FFmpeg
format.c
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1 /*
2  * Copyright (C) 2024 Niklas Haas
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavutil/avassert.h"
23 #include "libavutil/hdr_dynamic_metadata.h"
24 #include "libavutil/mastering_display_metadata.h"
25 #include "libavutil/refstruct.h"
26 
27 #include "format.h"
28 #include "csputils.h"
29 #include "ops_internal.h"
30 #include "config_components.h"
31 
32 #if CONFIG_UNSTABLE
33 #include "libavutil/hwcontext.h"
34 #endif
35 
36 #define Q(N) ((AVRational) { N, 1 })
37 #define Q0 Q(0)
38 #define Q1 Q(1)
39 
40 #define RET(x) \
41  do { \
42  int _ret = (x); \
43  if (_ret < 0) \
44  return _ret; \
45  } while (0)
46 
47 typedef struct LegacyFormatEntry {
48  uint8_t is_supported_in :1;
49  uint8_t is_supported_out :1;
50  uint8_t is_supported_endianness :1;
51 } LegacyFormatEntry;
52 
53 /* Format support table for legacy swscale */
54 static const LegacyFormatEntry legacy_format_entries[] = {
55  [AV_PIX_FMT_YUV420P] = { 1, 1 },
56  [AV_PIX_FMT_YUYV422] = { 1, 1 },
57  [AV_PIX_FMT_RGB24] = { 1, 1 },
58  [AV_PIX_FMT_BGR24] = { 1, 1 },
59  [AV_PIX_FMT_YUV422P] = { 1, 1 },
60  [AV_PIX_FMT_YUV444P] = { 1, 1 },
61  [AV_PIX_FMT_YUV410P] = { 1, 1 },
62  [AV_PIX_FMT_YUV411P] = { 1, 1 },
63  [AV_PIX_FMT_GRAY8] = { 1, 1 },
64  [AV_PIX_FMT_MONOWHITE] = { 1, 1 },
65  [AV_PIX_FMT_MONOBLACK] = { 1, 1 },
66  [AV_PIX_FMT_PAL8] = { 1, 0 },
67  [AV_PIX_FMT_YUVJ420P] = { 1, 1 },
68  [AV_PIX_FMT_YUVJ411P] = { 1, 1 },
69  [AV_PIX_FMT_YUVJ422P] = { 1, 1 },
70  [AV_PIX_FMT_YUVJ444P] = { 1, 1 },
71  [AV_PIX_FMT_YVYU422] = { 1, 1 },
72  [AV_PIX_FMT_UYVY422] = { 1, 1 },
73  [AV_PIX_FMT_UYYVYY411] = { 1, 0 },
74  [AV_PIX_FMT_BGR8] = { 1, 1 },
75  [AV_PIX_FMT_BGR4] = { 0, 1 },
76  [AV_PIX_FMT_BGR4_BYTE] = { 1, 1 },
77  [AV_PIX_FMT_RGB8] = { 1, 1 },
78  [AV_PIX_FMT_RGB4] = { 0, 1 },
79  [AV_PIX_FMT_RGB4_BYTE] = { 1, 1 },
80  [AV_PIX_FMT_NV12] = { 1, 1 },
81  [AV_PIX_FMT_NV21] = { 1, 1 },
82  [AV_PIX_FMT_ARGB] = { 1, 1 },
83  [AV_PIX_FMT_RGBA] = { 1, 1 },
84  [AV_PIX_FMT_ABGR] = { 1, 1 },
85  [AV_PIX_FMT_BGRA] = { 1, 1 },
86  [AV_PIX_FMT_0RGB] = { 1, 1 },
87  [AV_PIX_FMT_RGB0] = { 1, 1 },
88  [AV_PIX_FMT_0BGR] = { 1, 1 },
89  [AV_PIX_FMT_BGR0] = { 1, 1 },
90  [AV_PIX_FMT_GRAY9BE] = { 1, 1 },
91  [AV_PIX_FMT_GRAY9LE] = { 1, 1 },
92  [AV_PIX_FMT_GRAY10BE] = { 1, 1 },
93  [AV_PIX_FMT_GRAY10LE] = { 1, 1 },
94  [AV_PIX_FMT_GRAY12BE] = { 1, 1 },
95  [AV_PIX_FMT_GRAY12LE] = { 1, 1 },
96  [AV_PIX_FMT_GRAY14BE] = { 1, 1 },
97  [AV_PIX_FMT_GRAY14LE] = { 1, 1 },
98  [AV_PIX_FMT_GRAY16BE] = { 1, 1 },
99  [AV_PIX_FMT_GRAY16LE] = { 1, 1 },
100  [AV_PIX_FMT_YUV440P] = { 1, 1 },
101  [AV_PIX_FMT_YUVJ440P] = { 1, 1 },
102  [AV_PIX_FMT_YUV440P10LE] = { 1, 1 },
103  [AV_PIX_FMT_YUV440P10BE] = { 1, 1 },
104  [AV_PIX_FMT_YUV440P12LE] = { 1, 1 },
105  [AV_PIX_FMT_YUV440P12BE] = { 1, 1 },
106  [AV_PIX_FMT_YUVA420P] = { 1, 1 },
107  [AV_PIX_FMT_YUVA422P] = { 1, 1 },
108  [AV_PIX_FMT_YUVA444P] = { 1, 1 },
109  [AV_PIX_FMT_YUVA420P9BE] = { 1, 1 },
110  [AV_PIX_FMT_YUVA420P9LE] = { 1, 1 },
111  [AV_PIX_FMT_YUVA422P9BE] = { 1, 1 },
112  [AV_PIX_FMT_YUVA422P9LE] = { 1, 1 },
113  [AV_PIX_FMT_YUVA444P9BE] = { 1, 1 },
114  [AV_PIX_FMT_YUVA444P9LE] = { 1, 1 },
115  [AV_PIX_FMT_YUVA420P10BE] = { 1, 1 },
116  [AV_PIX_FMT_YUVA420P10LE] = { 1, 1 },
117  [AV_PIX_FMT_YUVA422P10BE] = { 1, 1 },
118  [AV_PIX_FMT_YUVA422P10LE] = { 1, 1 },
119  [AV_PIX_FMT_YUVA444P10BE] = { 1, 1 },
120  [AV_PIX_FMT_YUVA444P10LE] = { 1, 1 },
121  [AV_PIX_FMT_YUVA420P16BE] = { 1, 1 },
122  [AV_PIX_FMT_YUVA420P16LE] = { 1, 1 },
123  [AV_PIX_FMT_YUVA422P16BE] = { 1, 1 },
124  [AV_PIX_FMT_YUVA422P16LE] = { 1, 1 },
125  [AV_PIX_FMT_YUVA444P16BE] = { 1, 1 },
126  [AV_PIX_FMT_YUVA444P16LE] = { 1, 1 },
127  [AV_PIX_FMT_RGB48BE] = { 1, 1 },
128  [AV_PIX_FMT_RGB48LE] = { 1, 1 },
129  [AV_PIX_FMT_RGBA64BE] = { 1, 1, 1 },
130  [AV_PIX_FMT_RGBA64LE] = { 1, 1, 1 },
131  [AV_PIX_FMT_RGB565BE] = { 1, 1 },
132  [AV_PIX_FMT_RGB565LE] = { 1, 1 },
133  [AV_PIX_FMT_RGB555BE] = { 1, 1 },
134  [AV_PIX_FMT_RGB555LE] = { 1, 1 },
135  [AV_PIX_FMT_BGR565BE] = { 1, 1 },
136  [AV_PIX_FMT_BGR565LE] = { 1, 1 },
137  [AV_PIX_FMT_BGR555BE] = { 1, 1 },
138  [AV_PIX_FMT_BGR555LE] = { 1, 1 },
139  [AV_PIX_FMT_YUV420P16LE] = { 1, 1 },
140  [AV_PIX_FMT_YUV420P16BE] = { 1, 1 },
141  [AV_PIX_FMT_YUV422P16LE] = { 1, 1 },
142  [AV_PIX_FMT_YUV422P16BE] = { 1, 1 },
143  [AV_PIX_FMT_YUV444P16LE] = { 1, 1 },
144  [AV_PIX_FMT_YUV444P16BE] = { 1, 1 },
145  [AV_PIX_FMT_RGB444LE] = { 1, 1 },
146  [AV_PIX_FMT_RGB444BE] = { 1, 1 },
147  [AV_PIX_FMT_BGR444LE] = { 1, 1 },
148  [AV_PIX_FMT_BGR444BE] = { 1, 1 },
149  [AV_PIX_FMT_YA8] = { 1, 1 },
150  [AV_PIX_FMT_YA16BE] = { 1, 1 },
151  [AV_PIX_FMT_YA16LE] = { 1, 1 },
152  [AV_PIX_FMT_BGR48BE] = { 1, 1 },
153  [AV_PIX_FMT_BGR48LE] = { 1, 1 },
154  [AV_PIX_FMT_BGRA64BE] = { 1, 1, 1 },
155  [AV_PIX_FMT_BGRA64LE] = { 1, 1, 1 },
156  [AV_PIX_FMT_YUV420P9BE] = { 1, 1 },
157  [AV_PIX_FMT_YUV420P9LE] = { 1, 1 },
158  [AV_PIX_FMT_YUV420P10BE] = { 1, 1 },
159  [AV_PIX_FMT_YUV420P10LE] = { 1, 1 },
160  [AV_PIX_FMT_YUV420P12BE] = { 1, 1 },
161  [AV_PIX_FMT_YUV420P12LE] = { 1, 1 },
162  [AV_PIX_FMT_YUV420P14BE] = { 1, 1 },
163  [AV_PIX_FMT_YUV420P14LE] = { 1, 1 },
164  [AV_PIX_FMT_YUV422P9BE] = { 1, 1 },
165  [AV_PIX_FMT_YUV422P9LE] = { 1, 1 },
166  [AV_PIX_FMT_YUV422P10BE] = { 1, 1 },
167  [AV_PIX_FMT_YUV422P10LE] = { 1, 1 },
168  [AV_PIX_FMT_YUV422P12BE] = { 1, 1 },
169  [AV_PIX_FMT_YUV422P12LE] = { 1, 1 },
170  [AV_PIX_FMT_YUV422P14BE] = { 1, 1 },
171  [AV_PIX_FMT_YUV422P14LE] = { 1, 1 },
172  [AV_PIX_FMT_YUV444P9BE] = { 1, 1 },
173  [AV_PIX_FMT_YUV444P9LE] = { 1, 1 },
174  [AV_PIX_FMT_YUV444P10BE] = { 1, 1 },
175  [AV_PIX_FMT_YUV444P10LE] = { 1, 1 },
176  [AV_PIX_FMT_YUV444P12BE] = { 1, 1 },
177  [AV_PIX_FMT_YUV444P12LE] = { 1, 1 },
178  [AV_PIX_FMT_YUV444P14BE] = { 1, 1 },
179  [AV_PIX_FMT_YUV444P14LE] = { 1, 1 },
180  [AV_PIX_FMT_YUV444P10MSBBE] = { 1, 1 },
181  [AV_PIX_FMT_YUV444P10MSBLE] = { 1, 1 },
182  [AV_PIX_FMT_YUV444P12MSBBE] = { 1, 1 },
183  [AV_PIX_FMT_YUV444P12MSBLE] = { 1, 1 },
