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1 /**************************************************************************
2  *
3  * Copyright 2010 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * The above copyright notice and this permission notice (including the
23  * next paragraph) shall be included in all copies or substantial portions
24  * of the Software.
25  *
26  **************************************************************************/
27 
28 
29 /**
30  * @file
31  * YUV colorspace conversion.
32  *
33  * @author Brian Paul <brianp@vmware.com>
34  * @author Michal Krol <michal@vmware.com>
35  * @author Jose Fonseca <jfonseca@vmware.com>
36  *
37  * See also:
38  * - http://www.fourcc.org/fccyvrgb.php
39  * - http://msdn.microsoft.com/en-us/library/ms893078
40  * - http://en.wikipedia.org/wiki/YUV
41  */
42 
43 
44 #ifndef U_FORMAT_YUV_H_
45 #define U_FORMAT_YUV_H_
46 
47 
48 #include "pipe/p_compiler.h"
49 #include "u_math.h"
50 
51 
52 /*
53  * TODO: Ensure we use consistent and right floating formulas, with enough
54  * precision in the coefficients.
55  */
56 
57 static inline void
util_format_rgb_float_to_yuv(float r,float g,float b,uint8_t * y,uint8_t * u,uint8_t * v)58 util_format_rgb_float_to_yuv(float r, float g, float b,
59                              uint8_t *y, uint8_t *u, uint8_t *v)
60 {
61    const float _r = CLAMP(r, 0.0f, 1.0f);
62    const float _g = CLAMP(g, 0.0f, 1.0f);
63    const float _b = CLAMP(b, 0.0f, 1.0f);
64 
65    const float scale = 255.0f;
66 
67    const int _y = scale * ( (0.257f * _r) + (0.504f * _g) + (0.098f * _b));
68    const int _u = scale * (-(0.148f * _r) - (0.291f * _g) + (0.439f * _b));
69    const int _v = scale * ( (0.439f * _r) - (0.368f * _g) - (0.071f * _b));
70 
71    *y = _y + 16;
72    *u = _u + 128;
73    *v = _v + 128;
74 }
75 
76 
77 static inline void
util_format_yuv_to_rgb_float(uint8_t y,uint8_t u,uint8_t v,float * r,float * g,float * b)78 util_format_yuv_to_rgb_float(uint8_t y, uint8_t u, uint8_t v,
79                              float *r, float *g, float *b)
80 {
81    const int _y = y - 16;
82    const int _u = u - 128;
83    const int _v = v - 128;
84 
85    const float y_factor = 255.0f / 219.0f;
86 
87    const float scale = 1.0f / 255.0f;
88 
89    *r = scale * (y_factor * _y               + 1.596f * _v);
90    *g = scale * (y_factor * _y - 0.391f * _u - 0.813f * _v);
91    *b = scale * (y_factor * _y + 2.018f * _u              );
92 }
93 
94 
95 static inline void
util_format_rgb_8unorm_to_yuv(uint8_t r,uint8_t g,uint8_t b,uint8_t * y,uint8_t * u,uint8_t * v)96 util_format_rgb_8unorm_to_yuv(uint8_t r, uint8_t g, uint8_t b,
97                 	      uint8_t *y, uint8_t *u, uint8_t *v)
98 {
99    *y = ((  66 * r + 129 * g +  25 * b + 128) >> 8) +  16;
100    *u = (( -38 * r -  74 * g + 112 * b + 128) >> 8) + 128;
101    *v = (( 112 * r -  94 * g -  18 * b + 128) >> 8) + 128;
102 }
103 
104 
105 static inline void
util_format_yuv_to_rgb_8unorm(uint8_t y,uint8_t u,uint8_t v,uint8_t * r,uint8_t * g,uint8_t * b)106 util_format_yuv_to_rgb_8unorm(uint8_t y, uint8_t u, uint8_t v,
107                               uint8_t *r, uint8_t *g, uint8_t *b)
108 {
109    const int _y = y - 16;
110    const int _u = u - 128;
111    const int _v = v - 128;
112 
113    const int _r = (298 * _y            + 409 * _v + 128) >> 8;
114    const int _g = (298 * _y - 100 * _u - 208 * _v + 128) >> 8;
115    const int _b = (298 * _y + 516 * _u            + 128) >> 8;
116 
117    *r = CLAMP(_r, 0, 255);
118    *g = CLAMP(_g, 0, 255);
119    *b = CLAMP(_b, 0, 255);
120 }
121 
122 
123 
124 void
125 util_format_uyvy_unpack_rgba_float(float *dst_row, unsigned dst_stride,
126                               const uint8_t *src_row, unsigned src_stride,
127                               unsigned width, unsigned height);
128 
129 void
130 util_format_uyvy_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
131                                const uint8_t *src_row, unsigned src_stride,
132                                unsigned width, unsigned height);
133 
134 void
135 util_format_uyvy_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
136                             const float *src_row, unsigned src_stride,
137                             unsigned width, unsigned height);
138 
139 void
140 util_format_uyvy_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
141                              const uint8_t *src_row, unsigned src_stride,
142                              unsigned width, unsigned height);
143 
144 void
145 util_format_uyvy_fetch_rgba_float(float *dst, const uint8_t *src,
146                              unsigned i, unsigned j);
147 
148 void
149 util_format_yuyv_unpack_rgba_float(float *dst_row, unsigned dst_stride,
150                               const uint8_t *src_row, unsigned src_stride,
151                               unsigned width, unsigned height);
152 
153 void
154 util_format_yuyv_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
155                                const uint8_t *src_row, unsigned src_stride,
156                                unsigned width, unsigned height);
157 
158 void
159 util_format_yuyv_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
160                             const float *src_row, unsigned src_stride,
161                             unsigned width, unsigned height);
162 
163 void
164 util_format_yuyv_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
165                              const uint8_t *src_row, unsigned src_stride,
166                              unsigned width, unsigned height);
167 
168 void
