Add official GPL header to make license explicit as discussed on ffmpeg-devel.
[libav.git] / libswscale / 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)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24 #include <inttypes.h>
25 #include "config.h"
26 #include "rgb2rgb.h"
27 #include "swscale.h"
28 #include "swscale_internal.h"
29 #include "x86_cpu.h"
30 #include "bswap.h"
31 #ifdef USE_FASTMEMCPY
32 #include "libvo/fastmemcpy.h"
33 #endif
34
35 #define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
36
37 void (*rgb24to32)(const uint8_t *src,uint8_t *dst,long src_size);
38 void (*rgb24to16)(const uint8_t *src,uint8_t *dst,long src_size);
39 void (*rgb24to15)(const uint8_t *src,uint8_t *dst,long src_size);
40 void (*rgb32to24)(const uint8_t *src,uint8_t *dst,long src_size);
41 void (*rgb32to16)(const uint8_t *src,uint8_t *dst,long src_size);
42 void (*rgb32to15)(const uint8_t *src,uint8_t *dst,long src_size);
43 void (*rgb15to16)(const uint8_t *src,uint8_t *dst,long src_size);
44 void (*rgb15to24)(const uint8_t *src,uint8_t *dst,long src_size);
45 void (*rgb15to32)(const uint8_t *src,uint8_t *dst,long src_size);
46 void (*rgb16to15)(const uint8_t *src,uint8_t *dst,long src_size);
47 void (*rgb16to24)(const uint8_t *src,uint8_t *dst,long src_size);
48 void (*rgb16to32)(const uint8_t *src,uint8_t *dst,long src_size);
49 //void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
50 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
51 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
52 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
53 void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
54 //void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
55 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
56 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
57
58 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
59 long width, long height,
60 long lumStride, long chromStride, long dstStride);
61 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
62 long width, long height,
63 long lumStride, long chromStride, long dstStride);
64 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
65 long width, long height,
66 long lumStride, long chromStride, long dstStride);
67 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
68 long width, long height,
69 long lumStride, long chromStride, long srcStride);
70 void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
71 long width, long height,
72 long lumStride, long chromStride, long srcStride);
73 void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
74 long srcStride, long dstStride);
75 void (*interleaveBytes)(uint8_t *src1, uint8_t *src2, uint8_t *dst,
76 long width, long height, long src1Stride,
77 long src2Stride, long dstStride);
78 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
79 uint8_t *dst1, uint8_t *dst2,
80 long width, long height,
81 long srcStride1, long srcStride2,
82 long dstStride1, long dstStride2);
83 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
84 uint8_t *dst,
85 long width, long height,
86 long srcStride1, long srcStride2,
87 long srcStride3, long dstStride);
88
89 #if defined(ARCH_X86) || defined(ARCH_X86_64)
90 static const uint64_t mmx_null __attribute__((aligned(8))) = 0x0000000000000000ULL;
91 static const uint64_t mmx_one __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
92 static const uint64_t mask32b attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
93 static const uint64_t mask32g attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
