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;*****************************************************************************;* mc.asm: h264 encoder library;*****************************************************************************;* Copyright (C) 2003 x264 project;* $Id: mc.asm,v 1.3 2004/06/18 01:59:58 chenm001 Exp $;*;* Authors: Min Chen <chenm001.163.com> (converted to nasm);* Laurent Aimar <fenrir@via.ecp.fr> (init algorithm);*;* This program is free software; you can redistribute it and/or modify;* it under the terms of the GNU General Public License as published by;* the Free Software Foundation; either version 2 of the License, or;* (at your option) any later version.;*;* This program is distributed in the hope that it will be useful,;* but WITHOUT ANY WARRANTY; without even the implied warranty of;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the;* GNU General Public License for more details.;*;* You should have received a copy of the GNU General Public License;* along with this program; if not, write to the Free Software;* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.;*****************************************************************************;*****************************************************************************;* *;* Revision history: *;* *;* 2004.05.17 portab mc_copy_w4/8/16 (CM) *;* *;*****************************************************************************BITS 32;=============================================================================; Macros and other preprocessor constants;=============================================================================%macro cglobal 1 %ifdef PREFIX global _%1 %define %1 _%1 %else global %1 %endif%endmacro;=============================================================================; Local Data (Read Only);=============================================================================%ifdef FORMAT_COFFSECTION .rodata data%elseSECTION .rodata data align=16%endif;-----------------------------------------------------------------------------; Various memory constants (trigonometric values or rounding values);-----------------------------------------------------------------------------ALIGN 16;=============================================================================; Code;=============================================================================SECTION .textcglobal x264_pixel_avg_w4_mmxextcglobal x264_pixel_avg_w8_mmxextcglobal x264_pixel_avg_w16_mmxextcglobal x264_pixel_avg_w16_sse2cglobal x264_mc_copy_w4_mmxextcglobal x264_mc_copy_w8_mmxextcglobal x264_mc_copy_w16_mmxextcglobal x264_mc_copy_w16_sse2cglobal x264_mc_chroma_sseALIGN 16;-----------------------------------------------------------------------------; void x264_pixel_avg_w4_mmxext( uint8_t *dst, int i_dst_stride,; uint8_t *src1, int i_src1_stride,; uint8_t *src2, int i_src2_stride,; int i_height );;-----------------------------------------------------------------------------x264_pixel_avg_w4_mmxext: push ebp push ebx push esi push edi mov edi, [esp+20] ; dst mov ebx, [esp+28] ; src1 mov ecx, [esp+36] ; src2 mov esi, [esp+24] ; i_dst_stride mov eax, [esp+32] ; i_src1_stride mov edx, [esp+40] ; i_src2_stride mov ebp, [esp+44] ; i_heightALIGN 4.height_loop movd mm0, [ebx] pavgb mm0, [ecx] movd mm1, [ebx+eax] pavgb mm1, [ecx+edx] movd [edi], mm0 movd [edi+esi], mm1 dec ebp dec ebp lea ebx, [ebx+eax*2] lea ecx, [ecx+edx*2] lea edi, [edi+esi*2] jne .height_loop pop edi pop esi pop ebx pop ebp ret ALIGN 16;-----------------------------------------------------------------------------; void