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rgb2rgb.c
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1 /*
2  * software RGB to RGB converter
3  * pluralize by software PAL8 to RGB converter
4  * software YUV to YUV converter
5  * software YUV to RGB converter
6  * Written by Nick Kurshev.
7  * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <inttypes.h>
27 
28 #include "libavutil/attributes.h"
29 #include "libavutil/bswap.h"
30 #include "config.h"
31 #include "rgb2rgb.h"
32 #include "swscale.h"
33 #include "swscale_internal.h"
34 
35 void (*rgb32tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
36 void (*rgb32tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
37 void (*rgb32tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
38 void (*rgb24tobgr32)(const uint8_t *src, uint8_t *dst, int src_size);
39 void (*rgb24tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
40 void (*rgb24tobgr16)(const uint8_t *src, uint8_t *dst, int src_size);
41 void (*rgb24tobgr15)(const uint8_t *src, uint8_t *dst, int src_size);
42 void (*rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
43 void (*rgb15tobgr24)(const uint8_t *src, uint8_t *dst, int src_size);
44 
45 void (*rgb32to16)(const uint8_t *src, uint8_t *dst, int src_size);
46 void (*rgb32to15)(const uint8_t *src, uint8_t *dst, int src_size);
47 void (*rgb24to16)(const uint8_t *src, uint8_t *dst, int src_size);
48 void (*rgb24to15)(const uint8_t *src, uint8_t *dst, int src_size);
49 void (*rgb16to32)(const uint8_t *src, uint8_t *dst, int src_size);
50 void (*rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size);
51 void (*rgb15to16)(const uint8_t *src, uint8_t *dst, int src_size);
52 void (*rgb15to32)(const uint8_t *src, uint8_t *dst, int src_size);
53 
54 void (*shuffle_bytes_2103)(const uint8_t *src, uint8_t *dst, int src_size);
55 
56 void (*yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
57  const uint8_t *vsrc, uint8_t *dst,
58  int width, int height,
59  int lumStride, int chromStride, int dstStride);
60 void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
61  const uint8_t *vsrc, uint8_t *dst,
62  int width, int height,
63  int lumStride, int chromStride, int dstStride);
64 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc,
65  const uint8_t *vsrc, uint8_t *dst,
66  int width, int height,
67  int lumStride, int chromStride, int dstStride);
68 void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc,
69  const uint8_t *vsrc, uint8_t *dst,
70  int width, int height,
71  int lumStride, int chromStride, int dstStride);
72 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst,
73  uint8_t *udst, uint8_t *vdst,
74  int width, int height,
75  int lumStride, int chromStride, int srcStride);
76 void (*ff_rgb24toyv12)(const uint8_t *src, uint8_t *ydst,
77  uint8_t *udst, uint8_t *vdst,
78  int width, int height,
79  int lumStride, int chromStride, int srcStride,
80  int32_t *rgb2yuv);
81 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
82  int srcStride, int dstStride);
83 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
84  int width, int height, int src1Stride,
85  int src2Stride, int dstStride);
86 void (*deinterleaveBytes)(const uint8_t *src, uint8_t *dst1, uint8_t *dst2,
87  int width, int height, int srcStride,
88  int dst1Stride, int dst2Stride);
89 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
90  uint8_t *dst1, uint8_t *dst2,
91  int width, int height,
92  int srcStride1, int srcStride2,
93  int dstStride1, int dstStride2);
94 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
95  const uint8_t *src3, uint8_t *dst,
96  int width, int height,
97  int srcStride1, int srcStride2,
98  int srcStride3, int dstStride);
99 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
100  const uint8_t *src, int width, int height,
101  int lumStride, int chromStride, int srcStride);
102 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
103  const uint8_t *src, int width, int height,
104  int lumStride, int chromStride, int srcStride);
105 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
106  const uint8_t *src, int width, int height,
107  int lumStride, int chromStride, int srcStride);
108 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
109  const uint8_t *src, int width, int height,
110  int lumStride, int chromStride, int srcStride);