184  [AV_PIX_FMT_GBRP] = { 1, 1 },
185  [AV_PIX_FMT_GBRP9LE] = { 1, 1 },
186  [AV_PIX_FMT_GBRP9BE] = { 1, 1 },
187  [AV_PIX_FMT_GBRP10LE] = { 1, 1 },
188  [AV_PIX_FMT_GBRP10BE] = { 1, 1 },
189  [AV_PIX_FMT_GBRAP10LE] = { 1, 1 },
190  [AV_PIX_FMT_GBRAP10BE] = { 1, 1 },
191  [AV_PIX_FMT_GBRP10MSBLE] = { 1, 1 },
192  [AV_PIX_FMT_GBRP10MSBBE] = { 1, 1 },
193  [AV_PIX_FMT_GBRP12LE] = { 1, 1 },
194  [AV_PIX_FMT_GBRP12BE] = { 1, 1 },
195  [AV_PIX_FMT_GBRP12MSBLE] = { 1, 1 },
196  [AV_PIX_FMT_GBRP12MSBBE] = { 1, 1 },
197  [AV_PIX_FMT_GBRAP12LE] = { 1, 1 },
198  [AV_PIX_FMT_GBRAP12BE] = { 1, 1 },
199  [AV_PIX_FMT_GBRP14LE] = { 1, 1 },
200  [AV_PIX_FMT_GBRP14BE] = { 1, 1 },
201  [AV_PIX_FMT_GBRAP14LE] = { 1, 1 },
202  [AV_PIX_FMT_GBRAP14BE] = { 1, 1 },
203  [AV_PIX_FMT_GBRP16LE] = { 1, 1 },
204  [AV_PIX_FMT_GBRP16BE] = { 1, 1 },
205  [AV_PIX_FMT_GBRPF32LE] = { 1, 1 },
206  [AV_PIX_FMT_GBRPF32BE] = { 1, 1 },
207  [AV_PIX_FMT_GBRAPF32LE] = { 1, 1 },
208  [AV_PIX_FMT_GBRAPF32BE] = { 1, 1 },
209  [AV_PIX_FMT_GBRPF16LE] = { 1, 0 },
210  [AV_PIX_FMT_GBRPF16BE] = { 1, 0 },
211  [AV_PIX_FMT_GBRAPF16LE] = { 1, 0 },
212  [AV_PIX_FMT_GBRAPF16BE] = { 1, 0 },
213  [AV_PIX_FMT_GBRAP] = { 1, 1 },
214  [AV_PIX_FMT_GBRAP16LE] = { 1, 1 },
215  [AV_PIX_FMT_GBRAP16BE] = { 1, 1 },
216  [AV_PIX_FMT_BAYER_BGGR8] = { 1, 0 },
217  [AV_PIX_FMT_BAYER_RGGB8] = { 1, 0 },
218  [AV_PIX_FMT_BAYER_GBRG8] = { 1, 0 },
219  [AV_PIX_FMT_BAYER_GRBG8] = { 1, 0 },
220  [AV_PIX_FMT_BAYER_BGGR16LE] = { 1, 0 },
221  [AV_PIX_FMT_BAYER_BGGR16BE] = { 1, 0 },
222  [AV_PIX_FMT_BAYER_RGGB16LE] = { 1, 0 },
223  [AV_PIX_FMT_BAYER_RGGB16BE] = { 1, 0 },
224  [AV_PIX_FMT_BAYER_GBRG16LE] = { 1, 0 },
225  [AV_PIX_FMT_BAYER_GBRG16BE] = { 1, 0 },
226  [AV_PIX_FMT_BAYER_GRBG16LE] = { 1, 0 },
227  [AV_PIX_FMT_BAYER_GRBG16BE] = { 1, 0 },
228  [AV_PIX_FMT_XYZ12BE] = { 1, 1, 1 },
229  [AV_PIX_FMT_XYZ12LE] = { 1, 1, 1 },
230  [AV_PIX_FMT_AYUV64LE] = { 1, 1},
231  [AV_PIX_FMT_AYUV64BE] = { 1, 1 },
232  [AV_PIX_FMT_P010LE] = { 1, 1 },
233  [AV_PIX_FMT_P010BE] = { 1, 1 },
234  [AV_PIX_FMT_P012LE] = { 1, 1 },
235  [AV_PIX_FMT_P012BE] = { 1, 1 },
236  [AV_PIX_FMT_P016LE] = { 1, 1 },
237  [AV_PIX_FMT_P016BE] = { 1, 1 },
238  [AV_PIX_FMT_GRAYF32LE] = { 1, 1 },
239  [AV_PIX_FMT_GRAYF32BE] = { 1, 1 },
240  [AV_PIX_FMT_GRAYF16LE] = { 1, 0 },
241  [AV_PIX_FMT_GRAYF16BE] = { 1, 0 },
242  [AV_PIX_FMT_YAF32LE] = { 1, 0 },
243  [AV_PIX_FMT_YAF32BE] = { 1, 0 },
244  [AV_PIX_FMT_YAF16LE] = { 1, 0 },
245  [AV_PIX_FMT_YAF16BE] = { 1, 0 },
246  [AV_PIX_FMT_YUVA422P12BE] = { 1, 1 },
247  [AV_PIX_FMT_YUVA422P12LE] = { 1, 1 },
248  [AV_PIX_FMT_YUVA444P12BE] = { 1, 1 },
249  [AV_PIX_FMT_YUVA444P12LE] = { 1, 1 },
250  [AV_PIX_FMT_NV24] = { 1, 1 },
251  [AV_PIX_FMT_NV42] = { 1, 1 },
252  [AV_PIX_FMT_Y210LE] = { 1, 1 },
253  [AV_PIX_FMT_Y212LE] = { 1, 1 },
254  [AV_PIX_FMT_Y216LE] = { 1, 1 },
255  [AV_PIX_FMT_X2RGB10LE] = { 1, 1 },
256  [AV_PIX_FMT_X2BGR10LE] = { 1, 1 },
257  [AV_PIX_FMT_NV20BE] = { 1, 1 },
258  [AV_PIX_FMT_NV20LE] = { 1, 1 },
259  [AV_PIX_FMT_P210BE] = { 1, 1 },
260  [AV_PIX_FMT_P210LE] = { 1, 1 },
261  [AV_PIX_FMT_P212BE] = { 1, 1 },
262  [AV_PIX_FMT_P212LE] = { 1, 1 },
263  [AV_PIX_FMT_P410BE] = { 1, 1 },
264  [AV_PIX_FMT_P410LE] = { 1, 1 },
265  [AV_PIX_FMT_P412BE] = { 1, 1 },
266  [AV_PIX_FMT_P412LE] = { 1, 1 },
267  [AV_PIX_FMT_P216BE] = { 1, 1 },
268  [AV_PIX_FMT_P216LE] = { 1, 1 },
269  [AV_PIX_FMT_P416BE] = { 1, 1 },
270  [AV_PIX_FMT_P416LE] = { 1, 1 },
271  [AV_PIX_FMT_NV16] = { 1, 1 },
272  [AV_PIX_FMT_VUYA] = { 1, 1 },
273  [AV_PIX_FMT_VUYX] = { 1, 1 },
274  [AV_PIX_FMT_RGBAF16BE] = { 1, 0 },
275  [AV_PIX_FMT_RGBAF16LE] = { 1, 0 },
276  [AV_PIX_FMT_RGBF16BE] = { 1, 0 },
277  [AV_PIX_FMT_RGBF16LE] = { 1, 0 },
278  [AV_PIX_FMT_RGBF32BE] = { 1, 0 },
279  [AV_PIX_FMT_RGBF32LE] = { 1, 0 },
280  [AV_PIX_FMT_XV30LE] = { 1, 1 },
281  [AV_PIX_FMT_XV36LE] = { 1, 1 },
282  [AV_PIX_FMT_XV36BE] = { 1, 1 },
283  [AV_PIX_FMT_XV48LE] = { 1, 1 },
284  [AV_PIX_FMT_XV48BE] = { 1, 1 },
285  [AV_PIX_FMT_AYUV] = { 1, 1 },
286  [AV_PIX_FMT_UYVA] = { 1, 1 },
287  [AV_PIX_FMT_VYU444] = { 1, 1 },
288  [AV_PIX_FMT_V30XLE] = { 1, 1 },
289 };
290 
291 int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
292 {
293  return (unsigned)pix_fmt < FF_ARRAY_ELEMS(legacy_format_entries) ?
294  legacy_format_entries[pix_fmt].is_supported_in : 0;
295 }
296 
297 int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
298 {
299  return (unsigned)pix_fmt < FF_ARRAY_ELEMS(legacy_format_entries) ?
300  legacy_format_entries[pix_fmt].is_supported_out : 0;
301 }
302 
303 int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
304 {
305  return (unsigned)pix_fmt < FF_ARRAY_ELEMS(legacy_format_entries) ?
306  legacy_format_entries[pix_fmt].is_supported_endianness : 0;
307 }
308 
309 static void sanitize_fmt(SwsFormat *fmt, const AVPixFmtDescriptor *desc)
310 {
311  if (desc->flags & (AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_BAYER)) {
312  /* RGB-like family */
313  fmt->csp = AVCOL_SPC_RGB;
314  fmt->range = AVCOL_RANGE_JPEG;
315  } else if (desc->flags & AV_PIX_FMT_FLAG_XYZ) {
316  fmt->csp = AVCOL_SPC_UNSPECIFIED;
317  fmt->color = (SwsColor) {
318  .prim = AVCOL_PRI_BT709, /* swscale currently hard-codes this XYZ matrix */
319  .trc = AVCOL_TRC_SMPTE428,
320  };
321  } else if (desc->nb_components < 3) {
322  /* Grayscale formats */
323  fmt->color.prim = AVCOL_PRI_UNSPECIFIED;
324  fmt->csp = AVCOL_SPC_UNSPECIFIED;
325  if (desc->flags & AV_PIX_FMT_FLAG_FLOAT)
326  fmt->range = AVCOL_RANGE_UNSPECIFIED;
327  else
328  fmt->range = AVCOL_RANGE_JPEG; // FIXME: this restriction should be lifted
329  }
330 
331  switch (av_pix_fmt_desc_get_id(desc)) {
332  case AV_PIX_FMT_YUVJ420P:
333  case AV_PIX_FMT_YUVJ411P:
334  case AV_PIX_FMT_YUVJ422P:
335  case AV_PIX_FMT_YUVJ444P:
336  case AV_PIX_FMT_YUVJ440P:
337  fmt->range = AVCOL_RANGE_JPEG;
338  break;
339  }
340 
341  if (!desc->log2_chroma_w && !desc->log2_chroma_h)
342  fmt->loc = AVCHROMA_LOC_UNSPECIFIED;
343 }
344 
345 /**
346  * This function also sanitizes and strips the input data, removing irrelevant
347  * fields for certain formats.
