;/**************************************************************************; *; *	XVID MPEG-4 VIDEO CODEC; *	mmx yuv planar to yuyv/uyvy; *; *	This program is an implementation of a part of one or more MPEG-4; *	Video tools as specified in ISO/IEC 14496-2 standard.  Those intending; *	to use this software module in hardware or software products are; *	advised that its use may infringe existing patents or copyrights, and; *	any such use would be at such party's own risk.  The original; *	developer of this software module and his/her company, and subsequent; *	editors and their companies, will have no liability for use of this; *	software or modifications or derivatives thereof.; *; *	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., 675 Mass Ave, Cambridge, MA 02139, USA.; *; *************************************************************************/;/**************************************************************************; *; *	History:; *; *	05.12.2001	initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>; *; *************************************************************************/bits 32section .data%macro cglobal 1 	%ifdef PREFIX		global _%1 		%define %1 _%1	%else		global %1	%endif%endmacroalign 16section .text;===========================================================================;; void yv12_to_uyvy_mmx(;				uint8_t * dst,;				int dst_stride,;				uint8_t * y_src,;				uint8_t * u_src,;				uint8_t * v_src,;				int y_stride,;				int uv_stride,;				int width,;				int height);;;	width must be multiple of 8;	~10% faster than plain c;;===========================================================================align 16cglobal yv12_to_yuyv_mmxyv12_to_yuyv_mmx		push ebx		push ecx		push esi		push edi					push ebp		; STACK BASE = 20		; global constants		mov ebx, [esp + 20 + 32]	; width		mov eax, [esp + 20 + 8]		; dst_stride		sub eax, ebx				; 		add eax, eax				; eax = 2*(dst_stride - width)		push eax					; [esp + 4] = dst_dif						; STACK BASE = 24		shr ebx, 3					; ebx = width / 8		mov edi, [esp + 24 + 4]		; dst		; --------- flip -------------		mov	ebp, [esp + 24 + 36]		test ebp, ebp		jl .flip		mov esi, [esp + 24 + 12]	; y_src		mov ecx, [esp + 24 + 16]	; u_src		mov edx, [esp + 24 + 20]	; v_src		shr ebp, 1					; y = height / 2		jmp short .yloop.flip		neg ebp			; height = -height				mov	eax, [esp + 24 + 24]	; y_stride		lea	edx, [ebp - 1]			; edx = height - 1		mul	edx		mov esi, [esp + 24 + 12]	; y_src		add esi, eax				; y_src += (height - 1) * y_stride		shr ebp, 1					; y = height / 2		mov	eax, [esp + 24 + 28]	; uv_stride		lea	edx, [ebp - 1]			; edx = height/2 - 1		mul	edx		mov ecx, [esp + 24 + 16]	; u_src		mov edx, [esp + 24 + 20]	; v_src		add ecx, eax				; u_src += (height/2 - 1) * uv_stride		add edx, eax				; v_src += (height/2 - 1) * uv_stride		neg	dword [esp + 24 + 24]	; y_stride = -y_stride		neg dword [esp + 24 + 28]	; uv_stride = -uv_stride	.yloop		xor eax, eax			; x = 0;.xloop1				movd mm0, [ecx+4*eax]		; [    |uuuu]				movd mm1, [edx+4*eax]		; [    |vvvv]				movq mm2, [esi+8*eax]		; [yyyy|yyyy]				punpcklbw mm0, mm1			; [vuvu|vuvu]				movq mm3, mm2				punpcklbw mm2, mm0			; [vyuy|vyuy]				punpckhbw mm3, mm0			; [vyuy|vyuy]				movq [edi], mm2				movq [edi+8], mm3				inc eax				add edi, 16										cmp eax, ebx				jb	.xloop1		add edi, [esp + 0]		; dst += dst_dif		add esi, [esp + 24 + 24]	; y_src += y_stride				xor eax, eax.xloop2				movd