45770bd005ab21748fe72cc95efeff4c397e88a9
[ffmpeg.git] / postproc / rgb2rgb.c
1 /*
2  *
3  *  rgb2rgb.c, Software RGB to RGB convertor
4  *  pluralize by Software PAL8 to RGB convertor
5  *               Software YUV to YUV convertor
6  *               Software YUV to RGB convertor
7  *  Written by Nick Kurshev.
8  *  palette & yuv & runtime cpu stuff by Michael (michaelni@gmx.at) (under GPL)
9  */
10 #include <inttypes.h>
11 #include "../config.h"
12 #include "rgb2rgb.h"
13 #include "swscale.h"
14 #include "../cpudetect.h"
15 #include "../mangle.h"
16 #include "../bswap.h"
17 #include "../libvo/fastmemcpy.h"
18
19 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
20
21 void (*rgb24to32)(const uint8_t *src,uint8_t *dst,unsigned src_size);
22 void (*rgb24to16)(const uint8_t *src,uint8_t *dst,unsigned src_size);
23 void (*rgb24to15)(const uint8_t *src,uint8_t *dst,unsigned src_size);
24 void (*rgb32to24)(const uint8_t *src,uint8_t *dst,unsigned src_size);
25 void (*rgb32to16)(const uint8_t *src,uint8_t *dst,unsigned src_size);
26 void (*rgb32to15)(const uint8_t *src,uint8_t *dst,unsigned src_size);
27 void (*rgb15to16)(const uint8_t *src,uint8_t *dst,unsigned src_size);
28 void (*rgb15to24)(const uint8_t *src,uint8_t *dst,unsigned src_size);
29 void (*rgb15to32)(const uint8_t *src,uint8_t *dst,unsigned src_size);
30 void (*rgb16to15)(const uint8_t *src,uint8_t *dst,unsigned src_size);
31 void (*rgb16to24)(const uint8_t *src,uint8_t *dst,unsigned src_size);
32 void (*rgb16to32)(const uint8_t *src,uint8_t *dst,unsigned src_size);
33 //void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, unsigned src_size);
34 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, unsigned src_size);
35 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, unsigned src_size);
36 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, unsigned src_size);
37 void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, unsigned src_size);
38 //void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, unsigned src_size);
39 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, unsigned src_size);
40 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, unsigned src_size);
41
42 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
43         unsigned int width, unsigned int height,
44         int lumStride, int chromStride, int dstStride);
45 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
46         unsigned int width, unsigned int height,
47         int lumStride, int chromStride, int dstStride);
48 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
49         unsigned int width, unsigned int height,
50         int lumStride, int chromStride, int dstStride);
51 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
52         unsigned int width, unsigned int height,
53         int lumStride, int chromStride, int srcStride);
54 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
55         unsigned int width, unsigned int height,
56         int lumStride, int chromStride, int srcStride);
57 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height, int srcStride, int dstStride);
58 void (*interleaveBytes)(uint8_t *src1, uint8_t *src2, uint8_t *dst,
59                             unsigned width, unsigned height, int src1Stride,
60                             int src2Stride, int dstStride);
61 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
62                         uint8_t *dst1, uint8_t *dst2,
63                         unsigned width, unsigned height,
64                         int srcStride1, int srcStride2,
65                         int dstStride1, int dstStride2);
66 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
67                         uint8_t *dst,
68                         unsigned width, unsigned height,
69                         int srcStride1, int srcStride2,
70                         int srcStride3, int dstStride);
71
72 #if defined(ARCH_X86) || defined(ARCH_X86_64)
73 static const uint64_t mmx_null  __attribute__((aligned(8))) = 0x0000000000000000ULL;