348  */
349 SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field)
350 {
351  const AVColorPrimariesDesc *primaries;
352  AVFrameSideData *sd;
353 
354  enum AVPixelFormat format = frame->format;
355  enum AVPixelFormat hw_format = AV_PIX_FMT_NONE;
356 
357 #if CONFIG_UNSTABLE
358  if (frame->hw_frames_ctx) {
359  AVHWFramesContext *hwfc = (AVHWFramesContext *)frame->hw_frames_ctx->data;
360  hw_format = frame->format;
361  format = hwfc->sw_format;
362  }
363 #endif
364 
365  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(format);
366 
367  SwsFormat fmt = {
368  .width = frame->width,
369  .height = frame->height,
370  .format = format,
371  .hw_format = hw_format,
372  .range = frame->color_range,
373  .csp = frame->colorspace,
374  .loc = frame->chroma_location,
375  .desc = desc,
376  .color = {
377  .prim = frame->color_primaries,
378  .trc = frame->color_trc,
379  },
380  };
381 
382  av_assert1(fmt.width > 0);
383  av_assert1(fmt.height > 0);
384  av_assert1(fmt.format != AV_PIX_FMT_NONE);
385  av_assert0(desc);
386  sanitize_fmt(&fmt, desc);
387 
388  if (frame->flags & AV_FRAME_FLAG_INTERLACED) {
389  fmt.height = (fmt.height + (field == FIELD_TOP)) >> 1;
390  fmt.interlaced = 1;
391  }
392 
393  /* Set luminance and gamut information */
394  fmt.color.min_luma = av_make_q(0, 1);
395  switch (fmt.color.trc) {
396  case AVCOL_TRC_SMPTE2084:
397  fmt.color.max_luma = av_make_q(10000, 1); break;
398  case AVCOL_TRC_ARIB_STD_B67:
399  fmt.color.max_luma = av_make_q( 1000, 1); break; /* HLG reference display */
400  default:
401  fmt.color.max_luma = av_make_q( 203, 1); break; /* SDR reference brightness */
402  }
403 
404  primaries = av_csp_primaries_desc_from_id(fmt.color.prim);
405  if (primaries)
406  fmt.color.gamut = primaries->prim;
407 
408  if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA))) {
409  const AVMasteringDisplayMetadata *mdm = (const AVMasteringDisplayMetadata *) sd->data;
410  if (mdm->has_luminance) {
411  fmt.color.min_luma = mdm->min_luminance;
412  fmt.color.max_luma = mdm->max_luminance;
413  }
414 
415  if (mdm->has_primaries) {
416  /* Ignore mastering display white point as it has no bearance on
417  * the underlying content */
418  fmt.color.gamut.r.x = mdm->display_primaries[0][0];
419  fmt.color.gamut.r.y = mdm->display_primaries[0][1];
420  fmt.color.gamut.g.x = mdm->display_primaries[1][0];
421  fmt.color.gamut.g.y = mdm->display_primaries[1][1];
422  fmt.color.gamut.b.x = mdm->display_primaries[2][0];
423  fmt.color.gamut.b.y = mdm->display_primaries[2][1];
424  }
425  }
426 
427  if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_DYNAMIC_HDR_PLUS))) {
428  const AVDynamicHDRPlus *dhp = (const AVDynamicHDRPlus *) sd->data;
429  const AVHDRPlusColorTransformParams *pars = &dhp->params[0];
430  const AVRational nits = av_make_q(10000, 1);
431  AVRational maxrgb = pars->maxscl[0];
432 
433  if (!dhp->num_windows || dhp->application_version > 1)
434  goto skip_hdr10;
435 
436  /* Maximum of MaxSCL components */
437  if (av_cmp_q(pars->maxscl[1], maxrgb) > 0)
438  maxrgb = pars->maxscl[1];
439  if (av_cmp_q(pars->maxscl[2], maxrgb) > 0)
440  maxrgb = pars->maxscl[2];
441 
442  if (maxrgb.num > 0) {
443  /* Estimate true luminance from MaxSCL */
444  const AVLumaCoefficients *luma = av_csp_luma_coeffs_from_avcsp(fmt.csp);
445  if (!luma)
446  goto skip_hdr10;
447  fmt.color.frame_peak = av_add_q(av_mul_q(luma->cr, pars->maxscl[0]),
448  av_add_q(av_mul_q(luma->cg, pars->maxscl[1]),
449  av_mul_q(luma->cb, pars->maxscl[2])));
450  /* Scale the scene average brightness by the ratio between the
451  * maximum luminance and the MaxRGB values */
452  fmt.color.frame_avg = av_mul_q(pars->average_maxrgb,
453  av_div_q(fmt.color.frame_peak, maxrgb));
454  } else {
455  /**
456  * Calculate largest value from histogram to use as fallback for
457  * clips with missing MaxSCL information. Note that this may end
458  * up picking the "reserved" value at the 5% percentile, which in
459  * practice appears to track the brightest pixel in the scene.
460  */
461  for (int i = 0; i < pars->num_distribution_maxrgb_percentiles; i++) {
462  const AVRational pct = pars->distribution_maxrgb[i].percentile;
463  if (av_cmp_q(pct, maxrgb) > 0)
464  maxrgb = pct;
465  fmt.color.frame_peak = maxrgb;
466  fmt.color.frame_avg = pars->average_maxrgb;
467  }
468  }
469 
470  /* Rescale to nits */
471  fmt.color.frame_peak = av_mul_q(nits, fmt.color.frame_peak);
472  fmt.color.frame_avg = av_mul_q(nits, fmt.color.frame_avg);
473  }
474 skip_hdr10:
475 
476  /* PQ is always scaled down to absolute zero, so ignore mastering metadata */
477  if (fmt.color.trc == AVCOL_TRC_SMPTE2084)
478  fmt.color.min_luma = av_make_q(0, 1);
479 
480  return fmt;
481 }
482 
483 void ff_fmt_from_pixfmt(enum AVPixelFormat pixfmt, SwsFormat *fmt)
484 {
485  ff_fmt_clear(fmt);
486  fmt->format = pixfmt;
487  fmt->desc = av_pix_fmt_desc_get(pixfmt);
488  sanitize_fmt(fmt, fmt->desc);
489 }
490 
491 static int infer_prim_ref(SwsColor *csp, const SwsColor *ref)
492 {
493  if (csp->prim != AVCOL_PRI_UNSPECIFIED)
494  return 0;
495 
496  /* Reuse the reference gamut only for "safe", similar primaries */
497  switch (ref->prim) {
498  case AVCOL_PRI_BT709:
499  case AVCOL_PRI_BT470M:
500  case AVCOL_PRI_BT470BG:
501  case AVCOL_PRI_SMPTE170M:
502  case AVCOL_PRI_SMPTE240M:
503  csp->prim = ref->prim;
504  csp->gamut = ref->gamut;
505  break;
506  default:
507  csp->prim = AVCOL_PRI_BT709;
508  csp->gamut = av_csp_primaries_desc_from_id(csp->prim)->prim;
509  break;
510  }
511 
512  return 1;
513 }
514 
515 static int infer_trc_ref(SwsColor *csp, const SwsColor *ref)
516 {
517  if (csp->trc != AVCOL_TRC_UNSPECIFIED)
518  return 0;
519 
520  /* Pick a suitable SDR transfer function, to try and minimize conversions */
521  switch (ref->trc) {
522  case AVCOL_TRC_UNSPECIFIED:
523  /* HDR curves, never default to these */
524  case AVCOL_TRC_SMPTE2084:
525  case AVCOL_TRC_ARIB_STD_B67:
526  csp->trc = AVCOL_TRC_BT709;
527  csp->min_luma = av_make_q(0, 1);
528  csp->max_luma = av_make_q(203, 1);
529  break;
530  default:
531  csp->trc = ref->trc;
532  csp->min_luma = ref->min_luma;
533  csp->max_luma = ref->max_luma;
534  break;
535  }
536 
537  return 1;
538 }
539 
540 bool ff_infer_colors(SwsColor *src, SwsColor *dst)
541 {
542  int incomplete = 0;
543 
544  incomplete |= infer_prim_ref(dst, src);
545  incomplete |= infer_prim_ref(src, dst);
546  av_assert0(src->prim != AVCOL_PRI_UNSPECIFIED);
547  av_assert0(dst->prim != AVCOL_PRI_UNSPECIFIED);
548 
549  incomplete |= infer_trc_ref(dst, src);
550  incomplete |= infer_trc_ref(src, dst);
551  av_assert0(src->trc != AVCOL_TRC_UNSPECIFIED);
552  av_assert0(dst->trc != AVCOL_TRC_UNSPECIFIED);
553 
554  return incomplete;
555 }
556 
557 int sws_test_format(enum AVPixelFormat format, int output)
558 {
559  return output ? sws_isSupportedOutput(format) : sws_isSupportedInput(format);
560 }
561 
562 int sws_test_hw_format(enum AVPixelFormat format)
563 {
564  switch (format) {
565  case AV_PIX_FMT_NONE: return 1;
566 #if CONFIG_VULKAN
567  case AV_PIX_FMT_VULKAN: return 1;
568 #endif
569  default: return 0;
570  }
571 }
572 
573 int sws_test_colorspace(enum AVColorSpace csp, int output)
574 {
575  switch (csp) {
576  case AVCOL_SPC_UNSPECIFIED:
577  case AVCOL_SPC_RGB:
578  case AVCOL_SPC_BT709:
579  case AVCOL_SPC_BT470BG:
580  case AVCOL_SPC_SMPTE170M:
581  case AVCOL_SPC_FCC:
582  case AVCOL_SPC_SMPTE240M:
583  case AVCOL_SPC_BT2020_NCL:
584  return 1;
585  default:
586  return 0;
587  }
588 }
589 
590 int sws_test_primaries(enum AVColorPrimaries prim, int output)
591 {
592  return ((prim > AVCOL_PRI_RESERVED0 && prim < AVCOL_PRI_NB) ||
593  (prim >= AVCOL_PRI_EXT_BASE && prim < AVCOL_PRI_EXT_NB)) &&
594  prim != AVCOL_PRI_RESERVED;
595 }
596 
597 int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output)
598 {
599  av_csp_eotf_function eotf = output ? av_csp_itu_eotf_inv(trc)
600  : av_csp_itu_eotf(trc);
601  return trc == AVCOL_TRC_UNSPECIFIED || eotf != NULL;
602 }
603 
604 static int test_range(enum AVColorRange range)
605 {
606  return (unsigned)range < AVCOL_RANGE_NB;
607 }
608 
609 static int test_loc(enum AVChromaLocation loc)
610 {
611  return (unsigned)loc < AVCHROMA_LOC_NB;
612 }
613 
614 int ff_test_fmt(const SwsFormat *fmt, int output)
615 {
616  return fmt->width > 0 && fmt->height > 0 &&
617  sws_test_format (fmt->format, output) &&
618  sws_test_colorspace(fmt->csp, output) &&
619  sws_test_primaries (fmt->color.prim, output) &&
620  sws_test_transfer (fmt->color.trc, output) &&
621  sws_test_hw_format (fmt->hw_format) &&
622  test_range (fmt->range) &&
623  test_loc (fmt->loc);
624 }
625 
626 int sws_test_frame(const AVFrame *frame, int output)
627 {
628  for (int field = 0; field < 2; field++) {
629  const SwsFormat fmt = ff_fmt_from_frame(frame, field);
630  if (!ff_test_fmt(&fmt, output))
631  return 0;
632  if (!fmt.interlaced)
633  break;
634  }
635 
636  return 1;
637 }
638 
639 int sws_is_noop(const AVFrame *dst, const AVFrame *src)
640 {
641  for (int field = 0; field < 2; field++) {
642  SwsFormat dst_fmt = ff_fmt_from_frame(dst, field);
643  SwsFormat src_fmt = ff_fmt_from_frame(src, field);
644  if (!ff_fmt_equal(&dst_fmt, &src_fmt))
