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00033 #include "mmsgui/fb/mmsfbconv.h"
00034
00035 #ifdef __HAVE_PF_ARGB4444__
00036 #ifdef __HAVE_PF_RGB32__
00037
00038 #include "mmstools/mmstools.h"
00039
00040 void mmsfb_blit_blend_argb4444_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 ARGB4444 to RGB32.\n");
00046 firsttime = false;
00047 }
00048
00049
00050 unsigned short int *src = (unsigned short 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 >> 1;
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 short int OLDSRC = (*src) + 1;
00073 unsigned short 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 short int *line_end = src + sw;
00082 while (src < line_end) {
00083
00084 register unsigned short int SRC = *src;
00085
00086
00087 register unsigned int A = SRC >> 12;
00088 if (A == 0x0f) {
00089
00090 if (SRC==OLDSRC) {
00091
00092 *dst = d;
00093 dst++;
00094 src++;
00095 continue;
00096 }
00097
00098
00099 d = 0xff000000
00100 | ((SRC & 0x0f00) << 12)
00101 | ((SRC & 0x00f0) << 8)
00102 | ((SRC & 0x000f) << 4);
00103 *dst = d;
00104
00105
00106 dst++;
00107 src++;
00108 OLDDST = (*dst) + 1;
00109 OLDSRC = SRC;
00110 continue;
00111 }
00112 else
00113 if (A) {
00114
00115 register unsigned int DST = *dst;
00116
00117 if ((DST==OLDDST)&&(SRC==OLDSRC)) {
00118
00119 *dst = d;
00120 dst++;
00121 src++;
00122 continue;
00123 }
00124 OLDDST = DST;
00125 OLDSRC = SRC;
00126
00127 register unsigned int SA= 0x10 - A;
00128 unsigned int r = (DST << 8) >> 24;
00129 unsigned int g = (DST << 16) >> 24;
00130 unsigned int b = DST & 0xff;
00131
00132
00133 r = (SA * r) >> 4;
00134 g = (SA * g) >> 4;
00135 b = (SA * b) >> 4;
00136
00137
00138 r += (A*(SRC & 0x0f00)) >> 8;
00139 g += (A*(SRC & 0x00f0)) >> 4;
00140 b += A*(SRC & 0x000f);
00141 d = 0xff000000
00142 | ((r >> 8) ? 0xff0000 : (r << 16))
00143 | ((g >> 8) ? 0xff00 : (g << 8))
00144 | ((b >> 8) ? 0xff : b);
00145 *dst = d;
00146 }
00147
00148 dst++;
00149 src++;
00150 }
00151
00152
00153 src+= src_pitch_diff;
00154 dst+= dst_pitch_diff;
00155 }
00156 }
00157
00158 #endif
00159 #endif