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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 (*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 void (*planar2x)(const uint8_t *src, uint8_t *dst, int width, int height,
81  int srcStride, int dstStride);
82 void (*interleaveBytes)(const uint8_t *src1, const uint8_t *src2, uint8_t *dst,
83  int width, int height, int src1Stride,
84  int src2Stride, int dstStride);
85 void (*vu9_to_vu12)(const uint8_t *src1, const uint8_t *src2,
86  uint8_t *dst1, uint8_t *dst2,
87  int width, int height,
88  int srcStride1, int srcStride2,
89  int dstStride1, int dstStride2);
90 void (*yvu9_to_yuy2)(const uint8_t *src1, const uint8_t *src2,
91  const uint8_t *src3, uint8_t *dst,
92  int width, int height,
93  int srcStride1, int srcStride2,
94  int srcStride3, int dstStride);
95 void (*uyvytoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
96  const uint8_t *src, int width, int height,
97  int lumStride, int chromStride, int srcStride);
98 void (*uyvytoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
99  const uint8_t *src, int width, int height,
100  int lumStride, int chromStride, int srcStride);
101 void (*yuyvtoyuv420)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
102  const uint8_t *src, int width, int height,
103  int lumStride, int chromStride, int srcStride);
104 void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
105  const uint8_t *src, int width, int height,
106  int lumStride, int chromStride, int srcStride);
107 
108 #define RGB2YUV_SHIFT 8
109 #define BY ((int)( 0.098 * (1 << RGB2YUV_SHIFT) + 0.5))
110 #define BV ((int)(-0.071 * (1 << RGB2YUV_SHIFT) + 0.5))
111 #define BU ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
112 #define GY ((int)( 0.504 * (1 << RGB2YUV_SHIFT) + 0.5))
113 #define GV ((int)(-0.368 * (1 << RGB2YUV_SHIFT) + 0.5))
114 #define GU ((int)(-0.291 * (1 << RGB2YUV_SHIFT) + 0.5))
115 #define RY ((int)( 0.257 * (1 << RGB2YUV_SHIFT) + 0.5))
116 #define RV ((int)( 0.439 * (1 << RGB2YUV_SHIFT) + 0.5))
117 #define RU ((int)(-0.148 * (1 << RGB2YUV_SHIFT) + 0.5))
118 
119 //plain C versions
120 #include "rgb2rgb_template.c"
121 
122 /*
123  * RGB15->RGB16 original by Strepto/Astral
124  * ported to gcc & bugfixed : A'rpi
125  * MMXEXT, 3DNOW optimization by Nick Kurshev
126  * 32-bit C version, and and&add trick by Michael Niedermayer
127  */
128 
129 av_cold void sws_rgb2rgb_init(void)
130 {
131  rgb2rgb_init_c();
132  if (HAVE_MMX)
133  rgb2rgb_init_x86();
134 }
135 
136 void rgb32to24(const uint8_t *src, uint8_t *dst, int src_size)
137 {
138  int i, num_pixels = src_size >> 2;
139 
140  for (i = 0; i < num_pixels; i++) {
141 #if HAVE_BIGENDIAN
142  /* RGB32 (= A,B,G,R) -> BGR24 (= B,G,R) */
143  dst[3 * i + 0] = src[4 * i + 1];
144  dst[3 * i + 1] = src[4 * i + 2];
145  dst[3 * i + 2] = src[4 * i + 3];
146 #else
147  dst[3 * i + 0] = src[4 * i + 2];
148  dst[3 * i + 1] = src[4 * i + 1];
149  dst[3 * i + 2] = src[4 * i + 0];
150 #endif
151  }
152 }
153 
154 void rgb24to32(const uint8_t *src, uint8_t *dst, int src_size)
155 {
156  int i;
157 
158  for (i = 0; 3 * i < src_size; i++) {
159 #if HAVE_BIGENDIAN
160  /* RGB24 (= R, G, B) -> BGR32 (= A, R, G, B) */
161  dst[4 * i + 0] = 255;
162  dst[4 * i + 1] = src[3 * i + 0];
163  dst[4 * i + 2] = src[3 * i + 1];
164  dst[4 * i + 3] = src[3 * i + 2];
165 #else
166  dst[4 * i + 0] = src[3 * i + 2];