645  return 0;
646  if (!dst_fmt.interlaced)
647  break;
648  }
649 
650  return 1;
651 }
652 
653 void ff_sws_frame_from_avframe(SwsFrame *dst, const AVFrame *src)
654 {
655  dst->format = src->format;
656  dst->width = src->width;
657  dst->height = src->height;
658  dst->avframe = src;
659  for (int i = 0; i < FF_ARRAY_ELEMS(dst->data); i++) {
660  dst->data[i] = src->data[i];
661  dst->linesize[i] = src->linesize[i];
662  }
663 }
664 
665 #if CONFIG_UNSTABLE
666 
667 /* Returns the type suitable for a pixel after fully decoding/unpacking it */
668 static SwsPixelType fmt_pixel_type(enum AVPixelFormat fmt)
669 {
670  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
671  const int bits = FFALIGN(desc->comp[0].depth, 8);
672  if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
673  switch (bits) {
674  case 32: return SWS_PIXEL_F32;
675  /* TODO: no support for 16-bit float yet */
676  }
677  } else {
678  switch (bits) {
679  case 8: return SWS_PIXEL_U8;
680  case 16: return SWS_PIXEL_U16;
681  /* TODO: AVRational cannot represent UINT32_MAX */
682  }
683  }
684 
685  return SWS_PIXEL_NONE;
686 }
687 
688 /* A regular format is defined as any format that contains only a single
689  * component per elementary data type (i.e. no sub-byte pack/unpack needed),
690  * and whose components map 1:1 onto elementary data units */
691 static int is_regular_fmt(enum AVPixelFormat fmt)
692 {
693  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
694  if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_BAYER))
695  return 0; /* no 1:1 correspondence between components and data units */
696  if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM))
697  return 0; /* bitstream formats are packed by definition */
698  if ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) || desc->nb_components == 1)
699  return 1; /* planar formats are regular by definition */
700 
701  const int step = desc->comp[0].step;
702  int total_bits = 0;
703 
704  for (int i = 0; i < desc->nb_components; i++) {
705  if (desc->comp[i].shift || desc->comp[i].step != step)
706  return 0; /* irregular/packed format */
707  total_bits += desc->comp[i].depth;
708  }
709 
710  /* Exclude formats with missing components like RGB0, 0RGB, etc. */
711  return total_bits == step * 8;
712 }
713 
714 typedef struct FmtInfo {
715  SwsReadWriteOp rw;
716  SwsSwizzleOp swizzle;
717  SwsPackOp pack;
718  int shift;
719 } FmtInfo;
720 
721 #define BITSTREAM_FMT(SWIZ, FRAC, PACKED, ...) (FmtInfo) { \
722  .rw = { .elems = 1, .frac = FRAC, .packed = PACKED }, \
723  .swizzle = SWIZ, \
724  __VA_ARGS__ \
725 }
726 
727 #define SUBPACKED_FMT(SWIZ, ...) (FmtInfo) { \
728  .rw = { .elems = 1, .packed = true }, \
729  .swizzle = SWIZ, \
730  .pack.pattern = {__VA_ARGS__}, \
731 }
732 
733 #define PACKED_FMT(SWIZ, N, ...) (FmtInfo) { \
734  .rw = { .elems = N, .packed = (N) > 1 }, \
735  .swizzle = SWIZ, \
736  __VA_ARGS__ \
737 }
738 
739 #define RGBA SWS_SWIZZLE(0, 1, 2, 3)
740 #define BGRA SWS_SWIZZLE(2, 1, 0, 3)
741 #define ARGB SWS_SWIZZLE(3, 0, 1, 2)
742 #define ABGR SWS_SWIZZLE(3, 2, 1, 0)
743 #define AVYU SWS_SWIZZLE(3, 2, 0, 1)
744 #define VYUA SWS_SWIZZLE(2, 0, 1, 3)
745 #define UYVA SWS_SWIZZLE(1, 0, 2, 3)
746 #define VUYA BGRA
747 
748 static FmtInfo fmt_info_irregular(enum AVPixelFormat fmt)
749 {
750  switch (fmt) {
751  /* Bitstream formats */
752  case AV_PIX_FMT_MONOWHITE:
753  case AV_PIX_FMT_MONOBLACK:
754  return BITSTREAM_FMT(RGBA, 3, false);
755  case AV_PIX_FMT_RGB4: return BITSTREAM_FMT(RGBA, 1, true, .pack = {{ 1, 2, 1 }});
756  case AV_PIX_FMT_BGR4: return BITSTREAM_FMT(BGRA, 1, true, .pack = {{ 1, 2, 1 }});
757 
758  /* Sub-packed 8-bit aligned formats */
759  case AV_PIX_FMT_RGB4_BYTE: return SUBPACKED_FMT(RGBA, 1, 2, 1);
760  case AV_PIX_FMT_BGR4_BYTE: return SUBPACKED_FMT(BGRA, 1, 2, 1);
761  case AV_PIX_FMT_RGB8: return SUBPACKED_FMT(RGBA, 3, 3, 2);
762  case AV_PIX_FMT_BGR8: return SUBPACKED_FMT(BGRA, 2, 3, 3);
763 
764  /* Sub-packed 16-bit aligned formats */
765  case AV_PIX_FMT_RGB565LE:
766  case AV_PIX_FMT_RGB565BE:
767  return SUBPACKED_FMT(RGBA, 5, 6, 5);
768  case AV_PIX_FMT_BGR565LE:
769  case AV_PIX_FMT_BGR565BE:
770  return SUBPACKED_FMT(BGRA, 5, 6, 5);
771  case AV_PIX_FMT_RGB555LE:
772  case AV_PIX_FMT_RGB555BE:
773  return SUBPACKED_FMT(RGBA, 5, 5, 5);
774  case AV_PIX_FMT_BGR555LE:
775  case AV_PIX_FMT_BGR555BE:
776  return SUBPACKED_FMT(BGRA, 5, 5, 5);
777  case AV_PIX_FMT_RGB444LE:
778  case AV_PIX_FMT_RGB444BE:
779  return SUBPACKED_FMT(RGBA, 4, 4, 4);
780  case AV_PIX_FMT_BGR444LE:
781  case AV_PIX_FMT_BGR444BE:
782  return SUBPACKED_FMT(BGRA, 4, 4, 4);
783 
784  /* Sub-packed 32-bit aligned formats */
785  case AV_PIX_FMT_X2RGB10LE:
786  case AV_PIX_FMT_X2RGB10BE:
787  return SUBPACKED_FMT(ARGB, 2, 10, 10, 10);
788  case AV_PIX_FMT_X2BGR10LE:
789  case AV_PIX_FMT_X2BGR10BE:
790  return SUBPACKED_FMT(ABGR, 2, 10, 10, 10);
791  case AV_PIX_FMT_XV30LE:
792  case AV_PIX_FMT_XV30BE:
793  return SUBPACKED_FMT(AVYU, 2, 10, 10, 10);
794  case AV_PIX_FMT_V30XLE:
795  case AV_PIX_FMT_V30XBE:
796  return SUBPACKED_FMT(VYUA, 10, 10, 10, 2);
797 
798  /* 3-component formats with extra padding */
799  case AV_PIX_FMT_RGB0: return PACKED_FMT(RGBA, 4);
800  case AV_PIX_FMT_BGR0: return PACKED_FMT(BGRA, 4);
801  case AV_PIX_FMT_0RGB: return PACKED_FMT(ARGB, 4);
802  case AV_PIX_FMT_0BGR: return PACKED_FMT(ABGR, 4);
803  case AV_PIX_FMT_VUYX: return PACKED_FMT(VUYA, 4);
804  case AV_PIX_FMT_XV36LE:
805  case AV_PIX_FMT_XV36BE:
806  return PACKED_FMT(UYVA, 4, .shift = 4);
807  case AV_PIX_FMT_XV48LE:
808  case AV_PIX_FMT_XV48BE:
809  return PACKED_FMT(UYVA, 4);
810  }
811 
812  return (FmtInfo) {0};
813 }
814 
815 struct comp {
816  int index;
817  int plane;
818  int offset;
819 };
820 
821 /* Compare by (plane, offset) */
822 static int cmp_comp(const void *a, const void *b) {
823  const struct comp *ca = a;
824  const struct comp *cb = b;
825  if (ca->plane != cb->plane)
826  return ca->plane - cb->plane;
827  return ca->offset - cb->offset;
828 }
829 
830 static int fmt_analyze_regular(const AVPixFmtDescriptor *desc, SwsReadWriteOp *rw_op,
831  SwsSwizzleOp *swizzle, SwsShiftOp *shift)
832 {
833  if (desc->nb_components == 2) {
834  /* YA formats */
835  *swizzle = SWS_SWIZZLE(0, 3, 1, 2);
836  } else {
837  /* Sort by increasing component order */
838  struct comp sorted[4] = { {0}, {1}, {2}, {3} };
839  for (int i = 0; i < desc->nb_components; i++) {
840  sorted[i].plane = desc->comp[i].plane;
841  sorted[i].offset = desc->comp[i].offset;
842  }
843 
844  qsort(sorted, desc->nb_components, sizeof(struct comp), cmp_comp);
845 
846  SwsSwizzleOp swiz = SWS_SWIZZLE(0, 1, 2, 3);
847  for (int i = 0; i < desc->nb_components; i++)
848  swiz.in[i] = sorted[i].index;
849  *swizzle = swiz;
850  }
851 
852  *shift = (SwsShiftOp) { desc->comp[0].shift };
853  *rw_op = (SwsReadWriteOp) {
854  .elems = desc->nb_components,
855  .packed = desc->nb_components > 1 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR),
856  };
857  return 0;
858 }
859 
860 static int fmt_analyze(enum AVPixelFormat fmt, SwsReadWriteOp *rw_op,
861  SwsPackOp *pack_op, SwsSwizzleOp *swizzle,
862  SwsShiftOp *shift, SwsPixelType *pixel_type,
863  SwsPixelType *raw_type)
864 {
865  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
866  if (!desc)
867  return AVERROR(EINVAL);
868 
869  /* No support for subsampled formats at the moment */
870  if (desc->log2_chroma_w || desc->log2_chroma_h)
871  return AVERROR(ENOTSUP);
872 
873  /* No support for semi-planar formats at the moment */
874  if (desc->flags & AV_PIX_FMT_FLAG_PLANAR &&
875  av_pix_fmt_count_planes(fmt) < desc->nb_components)
876  return AVERROR(ENOTSUP);
877 
878  *pixel_type = *raw_type = fmt_pixel_type(fmt);
879  if (!*pixel_type)
880  return AVERROR(ENOTSUP);
881 
882  if (is_regular_fmt(fmt)) {
883  *pack_op = (SwsPackOp) {0};
884  return fmt_analyze_regular(desc, rw_op, swizzle, shift);
885  }
886 
887  FmtInfo info = fmt_info_irregular(fmt);
888  if (!info.rw.elems)
889  return AVERROR(ENOTSUP);
890 
891  *rw_op = info.rw;
892  *pack_op = info.pack;
893  *swizzle = info.swizzle;
894  *shift = (SwsShiftOp) { info.shift };
895 
896  if (info.pack.pattern[0]) {
897  const int sum = info.pack.pattern[0] + info.pack.pattern[1] +
898  info.pack.pattern[2] + info.pack.pattern[3];
899  if (sum > 16)
900  *raw_type = SWS_PIXEL_U32;
901  else if (sum > 8)
902  *raw_type = SWS_PIXEL_U16;
903  else
904  *raw_type = SWS_PIXEL_U8;
905  }
906 
907  return 0;
908 }
909 
910 static SwsSwizzleOp swizzle_inv(SwsSwizzleOp swiz) {
911  /* Input[x] =: Output[swizzle.x] */
912  unsigned out[4];
913  out[swiz.x] = 0;
914  out[swiz.y] = 1;
915  out[swiz.z] = 2;
916  out[swiz.w] = 3;
917  return (SwsSwizzleOp) {{ .x = out[0], out[1], out[2], out[3] }};
918 }
919 
920 /**
921  * This initializes all absent components explicitly to zero. There is no
922  * need to worry about the correct neutral value as fmt_decode() will
923  * implicitly ignore and overwrite absent components in any case. This function
924  * is just to ensure that we don't operate on undefined memory. In most cases,
925  * it will end up getting pushed towards the output or optimized away entirely
926  * by the optimization pass.
