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[libav.git] / libswscale / rgb2rgb.c
CommitLineData
fcfbc150 1/*
a3aece93 2 * rgb2rgb.c, Software RGB to RGB convertor
6611aa83
NK		 3 * pluralize by Software PAL8 to RGB convertor
4 * Software YUV to YUV convertor
5 * Software YUV to RGB convertor
a3aece93 6 * Written by Nick Kurshev.
4fadc2b4
DB		 7 * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
8 *
d026b45e
DB		 9 * This file is part of FFmpeg.
10 *
11 * FFmpeg is free software; you can redistribute it and/or modify
4fadc2b4
DB		 12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
d026b45e 16 * FFmpeg is distributed in the hope that it will be useful,
4fadc2b4
DB		 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
d026b45e 22 * along with FFmpeg; if not, write to the Free Software
b19bcbaa 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
6a4970ab 24 *
807e0c66
LA		 25 * the C code (not assembly, mmx, ...) of this file can be used
26 * under the LGPL license too
a3aece93 27 */
b234ae81 28#include <inttypes.h>
b2d374c9 29#include "config.h"
b234ae81 30#include "rgb2rgb.h"
700490a4 31#include "swscale.h"
94c4def2
LA		 32#include "swscale_internal.h"
33#include "x86_cpu.h"
b2d374c9 34#include "bswap.h"
a3aece93 35
21316f3c
MN		 36#define FAST_BGR2YV12 // use 7 bit coeffs instead of 15bit
37
30c48a0a
BF		 38void (*rgb24to32)(const uint8_t *src, uint8_t *dst, long src_size);
39void (*rgb24to16)(const uint8_t *src, uint8_t *dst, long src_size);
40void (*rgb24to15)(const uint8_t *src, uint8_t *dst, long src_size);
41void (*rgb32to24)(const uint8_t *src, uint8_t *dst, long src_size);
42void (*rgb32to16)(const uint8_t *src, uint8_t *dst, long src_size);
43void (*rgb32to15)(const uint8_t *src, uint8_t *dst, long src_size);
44void (*rgb15to16)(const uint8_t *src, uint8_t *dst, long src_size);
45void (*rgb15to24)(const uint8_t *src, uint8_t *dst, long src_size);
46void (*rgb15to32)(const uint8_t *src, uint8_t *dst, long src_size);
47void (*rgb16to15)(const uint8_t *src, uint8_t *dst, long src_size);
48void (*rgb16to24)(const uint8_t *src, uint8_t *dst, long src_size);
49void (*rgb16to32)(const uint8_t *src, uint8_t *dst, long src_size);
7f526efd
RD		 50//void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
51void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
52void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
53void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
54void (*rgb32tobgr32)(const uint8_t *src, uint8_t *dst, long src_size);
55//void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, long src_size);
56void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, long src_size);
57void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, long src_size);
700490a4
MN		 58
59void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
6e42e6c4
DB		 60 long width, long height,
61 long lumStride, long chromStride, long dstStride);
caeaabe7 62void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
6e42e6c4
DB		 63 long width, long height,
64 long lumStride, long chromStride, long dstStride);
700490a4 65void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
6e42e6c4
DB		 66 long width, long height,
67 long lumStride, long chromStride, long dstStride);
700490a4 68void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
6e42e6c4
DB		 69 long width, long height,
70 long lumStride, long chromStride, long srcStride);
700490a4 71void (*rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
6e42e6c4
DB		 72 long width, long height,
73 long lumStride, long chromStride, long srcStride);
7f526efd 74void (*planar2x)(const uint8_t *src, uint8_t *dst, long width, long height,
6e42e6c4 75 long srcStride, long dstStride);
700490a4 76void (*interleaveBytes)(uint8_t *src1, uint8_t *src2, uint8_t *dst,
