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;/***************************************************************************** |
;------------------------------------------------------------------------------ |
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; * |
; |
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; * XVID MPEG-4 VIDEO CODEC |
; This file is part of XviD, a free MPEG-4 video encoder/decoder |
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; * mmx yv12 to rgb24 conversion |
; |
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; * |
; XviD is free software; you can redistribute it and/or modify it |
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; * Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org> |
; under the terms of the GNU General Public License as published by |
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; * |
; the Free Software Foundation; either version 2 of the License, or |
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; * This file is part of XviD, a free MPEG-4 video encoder/decoder |
; (at your option) any later version. |
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; * |
; |
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; * XviD is free software; you can redistribute it and/or modify it |
; XviD is distributed in the hope that it will be useful, but |
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; * under the terms of the GNU General Public License as published by |
; WITHOUT ANY WARRANTY; without even the implied warranty of |
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; * the Free Software Foundation; either version 2 of the License, or |
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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; * (at your option) any later version. |
; GNU General Public License for more details. |
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; * |
; |
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; * This program is distributed in the hope that it will be useful, |
; You should have received a copy of the GNU General Public License |
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; * but WITHOUT ANY WARRANTY; without even the implied warranty of |
; along with this program; if not, write to the Free Software |
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; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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; * GNU General Public License for more details. |
; |
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; * |
;------------------------------------------------------------------------------ |
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; * You should have received a copy of the GNU General Public License |
;------------------------------------------------------------------------------ |
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; * along with this program; if not, write to the Free Software |
; |
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; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
; yuv_to_rgb24.asm, MMX optimized color conversion |
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; * |
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; * Under section 8 of the GNU General Public License, the copyright |
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; * holders of XVID explicitly forbid distribution in the following |
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; * countries: |
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; * |
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; * - Japan |
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; * - United States of America |
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; * |
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; * Linking XviD statically or dynamically with other modules is making a |
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; * combined work based on XviD. Thus, the terms and conditions of the |
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; * GNU General Public License cover the whole combination. |
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; * |
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; * As a special exception, the copyright holders of XviD give you |
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; * permission to link XviD with independent modules that communicate with |
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; * XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
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; * license terms of these independent modules, and to copy and distribute |
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; * the resulting combined work under terms of your choice, provided that |
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; * every copy of the combined work is accompanied by a complete copy of |
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; * the source code of XviD (the version of XviD used to produce the |
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; * combined work), being distributed under the terms of the GNU General |
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; * Public License plus this exception. An independent module is a module |
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; * which is not derived from or based on XviD. |
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; * |
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; * Note that people who make modified versions of XviD are not obligated |
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; * to grant this special exception for their modified versions; it is |
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; * their choice whether to do so. The GNU General Public License gives |
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; * permission to release a modified version without this exception; this |
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; * exception also makes it possible to release a modified version which |
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; * carries forward this exception. |
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; * |
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; * $Id: yv12_to_rgb24_mmx.asm,v 1.4 2002-11-17 00:20:30 edgomez Exp $ |
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; * |
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; ****************************************************************************/ |
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; |
; |
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; Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org> |
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; |
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; For more information visit the XviD homepage: http://www.xvid.org |
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; |
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;------------------------------------------------------------------------------ |
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;------------------------------------------------------------------------------ |
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; |
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; Revision history : |
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; |
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; 13.12.2001 initial version (Isibaar) |
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; 23.07.2002 Thread safe version (edgomez) |
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; |
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; $Id: yv12_to_rgb24_mmx.asm,v 1.5 2003-02-15 15:22:18 edgomez Exp $ |
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; |
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;------------------------------------------------------------------------------ |
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;------------------------------------------------------------------------------ |
;------------------------------------------------------------------------------ |
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; NB: n contrary to the c implementation this code does the conversion |
; NB: n contrary to the c implementation this code does the conversion |
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; using direct calculations. Input data width must be a multiple of 8 |
; using direct calculations. Input data width must be a multiple of 8 |
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sub ebx, ebp ; y_src2 -> ebx |
sub ebx, ebp ; y_src2 -> ebx |
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mov ecx, [esp + 24 + localsize] ; dst_stride -> ecx |
mov ecx, [esp + 24 + localsize] ; dst_stride -> ecx |
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mov edx, ecx |
shl ecx, 1 |
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add ecx, edx |
mov edx, ecx ; 2 * dst_stride -> ecx |
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shl edx, 2 |
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add ecx, edx ; 6 * dst_stride -> ecx |
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mov edx, ecx |
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sub ecx, esi |
sub ecx, esi |
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shl esi, 1 |
shl esi, 1 |
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sub ecx, esi ; 6 * dst_stride - 3 * width -> ecx |
sub ecx, esi ; 2 * dst_stride - 3 * width -> ecx |
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mov [dst_dif], ecx |
mov [dst_dif], ecx |
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add ebx, ebp ; y_src2 -> ebp |
add ebx, ebp ; y_src2 -> ebp |
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mov ecx, [esp + 24 + localsize] ; dst_stride -> ecx |
mov ecx, [esp + 24 + localsize] ; dst_stride -> ecx |
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mov edx, ecx |
shl ecx, 1 |
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add ecx, edx |
mov edx, ecx ; 2 * dst_stride -> ecx |
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shl edx, 2 |
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add ecx, edx ; 6 * dst_stride -> ecx |
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mov edx, ecx |
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sub ecx, esi |
sub ecx, esi |
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shl esi, 1 |
shl esi, 1 |
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sub ecx, esi ; 6 * dst_stride - 3 * width -> ecx |
sub ecx, esi ; 2 * dst_stride - 3 * width -> ecx |
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mov [dst_dif], ecx |
mov [dst_dif], ecx |
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