927  */
928 static SwsClearOp fmt_clear(enum AVPixelFormat fmt)
929 {
930  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
931  const bool has_chroma = desc->nb_components >= 3;
932  const bool has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA;
933 
934  SwsClearOp c = {0};
935  if (!has_chroma) {
936  c.mask |= SWS_COMP(1) | SWS_COMP(2);
937  c.value[1] = c.value[2] = Q0;
938  }
939 
940  if (!has_alpha) {
941  c.mask |= SWS_COMP(3);
942  c.value[3] = Q0;
943  }
944 
945  return c;
946 }
947 
948 #if HAVE_BIGENDIAN
949 # define NATIVE_ENDIAN_FLAG AV_PIX_FMT_FLAG_BE
950 #else
951 # define NATIVE_ENDIAN_FLAG 0
952 #endif
953 
954 int ff_sws_decode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
955 {
956  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
957  SwsPixelType pixel_type, raw_type;
958  SwsReadWriteOp rw_op;
959  SwsSwizzleOp swizzle;
960  SwsPackOp unpack;
961  SwsComps *comps = &ops->comps_src;
962  SwsShiftOp shift;
963 
964  RET(fmt_analyze(fmt, &rw_op, &unpack, &swizzle, &shift,
965  &pixel_type, &raw_type));
966 
967  swizzle = swizzle_inv(swizzle);
968 
969  /* Set baseline pixel content flags */
970  const int integer = ff_sws_pixel_type_is_int(raw_type);
971  const int swapped = ff_sws_pixel_type_size(raw_type) > 1 &&
972  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG;
973  for (int i = 0; i < rw_op.elems; i++) {
974  comps->flags[i] = (integer ? SWS_COMP_EXACT : 0) |
975  (swapped ? SWS_COMP_SWAPPED : 0);
976  }
977 
978  /* Generate value range information for simple unpacked formats */
979  if (integer && !unpack.pattern[0]) {
980  /* YA formats have desc->comp[] in the order {Y, A} instead of the
981  * canonical order {Y, U, V, A} */
982  const int is_ya = desc->nb_components == 2;
983  for (int c = 0; c < desc->nb_components; c++) {
984  const int bits = desc->comp[c].depth + shift.amount;
985  const int idx = swizzle.in[is_ya ? 3 * c : c];
986  comps->min[idx] = Q0;
987  if (bits < 32) /* FIXME: AVRational is limited to INT_MAX */
988  comps->max[idx] = Q((1ULL << bits) - 1);
989  }
990  }
991 
992  /* TODO: handle subsampled or semipacked input formats */
993  RET(ff_sws_op_list_append(ops, &(SwsOp) {
994  .op = SWS_OP_READ,
995  .type = raw_type,
996  .rw = rw_op,
997  }));
998 
999  if (swapped) {
1000  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1001  .op = SWS_OP_SWAP_BYTES,
1002  .type = raw_type,
1003  }));
1004  }
1005 
1006  if (unpack.pattern[0]) {
1007  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1008  .op = SWS_OP_UNPACK,
1009  .type = raw_type,
1010  .pack = unpack,
1011  }));
1012 
1013  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1014  .op = SWS_OP_CONVERT,
1015  .type = raw_type,
1016  .convert.to = pixel_type,
1017  }));
1018  }
1019 
1020  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1021  .op = SWS_OP_SWIZZLE,
1022  .type = pixel_type,
1023  .swizzle = swizzle,
1024  }));
1025 
1026  if (shift.amount) {
1027  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1028  .op = SWS_OP_RSHIFT,
1029  .type = pixel_type,
1030  .shift = shift,
1031  }));
1032  }
1033 
1034  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1035  .op = SWS_OP_CLEAR,
1036  .type = pixel_type,
1037  .clear = fmt_clear(fmt),
1038  }));
1039 
1040  return 0;
1041 }
1042 
1043 int ff_sws_encode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
1044 {
1045  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
1046  SwsPixelType pixel_type, raw_type;
1047  SwsReadWriteOp rw_op;
1048  SwsSwizzleOp swizzle;
1049  SwsPackOp pack;
1050  SwsShiftOp shift;
1051 
1052  RET(fmt_analyze(fmt, &rw_op, &pack, &swizzle, &shift,
1053  &pixel_type, &raw_type));
1054 
1055  if (shift.amount) {
1056  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1057  .op = SWS_OP_LSHIFT,
1058  .type = pixel_type,
1059  .shift = shift,
1060  }));
1061  }
1062 
1063  if (rw_op.elems > desc->nb_components) {
1064  /* Format writes unused alpha channel, clear it explicitly for sanity */
1065  av_assert1(!(desc->flags & AV_PIX_FMT_FLAG_ALPHA));
1066  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1067  .op = SWS_OP_CLEAR,
1068  .type = pixel_type,
1069  .clear.mask = SWS_COMP(3),
1070  .clear.value[3] = Q0,
1071  }));
1072  }
1073 
1074  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1075  .op = SWS_OP_SWIZZLE,
1076  .type = pixel_type,
1077  .swizzle = swizzle,
1078  }));
1079 
1080  if (pack.pattern[0]) {
1081  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1082  .op = SWS_OP_CONVERT,
1083  .type = pixel_type,
1084  .convert.to = raw_type,
1085  }));
1086 
1087  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1088  .op = SWS_OP_PACK,
1089  .type = raw_type,
1090  .pack = pack,
1091  }));
1092  }
1093 
1094  if (ff_sws_pixel_type_size(raw_type) > 1 &&
1095  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG) {
1096  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1097  .op = SWS_OP_SWAP_BYTES,
1098  .type = raw_type,
1099  }));
1100  }
1101 
1102  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1103  .op = SWS_OP_WRITE,
1104  .type = raw_type,
1105  .rw = rw_op,
1106  }));
1107 
1108  return 0;
1109 }
1110 
1111 static inline AVRational av_neg_q(AVRational x)
1112 {
1113  return (AVRational) { -x.num, x.den };
1114 }
1115 
1116 static SwsLinearOp fmt_encode_range(const SwsFormat *fmt, bool *incomplete)
1117 {
1118  SwsLinearOp c = { .m = {
1119  { Q1, Q0, Q0, Q0, Q0 },
1120  { Q0, Q1, Q0, Q0, Q0 },
1121  { Q0, Q0, Q1, Q0, Q0 },
1122  { Q0, Q0, Q0, Q1, Q0 },
1123  }};
1124 
1125  const int depth0 = fmt->desc->comp[0].depth;
1126  const int depth1 = fmt->desc->comp[1].depth;
1127  const int depth2 = fmt->desc->comp[2].depth;
1128  const int depth3 = fmt->desc->comp[3].depth;
1129 
1130  if (fmt->desc->flags & AV_PIX_FMT_FLAG_FLOAT)
1131  return c; /* floats are directly output as-is */
1132 
1133  av_assert0(depth0 < 32 && depth1 < 32 && depth2 < 32 && depth3 < 32);
1134  if (fmt->csp == AVCOL_SPC_RGB || (fmt->desc->flags & AV_PIX_FMT_FLAG_XYZ)) {
1135  c.m[0][0] = Q((1 << depth0) - 1);
1136  c.m[1][1] = Q((1 << depth1) - 1);
1137  c.m[2][2] = Q((1 << depth2) - 1);
1138  } else if (fmt->range == AVCOL_RANGE_JPEG) {
1139  /* Full range YUV */
1140  c.m[0][0] = Q((1 << depth0) - 1);
1141  if (fmt->desc->nb_components >= 3) {
1142  /* This follows the ITU-R convention, which is slightly different
1143  * from the JFIF convention. */
1144  c.m[1][1] = Q((1 << depth1) - 1);
1145  c.m[2][2] = Q((1 << depth2) - 1);
1146  c.m[1][4] = Q(1 << (depth1 - 1));
1147  c.m[2][4] = Q(1 << (depth2 - 1));
1148  }
1149  } else {
1150  /* Limited range YUV */
1151  if (fmt->range == AVCOL_RANGE_UNSPECIFIED)
1152  *incomplete = true;
1153  c.m[0][0] = Q(219 << (depth0 - 8));
1154  c.m[0][4] = Q( 16 << (depth0 - 8));
1155  if (fmt->desc->nb_components >= 3) {
1156  c.m[1][1] = Q(224 << (depth1 - 8));
1157  c.m[2][2] = Q(224 << (depth2 - 8));
1158  c.m[1][4] = Q(128 << (depth1 - 8));
1159  c.m[2][4] = Q(128 << (depth2 - 8));
1160  }
1161  }
1162 
1163  if (fmt->desc->flags & AV_PIX_FMT_FLAG_ALPHA) {
1164  const bool is_ya = fmt->desc->nb_components == 2;
1165  c.m[3][3] = Q((1 << (is_ya ? depth1 : depth3)) - 1);
1166  }
1167 
1168  if (fmt->format == AV_PIX_FMT_MONOWHITE) {
1169  /* This format is inverted, 0 = white, 1 = black */
1170  c.m[0][4] = av_add_q(c.m[0][4], c.m[0][0]);
1171  c.m[0][0] = av_neg_q(c.m[0][0]);
1172  }
1173 
1174  c.mask = ff_sws_linear_mask(c);
1175  return c;
1176 }
1177 
1178 static SwsLinearOp fmt_decode_range(const SwsFormat *fmt, bool *incomplete)
1179 {
1180  SwsLinearOp c = fmt_encode_range(fmt, incomplete);
1181 
1182  /* Invert main diagonal + offset: x = s * y + k ==> y = (x - k) / s */
1183  for (int i = 0; i < 4; i++) {
1184  av_assert1(c.m[i][i].num);
1185  c.m[i][i] = av_inv_q(c.m[i][i]);
1186  c.m[i][4] = av_mul_q(c.m[i][4], av_neg_q(c.m[i][i]));
1187  }
1188 
1189  /* Explicitly initialize alpha for sanity */
1190  if (!(fmt->desc->flags & AV_PIX_FMT_FLAG_ALPHA))
1191  c.m[3][4] = Q1;
1192 
1193  c.mask = ff_sws_linear_mask(c);
1194  return c;
1195 }
1196 
1197 static AVRational *generate_bayer_matrix(const int size_log2)
1198 {
1199  const int size = 1 << size_log2;
1200  const int num_entries = size * size;
1201  AVRational *m = av_refstruct_allocz(sizeof(*m) * num_entries);
1202  av_assert1(size_log2 < 16);
1203  if (!m)
1204  return NULL;
1205 
1206  /* Start with a 1x1 matrix */
1207  m[0] = Q0;
1208 
1209  /* Generate three copies of the current, appropriately scaled and offset */
1210  for (int sz = 1; sz < size; sz <<= 1) {
1211  const int den = 4 * sz * sz;
1212  for (int y = 0; y < sz; y++) {
1213  for (int x = 0; x < sz; x++) {
1214  const AVRational cur = m[y * size + x];
1215  m[(y + sz) * size + x + sz] = av_add_q(cur, av_make_q(1, den));
1216  m[(y ) * size + x + sz] = av_add_q(cur, av_make_q(2, den));
1217  m[(y + sz) * size + x ] = av_add_q(cur, av_make_q(3, den));
1218  }
1219  }
1220  }
1221 
1222  /**
1223  * To correctly round, we need to evenly distribute the result on [0, 1),
1224  * giving an average value of 1/2.