74 static const uint64_t mmx_one   __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
75 static const uint64_t mask32b  attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
76 static const uint64_t mask32g  attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
77 static const uint64_t mask32r  attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
78 static const uint64_t mask32   __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
79 static const uint64_t mask3216br __attribute__((aligned(8)))=0x00F800F800F800F8ULL;
80 static const uint64_t mask3216g  __attribute__((aligned(8)))=0x0000FC000000FC00ULL;
81 static const uint64_t mask3215g  __attribute__((aligned(8)))=0x0000F8000000F800ULL;
82 static const uint64_t mul3216  __attribute__((aligned(8))) = 0x2000000420000004ULL;
83 static const uint64_t mul3215  __attribute__((aligned(8))) = 0x2000000820000008ULL;
84 static const uint64_t mask24b  attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
85 static const uint64_t mask24g  attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
86 static const uint64_t mask24r  attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
87 static const uint64_t mask24l  __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
88 static const uint64_t mask24h  __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
89 static const uint64_t mask24hh  __attribute__((aligned(8))) = 0xffff000000000000ULL;
90 static const uint64_t mask24hhh  __attribute__((aligned(8))) = 0xffffffff00000000ULL;
91 static const uint64_t mask24hhhh  __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
92 static const uint64_t mask15b  __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
93 static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
94 static const uint64_t mask15s  __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
95 static const uint64_t mask15g  __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
96 static const uint64_t mask15r  __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
97 #define mask16b mask15b
98 static const uint64_t mask16g  __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
99 static const uint64_t mask16r  __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
100 static const uint64_t red_16mask  __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
101 static const uint64_t green_16mask __attribute__((aligned(8)))= 0x000007e0000007e0ULL;
102 static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
103 static const uint64_t red_15mask  __attribute__((aligned(8))) = 0x00007c000000f800ULL;
104 static const uint64_t green_15mask __attribute__((aligned(8)))= 0x000003e0000007e0ULL;
105 static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
106
107 #ifdef FAST_BGR2YV12
108 static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
109 static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
110 static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
111 #else
112 static const uint64_t bgr2YCoeff  attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
113 static const uint64_t bgr2UCoeff  attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
114 static const uint64_t bgr2VCoeff  attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
115 #endif
116 static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
117 static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
118 static const uint64_t w1111       attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
119
120 #if 0
121 static volatile uint64_t __attribute__((aligned(8))) b5Dither;
122 static volatile uint64_t __attribute__((aligned(8))) g5Dither;
123 static volatile uint64_t __attribute__((aligned(8))) g6Dither;
124 static volatile uint64_t __attribute__((aligned(8))) r5Dither;
125
126 static uint64_t __attribute__((aligned(8))) dither4[2]={
127         0x0103010301030103LL,
128         0x0200020002000200LL,};
129
130 static uint64_t __attribute__((aligned(8))) dither8[2]={
131         0x0602060206020602LL,
132         0x0004000400040004LL,};