167  dst[4 * i + 1] = src[3 * i + 1];
168  dst[4 * i + 2] = src[3 * i + 0];
169  dst[4 * i + 3] = 255;
170 #endif
171  }
172 }
173 
174 void rgb16tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
175 {
176  uint8_t *d = dst;
177  const uint16_t *s = (const uint16_t *)src;
178  const uint16_t *end = s + src_size / 2;
179 
180  while (s < end) {
181  register uint16_t bgr = *s++;
182 #if HAVE_BIGENDIAN
183  *d++ = 255;
184  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
185  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
186  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
187 #else
188  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
189  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
190  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
191  *d++ = 255;
192 #endif
193  }
194 }
195 
196 void rgb12to15(const uint8_t *src, uint8_t *dst, int src_size)
197 {
198  uint16_t rgb, r, g, b;
199  uint16_t *d = (uint16_t *)dst;
200  const uint16_t *s = (const uint16_t *)src;
201  const uint16_t *end = s + src_size / 2;
202 
203  while (s < end) {
204  rgb = *s++;
205  r = rgb & 0xF00;
206  g = rgb & 0x0F0;
207  b = rgb & 0x00F;
208  r = (r << 3) | ((r & 0x800) >> 1);
209  g = (g << 2) | ((g & 0x080) >> 2);
210  b = (b << 1) | ( b >> 3);
211  *d++ = r | g | b;
212  }
213 }
214 
215 void rgb16to24(const uint8_t *src, uint8_t *dst, int src_size)
216 {
217  uint8_t *d = dst;
218  const uint16_t *s = (const uint16_t *)src;
219  const uint16_t *end = s + src_size / 2;
220 
221  while (s < end) {
222  register uint16_t bgr = *s++;
223  *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
224  *d++ = ((bgr&0x07E0)>>3) | ((bgr&0x07E0)>> 9);
225  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
226  }
227 }
228 
229 void rgb16tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
230 {
231  int i, num_pixels = src_size >> 1;
232 
233  for (i = 0; i < num_pixels; i++) {
234  unsigned rgb = ((const uint16_t *)src)[i];
235  ((uint16_t *)dst)[i] = (rgb >> 11) | (rgb & 0x7E0) | (rgb << 11);
236  }
237 }
238 
239 void rgb16tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
240 {
241  int i, num_pixels = src_size >> 1;
242 
243  for (i = 0; i < num_pixels; i++) {
244  unsigned rgb = ((const uint16_t *)src)[i];
245  ((uint16_t *)dst)[i] = (rgb >> 11) | ((rgb & 0x7C0) >> 1) | ((rgb & 0x1F) << 10);
246  }
247 }
248 
249 void rgb15tobgr32(const uint8_t *src, uint8_t *dst, int src_size)
250 {
251  uint8_t *d = dst;
252  const uint16_t *s = (const uint16_t *)src;
253  const uint16_t *end = s + src_size / 2;
254 
255  while (s < end) {
256  register uint16_t bgr = *s++;
257 #if HAVE_BIGENDIAN
258  *d++ = 255;
259  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
260  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
261  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
262 #else
263  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
264  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
265  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
266  *d++ = 255;
267 #endif
268  }
269 }
270 
271 void rgb15to24(const uint8_t *src, uint8_t *dst, int src_size)
272 {
273  uint8_t *d = dst;
274  const uint16_t *s = (const uint16_t *)src;
275  const uint16_t *end = s + src_size / 2;
276 
277  while (s < end) {
278  register uint16_t bgr = *s++;
279  *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
280  *d++ = ((bgr&0x03E0)>>2) | ((bgr&0x03E0)>> 7);
