;/*****************************************************************************; *; *  XVID MPEG-4 VIDEO CODEC; *	 mmx yv12 to rgb24 conversion ; *; *  Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org>; *; *  This file is part of XviD, a free MPEG-4 video encoder/decoder; *; *  XviD 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  02111-1307 USA; *; *  Under section 8 of the GNU General Public License, the copyright; *  holders of XVID explicitly forbid distribution in the following; *  countries:; *; *    - Japan; *    - United States of America; *; *  Linking XviD statically or dynamically with other modules is making a; *  combined work based on XviD.  Thus, the terms and conditions of the; *  GNU General Public License cover the whole combination.; *; *  As a special exception, the copyright holders of XviD give you; *  permission to link XviD with independent modules that communicate with; *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the; *  license terms of these independent modules, and to copy and distribute; *  the resulting combined work under terms of your choice, provided that; *  every copy of the combined work is accompanied by a complete copy of; *  the source code of XviD (the version of XviD used to produce the; *  combined work), being distributed under the terms of the GNU General; *  Public License plus this exception.  An independent module is a module; *  which is not derived from or based on XviD.; *; *  Note that people who make modified versions of XviD are not obligated; *  to grant this special exception for their modified versions; it is; *  their choice whether to do so.  The GNU General Public License gives; *  permission to release a modified version without this exception; this; *  exception also makes it possible to release a modified version which; *  carries forward this exception.; *; * $Id: yv12_to_rgb24_mmx.asm,v 1.4 2002/11/17 00:20:30 edgomez Exp $; *; ****************************************************************************/;;------------------------------------------------------------------------------; NB:	n contrary to the c implementation this code does the conversion;      using direct calculations. Input data width must be a multiple of 8;      and height must be even.;      This implementation is less precise than the c version but is;      more than twice as fast :-);------------------------------------------------------------------------------	BITS 32%macro cglobal 1 	%ifdef PREFIX		global _%1 		%define %1 _%1	%else		global %1	%endif%endmacro%define SCALEBITS 6ALIGN 16SECTION .dataY_SUB		dw  16,  16,  