94 static const uint64_t mask32r attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
95 static const uint64_t mask32 __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
96 static const uint64_t mask3216br __attribute__((aligned(8)))=0x00F800F800F800F8ULL;
97 static const uint64_t mask3216g __attribute__((aligned(8)))=0x0000FC000000FC00ULL;
98 static const uint64_t mask3215g __attribute__((aligned(8)))=0x0000F8000000F800ULL;
99 static const uint64_t mul3216 __attribute__((aligned(8))) = 0x2000000420000004ULL;
100 static const uint64_t mul3215 __attribute__((aligned(8))) = 0x2000000820000008ULL;
101 static const uint64_t mask24b attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
102 static const uint64_t mask24g attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
103 static const uint64_t mask24r attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
104 static const uint64_t mask24l __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
105 static const uint64_t mask24h __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
106 static const uint64_t mask24hh __attribute__((aligned(8))) = 0xffff000000000000ULL;
107 static const uint64_t mask24hhh __attribute__((aligned(8))) = 0xffffffff00000000ULL;
108 static const uint64_t mask24hhhh __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
109 static const uint64_t mask15b __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
110 static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
111 static const uint64_t mask15s __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
112 static const uint64_t mask15g __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
113 static const uint64_t mask15r __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
114 #define mask16b mask15b
115 static const uint64_t mask16g __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
116 static const uint64_t mask16r __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
117 static const uint64_t red_16mask __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
118 static const uint64_t green_16mask __attribute__((aligned(8)))= 0x000007e0000007e0ULL;
119 static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
120 static const uint64_t red_15mask __attribute__((aligned(8))) = 0x00007c000000f800ULL;
121 static const uint64_t green_15mask __attribute__((aligned(8)))= 0x000003e0000007e0ULL;
122 static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
123
124 #ifdef FAST_BGR2YV12
125 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
126 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
127 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
128 #else
129 static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
130 static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
131 static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
132 #endif
133 static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
134 static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8)))= 0x8080808080808080ULL;
135 static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
136
137 #if 0
138 static volatile uint64_t __attribute__((aligned(8))) b5Dither;
139 static volatile uint64_t __attribute__((aligned(8))) g5Dither;
140 static volatile uint64_t __attribute__((aligned(8))) g6Dither;
141 static volatile uint64_t __attribute__((aligned(8))) r5Dither;
142
143 static uint64_t __attribute__((aligned(8))) dither4[2]={
144 0x0103010301030103LL,
145 0x0200020002000200LL,};