281  *d++ = ((bgr&0x001F)<<3) | ((bgr&0x001F)>> 2);
282  }
283 }
284 
285 void rgb15tobgr16(const uint8_t *src, uint8_t *dst, int src_size)
286 {
287  int i, num_pixels = src_size >> 1;
288 
289  for (i = 0; i < num_pixels; i++) {
290  unsigned rgb = ((const uint16_t *)src)[i];
291  ((uint16_t *)dst)[i] = ((rgb & 0x7C00) >> 10) | ((rgb & 0x3E0) << 1) | (rgb << 11);
292  }
293 }
294 
295 void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size)
296 {
297  int i, num_pixels = src_size >> 1;
298 
299  for (i = 0; i < num_pixels; i++) {
300  unsigned rgb = ((const uint16_t *)src)[i];
301  unsigned br = rgb & 0x7C1F;
302  ((uint16_t *)dst)[i] = (br >> 10) | (rgb & 0x3E0) | (br << 10);
303  }
304 }
305 
306 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size)
307 {
308  uint16_t *d = (uint16_t *)dst;
309  uint16_t *s = (uint16_t *)src;
310  int i, num_pixels = src_size >> 1;
311 
312  for (i = 0; i < num_pixels; i++) {
313  unsigned rgb = s[i];
314  d[i] = (rgb << 8 | rgb & 0xF0 | rgb >> 8) & 0xFFF;
315  }
316 }
317 
318 
319 #define DEFINE_SHUFFLE_BYTES(a, b, c, d) \
320 void shuffle_bytes_ ## a ## b ## c ## d(const uint8_t *src, \
321  uint8_t *dst, int src_size) \
322 { \
323  int i; \
324  \
325  for (i = 0; i < src_size; i += 4) { \
326  dst[i + 0] = src[i + a]; \
327  dst[i + 1] = src[i + b]; \
328  dst[i + 2] = src[i + c]; \
329  dst[i + 3] = src[i + d]; \
330  } \
331 }
332 
333 DEFINE_SHUFFLE_BYTES(0, 3, 2, 1)
334 DEFINE_SHUFFLE_BYTES(1, 2, 3, 0)
335 DEFINE_SHUFFLE_BYTES(3, 0, 1, 2)
336 DEFINE_SHUFFLE_BYTES(3, 2, 1, 0)
337 
338 #define DEFINE_RGB48TOBGR48(need_bswap, swap) \
339 void rgb48tobgr48_ ## need_bswap(const uint8_t *src, \
340  uint8_t *dst, int src_size) \
341 { \
342  uint16_t *d = (uint16_t *)dst; \
343  uint16_t *s = (uint16_t *)src; \
344  int i, num_pixels = src_size >> 1; \
345  \
346  for (i = 0; i < num_pixels; i += 3) { \
347  d[i ] = swap ? av_bswap16(s[i + 2]) : s[i + 2]; \
348  d[i + 1] = swap ? av_bswap16(s[i + 1]) : s[i + 1]; \
349  d[i + 2] = swap ? av_bswap16(s[i ]) : s[i ]; \
350  } \
351 }
352 
353 DEFINE_RGB48TOBGR48(nobswap, 0)
354 DEFINE_RGB48TOBGR48(bswap, 1)
355 
356 #define DEFINE_RGB64TOBGR48(need_bswap, swap) \
357 void rgb64tobgr48_ ## need_bswap(const uint8_t *src, \
358  uint8_t *dst, int src_size) \
359 { \
360  uint16_t *d = (uint16_t *)dst; \
361  uint16_t *s = (uint16_t *)src; \
362  int i, num_pixels = src_size >> 3; \
363  \
364  for (i = 0; i < num_pixels; i++) { \
365  d[3 * i ] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
366  d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
367  d[3 * i + 2] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
368  } \
369 }
370 
371 DEFINE_RGB64TOBGR48(nobswap, 0)
372 DEFINE_RGB64TOBGR48(bswap, 1)
373 
374 #define DEFINE_RGB64TO48(need_bswap, swap) \
375 void rgb64to48_ ## need_bswap(const uint8_t *src, \
376  uint8_t *dst, int src_size) \
377 { \
378  uint16_t *d = (uint16_t *)dst; \
379  uint16_t *s = (uint16_t *)src; \
380  int i, num_pixels = src_size >> 3; \
381  \
382  for (i = 0; i < num_pixels; i++) { \
383  d[3 * i ] = swap ? av_bswap16(s[4 * i ]) : s[4 * i ]; \
384  d[3 * i + 1] = swap ? av_bswap16(s[4 * i + 1]) : s[4 * i + 1]; \
385  d[3 * i + 2] = swap ? av_bswap16(s[4 * i + 2]) : s[4 * i + 2]; \
386  } \
387 }
388 
389 DEFINE_RGB64TO48(nobswap, 0)
390 DEFINE_RGB64TO48(bswap, 1)
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