169 util_format_yuyv_fetch_rgba_float(float *dst, const uint8_t *src,
170                              unsigned i, unsigned j);
171 
172 /* XXX: Stubbed for now */
173 void
174 util_format_yv12_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
175                              const uint8_t *src_row, unsigned src_stride,
176                              unsigned width, unsigned height);
177 void
178 util_format_yv12_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
179                              const uint8_t *src_row, unsigned src_stride,
180                              unsigned width, unsigned height);
181 void
182 util_format_yv12_unpack_rgba_float(float *dst_row, unsigned dst_stride,
183                              const uint8_t *src_row, unsigned src_stride,
184                              unsigned width, unsigned height);
185 void
186 util_format_yv12_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
187                              const float *src_row, unsigned src_stride,
188                              unsigned width, unsigned height);
189 void
190 util_format_yv12_fetch_rgba_float(float *dst, const uint8_t *src,
191                              unsigned i, unsigned j);
192 void
193 util_format_yv16_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
194                              const uint8_t *src_row, unsigned src_stride,
195                              unsigned width, unsigned height);
196 void
197 util_format_yv16_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
198                              const uint8_t *src_row, unsigned src_stride,
199                              unsigned width, unsigned height);
200 void
201 util_format_yv16_unpack_rgba_float(float *dst_row, unsigned dst_stride,
202                              const uint8_t *src_row, unsigned src_stride,
203                              unsigned width, unsigned height);
204 void
205 util_format_yv16_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
206                              const float *src_row, unsigned src_stride,
207                              unsigned width, unsigned height);
208 void
209 util_format_yv16_fetch_rgba_float(float *dst, const uint8_t *src,
210                              unsigned i, unsigned j);
211 void
212 util_format_iyuv_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
213                              const uint8_t *src_row, unsigned src_stride,
214                              unsigned width, unsigned height);
215 void
216 util_format_iyuv_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
217                              const uint8_t *src_row, unsigned src_stride,
218                              unsigned width, unsigned height);
219 void
220 util_format_iyuv_unpack_rgba_float(float *dst_row, unsigned dst_stride,
221                              const uint8_t *src_row, unsigned src_stride,
222                              unsigned width, unsigned height);
223 void
224 util_format_iyuv_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
225                              const float *src_row, unsigned src_stride,
226                              unsigned width, unsigned height);
227 void
228 util_format_iyuv_fetch_rgba_float(float *dst, const uint8_t *src,
229                              unsigned i, unsigned j);
230 void
231 util_format_nv12_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
232                              const uint8_t *src_row, unsigned src_stride,
233                              unsigned width, unsigned height);
234 void
235 util_format_nv12_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
236                              const uint8_t *src_row, unsigned src_stride,
237                              unsigned width, unsigned height);
238 void
239 util_format_nv12_unpack_rgba_float(float *dst_row, unsigned dst_stride,
240                              const uint8_t *src_row, unsigned src_stride,
241                              unsigned width, unsigned height);
242 void
243 util_format_nv12_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
244                              const float *src_row, unsigned src_stride,
245                              unsigned width, unsigned height);
246 void
247 util_format_nv12_fetch_rgba_float(float *dst, const uint8_t *src,
248                              unsigned i, unsigned j);
249 void
250 util_format_nv21_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
251                              const uint8_t *src_row, unsigned src_stride,
252                              unsigned width, unsigned height);
253 void
254 util_format_nv21_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
255                              const uint8_t *src_row, unsigned src_stride,
256                              unsigned width, unsigned height);
257 void
258 util_format_nv21_unpack_rgba_float(float *dst_row, unsigned dst_stride,
259                              const uint8_t *src_row, unsigned src_stride,
260                              unsigned width, unsigned height);
261 void
262 util_format_nv21_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
263                              const float *src_row, unsigned src_stride,
264                              unsigned width, unsigned height);
265 void
266 util_format_nv21_fetch_rgba_float(float *dst, const uint8_t *src,
267                              unsigned i, unsigned j);
268 void
269 util_format_p016_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
270                              const uint8_t *src_row, unsigned src_stride,
271                              unsigned width, unsigned height);
272 void