6e42e6c4
DB		 77 long width, long height, long src1Stride,
78 long src2Stride, long dstStride);
700490a4 79void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
6e42e6c4
DB		 80 uint8_t *dst1, uint8_t *dst2,
81 long width, long height,
82 long srcStride1, long srcStride2,
83 long dstStride1, long dstStride2);
700490a4 84void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
6e42e6c4
DB		 85 uint8_t *dst,
86 long width, long height,
87 long srcStride1, long srcStride2,
88 long srcStride3, long dstStride);
700490a4 89
9bde778e 90#if defined(ARCH_X86) && defined(CONFIG_GPL)
6e42e6c4
DB		 91static const uint64_t mmx_null __attribute__((aligned(8))) = 0x0000000000000000ULL;
92static const uint64_t mmx_one __attribute__((aligned(8))) = 0xFFFFFFFFFFFFFFFFULL;
93static const uint64_t mask32b attribute_used __attribute__((aligned(8))) = 0x000000FF000000FFULL;
94static const uint64_t mask32g attribute_used __attribute__((aligned(8))) = 0x0000FF000000FF00ULL;
95static const uint64_t mask32r attribute_used __attribute__((aligned(8))) = 0x00FF000000FF0000ULL;
96static const uint64_t mask32 __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
97static const uint64_t mask3216br __attribute__((aligned(8))) = 0x00F800F800F800F8ULL;
98static const uint64_t mask3216g __attribute__((aligned(8))) = 0x0000FC000000FC00ULL;
99static const uint64_t mask3215g __attribute__((aligned(8))) = 0x0000F8000000F800ULL;
100static const uint64_t mul3216 __attribute__((aligned(8))) = 0x2000000420000004ULL;
101static const uint64_t mul3215 __attribute__((aligned(8))) = 0x2000000820000008ULL;
102static const uint64_t mask24b attribute_used __attribute__((aligned(8))) = 0x00FF0000FF0000FFULL;
103static const uint64_t mask24g attribute_used __attribute__((aligned(8))) = 0xFF0000FF0000FF00ULL;
104static const uint64_t mask24r attribute_used __attribute__((aligned(8))) = 0x0000FF0000FF0000ULL;
105static const uint64_t mask24l __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
106static const uint64_t mask24h __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
107static const uint64_t mask24hh __attribute__((aligned(8))) = 0xffff000000000000ULL;
108static const uint64_t mask24hhh __attribute__((aligned(8))) = 0xffffffff00000000ULL;
109static const uint64_t mask24hhhh __attribute__((aligned(8))) = 0xffffffffffff0000ULL;
110static const uint64_t mask15b __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
111static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
112static const uint64_t mask15s __attribute__((aligned(8))) = 0xFFE0FFE0FFE0FFE0ULL;
113static const uint64_t mask15g __attribute__((aligned(8))) = 0x03E003E003E003E0ULL;
114static const uint64_t mask15r __attribute__((aligned(8))) = 0x7C007C007C007C00ULL;
0d9f3d85 115#define mask16b mask15b
6e42e6c4
DB		 116static const uint64_t mask16g __attribute__((aligned(8))) = 0x07E007E007E007E0ULL;
117static const uint64_t mask16r __attribute__((aligned(8))) = 0xF800F800F800F800ULL;
118static const uint64_t red_16mask __attribute__((aligned(8))) = 0x0000f8000000f800ULL;
119static const uint64_t green_16mask __attribute__((aligned(8))) = 0x000007e0000007e0ULL;
120static const uint64_t blue_16mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
121static const uint64_t red_15mask __attribute__((aligned(8))) = 0x00007c0000007c00ULL;
122static const uint64_t green_15mask __attribute__((aligned(8))) = 0x000003e0000003e0ULL;
123static const uint64_t blue_15mask __attribute__((aligned(8))) = 0x0000001f0000001fULL;
21316f3c
MN		 124
125#ifdef FAST_BGR2YV12
6e42e6c4
DB		 126static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000000210041000DULL;
127static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000FFEEFFDC0038ULL;
128static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00000038FFD2FFF8ULL;