x264_pixel_avg_w8_mmxext( uint8_t *dst, int i_dst_stride,; uint8_t *src1, int i_src1_stride,; uint8_t *src2, int i_src2_stride,; int i_height );;-----------------------------------------------------------------------------x264_pixel_avg_w8_mmxext: push ebp push ebx push esi push edi mov edi, [esp+20] ; dst mov ebx, [esp+28] ; src1 mov ecx, [esp+36] ; src2 mov esi, [esp+24] ; i_dst_stride mov eax, [esp+32] ; i_src1_stride mov edx, [esp+40] ; i_src2_stride mov ebp, [esp+44] ; i_heightALIGN 4.height_loop movq mm0, [ebx] pavgb mm0, [ecx] movq [edi], mm0 dec ebp lea ebx, [ebx+eax] lea ecx, [ecx+edx] lea edi, [edi+esi] jne .height_loop pop edi pop esi pop ebx pop ebp retALIGN 16;-----------------------------------------------------------------------------; void x264_pixel_avg_w16_mmxext( uint8_t *dst, int i_dst_stride,; uint8_t *src1, int i_src1_stride,; uint8_t *src2, int i_src2_stride,; int i_height );;-----------------------------------------------------------------------------x264_pixel_avg_w16_mmxext: push ebp push ebx push esi push edi mov edi, [esp+20] ; dst mov ebx, [esp+28] ; src1 mov ecx, [esp+36] ; src2 mov esi, [esp+24] ; i_dst_stride mov eax, [esp+32] ; i_src1_stride mov edx, [esp+40] ; i_src2_stride mov ebp, [esp+44] ; i_heightALIGN 4.height_loop movq mm0, [ebx ] movq mm1, [ebx+8] pavgb mm0, [ecx ] pavgb mm1, [ecx+8] movq [edi ], mm0 movq [edi+8], mm1 dec ebp lea ebx, [ebx+eax] lea ecx, [ecx+edx] lea edi, [edi+esi] jne .height_loop pop edi pop esi pop ebx pop ebp retALIGN 16;-----------------------------------------------------------------------------; void x264_pixel_avg_w16_sse2( uint8_t *dst, int i_dst_stride,; uint8_t *src1, int i_src1_stride,; uint8_t *src2, int i_src2_stride,; int i_height );;-----------------------------------------------------------------------------x264_pixel_avg_w16_sse2: push ebp push ebx push esi push edi mov edi, [esp+20] ; dst mov ebx, [esp+28] ; src1 mov ecx, [esp+36] ; src2 mov esi, [esp+24] ; i_dst_stride mov eax, [esp+32] ; i_src1_stride mov edx, [esp+40] ; i_src2_stride mov ebp, [esp+44] ; i_heightALIGN 4.height_loop movdqu xmm0, [ebx] pavgb xmm0, [ecx] movdqu [edi], xmm0 dec ebp lea ebx, [ebx+eax] lea ecx, [ecx+edx] lea edi, [edi+esi] jne .height_loop pop edi pop esi pop ebx pop ebp retALIGN 16;-----------------------------------------------------------------------------; void x264_mc_copy_w4_mmxext( uint8_t *src, int i_src_stride,; uint8_t *dst, int i_dst_stride, int i_height );-----------------------------------------------------------------------------x264_mc_copy_w4_mmxext: push ebx push esi push edi mov esi, [esp+16] ; src mov edi, [esp+24] ; dst mov ebx, [esp+20] ; i_src_stride mov edx, [esp+28] ; i_dst_stride mov ecx, [esp+32] ; i_heightALIGN 4.height_loop mov eax, [esi] mov [edi], eax mov eax, [esi+ebx] mov [edi+edx], eax lea esi, [esi+ebx*2] lea edi, [edi+edx*2] dec ecx dec ecx jne .height_loop pop edi pop esi pop ebx retcglobal mc_copy_w8ALIGN 16;-----------------------------------------------------------------------------; void x264_mc_copy_w8_mmxext( uint8_t *src, int i_src_stride,; uint8_t *dst, int i_dst_stride, int i_height );-----------------------------------------------------------------------------x264_mc_copy_w8_mmxext: push ebx push esi push edi mov esi, [esp+16] ; src mov edi, [esp+24] ; dst mov ebx, [esp+20] ; i_src_stride mov edx, [esp+28] ; i_dst_stride mov ecx, [esp+32] ; i_heightALIGN 4.height_loop movq mm0, [esi] movq [edi], mm0 movq mm1, [esi+ebx] movq [edi+edx], mm1 movq