273 util_format_p016_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
274                              const uint8_t *src_row, unsigned src_stride,
275                              unsigned width, unsigned height);
276 void
277 util_format_p016_unpack_rgba_float(float *dst_row, unsigned dst_stride,
278                              const uint8_t *src_row, unsigned src_stride,
279                              unsigned width, unsigned height);
280 void
281 util_format_p016_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
282                              const float *src_row, unsigned src_stride,
283                              unsigned width, unsigned height);
284 void
285 util_format_p016_fetch_rgba_float(float *dst, const uint8_t *src,
286                              unsigned i, unsigned j);
287 void
288 util_format_r8g8_b8g8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
289                                          const uint8_t *src_row, unsigned src_stride,
290                                          unsigned width, unsigned height);
291 
292 void
293 util_format_r8g8_b8g8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
294                                           const uint8_t *src_row, unsigned src_stride,
295                                           unsigned width, unsigned height);
296 
297 void
298 util_format_r8g8_b8g8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
299                                        const float *src_row, unsigned src_stride,
300                                        unsigned width, unsigned height);
301 
302 void
303 util_format_r8g8_b8g8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
304                                         const uint8_t *src_row, unsigned src_stride,
305                                         unsigned width, unsigned height);
306 
307 void
308 util_format_r8g8_b8g8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
309                                         unsigned i, unsigned j);
310 
311 void
312 util_format_g8r8_g8b8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
313                                          const uint8_t *src_row, unsigned src_stride,
314                                          unsigned width, unsigned height);
315 
316 void
317 util_format_g8r8_g8b8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
318                                           const uint8_t *src_row, unsigned src_stride,
319                                           unsigned width, unsigned height);
320 
321 void
322 util_format_g8r8_g8b8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
323                                        const float *src_row, unsigned src_stride,
324                                        unsigned width, unsigned height);
325 
326 void
327 util_format_g8r8_g8b8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
328                                         const uint8_t *src_row, unsigned src_stride,
329                                         unsigned width, unsigned height);
330 
331 void
332 util_format_g8r8_g8b8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
333                                         unsigned i, unsigned j);
334 
335 void
336 util_format_r8g8_r8b8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
337                                          const uint8_t *src_row, unsigned src_stride,
338                                          unsigned width, unsigned height);
339 
340 void
341 util_format_r8g8_r8b8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
342                                           const uint8_t *src_row, unsigned src_stride,
343                                           unsigned width, unsigned height);
344 
345 void
346 util_format_r8g8_r8b8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
347                                        const float *src_row, unsigned src_stride,
348                                        unsigned width, unsigned height);
349 
350 void
351 util_format_r8g8_r8b8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
352                                         const uint8_t *src_row, unsigned src_stride,
353                                         unsigned width, unsigned height);
354 
355 void
356 util_format_r8g8_r8b8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
357                                         unsigned i, unsigned j);
358 
359 void
360 util_format_g8r8_b8r8_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
361                                          const uint8_t *src_row, unsigned src_stride,
362                                          unsigned width, unsigned height);
363 
364 void
365 util_format_g8r8_b8r8_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
366                                           const uint8_t *src_row, unsigned src_stride,
367                                           unsigned width, unsigned height);
368 
369 void
370 util_format_g8r8_b8r8_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
371                                        const float *src_row, unsigned src_stride,
372                                        unsigned width, unsigned height);
373 
374 void
375 util_format_g8r8_b8r8_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
376                                         const uint8_t *src_row, unsigned src_stride,
377                                         unsigned width, unsigned height);
378 
379 void
380 util_format_g8r8_b8r8_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
381                                         unsigned i, unsigned j);
382 
383 #endif /* U_FORMAT_YUV_H_ */
384