21316f3c 129#else
6e42e6c4
DB		 130static const uint64_t bgr2YCoeff attribute_used __attribute__((aligned(8))) = 0x000020E540830C8BULL;
131static const uint64_t bgr2UCoeff attribute_used __attribute__((aligned(8))) = 0x0000ED0FDAC23831ULL;
132static const uint64_t bgr2VCoeff attribute_used __attribute__((aligned(8))) = 0x00003831D0E6F6EAULL;
21316f3c 133#endif
6e42e6c4
DB		 134static const uint64_t bgr2YOffset attribute_used __attribute__((aligned(8))) = 0x1010101010101010ULL;
135static const uint64_t bgr2UVOffset attribute_used __attribute__((aligned(8))) = 0x8080808080808080ULL;
136static const uint64_t w1111 attribute_used __attribute__((aligned(8))) = 0x0001000100010001ULL;
21316f3c 137
99969243
MN		 138#if 0
139static volatile uint64_t __attribute__((aligned(8))) b5Dither;
140static volatile uint64_t __attribute__((aligned(8))) g5Dither;
141static volatile uint64_t __attribute__((aligned(8))) g6Dither;
142static volatile uint64_t __attribute__((aligned(8))) r5Dither;
143
144static uint64_t __attribute__((aligned(8))) dither4[2]={
6e42e6c4
DB		 145 0x0103010301030103LL,
146 0x0200020002000200LL,};
99969243
MN		 147
148static uint64_t __attribute__((aligned(8))) dither8[2]={
6e42e6c4
DB		 149 0x0602060206020602LL,
150 0x0004000400040004LL,};
99969243 151#endif
3d6a30d9 152#endif /* defined(ARCH_X86) */
79811694 153
1de97d84
MN		 154#define RGB2YUV_SHIFT 8
155#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
156#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
157#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
158#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
159#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
160#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
161#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
162#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
163#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))
164
165//Note: we have C, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
166//Plain C versions
167#undef HAVE_MMX
168#undef HAVE_MMX2
169#undef HAVE_3DNOW
52075cde 170#undef HAVE_SSE2
1de97d84
MN		 171#define RENAME(a) a ## _C
172#include "rgb2rgb_template.c"
173
9bde778e 174#if defined(ARCH_X86) && defined(CONFIG_GPL)
1de97d84
MN		 175
176//MMX versions
177#undef RENAME
178#define HAVE_MMX
179#undef HAVE_MMX2
180#undef HAVE_3DNOW
52075cde 181#undef HAVE_SSE2
1de97d84
MN		 182#define RENAME(a) a ## _MMX
183#include "rgb2rgb_template.c"
184
185//MMX2 versions
186#undef RENAME
187#define HAVE_MMX
188#define HAVE_MMX2
189#undef HAVE_3DNOW
52075cde 190#undef HAVE_SSE2
1de97d84
MN		 191#define RENAME(a) a ## _MMX2
192#include "rgb2rgb_template.c"
193
194//3DNOW versions
195#undef RENAME
196#define HAVE_MMX
197#undef HAVE_MMX2
198#define HAVE_3DNOW
52075cde 199#undef HAVE_SSE2
abdcd337 200#define RENAME(a) a ## _3DNOW
1de97d84
MN		 201#include "rgb2rgb_template.c"
202
6e1c66bc 203#endif //ARCH_X86 || ARCH_X86_64
b238eb2e 204
a3aece93 205/*
700490a4 206 rgb15->rgb16 Original by Strepto/Astral
a3aece93 207 ported to gcc & bugfixed : A'rpi
51da31f1 208 MMX2, 3DNOW optimization by Nick Kurshev
9b2c28e6 209 32bit c version, and and&add trick by Michael Niedermayer
a3aece93 210*/
fcfbc150 211
700490a4 212void sws_rgb2rgb_init(int flags){
9bde778e 213#if (defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX)) && defined(CONFIG_GPL)
6e42e6c4
DB		 214 if (flags & SWS_CPU_CAPS_MMX2)
215 rgb2rgb_init_MMX2();
216 else if (flags & SWS_CPU_CAPS_3DNOW)
217 rgb2rgb_init_3DNOW();
218 else if (flags & SWS_CPU_CAPS_MMX)
219 rgb2rgb_init_MMX();
220 else
dbdae6ec 221#endif /* defined(HAVE_MMX2) || defined(HAVE_3DNOW) || defined(HAVE_MMX) */
6e42e6c4 222 rgb2rgb_init_C();
ac4d0aea 223}
700490a4 224
fcfbc150 225/**
10ef990d 226 * Palette is assumed to contain BGR32.
