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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 64;=============================================================================; Macros and other preprocessor constants;=============================================================================%macro cglobal 1 %ifdef PREFIX global _%1 %define %1 _%1 %else global %1 %endif%endmacro;-----------------------------------------------------------------------------; 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 rbp mov rbp, rsp push r12 push r13 mov r12, r8 ; src2 movsxd r13, r9d ; i_src2_stride mov r10, rdx ; src1 movsxd r11, ecx ; i_src1_stride mov r8, rdi ; dst movsxd r9, esi ; i_dst_stride movsxd rax, dword [rbp+16] ; i_heightALIGN 4.height_loop movd mm0, [r10] pavgb mm0, [r12] movd mm1, [r10+r11] pavgb mm1, [r12+r13] movd [r8], mm0 movd [r8+r9], mm1 dec rax dec rax lea r10, [r10+r11*2] lea r12, [r12+r13*2] lea r8, [r8+r9*2] jne .height_loop pop r13 pop r12 pop rbp 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 rbp mov rbp, rsp push r12 push r13 mov r12, r8 ; src2 movsxd r13, r9d ; i_src2_stride mov r10, rdx ; src1 movsxd r11, ecx ; i_src1_stride mov r8, rdi ; dst movsxd r9, esi ; i_dst_stride movsxd rax, dword [rbp+16] ; i_heightALIGN 4.height_loop movq mm0, [r10] pavgb mm0, [r12] movq [r8], mm0 dec rax lea r10, [r10+r11] lea r12, [r12+r13] lea r8, [r8+r9] jne .height_loop pop r13 pop r12 pop rbp 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 rbp mov rbp, rsp push r12 push r13 mov r12, r8 ; src2 movsxd r13, r9d ; i_src2_stride mov r10, rdx ; src1 movsxd r11, ecx ; i_src1_stride mov r8, rdi ; dst movsxd r9, esi ; i_dst_stride movsxd rax, dword [rbp+16] ; i_heightALIGN 4.height_loop movq mm0, [r10 ] movq mm1, [r10+8] pavgb mm0, [r12 ] pavgb mm1, [r12+8] movq [r8 ], mm0 movq [r8+8], mm1 dec rax lea r10, [r10+r11] lea r12, [r12+r13] lea r8, [r8+r9] jne .height_loop pop r13 pop r12 pop rbp 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 rbp mov rbp, rsp push r12 push r13 mov r12, r8 ; src2 movsxd r13, r9d ; i_src2_stride mov r10, rdx ; src1 movsxd r11, ecx ; i_src1_stride mov r8, rdi ; dst movsxd r9, esi ; i_dst_stride movsxd rax, dword [rbp+16] ; i_heightALIGN 4.height_loop movdqu xmm0, [r10] pavgb xmm0, [r12] movdqu [r8], xmm0 dec rax lea r10, [r10+r11] lea r12, [r12+r13] lea r8, [r8+r9] jne .height_loop pop r13 pop r12 pop rbp 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: mov eax, r8d ; i_height mov r8, rdi ; src movsxd r9, esi ; i_src_stride mov r10, rdx ; dst movsxd r11, ecx ; i_dst_stride ALIGN 4.height_loop mov ecx, [r8] mov edx, [r8+r9] mov [r10], ecx mov [r10+r11], edx lea r8, [r8+r9*2] lea r10, [r10+r11*2] dec eax dec eax jne .height_loop 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: mov eax, r8d ; i_height mov r8, rdi ; src movsxd r9, esi ; i_src_stride mov r10, rdx ; dst movsxd r11, ecx ; i_dst_stride lea rcx, [r9+r9*2] ; 3 * i_src_stride lea rdx, [r11+r11*2] ; 3 * i_dst_strideALIGN 4.height_loop movq mm0, [r8] movq mm1, [r8+r9] movq mm2, [r8+r9*2] movq mm3, [r8+rcx] movq [r10], mm0 movq [r10+r11], mm1 movq [r10+r11*2], mm2 movq [r10+rdx], mm3 lea r8, [r8+r9*4] lea r10, [r10+r11*4] sub eax, byte 4 jnz .height_loop 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: mov eax, r8d ; i_height mov r8, rdi ; src movsxd r9, esi ; i_src_stride mov r10, rdx ; dst movsxd r11, ecx ; i_dst_stride lea rcx, [r9+r9*2] ; 3 * i_src_stride lea rdx, [r11+r11*2] ; 3 * i_dst_strideALIGN 4.height_loop movq mm0, [r8] movq mm1, [r8+8] movq mm2, [r8+r9] movq mm3, [r8+r9+8] movq mm4, [r8+r9*2] movq mm5, [r8+r9*2+8] movq mm6, [r8+rcx] movq mm7, [r8+rcx+8] movq [r10], mm0 movq [r10+8], mm1 movq [r10+r11], mm2 movq [r10+r11+8], mm3 movq [r10+r11*2], mm4 movq [r10+r11*2+8], mm5 movq [r10+rdx], mm6 movq [r10+rdx+8], mm7 lea r8, [r8+r9*4] lea r10, [r10+r11*4] sub eax, byte 4 jnz .height_loop 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: mov eax, r8d ; i_height mov r8, rdi ; src movsxd r9, esi ; i_src_stride mov r10, rdx ; dst movsxd r11, ecx ; i_dst_strideALIGN 4.height_loop movdqu xmm0, [r8] movdqu xmm1, [r8+r9] movdqu [r10], xmm0 movdqu [r10+r11], xmm1 dec eax dec eax lea r8, [r8+r9*2] lea r10, [r10+r11*2] jnz .height_loop retSECTION .rodataALIGN 16eights times 4 dw 8thirty2s times 4 dw 32SECTION .datax264_mc_chroma_sse_dx: dw 0x264_mc_chroma_sse_dy: dw 0SECTION .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: push r12 push r13 mov [x264_mc_chroma_sse_dx], r8d mov [x264_mc_chroma_sse_dy], r9d pxor mm3, mm3 pshufw mm5, [x264_mc_chroma_sse_dx], 0 ; mm5 - dx pshufw mm6, [x264_mc_chroma_sse_dy], 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 mov r8, rdi ; src movsxd r9, esi ; i_src_stride mov r10, rdx ; dst movsxd r11, ecx ; i_dst_stride movsxd r12, dword [rsp+24] ; i_height movsxd r13, dword [rsp+32] ; i_width mov rax, r8 mov rdi, r10 mov rcx, r9 mov rdx, r12ALIGN 4.height_loop movd mm1, [rax+rcx] movd mm0, [rax] 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, [rax+1] movd mm1, [rax+rcx+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 [rdi], mm0 add rax, rcx add rdi, r11 ; i_dst_stride dec rdx jnz .height_loop mov rax, r13 ; i_width sub rax, 8 jnz .finish ; width != 8 so assume 4 mov r13, rax ; i_width mov rdi, r10 ; dst mov rax, r8 ; src mov rdx, r12 ; i_height add rdi, 4 add rax, 4 jmp .height_loop.finish pop r13 pop r12 ret⌨️ 快捷键说明
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