146
147 static uint64_t __attribute__((aligned(8))) dither8[2]={
148 0x0602060206020602LL,
149 0x0004000400040004LL,};
150 #endif
151 #endif /* defined(ARCH_X86) || defined(ARCH_X86_64) */
152
153 #define RGB2YUV_SHIFT 8
154 #define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
155 #define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
156 #define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
157 #define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
158 #define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
159 #define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
160 #define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
161 #define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
162 #define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
163
164 //Note: we have C, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
165 //Plain C versions
166 #undef HAVE_MMX
167 #undef HAVE_MMX2
168 #undef HAVE_3DNOW
169 #undef HAVE_SSE2
170 #define RENAME(a) a ## _C
171 #include "rgb2rgb_template.c"
172
173 #if defined(ARCH_X86) || defined(ARCH_X86_64)
174
175 //MMX versions
176 #undef RENAME
177 #define HAVE_MMX
178 #undef HAVE_MMX2
179 #undef HAVE_3DNOW
180 #undef HAVE_SSE2
181 #define RENAME(a) a ## _MMX
182 #include "rgb2rgb_template.c"
183
184 //MMX2 versions
185 #undef RENAME
186 #define HAVE_MMX
187 #define HAVE_MMX2
188 #undef HAVE_3DNOW
189 #undef HAVE_SSE2
190 #define RENAME(a) a ## _MMX2
191 #include "rgb2rgb_template.c"
192
193 //3DNOW versions
194 #undef RENAME
195 #define HAVE_MMX
196 #undef HAVE_MMX2
197 #define HAVE_3DNOW
198 #undef HAVE_SSE2
199 #define RENAME(a) a ## _3DNOW
200 #include "rgb2rgb_template.c"
201
202 #endif //ARCH_X86 || ARCH_X86_64
203
204 /*
205 rgb15->rgb16 Original by Strepto/Astral
206 ported to gcc & bugfixed : A'rpi
207 MMX2, 3DNOW optimization by Nick Kurshev
208 32bit c version, and and&add trick by Michael Niedermayer
209 */
210
211 void sws_rgb2rgb_init(int flags){
212 #if defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX)
213 if(flags & SWS_CPU_CAPS_MMX2){
214 rgb15to16= rgb15to16_MMX2;
215 rgb15to24= rgb15to24_MMX2;
216 rgb15to32= rgb15to32_MMX2;
217 rgb16to24= rgb16to24_MMX2;
218 rgb16to32= rgb16to32_MMX2;
219 rgb16to15= rgb16to15_MMX2;
220 rgb24to16= rgb24to16_MMX2;
221 rgb24to15= rgb24to15_MMX2;
222 rgb24to32= rgb24to32_MMX2;
223 rgb32to16= rgb32to16_MMX2;
224 rgb32to15= rgb32to15_MMX2;
225 rgb32to24= rgb32to24_MMX2;
226 rgb24tobgr15= rgb24tobgr15_MMX2;
227 rgb24tobgr16= rgb24tobgr16_MMX2;
228 rgb24tobgr24= rgb24tobgr24_MMX2;
229 rgb32tobgr32= rgb32tobgr32_MMX2;
230 rgb32tobgr16= rgb32tobgr16_MMX2;
231 rgb32tobgr15= rgb32tobgr15_MMX2;
232 yv12toyuy2= yv12toyuy2_MMX2;
233 yv12touyvy= yv12touyvy_MMX2;
234 yuv422ptoyuy2= yuv422ptoyuy2_MMX2;
235 yuy2toyv12= yuy2toyv12_MMX2;
236 // uyvytoyv12= uyvytoyv12_MMX2;
237 // yvu9toyv12= yvu9toyv12_MMX2;
238 planar2x= planar2x_MMX2;
239 rgb24toyv12= rgb24toyv12_MMX2;
240 interleaveBytes= interleaveBytes_MMX2;
241 vu9_to_vu12= vu9_to_vu12_MMX2;
242 yvu9_to_yuy2= yvu9_to_yuy2_MMX2;
243 }else if(flags & SWS_CPU_CAPS_3DNOW){
244 rgb15to16= rgb15to16_3DNOW;
245 rgb15to24= rgb15to24_3DNOW;
246 rgb15to32= rgb15to32_3DNOW;
247 rgb16to24= rgb16to24_3DNOW;
248 rgb16to32= rgb16to32_3DNOW;
249 rgb16to15= rgb16to15_3DNOW;
250 rgb24to16= rgb24to16_3DNOW;
251 rgb24to15= rgb24to15_3DNOW;
252 rgb24to32= rgb24to32_3DNOW;
253 rgb32to16= rgb32to16_3DNOW;
254 rgb32to15= rgb32to15_3DNOW;
255 rgb32to24= rgb32to24_3DNOW;
