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MythTV
0.26-pre
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MythTV
0.26-pre
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00001 #include "util-osd.h" 00002 #include "dithertable.h" 00003 00004 #if HAVE_BIGENDIAN 00005 #define R_OI 1 00006 #define G_OI 2 00007 #define B_OI 3 00008 #define A_OI 0 00009 #else 00010 #define R_OI 2 00011 #define G_OI 1 00012 #define B_OI 0 00013 #define A_OI 3 00014 #endif 00015 00016 void yuv888_to_yv12(VideoFrame *frame, MythImage *osd_image, 00017 int left, int top, int right, int bottom) 00018 { 00019 bool c_aligned = !(left % ALIGN_C || right % ALIGN_C); 00020 bool misaligned = (top % ALIGN_C || bottom % ALIGN_C) || !c_aligned; 00021 bool mmx_aligned = false; 00022 #ifdef MMX 00023 mmx_aligned = !(left % ALIGN_X_MMX || right % ALIGN_X_MMX); 00024 #endif 00025 00026 if (misaligned) 00027 { 00028 LOG(VB_GENERAL, LOG_ERR, 00029 QString("OSD image size is odd. This shouldn't happen.")); 00030 } 00031 else if (mmx_aligned) 00032 { 00033 mmx_yuv888_to_yv12(frame, osd_image, left, top, right, bottom); 00034 } 00035 else if (c_aligned) 00036 { 00037 #ifdef MMX 00038 LOG(VB_GENERAL, LOG_WARNING, "MMX available but image not MMX aligned. " 00039 "This shouldn't happen."); 00040 #endif 00041 c_yuv888_to_yv12(frame, osd_image, left, top, right, bottom); 00042 } 00043 } 00044 00045 #define ASM(code) __asm__ __volatile__(code); 00046 void inline mmx_yuv888_to_yv12(VideoFrame *frame, MythImage *osd_image, 00047 int left, int top, int right, int bottom) 00048 { 00049 #ifdef MMX 00050 unsigned char *src1, *src2, *y1, *y2, *u, *v; 00051 int y_wrap, src_wrap, u_wrap, v_wrap, width, height; 00052 00053 width = right - left; 00054 height = bottom - top; 00055 src1 = osd_image->scanLine(top) + (left << 2); 00056 src2 = src1 + osd_image->bytesPerLine(); 00057 src_wrap = (osd_image->bytesPerLine() << 1)- (width << 2); 00058 00059 y1 = frame->buf + frame->offsets[0] + (frame->pitches[0] * top) + left; 00060 y2 = y1 + frame->pitches[0]; 00061 u = frame->buf + frame->offsets[1] + 00062 (frame->pitches[1] * (top >> 1)) + (left >> 1); 00063 v = frame->buf + frame->offsets[2] + 00064 (frame->pitches[2] * (top >> 1)) + (left >> 1); 00065 y_wrap = (frame->pitches[0] << 1) - width; 00066 u_wrap = frame->pitches[1] - (width >> 1); 00067 v_wrap = frame->pitches[2] - (width >> 1); 00068 00069 static long long MMX_MAX = 0xFFFFFFFFFFFFFFFFLL; 00070 static long long MMX_MIN = 0x0000000000000000LL; 00071 static long long MMX_255 = 0x00FF00FF00FF00FFLL; 00072 static long long tmp_u, tmp_v, tmp_a; 00073 00074 for (int row = 0; row < height; row += 2) 00075 { 00076 for (int col = 0; col < (width >> 3); col++) 00077 { 00078 // here be pain 00079 // unpack and luminance - row 1 01234567 00080 ASM("movq %0, %%mm1"::"m"(src1[0])) // mm1: A2Y2U2V2 A1Y1U1V1 .t...... 00081 ASM("movq %mm1, %mm2") // mm2: A2Y2U2V2 A1Y1U1V1 .tt..... 00082 ASM("punpckhbw %0, %%mm1"::"m"(src1[8])) // mm1: A4A2Y4Y2 U4U2V4V2 .tt..... 00083 ASM("punpcklbw %0, %%mm2"::"m"(src1[8])) // mm2: A3A1Y3Y1 U3U1V3V1 .tt..... 00084 ASM("movq %mm2, %mm0") // mm0: A3A1Y3Y1 U3U1V3V1 ttt..... 00085 ASM("punpckhbw %mm1, %mm2") // mm2: A4A3A2A1 Y4Y3Y2Y1 .tA..... AY stage 1 00086 ASM("punpcklbw %mm1, %mm0") // mm0: U4U3U2U1 V4V3V2V1 U.A..... UV stage 1 00087 ASM("movq %0, %%mm3"::"m"(src1[16])) // mm3: A6Y6U6V6 A5Y5U5V5 U.At.... 00088 ASM("movq %mm3, %mm4") // mm4: A6Y6U6V6 A5YU55V5 U.Att... 00089 ASM("punpckhbw %0, %%mm3"::"m"(src1[24])) // mm3: A8A6Y8Y6 U8U6V8V6 U.Att... 00090 ASM("punpcklbw %0, %%mm4"::"m"(src1[24])) // mm4: A7A5Y7Y5 U7U5V7V5 U.Att... 00091 ASM("movq %mm4, %mm1") // mm1: A7A5Y7Y5 U7U5V7V5 UtAtt... 00092 ASM("punpckhbw %mm3, %mm1") // mm1: A8A7A6A5 Y8Y7Y6Y5 UtAtt... AY stage 2 00093 ASM("punpcklbw %mm3, %mm4") // mm4: U8U7U6U5 V8V7V6V5 UtA.V... UV stage 2 00094 ASM("movq %mm2, %mm3") // mm3: A4A3A2A1 Y4Y3Y2Y1 UtAtV... 00095 ASM("punpckldq %mm1, %mm3") // mm3: Y8Y7Y6Y5 Y4Y3Y2Y1 UtAYV... 8-1 Y 00096 ASM("punpckhdq %mm1, %mm2") // mm2: A8A7A6A5 A4A3A2A1 UtAYV... 8-1 A 00097 ASM("movq %0, %%mm7"::"m"(MMX_MAX)) // mm7: FFFFFFFF FFFFFFFF U.AYV..t 255 00098 ASM("psubusb %mm2, %mm7") // mm7: A8A7A6A5 A4A3A2A1 U.AYV..t 8-1 (255-a) 00099 ASM("movq %mm7, %mm6") // mm6: A8A7A6A5 A4A3A2A1 U.AYV.tt 8-1 (255-a) 00100 ASM("movq %mm7, %mm2") // mm2: A8A7A6A5 A4A3A2A1 U.AYV.tt 8-1 (255-a) 00101 ASM("punpckhbw %0, %%mm7"::"m"(MMX_MIN)) // mm7: 00A800A7 00A600A4 U.AYV.tt 8-5 (255-a) 00102 ASM("punpcklbw %0, %%mm6"::"m"(MMX_MIN)) // mm6: 00A400A3 00A200A1 U.AYV.tt 4-1 (255-a) 00103 ASM("movq %0, %%mm5"::"m"(*y1)) // mm5: D8D7D6D5 D4D3D2D1 U.AYVttt 8-1 dest 00104 ASM("movq %mm5, %mm1") // mm1: D8D7D6D5 D4D3D2D1 UtAYVttt 00105 ASM("punpckhbw %0, %%mm5"::"m"(MMX_MIN)) // mm5: 00D800D7 00D600D5 UtAYVttt 00106 ASM("punpcklbw %0, %%mm1"::"m"(MMX_MIN)) // mm1: 00D400D3 00D200D1 UtAYVttt 00107 ASM("pmullw %mm7, %mm5") // mm5: D8D8D7D7 D6D6D5D5 UtAYVttt 8-5 dest*(255-a) 00108 ASM("pmullw %mm6, %mm1") // mm1: D4D4D3D3 D2D2D1D1 UtAYVtt. 