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00033 #include "mmsgui/fb/mmsfbconv.h"
00034
00035 #ifdef __HAVE_PF_ARGB__
00036 #ifdef __HAVE_PF_RGB32__
00037
00038 #include "mmstools/mmstools.h"
00039
00040 void mmsfb_blit_blend_argb_to_rgb32(MMSFBSurfacePlanes *src_planes, int src_height, int sx, int sy, int sw, int sh,
00041 MMSFBSurfacePlanes *dst_planes, int dst_height, int dx, int dy) {
00042
00043 static bool firsttime = true;
00044 if (firsttime) {
00045 printf("DISKO: Using accelerated blend ARGB to RGB32.\n");
00046 firsttime = false;
00047 }
00048
00049
00050 unsigned int *src = (unsigned int *)src_planes->ptr;
00051 int src_pitch = src_planes->pitch;
00052
00053
00054 unsigned int *dst = (unsigned int *)dst_planes->ptr;
00055 int dst_pitch = dst_planes->pitch;
00056
00057
00058 int src_pitch_pix = src_pitch >> 2;
00059 int dst_pitch_pix = dst_pitch >> 2;
00060 src+= sx + sy * src_pitch_pix;
00061 dst+= dx + dy * dst_pitch_pix;
00062
00063
00064 if (dst_pitch_pix - dx < sw - sx)
00065 sw = dst_pitch_pix - dx - sx;
00066 if (dst_height - dy < sh - sy)
00067 sh = dst_height - dy - sy;
00068 if ((sw <= 0)||(sh <= 0))
00069 return;
00070
00071 unsigned int OLDDST = (*dst) + 1;
00072 unsigned int OLDSRC = (*src) + 1;
00073 unsigned int *src_end = src + src_pitch_pix * sh;
00074 int src_pitch_diff = src_pitch_pix - sw;
00075 int dst_pitch_diff = dst_pitch_pix - sw;
00076 register unsigned int d;
00077
00078
00079 while (src < src_end) {
00080
00081 unsigned int *line_end = src + sw;
00082 while (src < line_end) {
00083
00084 register unsigned int SRC = *src;
00085
00086
00087 register unsigned int A = SRC >> 24;
00088 if (A == 0xff) {
00089
00090 *dst = SRC | 0xff000000;
00091 }
00092 else
00093 if (A) {
00094
00095 register unsigned int DST = *dst;
00096
00097 if ((DST==OLDDST)&&(SRC==OLDSRC)) {
00098
00099 *dst = d;
00100 dst++;
00101 src++;
00102 continue;
00103 }
00104 OLDDST = DST;
00105 OLDSRC = SRC;
00106
00107 register unsigned int SA= 0x100 - A;
00108 unsigned int r = (DST << 8) >> 24;
00109 unsigned int g = (DST << 16) >> 24;
00110 unsigned int b = DST & 0xff;
00111
00112
00113 r = (SA * r) >> 8;
00114 g = (SA * g) >> 8;
00115 b = (SA * b) >> 8;
00116
00117
00118 r += (A*(SRC & 0xff0000)) >> 24;
00119 g += (A*(SRC & 0xff00)) >> 16;
00120 b += (A*(SRC & 0xff)) >> 8;
00121 d = 0xff000000
00122 | ((r >> 8) ? 0xff0000 : (r << 16))
00123 | ((g >> 8) ? 0xff00 : (g << 8))
00124 | ((b >> 8) ? 0xff : b);
00125 *dst = d;
00126 }
00127
00128 dst++;
00129 src++;
00130 }
00131
00132
00133 src+= src_pitch_diff;
00134 dst+= dst_pitch_diff;
00135 }
00136 }
00137
00138 #endif
00139 #endif