256 rgb24tobgr15= rgb24tobgr15_3DNOW;
257 rgb24tobgr16= rgb24tobgr16_3DNOW;
258 rgb24tobgr24= rgb24tobgr24_3DNOW;
259 rgb32tobgr32= rgb32tobgr32_3DNOW;
260 rgb32tobgr16= rgb32tobgr16_3DNOW;
261 rgb32tobgr15= rgb32tobgr15_3DNOW;
262 yv12toyuy2= yv12toyuy2_3DNOW;
263 yv12touyvy= yv12touyvy_3DNOW;
264 yuv422ptoyuy2= yuv422ptoyuy2_3DNOW;
265 yuy2toyv12= yuy2toyv12_3DNOW;
266 // uyvytoyv12= uyvytoyv12_3DNOW;
267 // yvu9toyv12= yvu9toyv12_3DNOW;
268 planar2x= planar2x_3DNOW;
269 rgb24toyv12= rgb24toyv12_3DNOW;
270 interleaveBytes= interleaveBytes_3DNOW;
271 vu9_to_vu12= vu9_to_vu12_3DNOW;
272 yvu9_to_yuy2= yvu9_to_yuy2_3DNOW;
273 }else if(flags & SWS_CPU_CAPS_MMX){
274 rgb15to16= rgb15to16_MMX;
275 rgb15to24= rgb15to24_MMX;
276 rgb15to32= rgb15to32_MMX;
277 rgb16to24= rgb16to24_MMX;
278 rgb16to32= rgb16to32_MMX;
279 rgb16to15= rgb16to15_MMX;
280 rgb24to16= rgb24to16_MMX;
281 rgb24to15= rgb24to15_MMX;
282 rgb24to32= rgb24to32_MMX;
283 rgb32to16= rgb32to16_MMX;
284 rgb32to15= rgb32to15_MMX;
285 rgb32to24= rgb32to24_MMX;
286 rgb24tobgr15= rgb24tobgr15_MMX;
287 rgb24tobgr16= rgb24tobgr16_MMX;
288 rgb24tobgr24= rgb24tobgr24_MMX;
289 rgb32tobgr32= rgb32tobgr32_MMX;
290 rgb32tobgr16= rgb32tobgr16_MMX;
291 rgb32tobgr15= rgb32tobgr15_MMX;
292 yv12toyuy2= yv12toyuy2_MMX;
293 yv12touyvy= yv12touyvy_MMX;
294 yuv422ptoyuy2= yuv422ptoyuy2_MMX;
295 yuy2toyv12= yuy2toyv12_MMX;
296 // uyvytoyv12= uyvytoyv12_MMX;
297 // yvu9toyv12= yvu9toyv12_MMX;
298 planar2x= planar2x_MMX;
299 rgb24toyv12= rgb24toyv12_MMX;
300 interleaveBytes= interleaveBytes_MMX;
301 vu9_to_vu12= vu9_to_vu12_MMX;
302 yvu9_to_yuy2= yvu9_to_yuy2_MMX;
303 }else
304 #endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
305 {
306 rgb15to16= rgb15to16_C;
307 rgb15to24= rgb15to24_C;
308 rgb15to32= rgb15to32_C;
309 rgb16to24= rgb16to24_C;
310 rgb16to32= rgb16to32_C;
311 rgb16to15= rgb16to15_C;
312 rgb24to16= rgb24to16_C;
313 rgb24to15= rgb24to15_C;
314 rgb24to32= rgb24to32_C;
315 rgb32to16= rgb32to16_C;
316 rgb32to15= rgb32to15_C;
317 rgb32to24= rgb32to24_C;
318 rgb24tobgr15= rgb24tobgr15_C;
319 rgb24tobgr16= rgb24tobgr16_C;
320 rgb24tobgr24= rgb24tobgr24_C;
321 rgb32tobgr32= rgb32tobgr32_C;
322 rgb32tobgr16= rgb32tobgr16_C;
323 rgb32tobgr15= rgb32tobgr15_C;
324 yv12toyuy2= yv12toyuy2_C;
325 yv12touyvy= yv12touyvy_C;
326 yuv422ptoyuy2= yuv422ptoyuy2_C;
327 yuy2toyv12= yuy2toyv12_C;
328 // uyvytoyv12= uyvytoyv12_C;
329 // yvu9toyv12= yvu9toyv12_C;
330 planar2x= planar2x_C;
331 rgb24toyv12= rgb24toyv12_C;
332 interleaveBytes= interleaveBytes_C;
333 vu9_to_vu12= vu9_to_vu12_C;
334 yvu9_to_yuy2= yvu9_to_yuy2_C;
335 }
336 }
337
338 /**
339 * Pallete is assumed to contain bgr32
340 */
341 void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
342 {
343 long i;
344
345 /*
346 for(i=0; i<num_pixels; i++)
347 ((unsigned *)dst)[i] = ((unsigned *)palette)[ src[i] ];
348 */
349
350 for(i=0; i<num_pixels; i++)
351 {
352 #ifdef WORDS_BIGENDIAN
353 dst[3]= palette[ src[i]*4+2 ];
354 dst[2]= palette[ src[i]*4+1 ];
355 dst[1]= palette[ src[i]*4+0 ];
356 #else
357 //FIXME slow?
358 dst[0]= palette[ src[i]*4+2 ];
359 dst[1]= palette[ src[i]*4+1 ];
360 dst[2]= palette[ src[i]*4+0 ];
361 //dst[3]= 0; /* do we need this cleansing? */
362 #endif
363 dst+= 4;
364 }
365 }
366
367 void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
368 {
369 long i;
370 for(i=0; i<num_pixels; i++)
371 {
372 #ifdef WORDS_BIGENDIAN
373 dst[3]= palette[ src[i]*4+0 ];
374 dst[2]= palette[ src[i]*4+1 ];
375 dst[1]= palette[ src[i]*4+2 ];
376 #else
377 //FIXME slow?