111 
112 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
113 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
114 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
115 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
116 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
117 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
118 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
119 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
120 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
121 
122 //plain C versions
123 #include "rgb2rgb_template.c"
124 
125 /*
126  * RGB15->RGB16 original by Strepto/Astral
127  * ported to gcc & bugfixed : A'rpi
128  * MMXEXT, 3DNOW optimization by Nick Kurshev
129  * 32-bit C version, and and&add trick by Michael Niedermayer
130  */
131 
132 av_cold void sws_rgb2rgb_init(void)
133 {
134  rgb2rgb_init_c();
135  if (ARCH_X86)
136  rgb2rgb_init_x86();
137 }
138 
139 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
140 {
141  int i, num_pixels = src_size >> 2;
142 
143  for (i = 0; i < num_pixels; i++) {
144 #if HAVE_BIGENDIAN
145  /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
146  dst[3 * i + 0] = src[4 * i + 1];
147  dst[3 * i + 1] = src[4 * i + 2];
148  dst[3 * i + 2] = src[4 * i + 3];
149 #else
150  dst[3 * i + 0] = src[4 * i + 2];
151  dst[3 * i + 1] = src[4 * i + 1];
152  dst[3 * i + 2] = src[4 * i + 0];
153 #endif
154  }
155 }
156 
157 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
158 {
159  int i;
160 
161  for (i = 0; 3 * i < src_size; i++) {
162 #if HAVE_BIGENDIAN
163  /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
164  dst[4 * i + 0] = 255;
165  dst[4 * i + 1] = src[3 * i + 0];
166  dst[4 * i + 2] = src[3 * i + 1];
167  dst[4 * i + 3] = src[3 * i + 2];
168 #else
169  dst[4 * i + 0] = src[3 * i + 2];
170  dst[4 * i + 1] = src[3 * i + 1];
171  dst[4 * i + 2] = src[3 * i + 0];
172  dst[4 * i + 3] = 255;
173 #endif
174  }
175 }
176 
177 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
178 {
179  uint8_t *d = dst;
180  const uint16_t *s = (const uint16_t *)src;
181  const uint16_t *end = s + src_size / 2;
182 
183  while (s < end) {
184  register uint16_t bgr = *s++;
185 #if HAVE_BIGENDIAN
186  *d++ = 255;
187  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
188  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
189  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
190 #else
191  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
192  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
193  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
194  *d++ = 255;
195 #endif
196  }
197 }
198 
199 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
200 {
201  uint16_t rgb, r, g, b;
202  uint16_t *d = (uint16_t *)dst;
203  const uint16_t *s = (const uint16_t *)src;
204  const uint16_t *end = s + src_size / 2;
205 
206  while (s < end) {
207  rgb = *s++;
208  r = rgb & 0xF00;
209  g = rgb & 0x0F0;
210  b = rgb & 0x00F;
211  r = (r << 3) | ((r & 0x800) >> 1);
212  g = (g << 2) | ((g & 0x080) >> 2);
213  b = (b << 1) | ( b >> 3);
214  *d++ = r | g | b;
215  }
216 }
217 
218 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
219 {
220  uint8_t *d = dst;
221  const uint16_t *s = (const uint16_t *)src;
222  const uint16_t *end = s + src_size / 2;
223 
224  while (s < end) {
225  register uint16_t bgr = *s++;
226  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
227  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
228  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
229  }
230 }
231 
232 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
233 {
234  int i, num_pixels = src_size >> 1;
235 
236  for (i = 0; i < num_pixels; i++) {
237  unsigned rgb = ((const uint16_t *)src)[i];
238  ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
239  }
240 }
241 
242 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
243 {
244  int i, num_pixels = src_size >> 1;
245 
246  for (i = 0; i < num_pixels; i++) {
247  unsigned rgb = ((const uint16_t *)src)[i];
248  ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
249  }
250 }
251 
252 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
253 {
254  uint8_t *d = dst;
255  const uint16_t *s = (const uint16_t *)src;
256  const uint16_t *end = s + src_size / 2;
