📄 transferidct_mmx.c
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#include "../transferidct.h"void EncTransferIDCT_add(uint8_t* pDest, int16_t* pSrc, int stride){ __asm { mov ecx, pDest mov edx, pSrc mov eax, stride mov edi, 8 pxor mm2, mm2p1: movq mm0, [edx] movq mm1, [edx+8] movq mm3, [ecx] movq mm4, mm3 punpcklbw mm3, mm2 punpckhbw mm4, mm2 paddsw mm0, mm3 paddsw mm1, mm4 packuswb mm0, mm1 movq [ecx], mm0 add edx, 16 add ecx, eax dec edi jnz p1 emms }}void EncTransferIDCT_copy(uint8_t* pDest, int16_t* pSrc, int stride){ _asm { ; not sure about the state handling here - there must be a better way push eax push ebx push edi mov eax, pSrc ; parameter 1, *sourceS16 mov ebx, pDest ; 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 }}void EncTransferFDCT_sub(const uint8_t* pSrc, uint8_t* pSrc2, int16_t* pDest, int stride){ __asm { mov edx, pSrc2 mov ecx, pDest mov eax, stride mov esi, pSrc mov edi, 8 pxor mm1, mm1p2: movq mm0, [edx] movq mm2, mm0 punpcklbw mm2, mm1 punpckhbw mm0, mm1 movq mm3, [esi] movq mm4, mm3 movq mm5, mm3 punpcklbw mm4, mm1 punpckhbw mm3, mm1 psubsw mm0, mm3 psubsw mm2, mm4 movq [ecx], mm2 movq [ecx+8], mm0 movq [edx], mm5 add ecx, 16 add edx, eax add esi, eax dec edi jnz p2 emms }}void EncTransferFDCT_copy(uint8_t* pSrc, int16_t* pDest, int stride){ __asm { mov ecx, pDest mov edx, pSrc mov eax, stride mov edi, 8 pxor mm1, mm1p3: movq mm0, [edx] movq mm2, mm0 punpcklbw mm2, mm1 movq [ecx], mm2 punpckhbw mm0, mm1 movq [ecx+8], mm0 add ecx, 16 add edx, eax dec edi jnz p3 emms }}⌨️ 快捷键说明
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