378 dst[0]= palette[ src[i]*4+0 ];
379 dst[1]= palette[ src[i]*4+1 ];
380 dst[2]= palette[ src[i]*4+2 ];
381 //dst[3]= 0; /* do we need this cleansing? */
382 #endif
383
384 dst+= 4;
385 }
386 }
387
388 /**
389 * Pallete is assumed to contain bgr32
390 */
391 void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
392 {
393 long i;
394 /*
395 writes 1 byte o much and might cause alignment issues on some architectures?
396 for(i=0; i<num_pixels; i++)
397 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
398 */
399 for(i=0; i<num_pixels; i++)
400 {
401 //FIXME slow?
402 dst[0]= palette[ src[i]*4+2 ];
403 dst[1]= palette[ src[i]*4+1 ];
404 dst[2]= palette[ src[i]*4+0 ];
405 dst+= 3;
406 }
407 }
408
409 void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
410 {
411 long i;
412 /*
413 writes 1 byte o much and might cause alignment issues on some architectures?
414 for(i=0; i<num_pixels; i++)
415 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[ src[i] ];
416 */
417 for(i=0; i<num_pixels; i++)
418 {
419 //FIXME slow?
420 dst[0]= palette[ src[i]*4+0 ];
421 dst[1]= palette[ src[i]*4+1 ];
422 dst[2]= palette[ src[i]*4+2 ];
423 dst+= 3;
424 }
425 }
426
427 /**
428 * Palette is assumed to contain bgr16, see rgb32to16 to convert the palette
429 */
430 void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
431 {
432 long i;
433 for(i=0; i<num_pixels; i++)
434 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
435 }
436 void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
437 {
438 long i;
439 for(i=0; i<num_pixels; i++)
440 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
441 }
442
443 /**
444 * Pallete is assumed to contain bgr15, see rgb32to15 to convert the palette
445 */
446 void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
447 {
448 long i;
449 for(i=0; i<num_pixels; i++)
450 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[ src[i] ];
451 }
452 void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
453 {
454 long i;
455 for(i=0; i<num_pixels; i++)
456 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[ src[i] ]);
457 }
458
459 void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
460 {
461 long i;
462 long num_pixels = src_size >> 2;
463 for(i=0; i<num_pixels; i++)
464 {
465 #ifdef WORDS_BIGENDIAN
466 /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
467 dst[3*i + 0] = src[4*i + 1];
468 dst[3*i + 1] = src[4*i + 2];
469 dst[3*i + 2] = src[4*i + 3];
470 #else
471 dst[3*i + 0] = src[4*i + 2];
472 dst[3*i + 1] = src[4*i + 1];
473 dst[3*i + 2] = src[4*i + 0];
474 #endif
475 }
476 }
477
478 void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
479 {
480 long i;
481 for(i=0; 3*i<src_size; i++)
482 {
483 #ifdef WORDS_BIGENDIAN
484 /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
485 dst[4*i + 0] = 0;
486 dst[4*i + 1] = src[3*i + 0];
487 dst[4*i + 2] = src[3*i + 1];
488 dst[4*i + 3] = src[3*i + 2];
489 #else
490 dst[4*i + 0] = src[3*i + 2];
491 dst[4*i + 1] = src[3*i + 1];
492 dst[4*i + 2] = src[3*i + 0];
493 dst[4*i + 3] = 0;
494 #endif
495 }
496 }
497
498 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
499 {
500 const uint16_t *end;
501 uint8_t *d = (uint8_t *)dst;
502 const uint16_t *s = (uint16_t *)src;
503 end = s + src_size/2;
504 while(s < end)
505 {
506 register uint16_t bgr;
507 bgr = *s++;