257 
258  while (s < end) {
259  register uint16_t bgr = *s++;
260 #if HAVE_BIGENDIAN
261  *d++ = 255;
262  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
263  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
264  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
265 #else
266  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
267  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
268  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
269  *d++ = 255;
270 #endif
271  }
272 }
273 
274 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
275 {
276  uint8_t *d = dst;
277  const uint16_t *s = (const uint16_t *)src;
278  const uint16_t *end = s + src_size / 2;
279 
280  while (s < end) {
281  register uint16_t bgr = *s++;
282  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
283  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
284  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
285  }
286 }
287 
288 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
289 {
290  int i, num_pixels = src_size >> 1;
291 
292  for (i = 0; i < num_pixels; i++) {
293  unsigned rgb = ((const uint16_t *)src)[i];
294  ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
295  }
296 }
297 
298 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
299 {
300  int i, num_pixels = src_size >> 1;
301 
302  for (i = 0; i < num_pixels; i++) {
303  unsigned rgb = ((const uint16_t *)src)[i];
304  unsigned br = rgb & 0x7C1F;
305  ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
306  }
307 }
308 
309 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
310 {
311  uint16_t *d = (uint16_t *)dst;
312  uint16_t *s = (uint16_t *)src;
313  int i, num_pixels = src_size >> 1;
314 
315  for (i = 0; i < num_pixels; i++) {
316  unsigned rgb = s[i];
317  d[i] = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
318  }
319 }
320 
321 
322 #define DEFINE_SHUFFLE_BYTES(a, b, c, d) \
323 void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src, \
324  uint8_t *dst, int src_size) \
325 { \
326  int i; \
327  \
328  for (i = 0; i < src_size; i += 4) { \
329  dst[i + 0] = src[i + a]; \
330  dst[i + 1] = src[i + b]; \
331  dst[i + 2] = src[i + c]; \
332  dst[i + 3] = src[i + d]; \
333  } \
334 }
335 
336 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1)
337 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
338 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
339 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)
340 
341 #define DEFINE_RGB48TOBGR48(need_bswap, swap) \
342 void rgb48tobgr48_ ## need_bswap(const uint8_t *src, \
343  uint8_t *dst, int src_size) \
344 { \
345  uint16_t *d = (uint16_t *)dst; \
346  uint16_t *s = (uint16_t *)src; \
347  int i, num_pixels = src_size >> 1; \
348  \
349  for (i = 0; i < num_pixels; i += 3) { \
350  d[i ] = swap ? av_bswap16(s[i + 2]) : s[i + 2]; \
351  d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1]; \
352  d[i + 2] = swap ? av_bswap16(s[i ]) : s[i ]; \
353  } \
354 }
355 
356 DEFINE_RGB48TOBGR48(nobswap, 0)
357 DEFINE_RGB48TOBGR48(bswap, 1)
358 
359 #define DEFINE_RGB64TOBGR48(need_bswap, swap) \
360 void rgb64tobgr48_ ## need_bswap(const uint8_t *src, \
361  uint8_t *dst, int src_size) \
362 { \
363  uint16_t *d = (uint16_t *)dst; \
364  uint16_t *s = (uint16_t *)src; \
365  int i, num_pixels = src_size >> 3; \
366  \
367  for (i = 0; i < num_pixels; i++) { \
368  d[3 * i ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
369  d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
370  d[3 * i + 2] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
371  } \
372 }
373 
374 DEFINE_RGB64TOBGR48(nobswap, 0)
375 DEFINE_RGB64TOBGR48(bswap, 1)
376 
377 #define DEFINE_RGB64TO48(need_bswap, swap) \
378 void rgb64to48_ ## need_bswap(const uint8_t *src, \
379  uint8_t *dst, int src_size) \
380 { \
381  uint16_t *d = (uint16_t *)dst; \
382  uint16_t *s = (uint16_t *)src; \
383  int i, num_pixels = src_size >> 3; \
384  \
385  for (i = 0; i < num_pixels; i++) { \
386  d[3 * i ] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
387  d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
388  d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
389  } \
390 }
391 
392 DEFINE_RGB64TO48(nobswap, 0)
393 DEFINE_RGB64TO48(bswap, 1)
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