mm0, [ecx+4*eax]		; [    |uuuu]				movd mm1, [edx+4*eax]		; [    |vvvv]				movq mm2, [esi+8*eax]		; [yyyy|yyyy]				punpcklbw mm0, mm1			; [vuvu|vuvu]				movq mm3, mm2				punpcklbw mm2, mm0			; [vyuy|vyuy]				punpckhbw mm3, mm0			; [vyuy|vyuy]				movq [edi], mm2				movq [edi+8], mm3				inc eax				add edi, 16														cmp eax, ebx				jb	.xloop2		add edi, [esp + 0]			; dst += dst_dif		add esi, [esp + 24 + 24]	; y_src += y_stride		add ecx, [esp + 24 + 28]	; u_src += uv_stride		add edx, [esp + 24 + 28]	; v_src += uv_stride		dec	ebp				; y--		jnz	near .yloop		emms		add esp, 4		pop ebp		pop edi		pop esi		pop ecx		pop ebx		ret;===========================================================================;; void yv12_to_uyvy_mmx(;				uint8_t * dst,;				int dst_stride,;				uint8_t * y_src,;				uint8_t * u_src,;				uint8_t * v_src,;				int y_stride,;				int uv_stride,;				int width,;				int height);;;	width must be multiple of 8;	~10% faster than plain c;;===========================================================================align 16cglobal yv12_to_uyvy_mmxyv12_to_uyvy_mmx		push ebx		push ecx		push esi		push edi					push ebp		; STACK BASE = 20		; global constants		mov ebx, [esp + 20 + 32]	; width		mov eax, [esp + 20 + 8]		; dst_stride		sub eax, ebx				; 		add eax, eax				; eax = 2*(dst_stride - width)		push eax					; [esp + 4] = dst_dif						; STACK BASE = 24		shr ebx, 3					; ebx = width / 8		mov edi, [esp + 24 + 4]		; dst		; --------- flip -------------		mov	ebp, [esp + 24 + 36]		test ebp, ebp		jl .flip		mov esi, [esp + 24 + 12]	; y_src		mov ecx, [esp + 24 + 16]	; u_src		mov edx, [esp + 24 + 20]	; v_src		shr ebp, 1					; y = height / 2		jmp short .yloop.flip		neg ebp			; height = -height				mov	eax, [esp + 24 + 24]	; y_stride		lea	edx, [ebp - 1]			; edx = height - 1		mul	edx		mov esi, [esp + 24 + 12]	; y_src		add esi, eax				; y_src += (height - 1) * y_stride		shr ebp, 1					; y = height / 2		mov	eax, [esp + 24 + 28]	; uv_stride		lea	edx, [ebp - 1]			; edx = height/2 - 1		mul	edx		mov ecx, [esp + 24 + 16]	; u_src		mov edx, [esp + 24 + 20]	; v_src		add ecx, eax				; u_src += (height/2 - 1) * uv_stride		add edx, eax				; v_src += (height/2 - 1) * uv_stride		neg	dword [esp + 24 + 24]	; y_stride = -y_stride		neg dword [esp + 24 + 28]	; uv_stride = -uv_stride	.yloop		xor eax, eax			; x = 0;.xloop1				movd mm0, [ecx+4*eax]		; [    |uuuu]				movd mm1, [edx+4*eax]		; [    |vvvv]				movq mm2, [esi+8*eax]		; [yyyy|yyyy]				punpcklbw mm0, mm1			; [vuvu|vuvu]				movq mm1, mm0				punpcklbw mm0, mm2			; [yvyu|yvyu]				punpckhbw mm1, mm2			; [yvyu|yvyu]				movq [edi], mm0				movq [edi+8], mm1				inc eax				add edi, 16										cmp eax, ebx				jb	.xloop1		add edi, [esp + 0]		; dst += dst_dif		add esi, [esp + 24 + 24]	; y_src += y_stride				xor eax, eax.xloop2				movd mm0, [ecx+4*eax]		; [    |uuuu]				movd mm1, [edx+4*eax]		; [    |vvvv]				movq mm2, [esi+8*eax]		; [yyyy|yyyy]				punpcklbw mm0, mm1			; [vuvu|vuvu]				movq mm1, mm0				punpcklbw mm0, mm2			; [yvyu|yvyu]				punpckhbw mm1, mm2			; [yvyu|yvyu]				movq [edi], mm0				movq [edi+8], mm1				inc eax				add edi, 16														cmp eax, ebx				jb	.xloop2		add edi, [esp + 0]			; dst += dst_dif		add esi, [esp + 24 + 24]	; y_src += y_stride		add ecx, [esp + 24 + 28]	; u_src += uv_stride		add edx, [esp + 24 + 28]	; v_src += uv_stride		dec	ebp				; y--		jnz	near .yloop		emms		add esp, 4		pop ebp		pop edi		pop esi		pop ecx		pop ebx		ret