133 #endif
134 #endif
135
136 #define RGB2YUV_SHIFT 8
137 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
138 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
139 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
140 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
141 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
142 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
143 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
144 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
145 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
146
147 //Note: we have C, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
148 //Plain C versions
149 #undef HAVE_MMX
150 #undef HAVE_MMX2
151 #undef HAVE_3DNOW
152 #undef HAVE_SSE2
153 #define RENAME(a) a ## _C
154 #include "rgb2rgb_template.c"
155
156 #if defined(ARCH_X86) || defined(ARCH_X86_64)
157
158 //MMX versions
159 #undef RENAME
160 #define HAVE_MMX
161 #undef HAVE_MMX2
162 #undef HAVE_3DNOW
163 #undef HAVE_SSE2
164 #define RENAME(a) a ## _MMX
165 #include "rgb2rgb_template.c"
166
167 //MMX2 versions
168 #undef RENAME
169 #define HAVE_MMX
170 #define HAVE_MMX2
171 #undef HAVE_3DNOW
172 #undef HAVE_SSE2
173 #define RENAME(a) a ## _MMX2
174 #include "rgb2rgb_template.c"
175
176 //3DNOW versions
177 #undef RENAME
178 #define HAVE_MMX
179 #undef HAVE_MMX2
180 #define HAVE_3DNOW
181 #undef HAVE_SSE2
182 #define RENAME(a) a ## _3DNOW
183 #include "rgb2rgb_template.c"
184
185 #endif //ARCH_X86 || ARCH_X86_64
186
187 /*
188  rgb15->rgb16 Original by Strepto/Astral
189  ported to gcc & bugfixed : A'rpi
190  MMX2, 3DNOW optimization by Nick Kurshev
191  32bit c version, and and&add trick by Michael Niedermayer
192 */
193
194 void sws_rgb2rgb_init(int flags){
195 #if defined(ARCH_X86) || defined(ARCH_X86_64)
196         if(flags & SWS_CPU_CAPS_MMX2){
197                 rgb15to16= rgb15to16_MMX2;
198                 rgb15to24= rgb15to24_MMX2;
199                 rgb15to32= rgb15to32_MMX2;
200                 rgb16to24= rgb16to24_MMX2;
201                 rgb16to32= rgb16to32_MMX2;
202                 rgb16to15= rgb16to15_MMX2;
203                 rgb24to16= rgb24to16_MMX2;
204                 rgb24to15= rgb24to15_MMX2;
205                 rgb24to32= rgb24to32_MMX2;
206                 rgb32to16= rgb32to16_MMX2;
207                 rgb32to15= rgb32to15_MMX2;
208                 rgb32to24= rgb32to24_MMX2;
209                 rgb24tobgr15= rgb24tobgr15_MMX2;
210                 rgb24tobgr16= rgb24tobgr16_MMX2;
211                 rgb24tobgr24= rgb24tobgr24_MMX2;
212                 rgb32tobgr32= rgb32tobgr32_MMX2;
213                 rgb32tobgr16= rgb32tobgr16_MMX2;
214                 rgb32tobgr15= rgb32tobgr15_MMX2;
215                 yv12toyuy2= yv12toyuy2_MMX2;
216                 yv12touyvy= yv12touyvy_MMX2;
217                 yuv422ptoyuy2= yuv422ptoyuy2_MMX2;
218                 yuy2toyv12= yuy2toyv12_MMX2;
219 //              uyvytoyv12= uyvytoyv12_MMX2;
220 //              yvu9toyv12= yvu9toyv12_MMX2;
221                 planar2x= planar2x_MMX2;
222                 rgb24toyv12= rgb24toyv12_MMX2;
223                 interleaveBytes= interleaveBytes_MMX2;
224                 vu9_to_vu12= vu9_to_vu12_MMX2;
225                 yvu9_to_yuy2= yvu9_to_yuy2_MMX2;
226         }else if(flags & SWS_CPU_CAPS_3DNOW){
227                 rgb15to16= rgb15to16_3DNOW;
228                 rgb15to24= rgb15to24_3DNOW;
229                 rgb15to32= rgb15to32_3DNOW;
230                 rgb16to24= rgb16to24_3DNOW;
231                 rgb16to32= rgb16to32_3DNOW;
232                 rgb16to15= rgb16to15_3DNOW;
233                 rgb24to16= rgb24to16_3DNOW;
234                 rgb24to15= rgb24to15_3DNOW;
235                 rgb24to32= rgb24to32_3DNOW;
236                 rgb32to16= rgb32to16_3DNOW;
237                 rgb32to15= rgb32to15_3DNOW;
238                 rgb32to24= rgb32to24_3DNOW;
239                 rgb24tobgr15= rgb24tobgr15_3DNOW;
240                 rgb24tobgr16= rgb24tobgr16_3DNOW;
