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00033 #include "mmsgui/fb/mmsfbconv.h"
00034
00035 #ifdef __HAVE_PF_AiRGB__
00036 #ifdef __HAVE_PF_RGB16__
00037
00038 #include "mmstools/mmstools.h"
00039
00040 void mmsfb_blit_blend_airgb_to_rgb16(MMSFBExternalSurfaceBuffer *extbuf, int src_height, int sx, int sy, int sw, int sh,
00041 unsigned short 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 RGB16.\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 >> 1;
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 short 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 short int d;
00073
00074
00075
00076 while (src < src_end) {
00077
00078 unsigned int *line_end = src + sw;
00079 while (src < line_end) {
00080
00081 register unsigned int SRC = *src;
00082
00083
00084 register unsigned int A = SRC >> 24;
00085 if (!A) {
00086
00087 unsigned int r = (SRC << 8) >> 27;
00088 unsigned int g = (SRC << 16) >> 26;
00089 unsigned int b = (SRC & 0xff) >> 3;
00090 *dst = (r << 11)
00091 | (g << 5)
00092 | b;
00093 }
00094 else
00095 if (A < 0xff) {
00096
00097 register unsigned short int DST = *dst;
00098
00099 if ((DST==OLDDST)&&(SRC==OLDSRC)) {
00100
00101 *dst = d;
00102 dst++;
00103 src++;
00104 continue;
00105 }
00106 OLDDST = DST;
00107 OLDSRC = SRC;
00108
00109 register unsigned int SA= 0x100 - A;
00110 unsigned int r = DST >> 11;
00111 unsigned int g = DST & 0x07e0;
00112 unsigned int b = DST & 0x1f;
00113
00114
00115 r = A * r;
00116 g = A * g;
00117 b = (A * b) >> 5;
00118
00119
00120 r += (SA*(SRC & 0xf80000)) >> 19;
00121 g += (SA*(SRC & 0xfc00)) >> 5;
00122 b += (SA*(SRC & 0xf8)) >> 8;
00123 d = ((r & 0xffe000) ? 0xf800 : ((r >> 8) << 11))
00124 | ((g & 0xfff80000) ? 0x07e0 : ((g >> 13) << 5))
00125 | ((b & 0xff00) ? 0x1f : (b >> 3));
00126 *dst = d;
00127 }
00128
00129 dst++;
00130 src++;
00131 }
00132
00133
00134 src+= src_pitch_diff;
00135 dst+= dst_pitch_diff;
00136 }
00137 }
00138
00139 #endif
00140 #endif