1225  *
1226  * After the above construction, we have a matrix with average value:
1227  * [ 0/N + 1/N + 2/N + ... (N-1)/N ] / N = (N-1)/(2N)
1228  * where N = size * size is the total number of entries.
1229  *
1230  * To make the average value equal to 1/2 = N/(2N), add a bias of 1/(2N).
1231  */
1232  for (int i = 0; i < num_entries; i++)
1233  m[i] = av_add_q(m[i], av_make_q(1, 2 * num_entries));
1234 
1235  return m;
1236 }
1237 
1238 static bool trc_is_hdr(enum AVColorTransferCharacteristic trc)
1239 {
1240  static_assert(AVCOL_TRC_NB == 19, "Update this list when adding TRCs");
1241  static_assert(AVCOL_TRC_EXT_NB == 257, "Update this list when adding TRCs");
1242  switch (trc) {
1243  case AVCOL_TRC_LOG:
1244  case AVCOL_TRC_LOG_SQRT:
1245  case AVCOL_TRC_V_LOG:
1246  case AVCOL_TRC_SMPTEST2084:
1247  case AVCOL_TRC_ARIB_STD_B67:
1248  return true;
1249  default:
1250  return false;
1251  }
1252 }
1253 
1254 static int fmt_dither(SwsContext *ctx, SwsOpList *ops,
1255  const SwsPixelType type,
1256  const SwsFormat *src, const SwsFormat *dst)
1257 {
1258  SwsDither mode = ctx->dither;
1259  SwsDitherOp dither;
1260  const int bpc = dst->desc->comp[0].depth;
1261 
1262  if (mode == SWS_DITHER_AUTO) {
1263  /* Visual threshold of perception: 12 bits for SDR, 14 bits for HDR */
1264  const int jnd_bits = trc_is_hdr(dst->color.trc) ? 14 : 12;
1265  mode = bpc >= jnd_bits ? SWS_DITHER_NONE : SWS_DITHER_BAYER;
1266  }
1267 
1268  switch (mode) {
1269  case SWS_DITHER_NONE:
1270  if (ctx->flags & SWS_ACCURATE_RND) {
1271  /* Add constant 0.5 for correct rounding */
1272  AVRational *bias = av_refstruct_allocz(sizeof(*bias));
1273  if (!bias)
1274  return AVERROR(ENOMEM);
1275  *bias = (AVRational) {1, 2};
1276  return ff_sws_op_list_append(ops, &(SwsOp) {
1277  .op = SWS_OP_DITHER,
1278  .type = type,
1279  .dither.matrix = bias,
1280  .dither.min = *bias,
1281  .dither.max = *bias,
1282  });
1283  } else {
1284  return 0; /* No-op */
1285  }
1286  case SWS_DITHER_BAYER:
1287  /* Hardcode 16x16 matrix for now; in theory we could adjust this
1288  * based on the expected level of precision in the output, since lower
1289  * bit depth outputs can suffice with smaller dither matrices; however
1290  * in practice we probably want to use error diffusion for such low bit
1291  * depths anyway */
1292  dither.size_log2 = 4;
1293  dither.matrix = generate_bayer_matrix(dither.size_log2);
1294  if (!dither.matrix)
1295  return AVERROR(ENOMEM);
1296 
1297  const int size = 1 << dither.size_log2;
1298  dither.min = dither.max = dither.matrix[0];
1299  for (int i = 1; i < size * size; i++) {
1300  if (av_cmp_q(dither.min, dither.matrix[i]) > 0)
1301  dither.min = dither.matrix[i];
1302  if (av_cmp_q(dither.matrix[i], dither.max) > 0)
1303  dither.max = dither.matrix[i];
1304  }
1305 
1306  /* Brute-forced offsets; minimizes quantization error across a 16x16
1307  * bayer dither pattern for standard RGBA and YUVA pixel formats */
1308  const int offsets_16x16[4] = {0, 3, 2, 5};
1309  for (int i = 0; i < 4; i++) {
1310  av_assert0(offsets_16x16[i] <= INT8_MAX);
1311  dither.y_offset[i] = offsets_16x16[i];
1312  }
1313 
1314  if (src->desc->nb_components < 3 && bpc >= 8) {
1315  /**
1316  * For high-bit-depth sources without chroma, use same matrix
1317  * offset for all color channels. This prevents introducing color
1318  * noise in grayscale images; and also allows optimizing the dither
1319  * operation. Skipped for low bit depth (<8 bpc) as the loss in
1320  * PSNR, from the inability to diffuse error among all three
1321  * channels, can be substantial.
1322  *
1323  * This shifts: { X, Y, Z, W } -> { X, X, X, Y }
1324  */
1325  dither.y_offset[3] = dither.y_offset[1];
1326  dither.y_offset[1] = dither.y_offset[2] = dither.y_offset[0];
1327  }
1328 
1329  return ff_sws_op_list_append(ops, &(SwsOp) {
1330  .op = SWS_OP_DITHER,
1331  .type = type,
1332  .dither = dither,
1333  });
1334  case SWS_DITHER_ED:
1335  case SWS_DITHER_A_DITHER:
1336  case SWS_DITHER_X_DITHER:
1337  return AVERROR(ENOTSUP);
1338 
1339  case SWS_DITHER_NB:
1340  break;
1341  }
1342 
1343  av_unreachable("Invalid dither mode");
1344  return AVERROR(EINVAL);
1345 }
1346 
1347 static inline SwsLinearOp
1348 linear_mat3(const AVRational m00, const AVRational m01, const AVRational m02,
1349  const AVRational m10, const AVRational m11, const AVRational m12,
1350  const AVRational m20, const AVRational m21, const AVRational m22)
1351 {
1352  SwsLinearOp c = {{
1353  { m00, m01, m02, Q0, Q0 },
1354  { m10, m11, m12, Q0, Q0 },
1355  { m20, m21, m22, Q0, Q0 },
1356  { Q0, Q0, Q0, Q1, Q0 },
1357  }};
1358 
1359  c.mask = ff_sws_linear_mask(c);
1360  return c;
1361 }
1362 
1363 int ff_sws_decode_colors(SwsContext *ctx, SwsPixelType type,
1364  SwsOpList *ops, const SwsFormat *fmt, bool *incomplete)
1365 {
1366  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(fmt->csp);
1367  const SwsPixelType pixel_type = fmt_pixel_type(fmt->format);
1368  if (!pixel_type)
1369  return AVERROR(ENOTSUP);
1370 
1371  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1372  .op = SWS_OP_CONVERT,
1373  .type = pixel_type,
1374  .convert.to = type,
1375  }));
1376 
1377  /* Decode pixel format into standardized range */
1378  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1379  .type = type,
1380  .op = SWS_OP_LINEAR,
1381  .lin = fmt_decode_range(fmt, incomplete),
1382  }));
1383 
1384  /* Final step, decode colorspace */
1385  switch (fmt->csp) {
1386  case AVCOL_SPC_RGB:
1387  return 0;
1388  case AVCOL_SPC_UNSPECIFIED:
1389  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1390  *incomplete = true;
1391  av_fallthrough;
1392  case AVCOL_SPC_FCC:
1393  case AVCOL_SPC_BT470BG:
1394  case AVCOL_SPC_SMPTE170M:
1395  case AVCOL_SPC_BT709:
1396  case AVCOL_SPC_SMPTE240M:
1397  case AVCOL_SPC_BT2020_NCL: {
1398  AVRational crg = av_sub_q(Q0, av_div_q(c->cr, c->cg));
1399  AVRational cbg = av_sub_q(Q0, av_div_q(c->cb, c->cg));
1400  AVRational m02 = av_mul_q(Q(2), av_sub_q(Q1, c->cr));
1401  AVRational m21 = av_mul_q(Q(2), av_sub_q(Q1, c->cb));
1402  AVRational m11 = av_mul_q(cbg, m21);
1403  AVRational m12 = av_mul_q(crg, m02);
1404 
1405  return ff_sws_op_list_append(ops, &(SwsOp) {
1406  .type = type,
1407  .op = SWS_OP_LINEAR,
1408  .lin = linear_mat3(
1409  Q1, Q0, m02,
1410  Q1, m11, m12,
1411  Q1, m21, Q0
1412  ),
1413  });
1414  }
1415 
1416  case AVCOL_SPC_YCGCO:
1417  return ff_sws_op_list_append(ops, &(SwsOp) {
1418  .type = type,
1419  .op = SWS_OP_LINEAR,
1420  .lin = linear_mat3(
1421  Q1, Q(-1), Q( 1),
1422  Q1, Q( 1), Q( 0),
1423  Q1, Q(-1), Q(-1)
1424  ),
1425  });
1426 
1427  case AVCOL_SPC_BT2020_CL:
1428  case AVCOL_SPC_SMPTE2085:
1429  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1430  case AVCOL_SPC_CHROMA_DERIVED_CL:
1431  case AVCOL_SPC_ICTCP:
1432  case AVCOL_SPC_IPT_C2:
1433  case AVCOL_SPC_YCGCO_RE:
1434  case AVCOL_SPC_YCGCO_RO:
1435  return AVERROR(ENOTSUP);
1436 
1437  case AVCOL_SPC_RESERVED:
1438  return AVERROR(EINVAL);
1439 
1440  case AVCOL_SPC_NB:
1441  break;
1442  }
1443 
1444  av_unreachable("Corrupt AVColorSpace value?");
1445  return AVERROR(EINVAL);
1446 }
1447 
1448 int ff_sws_encode_colors(SwsContext *ctx, SwsPixelType type,
1449  SwsOpList *ops, const SwsFormat *src,
1450  const SwsFormat *dst, bool *incomplete)
1451 {
1452  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(dst->csp);
1453  const SwsPixelType pixel_type = fmt_pixel_type(dst->format);
1454  if (!pixel_type)
1455  return AVERROR(ENOTSUP);
1456 
1457  switch (dst->csp) {
1458  case AVCOL_SPC_RGB:
1459  break;
1460  case AVCOL_SPC_UNSPECIFIED:
1461  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1462  *incomplete = true;
1463  av_fallthrough;
1464  case AVCOL_SPC_FCC:
1465  case AVCOL_SPC_BT470BG:
1466  case AVCOL_SPC_SMPTE170M:
1467  case AVCOL_SPC_BT709:
1468  case AVCOL_SPC_SMPTE240M:
1469  case AVCOL_SPC_BT2020_NCL: {
1470  AVRational cb1 = av_sub_q(c->cb, Q1);
1471  AVRational cr1 = av_sub_q(c->cr, Q1);
1472  AVRational m20 = av_make_q(1,2);
1473  AVRational m10 = av_mul_q(m20, av_div_q(c->cr, cb1));
1474  AVRational m11 = av_mul_q(m20, av_div_q(c->cg, cb1));
1475  AVRational m21 = av_mul_q(m20, av_div_q(c->cg, cr1));
1476  AVRational m22 = av_mul_q(m20, av_div_q(c->cb, cr1));
1477 
1478  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1479  .type = type,
1480  .op = SWS_OP_LINEAR,
1481  .lin = linear_mat3(
1482  c->cr, c->cg, c->cb,
1483  m10, m11, m20,
1484  m20, m21, m22
1485  ),
1486  }));
1487  break;
1488  }
1489 
1490  case AVCOL_SPC_YCGCO:
1491  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1492  .type = type,
1493  .op = SWS_OP_LINEAR,
1494  .lin = linear_mat3(
1495  av_make_q( 1, 4), av_make_q(1, 2), av_make_q( 1, 4),
1496  av_make_q( 1, 2), av_make_q(0, 1), av_make_q(-1, 2),
1497  av_make_q(-1, 4), av_make_q(1, 2), av_make_q(-1, 4)
1498  ),
1499  }));
1500  break;
1501 
1502  case AVCOL_SPC_BT2020_CL:
1503  case AVCOL_SPC_SMPTE2085:
1504  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1505  case AVCOL_SPC_CHROMA_DERIVED_CL:
1506  case AVCOL_SPC_ICTCP:
1507  case AVCOL_SPC_IPT_C2:
1508  case AVCOL_SPC_YCGCO_RE:
1509  case AVCOL_SPC_YCGCO_RO:
1510  return AVERROR(ENOTSUP);
1511 
1512  case AVCOL_SPC_RESERVED:
1513  case AVCOL_SPC_NB:
1514  return AVERROR(EINVAL);
1515  }
1516 
1517  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1518  .type = type,
1519  .op = SWS_OP_LINEAR,
1520  .lin = fmt_encode_range(dst, incomplete),
1521  }));
1522 
1523  if (!(dst->desc->flags & AV_PIX_FMT_FLAG_FLOAT)) {
1524  SwsClampOp range = {0};
1525 
1526  const bool is_ya = dst->desc->nb_components == 2;
1527  for (int i = 0; i < dst->desc->nb_components; i++) {
1528  /* Clamp to legal pixel range */
1529  const int idx = i * (is_ya ? 3 : 1);
1530  range.limit[idx] = Q((1 << dst->desc->comp[i].depth) - 1);
1531  }
1532 
1533  RET(fmt_dither(ctx, ops, type, src, dst));
1534  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1535  .op = SWS_OP_MAX,
1536  .type = type,
1537  .clamp = {{ Q0, Q0, Q0, Q0 }},
1538  }));
1539 
1540  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1541  .op = SWS_OP_MIN,
1542  .type = type,
1543  .clamp = range,
1544  }));
1545  }
1546 
1547  return ff_sws_op_list_append(ops, &(SwsOp) {
1548  .type = type,
1549  .op = SWS_OP_CONVERT,
1550  .convert.to = pixel_type,
1551  });
1552 }
1553 
1554 #endif /* CONFIG_UNSTABLE */
AVCOL_PRI_RESERVED
@ AVCOL_PRI_RESERVED
Definition: pixfmt.h:640
SWS_OP_READ
@ SWS_OP_READ
Definition: ops.h:50
AVLumaCoefficients::cr
AVRational cr
Definition: csp.h:49
AVMasteringDisplayMetadata::has_primaries
int has_primaries
Flag indicating whether the display primaries (and white point) are set.
