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00033 #include "mmsgui/fb/mmsfbconv.h"
00034
00035 #ifdef __HAVE_PF_ARGB__
00036 #ifdef __HAVE_PF_AiRGB__
00037
00038 #include "mmstools/mmstools.h"
00039
00040 void mmsfb_blit_blend_airgb_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) {
00042
00043 static bool firsttime = true;
00044 if (firsttime) {
00045 printf("DISKO: Using accelerated blend AiRGB to ARGB.\n");
00046 firsttime = false;
00047 }
00048
00049
00050 unsigned int *src = (unsigned int *)extbuf->ptr;
00051 int src_pitch = extbuf->pitch;
00052
00053
00054 int src_pitch_pix = src_pitch >> 2;
00055 int dst_pitch_pix = dst_pitch >> 2;
00056 src+= sx + sy * src_pitch_pix;
00057 dst+= dx + dy * dst_pitch_pix;
00058
00059
00060 if (dst_pitch_pix - dx < sw - sx)
00061 sw = dst_pitch_pix - dx - sx;
00062 if (dst_height - dy < sh - sy)
00063 sh = dst_height - dy - sy;
00064 if ((sw <= 0)||(sh <= 0))
00065 return;
00066
00067 unsigned int OLDDST = (*dst) + 1;
00068 unsigned int OLDSRC = (*src) + 1;
00069 unsigned int *src_end = src + src_pitch_pix * sh;
00070 int src_pitch_diff = src_pitch_pix - sw;
00071 int dst_pitch_diff = dst_pitch_pix - sw;
00072 register unsigned int d = 0;
00073
00074
00075 while (src < src_end) {
00076
00077 unsigned int *line_end = src + sw;
00078 while (src < line_end) {
00079
00080 register unsigned int SRC = *src;
00081
00082
00083 register unsigned int A = 0xff - (SRC >> 24);
00084 if (A == 0xff) {
00085
00086 *dst = SRC & 0x00ffffff;
00087 }
00088 else
00089 if (A) {
00090
00091 register unsigned int DST = *dst;
00092
00093 if ((DST==OLDDST)&&(SRC==OLDSRC)) {
00094
00095 *dst = d;
00096 dst++;
00097 src++;
00098 continue;
00099 }
00100 OLDDST = DST;
00101 OLDSRC = SRC;
00102
00103 register unsigned int SA= 0x100 - A;
00104 unsigned int a = A;
00105 unsigned int r = (DST << 8) >> 24;
00106 unsigned int g = (DST << 16) >> 24;
00107 unsigned int b = DST & 0xff;
00108
00109
00110 a = (SA * (0x100 - a)) >> 8;
00111 r = (SA * r) >> 8;
00112 g = (SA * g) >> 8;
00113 b = (SA * b) >> 8;
00114
00115
00116 a += A;
00117 r += (SRC << 8) >> 24;
00118 g += (SRC << 16) >> 24;
00119 b += SRC & 0xff;
00120 d = ((r >> 8) ? 0xff0000 : (r << 16))
00121 | ((g >> 8) ? 0xff00 : (g << 8))
00122 | ((b >> 8) ? 0xff : b);
00123 if (!(a >> 8)) d |= (0x100 - a) << 24;
00124 *dst = d;
00125 }
00126
00127 dst++;
00128 src++;
00129 }
00130
00131
00132 src+= src_pitch_diff;
00133 dst+= dst_pitch_diff;
00134 }
00135 }
00136
00137 #endif
00138 #endif