241                 rgb24tobgr24= rgb24tobgr24_3DNOW;
242                 rgb32tobgr32= rgb32tobgr32_3DNOW;
243                 rgb32tobgr16= rgb32tobgr16_3DNOW;
244                 rgb32tobgr15= rgb32tobgr15_3DNOW;
245                 yv12toyuy2= yv12toyuy2_3DNOW;
246                 yv12touyvy= yv12touyvy_3DNOW;
247                 yuv422ptoyuy2= yuv422ptoyuy2_3DNOW;
248                 yuy2toyv12= yuy2toyv12_3DNOW;
249 //              uyvytoyv12= uyvytoyv12_3DNOW;
250 //              yvu9toyv12= yvu9toyv12_3DNOW;
251                 planar2x= planar2x_3DNOW;
252                 rgb24toyv12= rgb24toyv12_3DNOW;
253                 interleaveBytes= interleaveBytes_3DNOW;
254                 vu9_to_vu12= vu9_to_vu12_3DNOW;
255                 yvu9_to_yuy2= yvu9_to_yuy2_3DNOW;
256         }else if(flags & SWS_CPU_CAPS_MMX){
257                 rgb15to16= rgb15to16_MMX;
258                 rgb15to24= rgb15to24_MMX;
259                 rgb15to32= rgb15to32_MMX;
260                 rgb16to24= rgb16to24_MMX;
261                 rgb16to32= rgb16to32_MMX;
262                 rgb16to15= rgb16to15_MMX;
263                 rgb24to16= rgb24to16_MMX;
264                 rgb24to15= rgb24to15_MMX;
265                 rgb24to32= rgb24to32_MMX;
266                 rgb32to16= rgb32to16_MMX;
267                 rgb32to15= rgb32to15_MMX;
268                 rgb32to24= rgb32to24_MMX;
269                 rgb24tobgr15= rgb24tobgr15_MMX;
270                 rgb24tobgr16= rgb24tobgr16_MMX;
271                 rgb24tobgr24= rgb24tobgr24_MMX;
272                 rgb32tobgr32= rgb32tobgr32_MMX;
273                 rgb32tobgr16= rgb32tobgr16_MMX;
274                 rgb32tobgr15= rgb32tobgr15_MMX;
275                 yv12toyuy2= yv12toyuy2_MMX;
276                 yv12touyvy= yv12touyvy_MMX;
277                 yuv422ptoyuy2= yuv422ptoyuy2_MMX;
278                 yuy2toyv12= yuy2toyv12_MMX;
279 //              uyvytoyv12= uyvytoyv12_MMX;
280 //              yvu9toyv12= yvu9toyv12_MMX;
281                 planar2x= planar2x_MMX;
282                 rgb24toyv12= rgb24toyv12_MMX;
283                 interleaveBytes= interleaveBytes_MMX;
284                 vu9_to_vu12= vu9_to_vu12_MMX;
285                 yvu9_to_yuy2= yvu9_to_yuy2_MMX;
286         }else
287 #endif
288         {
289                 rgb15to16= rgb15to16_C;
290                 rgb15to24= rgb15to24_C;
291                 rgb15to32= rgb15to32_C;
292                 rgb16to24= rgb16to24_C;
293                 rgb16to32= rgb16to32_C;
294                 rgb16to15= rgb16to15_C;
295                 rgb24to16= rgb24to16_C;
296                 rgb24to15= rgb24to15_C;
297                 rgb24to32= rgb24to32_C;
298                 rgb32to16= rgb32to16_C;
299                 rgb32to15= rgb32to15_C;
300                 rgb32to24= rgb32to24_C;
301                 rgb24tobgr15= rgb24tobgr15_C;
302                 rgb24tobgr16= rgb24tobgr16_C;
303                 rgb24tobgr24= rgb24tobgr24_C;
304                 rgb32tobgr32= rgb32tobgr32_C;
305                 rgb32tobgr16= rgb32tobgr16_C;
306                 rgb32tobgr15= rgb32tobgr15_C;
307                 yv12toyuy2= yv12toyuy2_C;
308                 yv12touyvy= yv12touyvy_C;
309                 yuv422ptoyuy2= yuv422ptoyuy2_C;
310                 yuy2toyv12= yuy2toyv12_C;
311 //              uyvytoyv12= uyvytoyv12_C;
312 //              yvu9toyv12= yvu9toyv12_C;
313                 planar2x= planar2x_C;
314                 rgb24toyv12= rgb24toyv12_C;
315                 interleaveBytes= interleaveBytes_C;
316                 vu9_to_vu12= vu9_to_vu12_C;
317                 yvu9_to_yuy2= yvu9_to_yuy2_C;
318         }
319 }
320
321 /**
322  * Pallete is assumed to contain bgr32
323  */
324 void palette8torgb32(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
325 {
326         unsigned i;
327
328 /*
329         for(i=0; i<num_pixels; i++)
330                 ((unsigned *)dst)[i] = ((unsigned *)palette)[ src[i] ];
331 */
332
333         for(i=0; i<num_pixels; i++)
334         {
335                 //FIXME slow?