Definition: mastering_display_metadata.h:62
ff_test_fmt
int ff_test_fmt(const SwsFormat *fmt, int output)
Definition: format.c:614
AV_PIX_FMT_XYZ12LE
@ AV_PIX_FMT_XYZ12LE
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as lit...
Definition: pixfmt.h:196
SWS_PIXEL_U16
@ SWS_PIXEL_U16
Definition: ops.h:36
AV_PIX_FMT_YUV420P9LE
@ AV_PIX_FMT_YUV420P9LE
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:154
AVDynamicHDRPlus::params
AVHDRPlusColorTransformParams params[3]
The color transform parameters for every processing window.
Definition: hdr_dynamic_metadata.h:264
AV_PIX_FMT_XV30LE
@ AV_PIX_FMT_XV30LE
packed XVYU 4:4:4, 32bpp, (msb)2X 10V 10Y 10U(lsb), little-endian, variant of Y410 where alpha channe...
Definition: pixfmt.h:415
RET
#define RET(x)
Definition: format.c:40
AV_PIX_FMT_GRAY10BE
@ AV_PIX_FMT_GRAY10BE
Y , 10bpp, big-endian.
Definition: pixfmt.h:320
AVMasteringDisplayMetadata::max_luminance
AVRational max_luminance
Max luminance of mastering display (cd/m^2).
Definition: mastering_display_metadata.h:57
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
AV_PIX_FMT_BAYER_GBRG16LE
@ AV_PIX_FMT_BAYER_GBRG16LE
bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:293
SWS_OP_SWIZZLE
@ SWS_OP_SWIZZLE
Definition: ops.h:53
AV_PIX_FMT_BGR48LE
@ AV_PIX_FMT_BGR48LE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:146
SWS_DITHER_AUTO
@ SWS_DITHER_AUTO
Definition: swscale.h:81
AV_PIX_FMT_P416BE
@ AV_PIX_FMT_P416BE
interleaved chroma YUV 4:4:4, 48bpp, big-endian
Definition: pixfmt.h:398
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:140
AV_PIX_FMT_BGRA64BE
@ AV_PIX_FMT_BGRA64BE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:204
SWS_OP_LSHIFT
@ SWS_OP_LSHIFT
Definition: ops.h:58
SWS_OP_UNPACK
@ SWS_OP_UNPACK
Definition: ops.h:56
SwsClearOp
Definition: ops.h:168
AVColorTransferCharacteristic
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:666
ff_fmt_from_frame
SwsFormat ff_fmt_from_frame(const AVFrame *frame, int field)
This function also sanitizes and strips the input data, removing irrelevant fields for certain format...
Definition: format.c:349
out
static FILE * out
Definition: movenc.c:55
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:247
av_frame_get_side_data
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:659
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:79
AV_PIX_FMT_RGB444LE
@ AV_PIX_FMT_RGB444LE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:136
SwsOpList::comps_src
SwsComps comps_src
Source component metadata associated with pixel values from each corresponding component (in plane/me...
Definition: ops.h:307
AV_PIX_FMT_GBRP16BE
@ AV_PIX_FMT_GBRP16BE
planar GBR 4:4:4 48bpp, big-endian
Definition: pixfmt.h:171
AVCOL_SPC_YCGCO_RE
@ AVCOL_SPC_YCGCO_RE
YCgCo-R, even addition of bits.
Definition: pixfmt.h:718
SwsFormat::interlaced
int interlaced
Definition: format.h:79
AVColorPrimariesDesc
Struct that contains both white point location and primaries location, providing the complete descrip...
Definition: csp.h:78
AV_PIX_FMT_GBRP10BE
@ AV_PIX_FMT_GBRP10BE
planar GBR 4:4:4 30bpp, big-endian
Definition: pixfmt.h:169
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3456
SWS_OP_CLEAR
@ SWS_OP_CLEAR
Definition: ops.h:62
ff_sws_linear_mask
uint32_t ff_sws_linear_mask(const SwsLinearOp c)
Definition: ops.c:759
AV_PIX_FMT_YUV422P14LE
@ AV_PIX_FMT_YUV422P14LE
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:274
av_div_q
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
AV_PIX_FMT_YUV444P12MSBBE
@ AV_PIX_FMT_YUV444P12MSBBE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), lowest bits zero, big-endian
Definition: pixfmt.h:493
AVMasteringDisplayMetadata::display_primaries
AVRational display_primaries[3][2]
CIE 1931 xy chromaticity coords of color primaries (r, g, b order).
Definition: mastering_display_metadata.h:42
SwsSwizzleOp::z
uint8_t z
Definition: ops.h:157
AVMasteringDisplayMetadata::has_luminance
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
Definition: mastering_display_metadata.h:67
output
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
Definition: filter_design.txt:226
ff_sws_op_list_append
int ff_sws_op_list_append(SwsOpList *ops, SwsOp *op)
These will take over ownership of op and set it to {0}, even on failure.
Definition: ops.c:714
AV_PIX_FMT_RGBF16LE
@ AV_PIX_FMT_RGBF16LE
IEEE-754 half precision packed RGB 16:16:16, 48bpp, RGBRGB..., little-endian.
Definition: pixfmt.h:452
AV_PIX_FMT_FLAG_FLOAT
#define AV_PIX_FMT_FLAG_FLOAT
The pixel format contains IEEE-754 floating point values.
Definition: pixdesc.h:158
AVHDRPlusColorTransformParams
Color transform parameters at a processing window in a dynamic metadata for SMPTE 2094-40.
Definition: hdr_dynamic_metadata.h:59
ff_sws_decode_colors
int ff_sws_decode_colors(SwsContext *ctx, SwsPixelType type, SwsOpList *ops, const SwsFormat *fmt, bool *incomplete)
Append a set of operations for transforming decoded pixel values to/from normalized RGB in the specif...
mode
Definition: swscale.c:60
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:435
AVCOL_TRC_NB
@ AVCOL_TRC_NB
Not part of ABI.
Definition: pixfmt.h:688
SwsFormat::range
enum AVColorRange range
Definition: format.h:82
AV_PIX_FMT_YUVA444P10BE
@ AV_PIX_FMT_YUVA444P10BE
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
Definition: pixfmt.h:185
AV_PIX_FMT_RGBA64BE
@ AV_PIX_FMT_RGBA64BE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:202
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
AV_PIX_FMT_YUV440P12BE
@ AV_PIX_FMT_YUV440P12BE
planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
Definition: pixfmt.h:301
AV_PIX_FMT_GBRAPF32LE
@ AV_PIX_FMT_GBRAPF32LE
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, little-endian.
Definition: pixfmt.h:344
Q1
#define Q1
Definition: format.c:38
AV_PIX_FMT_X2BGR10BE
@ AV_PIX_FMT_X2BGR10BE
packed BGR 10:10:10, 30bpp, (msb)2X 10B 10G 10R(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:387
AVCOL_RANGE_JPEG
@ AVCOL_RANGE_JPEG
Full range content.
Definition: pixfmt.h:777
SWS_DITHER_NONE
@ SWS_DITHER_NONE
Definition: swscale.h:80
SWS_OP_DITHER
@ SWS_OP_DITHER
Definition: ops.h:70
AV_PIX_FMT_GBRPF32BE
@ AV_PIX_FMT_GBRPF32BE
IEEE-754 single precision planar GBR 4:4:4, 96bpp, big-endian.
Definition: pixfmt.h:341
av_csp_luma_coeffs_from_avcsp
const struct AVLumaCoefficients * av_csp_luma_coeffs_from_avcsp(enum AVColorSpace csp)
Retrieves the Luma coefficients necessary to construct a conversion matrix from an enum constant desc...
Definition: csp.c:58
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AV_PIX_FMT_P412BE
@ AV_PIX_FMT_P412BE
interleaved chroma YUV 4:4:4, 36bpp, data in the high bits, big-endian
Definition: pixfmt.h:429
sws_test_primaries
int sws_test_primaries(enum AVColorPrimaries prim, int output)
Test if a given set of color primaries is supported.
Definition: format.c:590
AVCOL_SPC_NB
@ AVCOL_SPC_NB
Not part of ABI.