fcfbc150 227 */
7f526efd 228void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
fcfbc150 229{
6e42e6c4 230 long i;
9780c7ff
AB		 231
232/*
6e42e6c4 233 for (i=0; i<num_pixels; i++)
30c48a0a 234 ((unsigned *)dst)[i] = ((unsigned *)palette)[src[i]];
9780c7ff 235*/
fcfbc150 236
6e42e6c4
DB		 237 for (i=0; i<num_pixels; i++)
238 {
239 #ifdef WORDS_BIGENDIAN
30c48a0a
BF		 240 dst[3]= palette[src[i]*4+2];
241 dst[2]= palette[src[i]*4+1];
242 dst[1]= palette[src[i]*4+0];
6e42e6c4
DB		 243 #else
244 //FIXME slow?
30c48a0a
BF		 245 dst[0]= palette[src[i]*4+2];
246 dst[1]= palette[src[i]*4+1];
247 dst[2]= palette[src[i]*4+0];
6e42e6c4
DB		 248 //dst[3]= 0; /* do we need this cleansing? */
249 #endif
250 dst+= 4;
251 }
6c1baeb0 252}
9780c7ff 253
7f526efd 254void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
6c1baeb0 255{
6e42e6c4
DB		 256 long i;
257 for (i=0; i<num_pixels; i++)
258 {
259 #ifdef WORDS_BIGENDIAN
30c48a0a
BF		 260 dst[3]= palette[src[i]*4+0];
261 dst[2]= palette[src[i]*4+1];
262 dst[1]= palette[src[i]*4+2];
6e42e6c4
DB		 263 #else
264 //FIXME slow?
30c48a0a
BF		 265 dst[0]= palette[src[i]*4+0];
266 dst[1]= palette[src[i]*4+1];
267 dst[2]= palette[src[i]*4+2];
6e42e6c4
DB		 268 //dst[3]= 0; /* do we need this cleansing? */
269 #endif
270
271 dst+= 4;
272 }
6c1baeb0 273}
6c1baeb0 274
9ce6584e 275/**
10ef990d 276 * Palette is assumed to contain BGR32.
9ce6584e 277 */
7f526efd 278void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
9ce6584e 279{
6e42e6c4 280 long i;
9ce6584e 281/*
6e42e6c4
DB		 282 writes 1 byte o much and might cause alignment issues on some architectures?
283 for (i=0; i<num_pixels; i++)
30c48a0a 284 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
9ce6584e 285*/
6e42e6c4
DB		 286 for (i=0; i<num_pixels; i++)
287 {
288 //FIXME slow?
30c48a0a
BF		 289 dst[0]= palette[src[i]*4+2];
290 dst[1]= palette[src[i]*4+1];
291 dst[2]= palette[src[i]*4+0];
6e42e6c4
DB		 292 dst+= 3;
293 }
9ce6584e
MN		 294}
295
7f526efd 296void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
6c1baeb0 297{
6e42e6c4 298 long i;
6c1baeb0 299/*
6e42e6c4
DB		 300 writes 1 byte o much and might cause alignment issues on some architectures?
301 for (i=0; i<num_pixels; i++)
30c48a0a 302 ((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
6c1baeb0 303*/
6e42e6c4
DB		 304 for (i=0; i<num_pixels; i++)
305 {
306 //FIXME slow?
30c48a0a
BF		 307 dst[0]= palette[src[i]*4+0];
308 dst[1]= palette[src[i]*4+1];
309 dst[2]= palette[src[i]*4+2];
6e42e6c4
DB		 310 dst+= 3;
311 }
6c1baeb0
AB		 312}
313
fcfbc150
MN		 314/**
315 * Palette is assumed to contain bgr16, see rgb32to16 to convert the palette
316 */
7f526efd 317void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
fcfbc150 318{
6e42e6c4
DB		 319 long i;
320 for (i=0; i<num_pixels; i++)
30c48a0a 321 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[src[i]];
fcfbc150 322}
7f526efd 323void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
6c1baeb0 324{
6e42e6c4
DB		 325 long i;
326 for (i=0; i<num_pixels; i++)
30c48a0a 327 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[src[i]]);
6c1baeb0 328}
fcfbc150
MN		 329
330/**
10ef990d 331 * Palette is assumed to contain BGR15, see rgb32to15 to convert the palette.
