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mmsfb_stretchblit_rgb24_to_argb.cpp

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00001 /***************************************************************************
00002  *   Copyright (C) 2005-2007 Stefan Schwarzer, Jens Schneider,             *
00003  *                           Matthias Hardt, Guido Madaus                  *
00004  *                                                                         *
00005  *   Copyright (C) 2007-2008 BerLinux Solutions GbR                        *
00006  *                           Stefan Schwarzer & Guido Madaus               *
00007  *                                                                         *
00008  *   Copyright (C) 2009-2013 BerLinux Solutions GmbH                       *
00009  *                                                                         *
00010  *   Authors:                                                              *
00011  *      Stefan Schwarzer   <stefan.schwarzer@diskohq.org>,                 *
00012  *      Matthias Hardt     <matthias.hardt@diskohq.org>,                   *
00013  *      Jens Schneider     <jens.schneider@diskohq.org>,                   *
00014  *      Guido Madaus       <guido.madaus@diskohq.org>,                     *
00015  *      Patrick Helterhoff <patrick.helterhoff@diskohq.org>,               *
00016  *      René Bählkow       <rene.baehlkow@diskohq.org>                     *
00017  *                                                                         *
00018  *   This library is free software; you can redistribute it and/or         *
00019  *   modify it under the terms of the GNU Lesser General Public            *
00020  *   License version 2.1 as published by the Free Software Foundation.     *
00021  *                                                                         *
00022  *   This library is distributed in the hope that it will be useful,       *
00023  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00024  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00025  *   Lesser General Public License for more details.                       *
00026  *                                                                         *
00027  *   You should have received a copy of the GNU Lesser General Public      *
00028  *   License along with this library; if not, write to the                 *
00029  *   Free Software Foundation, Inc.,                                       *
00030  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
00031  **************************************************************************/
00032 
00033 #include "mmsgui/fb/mmsfbconv.h"
00034 
00035 #ifdef __HAVE_PF_RGB24__
00036 #ifdef __HAVE_PF_ARGB__
00037 
00038 #include "mmstools/mmstools.h"
00039 
00040 void mmsfb_stretchblit_rgb24_to_argb(MMSFBExternalSurfaceBuffer *extbuf, int src_height, int sx, int sy, int sw, int sh,
00041                                      unsigned int *dst, int dst_pitch, int dst_height, int dx, int dy, int dw, int dh,
00042                                      bool antialiasing) {
00043     // first time?
00044     static bool firsttime = true;
00045     if (firsttime) {
00046         printf("DISKO: Using accelerated stretch RGB24 to ARGB.\n");
00047         firsttime = false;
00048     }
00049 
00050     // get the first source ptr/pitch
00051     unsigned char *src = (unsigned char *)extbuf->ptr;
00052     int src_pitch = extbuf->pitch;
00053 
00054     // prepare...
00055     int src_pitch_pix = src_pitch / 3;
00056     int dst_pitch_pix = dst_pitch >> 2;
00057 
00058     // check the surface range
00059     if ((sw <= 0)||(sh <= 0))
00060         return;
00061 
00062     // antialiasing horizontal/vertical/both
00063     bool h_antialiasing = false;
00064     bool v_antialiasing = false;
00065     if (antialiasing) {
00066         h_antialiasing = true;
00067         if (sh != dh)
00068             v_antialiasing = true;
00069     }
00070 
00071     // stretch buffer
00072     stretch_324byte_buffer(h_antialiasing, v_antialiasing,
00073                            src, src_pitch, src_pitch_pix, src_height, sx, sy, sw, sh,
00074                            dst, dst_pitch, dst_pitch_pix, dst_height, dx, dy, dw, dh);
00075 }
00076 
00077 #endif
00078 #endif

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