4-1 dest*(255-a) 00109 ASM("psrlw $8, %mm5") // mm5: 00D800D7 00D600D5 UtAYVt.. 8-5 (dest*(255-a))/256 00110 ASM("psrlw $8, %mm1") // mm1: 00D400D3 00D200D1 UtAYVt.. 4-1 (dest*(255-a))/256 00111 ASM("packuswb %mm5, %mm1") // mm1: D8D7D6D5 D4D3D2D1 UtAYV... 8-1 (dest*(255-a))/256 00112 ASM("paddusb %mm1, %mm3") // mm3: D8D7D6D5 D4D3D2D1 U.AYV... 8-1 (dest*(255-a))/256+y 00113 ASM("movq %%mm3, %0":"=m"(*y1):) // U.A.V... row 1 y 00114 ASM("movq %mm0, %mm1") // mm1: U4U3U2U1 V4V3V2V1 uuA.v... 00115 ASM("punpckhdq %mm4, %mm0") // mm0: U8U7U6U5 U4U3U2U1 UuA.v... 8-1 u 00116 ASM("punpckldq %mm4, %mm1") // mm1: V8V7V6V5 V4V3V2V1 UVA..... 9-1 v 00117 // store u,v and for sub-sampling 00118 ASM("movq %%mm0, %0":"=m"(tmp_u):) 00119 ASM("movq %%mm1, %0":"=m"(tmp_v):) 00120 ASM("movq %%mm2, %0":"=m"(tmp_a):) 00121 // unpack and luminance - row 2 00122 ASM("movq %0, %%mm1"::"m"(src2[0])) // mm1: A2Y2U2V2 A1Y1U1V1 .t...... 00123 ASM("movq %mm1, %mm2") // mm2: A2Y2U2V2 A1Y1U1V1 .tt..... 00124 ASM("punpckhbw %0, %%mm1"::"m"(src2[8])) // mm1: A4A2Y4Y2 U4U2V4V2 .tt..... 00125 ASM("punpcklbw %0, %%mm2"::"m"(src2[8])) // mm2: A3A1Y3Y1 U3U1V3V1 .tt..... 00126 ASM("movq %mm2, %mm0") // mm0: A3A1Y3Y1 U3U1V3V1 ttt..... 00127 ASM("punpckhbw %mm1, %mm2") // mm2: A4A3A2A1 Y4Y3Y2Y1 .tA..... AY stage 1 00128 ASM("punpcklbw %mm1, %mm0") // mm0: U4U3U2U1 V4V3V2V1 U.A..... UV stage 1 00129 ASM("movq %0, %%mm3"::"m"(src2[16])) // mm3: A6Y6U6V6 A5Y5U5V5 U.At.... 00130 ASM("movq %mm3, %mm4") // mm4: A6Y6U6V6 A5YU55V5 U.Att... 00131 ASM("punpckhbw %0, %%mm3"::"m"(src2[24])) // mm3: A8A6Y8Y6 U8U6V8V6 U.Att... 00132 ASM("punpcklbw %0, %%mm4"::"m"(src2[24])) // mm4: A7A5Y7Y5 U7U5V7V5 U.Att... 00133 ASM("movq %mm4, %mm1") // mm1: A7A5Y7Y5 U7U5V7V5 UtAtt... 00134 ASM("punpckhbw %mm3, %mm1") // mm1: A8A7A6A5 Y8Y7Y6Y5 UtAtt... AY stage 2 00135 ASM("punpcklbw %mm3, %mm4") // mm4: U8U7U6U5 V8V7V6V5 UtA.V... UV stage 2 00136 ASM("movq %mm2, %mm3") // mm3: A4A3A2A1 Y4Y3Y2Y1 UtAtV... 00137 ASM("punpckldq %mm1, %mm3") // mm3: Y8Y7Y6Y5 Y4Y3Y2Y1 UtAYV... 