fcfbc150 332 */
7f526efd 333void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
fcfbc150 334{
6e42e6c4
DB		 335 long i;
336 for (i=0; i<num_pixels; i++)
30c48a0a 337 ((uint16_t *)dst)[i] = ((uint16_t *)palette)[src[i]];
9ce6584e 338}
7f526efd 339void palette8tobgr15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
6c1baeb0 340{
6e42e6c4
DB		 341 long i;
342 for (i=0; i<num_pixels; i++)
30c48a0a 343 ((uint16_t *)dst)[i] = bswap_16(((uint16_t *)palette)[src[i]]);
6c1baeb0 344}
99969243 345
7f526efd 346void rgb32tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 347{
6e42e6c4
DB		 348 long i;
349 long num_pixels = src_size >> 2;
350 for (i=0; i<num_pixels; i++)
351 {
352 #ifdef WORDS_BIGENDIAN
353 /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
354 dst[3*i + 0] = src[4*i + 1];
355 dst[3*i + 1] = src[4*i + 2];
356 dst[3*i + 2] = src[4*i + 3];
357 #else
358 dst[3*i + 0] = src[4*i + 2];
359 dst[3*i + 1] = src[4*i + 1];
360 dst[3*i + 2] = src[4*i + 0];
361 #endif
362 }
ac4d0aea
MN		 363}
364
7f526efd 365void rgb24tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 366{
6e42e6c4
DB		 367 long i;
368 for (i=0; 3*i<src_size; i++)
369 {
370 #ifdef WORDS_BIGENDIAN
371 /* RGB24 (= R,G,B) -> BGR32 (= A,R,G,B) */
372 dst[4*i + 0] = 0;
373 dst[4*i + 1] = src[3*i + 0];
374 dst[4*i + 2] = src[3*i + 1];
375 dst[4*i + 3] = src[3*i + 2];
376 #else
377 dst[4*i + 0] = src[3*i + 2];
378 dst[4*i + 1] = src[3*i + 1];
379 dst[4*i + 2] = src[3*i + 0];
380 dst[4*i + 3] = 0;
381 #endif
382 }
ac4d0aea
MN		 383}
384
7f526efd 385void rgb16tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 386{
6e42e6c4
DB		 387 const uint16_t *end;
388 uint8_t *d = (uint8_t *)dst;
389 const uint16_t *s = (uint16_t *)src;
390 end = s + src_size/2;
391 while (s < end)
392 {
393 register uint16_t bgr;
394 bgr = *s++;
395 #ifdef WORDS_BIGENDIAN
396 *d++ = 0;
397 *d++ = (bgr&0x1F)<<3;
398 *d++ = (bgr&0x7E0)>>3;
399 *d++ = (bgr&0xF800)>>8;
400 #else
401 *d++ = (bgr&0xF800)>>8;
402 *d++ = (bgr&0x7E0)>>3;
403 *d++ = (bgr&0x1F)<<3;
404 *d++ = 0;
405 #endif
406 }
ac4d0aea
MN		 407}
408
7f526efd 409void rgb16tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 410{
6e42e6c4
DB		 411 const uint16_t *end;
412 uint8_t *d = (uint8_t *)dst;
413 const uint16_t *s = (const uint16_t *)src;
414 end = s + src_size/2;
415 while (s < end)
416 {
417 register uint16_t bgr;
418 bgr = *s++;
419 *d++ = (bgr&0xF800)>>8;
420 *d++ = (bgr&0x7E0)>>3;
421 *d++ = (bgr&0x1F)<<3;
422 }
ac4d0aea
MN		 423}
424
7f526efd 425void rgb16tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 426{
6e42e6c4
DB		 427 long i;
428 long num_pixels = src_size >> 1;
429
430 for (i=0; i<num_pixels; i++)
431 {
432 unsigned b,g,r;
433 register uint16_t rgb;
434 rgb = src[2*i];
435 r = rgb&0x1F;