336                 dst[0]= palette[ src[i]*4+2 ];
337                 dst[1]= palette[ src[i]*4+1 ];
338                 dst[2]= palette[ src[i]*4+0 ];
339 //              dst[3]= 0; /* do we need this cleansing? */
340                 dst+= 4;
341         }
342 }
343
344 void palette8tobgr32(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
345 {
346         unsigned i;
347         for(i=0; i<num_pixels; i++)
348         {
349                 //FIXME slow?
350                 dst[0]= palette[ src[i]*4+0 ];
351                 dst[1]= palette[ src[i]*4+1 ];
352                 dst[2]= palette[ src[i]*4+2 ];
353 //              dst[3]= 0; /* do we need this cleansing? */
354                 dst+= 4;
355         }
356 }
357
358 /**
359  * Pallete is assumed to contain bgr32
360  */
361 void palette8torgb24(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
362 {
363         unsigned i;
364 /*
365         writes 1 byte o much and might cause alignment issues on some architectures?
366         for(i=0; i<num_pixels; i++)
367                 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
368 */
369         for(i=0; i<num_pixels; i++)
370         {
371                 //FIXME slow?
372                 dst[0]= palette[ src[i]*4+2 ];
373                 dst[1]= palette[ src[i]*4+1 ];
374                 dst[2]= palette[ src[i]*4+0 ];
375                 dst+= 3;
376         }
377 }
378
379 void palette8tobgr24(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
380 {
381         unsigned i;
382 /*
383         writes 1 byte o much and might cause alignment issues on some architectures?
384         for(i=0; i<num_pixels; i++)
385                 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
386 */
387         for(i=0; i<num_pixels; i++)
388         {
389                 //FIXME slow?
390                 dst[0]= palette[ src[i]*4+0 ];
391                 dst[1]= palette[ src[i]*4+1 ];
392                 dst[2]= palette[ src[i]*4+2 ];
393                 dst+= 3;
394         }
395 }
396
397 /**
398  * Palette is assumed to contain bgr16, see rgb32to16 to convert the palette
399  */
400 void palette8torgb16(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
401 {
402         unsigned i;
403         for(i=0; i<num_pixels; i++)
404                 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
405 }
406 void palette8tobgr16(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
407 {
408         unsigned i;
409         for(i=0; i<num_pixels; i++)
410                 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
411 }
412
413 /**
414  * Pallete is assumed to contain bgr15, see rgb32to15 to convert the palette
415  */
416 void palette8torgb15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
417 {
418         unsigned i;
419         for(i=0; i<num_pixels; i++)
420                 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
421 }
422 void palette8tobgr15(const uint8_t *src, uint8_t *dst, unsigned num_pixels, const uint8_t *palette)
423 {
424         unsigned i;
425         for(i=0; i<num_pixels; i++)
426                 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
427 }
428
429 void rgb32tobgr24(const uint8_t *src, uint8_t *dst, unsigned int src_size)
430 {
431         unsigned i;
432         unsigned num_pixels = src_size >> 2;
433         for(i=0; i<num_pixels; i++)
434         {
435                 dst[3*i + 0] = src[4*i + 2];
436                 dst[3*i + 1] = src[4*i + 1];
437                 dst[3*i + 2] = src[4*i + 0];
438         }
439 }
440
441 void rgb24tobgr32(const uint8_t *src, uint8_t *dst, unsigned int src_size)
442 {
443         unsigned i;
444         for(i=0; 3*i<src_size; i++)
445         {
446                 dst[4*i + 0] = src[3*i + 2];
447                 dst[4*i + 1] = src[3*i + 1];
448                 dst[4*i + 2] = src[3*i + 0];
449                 dst[4*i + 3] = 0;
450         }
451 }
452
453 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, unsigned int src_size)
454 {
455         const uint16_t *end;
456         uint8_t *d = (uint8_t *)dst;
457         const uint16_t *s = (uint16_t *)src;
458         end = s + src_size/2;
459         while(s < end)
460         {
461                 register uint16_t bgr;
462                 bgr = *s++;
463                 *d++ = (bgr&0xF800)>>8;
