y=0; y<8; y++) {
- for (x=0; x<8; x++) {
- clipped = sourceS16[8*y + x];
- if (clipped > 255) clipped = 255;
- if (clipped < 0) clipped = 0;
- if (clipped != destU8[stride*y+x]) printf("transferIDCT_copy() is brokenn");
- }
- }
- #endif
- }