436 g = (rgb&0x7E0)>>5;
437 b = (rgb&0xF800)>>11;
438 dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
439 }
ac4d0aea
MN		 440}
441
7f526efd 442void rgb16tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 443{
6e42e6c4
DB		 444 long i;
445 long num_pixels = src_size >> 1;
446
447 for (i=0; i<num_pixels; i++)
448 {
449 unsigned b,g,r;
450 register uint16_t rgb;
451 rgb = src[2*i];
452 r = rgb&0x1F;
453 g = (rgb&0x7E0)>>5;
454 b = (rgb&0xF800)>>11;
455 dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
456 }
ac4d0aea
MN		 457}
458
7f526efd 459void rgb15tobgr32(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 460{
6e42e6c4
DB		 461 const uint16_t *end;
462 uint8_t *d = (uint8_t *)dst;
463 const uint16_t *s = (const uint16_t *)src;
464 end = s + src_size/2;
465 while (s < end)
466 {
467 register uint16_t bgr;
468 bgr = *s++;
469 #ifdef WORDS_BIGENDIAN
470 *d++ = 0;
471 *d++ = (bgr&0x1F)<<3;
472 *d++ = (bgr&0x3E0)>>2;
473 *d++ = (bgr&0x7C00)>>7;
474 #else
475 *d++ = (bgr&0x7C00)>>7;
476 *d++ = (bgr&0x3E0)>>2;
477 *d++ = (bgr&0x1F)<<3;
478 *d++ = 0;
479 #endif
480 }
ac4d0aea
MN		 481}
482
7f526efd 483void rgb15tobgr24(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 484{
6e42e6c4
DB		 485 const uint16_t *end;
486 uint8_t *d = (uint8_t *)dst;
487 const uint16_t *s = (uint16_t *)src;
488 end = s + src_size/2;
489 while (s < end)
490 {
491 register uint16_t bgr;
492 bgr = *s++;
493 *d++ = (bgr&0x7C00)>>7;
494 *d++ = (bgr&0x3E0)>>2;
495 *d++ = (bgr&0x1F)<<3;
496 }
ac4d0aea
MN		 497}
498
7f526efd 499void rgb15tobgr16(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 500{
6e42e6c4
DB		 501 long i;
502 long num_pixels = src_size >> 1;
503
504 for (i=0; i<num_pixels; i++)
505 {
506 unsigned b,g,r;
507 register uint16_t rgb;
508 rgb = src[2*i];
509 r = rgb&0x1F;
510 g = (rgb&0x3E0)>>5;
511 b = (rgb&0x7C00)>>10;
512 dst[2*i] = (b&0x1F) | ((g&0x3F)<<5) | ((r&0x1F)<<11);
513 }
ac4d0aea
MN		 514}
515
7f526efd 516void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 517{
6e42e6c4
DB		 518 long i;
519 long num_pixels = src_size >> 1;
520
521 for (i=0; i<num_pixels; i++)
522 {
523 unsigned b,g,r;
524 register uint16_t rgb;
525 rgb = src[2*i];
526 r = rgb&0x1F;
527 g = (rgb&0x3E0)>>5;
528 b = (rgb&0x7C00)>>10;
529 dst[2*i] = (b&0x1F) | ((g&0x1F)<<5) | ((r&0x1F)<<10);
530 }
ac4d0aea
MN		 531}
532
7f526efd 533void rgb8tobgr8(const uint8_t *src, uint8_t *dst, long src_size)
ac4d0aea 534{
6e42e6c4
DB		 535 long i;
536 long num_pixels = src_size;
537 for (i=0; i<num_pixels; i++)
538 {
539 unsigned b,g,r;
540 register uint8_t rgb;
541 rgb = src[i];
542 r = (rgb&0x07);
543 g = (rgb&0x38)>>3;
544 b = (rgb&0xC0)>>6;
545 dst[i] = ((b<<1)&0x07) | ((g&0x07)<<3) | ((r&0x03)<<6);
546 }
ac4d0aea 547}
Libav master