464                 *d++ = (bgr&0x7E0)>>3;
465                 *d++ = (bgr&0x1F)<<3;
466                 *d++ = 0;
467         }
468 }
469
470 void rgb16tobgr24(const uint8_t *src, uint8_t *dst, unsigned int src_size)
471 {
472         const uint16_t *end;
473         uint8_t *d = (uint8_t *)dst;
474         const uint16_t *s = (const uint16_t *)src;
475         end = s + src_size/2;
476         while(s < end)
477         {
478                 register uint16_t bgr;
479                 bgr = *s++;
480                 *d++ = (bgr&0xF800)>>8;
481                 *d++ = (bgr&0x7E0)>>3;
482                 *d++ = (bgr&0x1F)<<3;
483         }
484 }
485
486 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, unsigned int src_size)
487 {
488         unsigned i;
489         unsigned num_pixels = src_size >> 1;
490         
491         for(i=0; i<num_pixels; i++)
492         {
493             unsigned b,g,r;
494             register uint16_t rgb;
495             rgb = src[2*i];
496             r = rgb&0x1F;
497             g = (rgb&0x7E0)>>5;
498             b = (rgb&0xF800)>>11;
499             dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
500         }
501 }
502
503 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, unsigned int src_size)
504 {
505         unsigned i;
506         unsigned num_pixels = src_size >> 1;
507         
508         for(i=0; i<num_pixels; i++)
509         {
510             unsigned b,g,r;
511             register uint16_t rgb;
512             rgb = src[2*i];
513             r = rgb&0x1F;
514             g = (rgb&0x7E0)>>5;
515             b = (rgb&0xF800)>>11;
516             dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
517         }
518 }
519
520 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, unsigned int src_size)
521 {
522         const uint16_t *end;
523         uint8_t *d = (uint8_t *)dst;
524         const uint16_t *s = (const uint16_t *)src;
525         end = s + src_size/2;
526         while(s < end)
527         {
528                 register uint16_t bgr;
529                 bgr = *s++;
530                 *d++ = (bgr&0x7C00)>>7;
531                 *d++ = (bgr&0x3E0)>>2;
532                 *d++ = (bgr&0x1F)<<3;
533                 *d++ = 0;
534         }
535 }
536
537 void rgb15tobgr24(const uint8_t *src, uint8_t *dst, unsigned int src_size)
538 {
539         const uint16_t *end;
540         uint8_t *d = (uint8_t *)dst;
541         const uint16_t *s = (uint16_t *)src;
542         end = s + src_size/2;
543         while(s < end)
544         {
545                 register uint16_t bgr;
546                 bgr = *s++;
547                 *d++ = (bgr&0x7C00)>>7;
548                 *d++ = (bgr&0x3E0)>>2;
549                 *d++ = (bgr&0x1F)<<3;
550         }
551 }
552
553 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, unsigned int src_size)
554 {
555         unsigned i;
556         unsigned num_pixels = src_size >> 1;
557         
558         for(i=0; i<num_pixels; i++)
559         {
560             unsigned b,g,r;
561             register uint16_t rgb;
562             rgb = src[2*i];
563             r = rgb&0x1F;
564             g = (rgb&0x3E0)>>5;
565             b = (rgb&0x7C00)>>10;
566             dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
567         }
568 }
569
570 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, unsigned int src_size)
571 {
572         unsigned i;
573         unsigned num_pixels = src_size >> 1;
574         
575         for(i=0; i<num_pixels; i++)
576         {
577             unsigned b,g,r;
578             register uint16_t rgb;
579             rgb = src[2*i];
580             r = rgb&0x1F;
581             g = (rgb&0x3E0)>>5;
582             b = (rgb&0x7C00)>>10;
583             dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
584         }
585 }
586
587 void rgb8tobgr8(const uint8_t *src, uint8_t *dst, unsigned int src_size)
588 {
589         unsigned i;
590         unsigned num_pixels = src_size;
591         for(i=0; i<num_pixels; i++)
592         {
593             unsigned b,g,r;
594             register uint8_t rgb;
595             rgb = src[i];
596             r = (rgb&0x07);
597             g = (rgb&0x38)>>3;
598             b = (rgb&0xC0)>>6;
599             dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
600         }
601 }