8-1 Y 00138 ASM("punpckhdq %mm1, %mm2") // mm2: A8A7A6A5 A4A3A2A1 UtAYV... 8-1 A 00139 ASM("movq %0, %%mm7"::"m"(MMX_MAX)) // mm7: FFFFFFFF FFFFFFFF U.AYV..t 255 00140 ASM("psubusb %mm2, %mm7") // mm7: A8A7A6A5 A4A3A2A1 U.AYV..t 8-1 (255-a) 00141 ASM("movq %mm7, %mm6") // mm6: A8A7A6A5 A4A3A2A1 U.AYV.tt 8-1 (255-a) 00142 ASM("movq %mm7, %mm2") // mm2: A8A7A6A5 A4A3A2A1 U.AYV.tt 8-1 (255-a) 00143 ASM("punpckhbw %0, %%mm7"::"m"(MMX_MIN)) // mm7: 00A800A7 00A600A4 U.AYV.tt 8-5 (255-a) 00144 ASM("punpcklbw %0, %%mm6"::"m"(MMX_MIN)) // mm6: 00A400A3 00A200A1 U.AYV.tt 4-1 (255-a) 00145 ASM("movq %0, %%mm5"::"m"(*y2)) // mm5: D8D7D6D5 D4D3D2D1 U.AYVttt 8-1 dest 00146 ASM("movq %mm5, %mm1") // mm1: D8D7D6D5 D4D3D2D1 UtAYVttt 00147 ASM("punpckhbw %0, %%mm5"::"m"(MMX_MIN)) // mm5: 00D800D7 00D600D5 UtAYVttt 00148 ASM("punpcklbw %0, %%mm1"::"m"(MMX_MIN)) // mm1: 00D400D3 00D200D1 UtAYVttt 00149 ASM("pmullw %mm7, %mm5") // mm5: D8D8D7D7 D6D6D5D5 UtAYVttt 8-5 dest*(255-a) 00150 ASM("pmullw %mm6, %mm1") // mm1: D4D4D3D3 D2D2D1D1 UtAYVtt. 4-1 dest*(255-a) 00151 ASM("psrlw $8, %mm5") // mm5: 00D800D7 00D600D5 UtAYVt.. 8-5 (dest*(255-a))/256 00152 ASM("psrlw $8, %mm1") // mm1: 00D400D3 00D200D1 UtAYVt.. 4-1 (dest*(255-a))/256 00153 ASM("packuswb %mm5, %mm1") // mm1: D8D7D6D5 D4D3D2D1 UtAYV... 8-1 (dest*(255-a))/256 00154 ASM("paddusb %mm1, %mm3") // mm3: D8D7D6D5 D4D3D2D1 U.AYV... 8-1 (dest*(255-a))/256+y 00155 ASM("movq %%mm3, %0":"=m"(*y2):) // U.A.V... row 1 y 00156 ASM("movq %mm0, %mm1") // mm1: U4U3U2U1 V4V3V2V1 uuA.v... 00157 ASM("punpckhdq %mm4, %mm0") // mm0: U8U7U6U5 U4U3U2U1 UuA.v... 8-1 u 00158 ASM("punpckldq %mm4, %mm1") // mm1: V8V7V6V5 V4V3V2V1 UVA..... 9-1 v 00159 // subsample alpha 00160 ASM("movq %mm2, %mm3") // mm3: A8A7A6A5 A4A3A2A1 UVAA.... copy row 2 a 00161 ASM("movq %0, %%mm4"::"m"(tmp_a)) // mm4: A8A7A6A5 A4A3A2A1 UVAA.... row 1 a 00162 ASM("movq %mm4, %mm5") // mm5: A8A7A6A5 A4A3A2A1 UVAAAA.. copy row 1 a 00163 ASM("psrlw $8, %mm2") // mm2: 00A800A6 00A400A2 UVAAAA.. row 2 00164 ASM("pand %0, %%mm3"::"m"(MMX_255)) // mm3: 00A700A5 00A300A1 UVAAAA.. row 2 00165 ASM("psrlw $8, %mm4") // mm4: 00A800A6 00A400A2 UVAAAA.. row 1 00166 ASM("pand %0, %%mm5"::"m"(MMX_255)) // mm5: 00A700A5 00A300A1 UVAAAA.. row 1 00167 ASM("paddusw %mm5, %mm4") // add 00168 ASM("paddusw %mm4, %mm3") 00169 ASM("paddusw %mm3, %mm2") 00170 ASM("psrlw $2, %mm2") // mm2: xxA4xxA3 xxA2xxA1 UVA..... /4 00171 ASM("pand %0, %%mm2"::"m"(MMX_255)) // mm2: 00A400A3 00A200A1 UVA..... 00172 // subsample u 00173 ASM("movq %mm0, %mm3") // mm3: U8U7U6U5 U4U3U2U1 UVAU.... copy row 2 u 00174 ASM("movq %0, %%mm4"::"m"(tmp_u)) // mm4: U8U7U6U5 U4U3U2U1 UVAUU... row 1 u 00175 ASM("movq %mm4, %mm5") // mm5: U8U7U6U5 U4U3U2U1 UVAUUU.. copy row 1 u 00176 ASM("psrlw $8, %mm0") // mm0: 00U800U6 00U400U2 UVAUUU.. row 2 00177 ASM("pand %0, %%mm3"::"m"(MMX_255)) // mm3: 00U700U5 00U300U1 UVAUUU.. row 2 00178 ASM("psrlw $8, %mm4") // mm4: 00U800U6 00U400U2 UVAUUU.. row 1 00179 ASM("pand %0, %%mm5"::"m"(MMX_255)) // mm5: 00U700U5 00U300U1 UVAUUU.. row 1 00180 ASM("paddusw %mm5, %mm4") // add 00181 ASM("paddusw %mm4, %mm3") 00182 ASM("paddusw %mm3, %mm0") 00183 ASM("psrlw $2, %mm0") // mm0: xxU4xxU3 xxU2xxU1 UVA..... /4 00184 ASM("pand %0, %%mm0"::"m"(MMX_255)) // mm0: 00U400U3 00U200U1 UVA..... 00185 // blend u 00186 ASM("movd %0, %%mm3"::"m"(*u)) // mm3: 00000000 D4D3D2D1 UVAt.... 4-1 dest u 00187 ASM("punpcklbw %0, %%mm3"::"m"(MMX_MIN)) // mm3: 00D400D3 00D200D1 UVAt.... 4-1 dest u 00188 ASM("pmullw %mm2, %mm3") // mm3: 00D400D3 00D200D1 UVAt.... destu * (255-a) 00189 ASM("psrlw $8, %mm3") // mm3: 00D400D3 00D200D1 UVAt.... (destu*(255-a))/256 00190 ASM("paddusb %mm3, %mm0") // mm0: xxR4xxR3 xxR2xxR1 UVA..... (destu*(255-a))/256 + u 00191 ASM("packuswb %mm1, %mm0") // mm0: xxxxxxxx U4U3U2U1 UVA..... (destu*(255-a))/256 + u 00192 ASM("movd %%mm0, %0":"=m"(*u):) // output .VA..... 00193 // subsample v 00194 ASM("movq %mm1, %mm3") // mm3: U8U7U6U5 U4U3U2U1 .VAV.... copy row 2 v 00195 ASM("movq %0, %%mm4"::"m"(tmp_v)) // mm4: U8U7U6U5 U4U3U2U1 .VAVV... row 1 v 00196 ASM("movq %mm4, %mm5") // mm5: U8U7U6U5 U4U3U2U1 .VAVVV.. copy row 1 v 00197 ASM("psrlw $8, %mm1") // mm1: 00U800U6 00U400U2 .VAVVV.. row 2 00198 ASM("pand %0, %%mm3"::"m"(MMX_255)) // mm3: 00U700U5 00U300U1 .VAVVV.. row 2 00199 ASM("psrlw $8, %mm4") // mm4: 00U800U6 00U400U2 .VAVVV.. row 1 00200 ASM("pand %0, %%mm5"::"m"(MMX_255)) // mm5: 00U700U5 00U300U1 .VAVVV.. row 1 00201 ASM("paddusw %mm5, %mm4") // add 00202 ASM("paddusw %mm4, %mm3") 00203 ASM("paddusw %mm3, %mm1") 00204 ASM("psrlw $2, %mm1") // mm1: xxU4xxU3 xxU2xxU1 .VA..... /4 00205 ASM("pand %0, %%mm1"::"m"(MMX_255)) // mm1: 00U400U3 00U200U1 .VA..... 00206 // blend v 00207 ASM("movd %0, %%mm3"::"m"(*v)) // mm3: 00000000 D4D3D2D1 .VAt.... 4-1 dest v 00208 ASM("punpcklbw %0, %%mm3"::"m"(MMX_MIN)) // mm3: 00D400D3 00D200D1 .VAt.... 4-1 dest v 00209 ASM("pmullw %mm2, %mm3") // mm3: 00D400D3 00D200D1 .V.t.... destv * (255-a) 00210 ASM("psrlw $8, %mm3") // mm3: 00D400D3 00D200D1 .V.t.... (destv*(255-a))/256 00211 ASM("paddusb %mm3, %mm1") // mm1: xxR4xxR3 xxR2xxR1 .V...... (destv*(255-a))/256 + v 00212 ASM("packuswb %mm2, %mm1") // mm1: xxxxxxxx V4V3V2V1 .V...... (destv*(255-a))/256 + v 00213 ASM("movd %%mm1, %0":"=m"(*v):) // output ........ 00214 00215 src1 += 32; src2 += 32; y1 += 8; y2 += 8; u += 4; v += 4; 00216 } 00217 y1 += y_wrap; y2 += y_wrap; u+= u_wrap; v += v_wrap; 00218 src1 += src_wrap; src2 += src_wrap; 00219 } 00220 ASM("emms") 00221 #endif 00222 } 00223 00224 void inline c_yuv888_to_yv12(VideoFrame *frame, MythImage *osd_image, 00225 int left, int top, int right, int bottom) 00226 { 00227 unsigned char *udest, *vdest, *src1, *src2; 00228 int alpha1, alpha2, alpha3, alpha4, src_wrap, y_wrap, width, height; 00229 unsigned char *y1, *y2, *y3, *y4, *a1, *a2, *a3, *a4, *r1, *r2, *r3, *r4; 00230 unsigned char *g1, *g2, *g3, *g4, *b1, *b2, *b3, *b4; 00231 00232 width = right - left; 00233 height = bottom - top; 00234 00235 udest = frame->buf + frame->offsets[1]; 00236 vdest = frame->buf + frame->offsets[2]; 00237 udest += (frame->pitches[1] * (top >> 1)) + (left >> 1); 00238 vdest += (frame->pitches[2] * (top >> 1)) + (left >> 1); 00239 00240 y1 = frame->buf + frame->offsets[0] + (frame->pitches[0] * top) + left; 00241 y3 = frame->buf + frame->offsets[0] + (frame->pitches[0] * (top + 1)) + left; 00242 y2 = y1 + 1; y4 = y3 + 1; 00243 00244 src1 = osd_image->scanLine(top) + (left << 2); 00245 src2 = osd_image->scanLine(top + 1) + (left << 2); 00246 b1 = src1 + B_OI; b2 = b1 + 4; b3 = src2 + B_OI; b4 = b3 + 4; 00247 g1 = src1 + G_OI; g2 = g1 + 4; g3 = src2 + G_OI; g4 = g3 + 4; 00248 r1 = src1 + R_OI; r2 = r1 + 4; r3 = src2 + R_OI; r4 = r3 + 4; 00249 a1 = src1 + A_OI; a2 = a1 + 4; a3 = src2 + A_OI; a4 = a3 + 4; 00250 src_wrap = (osd_image->bytesPerLine() << 1) - (width << 2); 00251 y_wrap = (frame->pitches[0] << 1) - width; 00252 00253 for (int row = 0; row < height; row += 2) 00254 { 00255 for (int col = 0; col < (width >> 1); col++) 00256 { 00257 alpha1 = 255 - *a1; alpha2 = 255 - *a2; 00258 alpha3 = 255 - *a3; alpha4 = 255 - *a4; 00259 00260 *y1 = ((*y1 * alpha1) >> 8) + *r1; 00261 *y2 = ((*y2 * alpha2) >> 8) + *r2; 00262 *y3 = ((*y3 * alpha3) >> 8) + *r3; 00263 *y4 = ((*y4 * alpha4) >> 8) + *r4; 00264 00265 alpha1 = (alpha1 + alpha2 + alpha3 + alpha4) >> 2; 00266 udest[col] = ((udest[col] * alpha1) >> 8) + 00267 ((*g1 + *g2 + *g3 + *g4) >> 2); 00268 vdest[col] = ((vdest[col] * alpha1) >> 8) + 00269 ((*b1 + *b2 + *b3 + *b4) >> 2); 00270 00271 y1 += 2; y2 += 2; y3 += 2; y4 += 2; 00272 r1 += 8; r2 += 8; r3 += 8; r4 += 8; 00273 g1 += 8; g2 += 8; g3 += 8; g4 += 8; 00274 b1 += 8; b2 += 8; b3 += 8; b4 += 8; 00275 a1 += 8; a2 += 8; a3 += 8; a4 += 8; 00276 00277 } 00278 r1 += src_wrap; r2 += src_wrap; r3 += src_wrap; r4 += src_wrap; 00279 g1 += src_wrap; g2 += src_wrap; g3 += src_wrap; g4 += src_wrap; 00280 b1 += src_wrap; b2 += src_wrap; b3 += src_wrap; b4 += src_wrap; 00281 a1 += src_wrap; a2 += src_wrap; a3 += src_wrap; a4 += src_wrap; 00282 y1 += y_wrap; y2 += y_wrap; y3 += y_wrap; y4 += y_wrap; 00283 udest += frame->pitches[1]; 00284 vdest += frame->pitches[2]; 00285 } 00286 } 00287 00288 void yuv888_to_i44(unsigned char *dest, MythImage *osd_image, QSize dst_size, 00289 int left, int top, int right, int bottom, bool ifirst) 00290 { 00291 int width, ashift, amask, ishift, imask, src_wrap, dst_wrap; 00292 unsigned char *src, *alpha, *dst; 00293 const unsigned char *dmp; 00294 00295 width = right - left; 00296 ashift = ifirst ? 0 : 4; 00297 amask = ifirst ? 0x0f : 0xf0; 00298 ishift = ifirst ? 4 : 0; 00299 imask = ifirst ? 0xf0 : 0x0f; 00300 00301 src = osd_image->scanLine(top) + (left << 2) + R_OI; 00302 alpha = osd_image->scanLine(top) + (left << 2) + A_OI; 00303 dst = dest + dst_size.width() * top + left; 00304 dst_wrap = dst_size.width() - width; 00305 src_wrap = osd_image->bytesPerLine() - (width << 2); 00306 00307 for (int row = top; row < bottom; row++) 00308 { 00309 dmp = DM[row & (DM_HEIGHT - 1)]; 00310 for (int col = left; col < right; col++) 00311 { 00312 int grey; 00313 00314 grey = *src + ((dmp[col & (DM_WIDTH - 1)] << 2) >> 4); 00315 grey = (grey - (grey >> 4)) >> 4; 00316 00317 *dst = (((*alpha >> 4) << ashift) & amask) | 00318 (((grey) << ishift) & imask); 00319 00320 alpha += 4; 00321 src += 4; 00322 dst++; 00323 } 00324 alpha += src_wrap; 00325 src += src_wrap; 00326 dst += dst_wrap; 00327 } 00328 } 00329
1.7.6.1