508 #ifdef WORDS_BIGENDIAN
509 *d++ = 0;
510 *d++ = (bgr&0x1F)<<3;
511 *d++ = (bgr&0x7E0)>>3;
512 *d++ = (bgr&0xF800)>>8;
513 #else
514 *d++ = (bgr&0xF800)>>8;
515 *d++ = (bgr&0x7E0)>>3;
516 *d++ = (bgr&0x1F)<<3;
517 *d++ = 0;
518 #endif
519 }
520 }
521
522 void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
523 {
524 const uint16_t *end;
525 uint8_t *d = (uint8_t *)dst;
526 const uint16_t *s = (const uint16_t *)src;
527 end = s + src_size/2;
528 while(s < end)
529 {
530 register uint16_t bgr;
531 bgr = *s++;
532 *d++ = (bgr&0xF800)>>8;
533 *d++ = (bgr&0x7E0)>>3;
534 *d++ = (bgr&0x1F)<<3;
535 }
536 }
537
538 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
539 {
540 long i;
541 long num_pixels = src_size >> 1;
542
543 for(i=0; i<num_pixels; i++)
544 {
545 unsigned b,g,r;
546 register uint16_t rgb;
547 rgb = src[2*i];
548 r = rgb&0x1F;
549 g = (rgb&0x7E0)>>5;
550 b = (rgb&0xF800)>>11;
551 dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
552 }
553 }
554
555 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
556 {
557 long i;
558 long num_pixels = src_size >> 1;
559
560 for(i=0; i<num_pixels; i++)
561 {
562 unsigned b,g,r;
563 register uint16_t rgb;
564 rgb = src[2*i];
565 r = rgb&0x1F;
566 g = (rgb&0x7E0)>>5;
567 b = (rgb&0xF800)>>11;
568 dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
569 }
570 }
571
572 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
573 {
574 const uint16_t *end;
575 uint8_t *d = (uint8_t *)dst;
576 const uint16_t *s = (const uint16_t *)src;
577 end = s + src_size/2;
578 while(s < end)
579 {
580 register uint16_t bgr;
581 bgr = *s++;
582 #ifdef WORDS_BIGENDIAN
583 *d++ = 0;
584 *d++ = (bgr&0x1F)<<3;
585 *d++ = (bgr&0x3E0)>>2;
586 *d++ = (bgr&0x7C00)>>7;
587 #else
588 *d++ = (bgr&0x7C00)>>7;
589 *d++ = (bgr&0x3E0)>>2;
590 *d++ = (bgr&0x1F)<<3;
591 *d++ = 0;
592 #endif
593 }
594 }
595
596 void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
597 {
598 const uint16_t *end;
599 uint8_t *d = (uint8_t *)dst;
600 const uint16_t *s = (uint16_t *)src;
601 end = s + src_size/2;
602 while(s < end)
603 {
604 register uint16_t bgr;
605 bgr = *s++;
606 *d++ = (bgr&0x7C00)>>7;
607 *d++ = (bgr&0x3E0)>>2;
608 *d++ = (bgr&0x1F)<<3;
609 }
610 }
611
612 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
613 {
614 long i;
615 long num_pixels = src_size >> 1;
616
617 for(i=0; i<num_pixels; i++)
618 {
619 unsigned b,g,r;
620 register uint16_t rgb;
621 rgb = src[2*i];
622 r = rgb&0x1F;
623 g = (rgb&0x3E0)>>5;
624 b = (rgb&0x7C00)>>10;
625 dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
626 }
627 }
628
629 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
630 {
631 long i;
632 long num_pixels = src_size >> 1;
633
634 for(i=0; i<num_pixels; i++)
635 {
636 unsigned b,g,r;
637 register uint16_t rgb;
638 rgb = src[2*i];
639 r = rgb&0x1F;
640 g = (rgb&0x3E0)>>5;
641 b = (rgb&0x7C00)>>10;
642 dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
643 }
644 }
645
646 void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
647 {
648 long i;
649 long num_pixels = src_size;
650 for(i=0; i<num_pixels; i++)
651 {
652 unsigned b,g,r;
653 register uint8_t rgb;
654 rgb = src[i];
655 r = (rgb&0x07);
656 g = (rgb&0x38)>>3;
657 b = (rgb&0xC0)>>6;
658 dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
659 }
660 }