16,  16U_SUB		dw 128, 128, 128, 128V_SUB		dw 128, 128, 128, 128Y_MUL		dw  74,  74,  74,  74UG_MUL		dw  25,  25,  25,  25VG_MUL		dw  52,  52,  52,  52UB_MUL		dw 129, 129, 129, 129VR_MUL		dw 102, 102, 102, 102ALIGN 16	SECTION .text;------------------------------------------------------------------------------; ; void yv12_to_rgb24_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);;;------------------------------------------------------------------------------	cglobal yv12_to_rgb24_mmxyv12_to_rgb24_mmx:	push ebx	push esi	push edi	push ebp	;  local vars alloc%define localsize 72%define TEMP_Y1  esp%define TEMP_Y2  esp + 8%define TEMP_G1  esp + 16%define TEMP_G2  esp + 24%define TEMP_B1  esp + 32%define TEMP_B2  esp + 40%define y_dif    esp + 48%define dst_dif	 esp + 52%define uv_dif   esp + 56%define height   esp + 60%define width_8  esp + 64%define height_2 esp + 68	sub esp, localsize	mov eax, [esp + 52 + localsize]	; height -> eax	cmp eax, 0x00	jge near dont_flip		; flip?		neg eax	mov [height], eax	mov esi, [esp + 48 + localsize]	; width -> esi	mov ebp, [esp + 40 + localsize]	; y_stride -> ebp	mov ebx, ebp	shl ebx, 1			; 2 * y_stride -> ebx	neg ebx	sub ebx, esi			; y_dif -> eax	mov [y_dif], ebx	sub eax, 1			; height - 1 -> eax	mul ebp				; (height - 1) * y_stride -> ebp	mov ecx, eax	mov eax, [esp + 28 + localsize]	; y_src -> eax	add eax, ecx			; y_src -> eax	mov ebx, eax	sub ebx, ebp			; y_src2 -> ebx	mov ecx, [esp + 24 + localsize]	; dst_stride -> ecx	mov edx, ecx	add ecx, edx	shl edx, 2	add ecx, edx			; 6 * dst_stride -> ecx	mov edx, ecx	sub ecx, esi	shl esi, 1	sub ecx, esi			; 6 * dst_stride - 3 * width -> ecx	mov [dst_dif], ecx	mov esi, [esp + 20 + localsize]	; dst -> esi	mov edi, esi	shr edx, 1	add edi, edx			; dst2 -> edi	mov ebp, [esp + 48 + localsize]	; width -> ebp	mov ecx, ebp			; width -> ecx	shr ecx, 1	shr ebp, 3			; width / 8 -> ebp	mov [width_8], ebp	mov ebp, [esp + 44 + localsize]	; uv_stride -> ebp	mov edx, ebp	neg edx	sub edx, ecx	mov [uv_dif], edx	mov edx, ebp	mov ebp, eax	mov eax, [height]		; height -> eax	shr eax, 1			; height / 2 -> eax	mov ecx, [esp + 32 + localsize]	; u_src -> ecx	sub eax, 1	mul edx	add ecx, eax	mov edx, [esp + 36 + localsize]	; v_src -> edx	add edx, eax	mov eax, ebp	mov ebp, [height]		; height -> ebp	shr ebp, 1			; height / 2 -> ebp	pxor mm7, mm7			; clear mm7	jmp y_loopdont_flip:	mov esi, [esp + 48 + localsize]	; width -> esi	mov ebp, [esp + 40 + localsize]	; y_stride -> ebp	mov ebx, ebp	shl ebx, 1			; 2 * y_stride -> ebx	sub ebx, esi			; y_dif -> ebx	mov [y_dif], ebx	mov eax, [esp + 28 + localsize]	; y_src -> eax	mov ebx, eax	