mm2, [esi+ebx*2] movq [edi+edx*2], mm2 lea esi, [esi+ebx*2] lea edi, [edi+edx*2] movq mm3, [esi+ebx] movq [edi+edx], mm3 lea esi, [esi+ebx*2] lea edi, [edi+edx*2] sub ecx, byte 4 jnz .height_loop pop edi pop esi pop ebx retcglobal mc_copy_w16ALIGN 16;-----------------------------------------------------------------------------; void x264_mc_copy_w16_mmxext( uint8_t *src, int i_src_stride,; uint8_t *dst, int i_dst_stride, int i_height );-----------------------------------------------------------------------------x264_mc_copy_w16_mmxext: push ebx push esi push edi mov esi, [esp+16] ; src mov edi, [esp+24] ; dst mov ebx, [esp+20] ; i_src_stride mov edx, [esp+28] ; i_dst_stride mov ecx, [esp+32] ; i_heightALIGN 4.height_loop movq mm0, [esi] movq mm1, [esi+8] movq [edi], mm0 movq [edi+8], mm1 movq mm2, [esi+ebx] movq mm3, [esi+ebx+8] movq [edi+edx], mm2 movq [edi+edx+8], mm3 movq mm4, [esi+ebx*2] movq mm5, [esi+ebx*2+8] movq [edi+edx*2], mm4 movq [edi+edx*2+8], mm5 lea esi, [esi+ebx*2] lea edi, [edi+edx*2] movq mm6, [esi+ebx] movq mm7, [esi+ebx+8] movq [edi+edx], mm6 movq [edi+edx+8], mm7 lea esi, [esi+ebx*2] lea edi, [edi+edx*2] sub ecx, byte 4 jnz .height_loop pop edi pop esi pop ebx retALIGN 16;-----------------------------------------------------------------------------; void x264_mc_copy_w16_sse2( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_height );-----------------------------------------------------------------------------x264_mc_copy_w16_sse2: push ebx push esi push edi mov esi, [esp+16] ; src mov edi, [esp+24] ; dst mov ebx, [esp+20] ; i_src_stride mov edx, [esp+28] ; i_dst_stride mov ecx, [esp+32] ; i_heightALIGN 4.height_loop movdqu xmm0, [esi] movdqu xmm1, [esi+ebx] movdqu [edi], xmm0 movdqu [edi+edx], xmm1 dec ecx dec ecx lea esi, [esi+ebx*2] lea edi, [edi+edx*2] jnz .height_loop pop edi pop esi pop ebx retSECTION .rodataALIGN 16eights times 4 dw 8thirty2s times 4 dw 32SECTION .textALIGN 16;-----------------------------------------------------------------------------; void x264_mc_chroma_sse( uint8_t *src, int i_src_stride,; uint8_t *dst, int i_dst_stride,; int dx, int dy,; int i_height, int i_width );-----------------------------------------------------------------------------x264_mc_chroma_sse: pxor mm3, mm3 pshufw mm5, [esp+20], 0 ; mm5 - dx pshufw mm6, [esp+24], 0 ; mm6 - dy movq mm4, [eights] movq mm0, mm4 psubw mm4, mm5 ; mm4 - 8-dx psubw mm0, mm6 ; mm0 - 8-dy movq mm7, mm5 pmullw mm5, mm0 ; mm5 = dx*(8-dy) = cB pmullw mm7, mm6 ; mm7 = dx*dy = cD pmullw mm6, mm4 ; mm6 = (8-dx)*dy = cC pmullw mm4, mm0 ; mm4 = (8-dx)*(8-dy) = cA push edi mov eax, [esp+4+4] ; src mov edi, [esp+4+12] ; dst mov ecx, [esp+4+8] ; i_src_stride mov edx, [esp+4+28] ; i_heightALIGN 4.height_loop movd mm1, [eax+ecx] movd mm0, [eax] punpcklbw mm1, mm3 ; 00 px1 | 00 px2 | 00 px3 | 00 px4 punpcklbw mm0, mm3 pmullw mm1, mm6 ; 2nd line * cC pmullw mm0, mm4 ; 1st line * cA paddw mm0, mm1 ; mm0 <- result movd mm2, [eax+1] movd mm1, [eax+ecx+1] punpcklbw mm2, mm3 punpcklbw mm1, mm3 paddw mm0, [thirty2s] pmullw mm2, mm5 ; line * cB pmullw mm1, mm7 ; line * cD paddw mm0, mm2 paddw mm0, mm1 psrlw mm0, 6 packuswb mm0, mm3 ; 00 00 00 00 px1 px2 px3 px4 movd [edi], mm0 add eax, ecx add edi, [esp+4+16] dec edx jnz .height_loop mov eax, [esp+4+32] sub eax, 8 jnz .finish ; width != 8 so assume 4 mov [esp+4+32], eax mov edi, [esp+4+12] ; dst mov eax, [esp+4+4] ; src mov edx, [esp+4+28] ; i_height add edi, 4 add eax, 4 jmp .height_loop.finish pop edi ret⌨️ 快捷键说明
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