add ebx, ebp			; y_src2 -> ebp	mov ecx, [esp + 24 + localsize]	; dst_stride -> ecx	mov edx, ecx	add ecx, edx	shl edx, 2	add ecx, edx			; 6 * dst_stride -> ecx	mov edx, ecx	sub ecx, esi	shl esi, 1	sub ecx, esi			; 6 * dst_stride - 3 * width -> ecx	mov [dst_dif], ecx	mov esi, [esp + 20 + localsize]	; dst -> esi	mov edi, esi	shr edx, 1	add edi, edx			; dst2 -> edi	mov ebp, [esp + 48 + localsize]	; width -> ebp	mov ecx, ebp			; width -> ecx	shr ecx, 1	shr ebp, 3			; width / 8 -> ebp	mov [width_8], ebp	mov ebp, [esp + 44 + localsize]	; uv_stride -> ebp	sub ebp, ecx	mov [uv_dif], ebp	mov ecx, [esp + 32 + localsize]	; u_src -> ecx	mov edx, [esp + 36 + localsize]	; v_src -> edx	mov ebp, [esp + 52 + localsize]	; height -> ebp	shr ebp, 1			; height / 2 -> ebp	pxor mm7, mm7y_loop:	mov [height_2], ebp	mov ebp, [width_8]x_loop:	movd mm2, [ecx]	movd mm3, [edx]	punpcklbw mm2, mm7		; u3u2u1u0 -> mm2	punpcklbw mm3, mm7		; v3v2v1v0 -> mm3	psubsw mm2, [U_SUB]		; U - 128	psubsw mm3, [V_SUB]		; V - 128	movq mm4, mm2	movq mm5, mm3	pmullw mm2, [UG_MUL]	pmullw mm3, [VG_MUL]	movq mm6, mm2			; u3u2u1u0 -> mm6	punpckhwd mm2, mm2		; u3u3u2u2 -> mm2	punpcklwd mm6, mm6		; u1u1u0u0 -> mm6	pmullw mm4, [UB_MUL]		; B_ADD -> mm4	movq mm0, mm3	punpckhwd mm3, mm3		; v3v3v2v2 -> mm2	punpcklwd mm0, mm0		; v1v1v0v0 -> mm6	paddsw mm2, mm3	paddsw mm6, mm0	pmullw mm5, [VR_MUL]		; R_ADD -> mm5	movq mm0, [eax]			; y7y6y5y4y3y2y1y0 -> mm0	movq mm1, mm0	punpckhbw mm1, mm7		; y7y6y5y4 -> mm1	punpcklbw mm0, mm7		; y3y2y1y0 -> mm0	psubsw mm0, [Y_SUB]		; Y - Y_SUB	psubsw mm1, [Y_SUB]		; Y - Y_SUB	pmullw mm1, [Y_MUL] 	pmullw mm0, [Y_MUL]	movq [TEMP_Y2], mm1		; y7y6y5y4 -> mm3	movq [TEMP_Y1], mm0		; y3y2y1y0 -> mm7	psubsw mm1, mm2			; g7g6g5g4 -> mm1	psubsw mm0, mm6			; g3g2g1g0 -> mm0	psraw mm1, SCALEBITS	psraw mm0, SCALEBITS	packuswb mm0, mm1		;g7g6g5g4g3g2g1g0 -> mm0	movq [TEMP_G1], mm0	movq mm0, [ebx]			; y7y6y5y4y3y2y1y0 -> mm0	movq mm1, mm0	punpckhbw mm1, mm7		; y7y6y5y4 -> mm1	punpcklbw mm0, mm7		; y3y2y1y0 -> mm0	psubsw mm0, [Y_SUB]		; Y - Y_SUB	psubsw mm1, [Y_SUB]		; Y - Y_SUB	pmullw mm1, [Y_MUL] 	pmullw mm0, [Y_MUL]	movq mm3, mm1	psubsw mm1, mm2			; g7g6g5g4 -> mm1	movq mm2, mm0	psubsw mm0, mm6			; g3g2g1g0 -> mm0	psraw mm1, SCALEBITS	psraw mm0, SCALEBITS	packuswb mm0, mm1		; g7g6g5g4g3g2g1g0 -> mm0	movq [TEMP_G2], mm0	movq mm0, mm4	punpckhwd mm4, mm4		; u3u3u2u2 -> mm2	punpcklwd mm0, mm0		; u1u1u0u0 -> mm6	movq mm1, mm3			; y7y6y5y4 -> mm1	paddsw mm3, mm4			; b7b6b5b4 -> mm3	movq mm7, mm2			; y3y2y1y0 -> mm7	paddsw mm2, mm0			; b3b2b1b0 -> mm2	psraw mm3, SCALEBITS	psraw mm2, SCALEBITS	packuswb mm2, mm3		; b7b6b5b4b3b2b1b0 -> mm2	movq [TEMP_B2], mm2	movq mm3, [TEMP_Y2]	movq mm2, [TEMP_Y1]	movq mm6, mm3			; TEMP_Y2 -> mm6	paddsw mm3, mm4			; b7b6b5b4 -> mm3	movq mm4, mm2			; TEMP_Y1 -> mm4	paddsw mm2, mm0			; b3b2b1b0 -> mm2	psraw mm3, SCALEBITS	psraw mm2, SCALEBITS	packuswb mm2, mm3		; b7b6b5b4b3b2b1b0 -> mm2	movq [TEMP_B1], mm2	movq mm0, mm5	punpckhwd mm5, mm5		; v3v3v2v2 -> mm5	punpcklwd mm0, mm0		; v1v1v0v0 -> mm0	paddsw mm1, mm5			; r7r6r5r4 -> mm1	paddsw mm7, mm0			; r3r2r1r0 -> mm7	psraw mm1, SCALEBITS	psraw mm7, SCALEBITS	packuswb mm7, mm1		; r7r6r5r4r3r2r1r0 -> mm7 (TEMP_R2)	paddsw mm6, mm5			; r7r6r5r4 -> mm6	paddsw mm4, mm0			; r3r2r1r0 -> mm4	psraw mm6, SCALEBITS	psraw mm4, SCALEBITS	packuswb mm4, mm6		; r7r6r5r4r3r2r1r0 -> mm4 (TEMP_R1)		movq mm0, [TEMP_B1]	movq mm1, [TEMP_G1]	movq mm6, mm7	movq mm2, mm0	punpcklbw mm2, mm4		; r3b3r2b2r1b1r0b0 -> mm2	punpckhbw mm0, mm4		; r7b7r6b6r5b5r4b4 -> mm0	pxor mm7, mm7	movq mm3, mm1	punpcklbw mm1, mm7		; 0g30g20g10g0 -> mm1	punpckhbw mm3, mm7		; 0g70g60g50g4 -> mm3	movq mm4, mm2	punpcklbw mm2, mm1		; 0r1g1b10r0g0b0 -> mm2	punpckhbw mm4, mm1		; 0r3g3b30r2g2b2 -> mm4	movq mm5, mm0	punpcklbw mm0, mm3		; 0r5g5b50r4g4b4 -> mm0	punpckhbw mm5, mm3		; 0r7g7b70r6g6b6 -> mm5	movd [esi], mm2				psrlq mm2, 32	movd [esi + 3], mm2	movd [esi + 6], mm4			psrlq mm4, 32	movd [esi + 9], mm4	movd [esi + 12], mm0		psrlq mm0, 32	movd [esi + 15], mm0	movd [esi + 18], mm5		psrlq mm5, 32	movd [esi + 21], mm5		movq mm0, [TEMP_B2]	movq mm1, [TEMP_G2]	movq mm2, mm0	punpcklbw mm2, mm6		; r3b3r2b2r1b1r0b0 -> mm2	punpckhbw mm0, mm6		; r7b7r6b6r5b5r4b4 -> mm0	movq mm3, mm1 	punpcklbw mm1, mm7		; 0g30g20g10g0 -> mm1	punpckhbw mm3, mm7		; 0g70g60g50g4 -> mm3	movq mm4, mm2	punpcklbw mm2, mm1		; 0r1g1b10r0g0b0 -> mm2	punpckhbw mm4, mm1		; 0r3g3b30r2g2b2 -> mm4	movq mm5, mm0	punpcklbw mm0, mm3		; 0r5g5b50r4g4b4 -> mm0	punpckhbw mm5, mm3		; 0r7g7b70r6g6b6 -> mm5	movd [edi], mm2	psrlq mm2, 32	movd [edi + 3], mm2	movd [edi + 6], mm4	psrlq mm4, 32	movd [edi + 9], mm4	movd [edi + 12], mm0	psrlq mm0, 32	movd [edi + 15], mm0	movd [edi + 18], mm5	psrlq mm5, 32	movd [edi + 21], mm5	add esi, 24	add edi, 24	add eax, 8	add ebx, 8	add ecx, 4	add edx, 4	dec ebp	jnz near x_loop	add esi, [dst_dif]	add edi, [dst_dif]	add eax, [y_dif]	add ebx, [y_dif]	add ecx, [uv_dif]	add edx, [uv_dif]	mov ebp, [height_2]	dec ebp	jnz near y_loop	emms	;; Local vars deallocation	add esp, localsize%undef TEMP_Y1%undef TEMP_Y2%undef TEMP_G1%undef TEMP_G2%undef TEMP_B1%undef TEMP_B2%undef y_dif%undef dst_dif%undef uv_dif%undef height%undef width_8%undef height_2%undef localsize	pop ebp	pop edi	pop esi	pop ebx	ret