Definition: pixfmt.h:720
b
#define b
Definition: input.c:43
AVCOL_TRC_UNSPECIFIED
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:669
AV_PIX_FMT_P010BE
@ AV_PIX_FMT_P010BE
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:308
AV_PIX_FMT_MONOWHITE
@ AV_PIX_FMT_MONOWHITE
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:82
AV_PIX_FMT_YUV420P14BE
@ AV_PIX_FMT_YUV420P14BE
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:269
integer
int integer
Definition: swresample_internal.h:37
AV_PIX_FMT_YUV420P16LE
@ AV_PIX_FMT_YUV420P16LE
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:128
AVCOL_SPC_RGB
@ AVCOL_SPC_RGB
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB), YZX and ST 428-1
Definition: pixfmt.h:701
FIELD_TOP
@ FIELD_TOP
Definition: format.h:56
AV_PIX_FMT_GBRP14BE
@ AV_PIX_FMT_GBRP14BE
planar GBR 4:4:4 42bpp, big-endian
Definition: pixfmt.h:281
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:76
AV_PIX_FMT_BGRA
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:102
AVLumaCoefficients
Struct containing luma coefficients to be used for RGB to YUV/YCoCg, or similar calculations.
Definition: csp.h:48
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:106
SWS_PIXEL_U32
@ SWS_PIXEL_U32
Definition: ops.h:37
AVColorPrimaries
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:636
AV_PIX_FMT_YUV422P9BE
@ AV_PIX_FMT_YUV422P9BE
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:163
AV_PIX_FMT_YUVA444P9BE
@ AV_PIX_FMT_YUVA444P9BE
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
Definition: pixfmt.h:179
av_sub_q
AVRational av_sub_q(AVRational b, AVRational c)
Subtract one rational from another.
Definition: rational.c:101
AV_PIX_FMT_BAYER_GRBG16BE
@ AV_PIX_FMT_BAYER_GRBG16BE
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, big-endian
Definition: pixfmt.h:296
format.h
AV_PIX_FMT_GRAY10LE
@ AV_PIX_FMT_GRAY10LE
Y , 10bpp, little-endian.
Definition: pixfmt.h:321
AV_PIX_FMT_GRAYF32LE
@ AV_PIX_FMT_GRAYF32LE
IEEE-754 single precision Y, 32bpp, little-endian.
Definition: pixfmt.h:364
AV_PIX_FMT_GBRAP14BE
@ AV_PIX_FMT_GBRAP14BE
planar GBR 4:4:4:4 56bpp, big-endian
Definition: pixfmt.h:432
AVCOL_SPC_BT2020_CL
@ AVCOL_SPC_BT2020_CL
ITU-R BT2020 constant luminance system.
Definition: pixfmt.h:712
ff_sws_pixel_type_size
int ff_sws_pixel_type_size(SwsPixelType type)
Definition: ops.c:77
sws_test_hw_format
int sws_test_hw_format(enum AVPixelFormat format)
Test if a given hardware pixel format is supported.
Definition: format.c:562
AV_PIX_FMT_VULKAN
@ AV_PIX_FMT_VULKAN
Vulkan hardware images.
Definition: pixfmt.h:379
AV_PIX_FMT_RGB555BE
@ AV_PIX_FMT_RGB555BE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:114
AV_PIX_FMT_RGBAF16LE
@ AV_PIX_FMT_RGBAF16LE
IEEE-754 half precision packed RGBA 16:16:16:16, 64bpp, RGBARGBA..., little-endian.
Definition: pixfmt.h:404
AV_PIX_FMT_AYUV64LE
@ AV_PIX_FMT_AYUV64LE
packed AYUV 4:4:4,64bpp (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
Definition: pixfmt.h:302
AV_PIX_FMT_YUV444P16LE
@ AV_PIX_FMT_YUV444P16LE
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:132
AV_PIX_FMT_BAYER_GBRG16BE
@ AV_PIX_FMT_BAYER_GBRG16BE
bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, big-endian
Definition: pixfmt.h:294
legacy_format_entries
static const LegacyFormatEntry legacy_format_entries[]
Definition: format.c:54
AV_PIX_FMT_AYUV64BE
@ AV_PIX_FMT_AYUV64BE
packed AYUV 4:4:4,64bpp (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
Definition: pixfmt.h:303
AV_PIX_FMT_GBRAP12LE
@ AV_PIX_FMT_GBRAP12LE
planar GBR 4:4:4:4 48bpp, little-endian
Definition: pixfmt.h:311
SwsPixelType
SwsPixelType
Copyright (C) 2025 Niklas Haas.
Definition: ops.h:33
AV_PIX_FMT_GRAY16BE
@ AV_PIX_FMT_GRAY16BE
Y , 16bpp, big-endian.
Definition: pixfmt.h:104
SwsColor::gamut
AVPrimaryCoefficients gamut
Definition: format.h:63
primaries
enum AVColorPrimaries primaries
Definition: mediacodec_wrapper.c:2612
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:3496
AVCOL_SPC_BT470BG
@ AVCOL_SPC_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
Definition: pixfmt.h:706
SwsComps::max
AVRational max[4]
Definition: ops.h:114
AVCOL_SPC_RESERVED
@ AVCOL_SPC_RESERVED
reserved for future use by ITU-T and ISO/IEC just like 15-255 are
Definition: pixfmt.h:704
SwsSwizzleOp::w
uint8_t w
Definition: ops.h:157
sanitize_fmt
static void sanitize_fmt(SwsFormat *fmt, const AVPixFmtDescriptor *desc)
Definition: format.c:309
SWS_PIXEL_F32
@ SWS_PIXEL_F32
Definition: ops.h:38
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:212
AV_PIX_FMT_YUV420P12LE
@ AV_PIX_FMT_YUV420P12LE
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:268
infer_prim_ref
static int infer_prim_ref(SwsColor *csp, const SwsColor *ref)
Definition: format.c:491
SwsDitherOp
Definition: ops.h:186
SwsDither
SwsDither
Definition: swscale.h:77
AV_PIX_FMT_GRAY9LE
@ AV_PIX_FMT_GRAY9LE
Y , 9bpp, little-endian.
Definition: pixfmt.h:339
AVCOL_RANGE_NB
@ AVCOL_RANGE_NB
Not part of ABI.
Definition: pixfmt.h:778
SWS_PIXEL_U8
@ SWS_PIXEL_U8
Definition: ops.h:35
SwsReadWriteOp
Definition: ops.h:117
SwsSwizzleOp
Definition: ops.h:149
ff_sws_pixel_type_is_int
bool ff_sws_pixel_type_is_int(SwsPixelType type)
Definition: ops.c:92
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
SwsColor::trc
enum AVColorTransferCharacteristic trc
Definition: format.h:62
SWS_DITHER_X_DITHER
@ SWS_DITHER_X_DITHER
Definition: swscale.h:85
AVCOL_TRC_LOG_SQRT
@ AVCOL_TRC_LOG_SQRT
"Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range)"
Definition: pixfmt.h:677
AV_PIX_FMT_YUVA444P16BE
@ AV_PIX_FMT_YUVA444P16BE
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
Definition: pixfmt.h:191
AVRational::num
int num
Numerator.
Definition: rational.h:59
AV_PIX_FMT_YUV444P10BE
@ AV_PIX_FMT_YUV444P10BE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:161
refstruct.h
AV_PIX_FMT_YUV420P10LE
@ AV_PIX_FMT_YUV420P10LE
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:156
AV_PIX_FMT_VUYA
@ AV_PIX_FMT_VUYA
packed VUYA 4:4:4:4, 32bpp (1 Cr & Cb sample per 1x1 Y & A samples), VUYAVUYA...
Definition: pixfmt.h:401
av_refstruct_allocz
static void * av_refstruct_allocz(size_t size)
Equivalent to av_refstruct_alloc_ext(size, 0, NULL, NULL)
Definition: refstruct.h:105
AV_PIX_FMT_YUV444P12LE
@ AV_PIX_FMT_YUV444P12LE
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:276
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:283
AV_PIX_FMT_YUV422P12BE
@ AV_PIX_FMT_YUV422P12BE
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:271
AV_PIX_FMT_YUV444P14LE
@ AV_PIX_FMT_YUV444P14LE
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:278
SwsFrame
Represents a view into a single field of frame data.
Definition: format.h:193
AV_PIX_FMT_BGR8
@ AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:90
avassert.h
AV_PIX_FMT_BAYER_RGGB16BE
@ AV_PIX_FMT_BAYER_RGGB16BE
bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, big-endian
Definition: pixfmt.h:292
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
SwsFormat::height
int height
Definition: format.h:78
AVCOL_PRI_RESERVED0
@ AVCOL_PRI_RESERVED0
Definition: pixfmt.h:637
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:86
AV_PIX_FMT_GBRAP16BE
@ AV_PIX_FMT_GBRAP16BE
planar GBRA 4:4:4:4 64bpp, big-endian
Definition: pixfmt.h:213
dither
static const uint16_t dither[8][8]
Definition: vf_gradfun.c:46
AV_PIX_FMT_XV30BE
@ AV_PIX_FMT_XV30BE
packed XVYU 4:4:4, 32bpp, (msb)2X 10V 10Y 10U(lsb), big-endian, variant of Y410 where alpha channel i...
Definition: pixfmt.h:414
AV_PIX_FMT_YUV444P10MSBBE
@ AV_PIX_FMT_YUV444P10MSBBE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), lowest bits zero, big-endian
Definition: pixfmt.h:491
AV_PIX_FMT_GBRP16LE
@ AV_PIX_FMT_GBRP16LE
planar GBR 4:4:4 48bpp, little-endian
Definition: pixfmt.h:172
AVCOL_PRI_NB
@ AVCOL_PRI_NB
Not part of ABI.
Definition: pixfmt.h:654
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:108
av_csp_primaries_desc_from_id
const AVColorPrimariesDesc * av_csp_primaries_desc_from_id(enum AVColorPrimaries prm)
Retrieves a complete gamut description from an enum constant describing the color primaries.
Definition: csp.c:95
AV_PIX_FMT_P416LE
@ AV_PIX_FMT_P416LE
interleaved chroma YUV 4:4:4, 48bpp, little-endian
Definition: pixfmt.h:399
AV_PIX_FMT_BAYER_RGGB16LE
@ AV_PIX_FMT_BAYER_RGGB16LE
bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:291
SWS_SWIZZLE
#define SWS_SWIZZLE(X, Y, Z, W)
Definition: ops.h:161
AV_PIX_FMT_P210LE
@ AV_PIX_FMT_P210LE
interleaved chroma YUV 4:2:2, 20bpp, data in the high bits, little-endian
Definition: pixfmt.h:390
AVFormatContext::flags
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1414
AV_PIX_FMT_BAYER_BGGR8
@ AV_PIX_FMT_BAYER_BGGR8
bayer, BGBG..(odd line), GRGR..(even line), 8-bit samples
Definition: pixfmt.h:285
SwsComps::min
AVRational min[4]
Definition: ops.h:114
AVCOL_SPC_SMPTE170M
@ AVCOL_SPC_SMPTE170M
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
Definition: pixfmt.h:707
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demux_decode.c:41
AV_PIX_FMT_NV20BE
@ AV_PIX_FMT_NV20BE
interleaved chroma YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:200
info
MIPS optimizations info
Definition: mips.txt:2
AV_PIX_FMT_P016BE
@ AV_PIX_FMT_P016BE
like NV12, with 16bpp per component, big-endian
Definition: pixfmt.h:324
LegacyFormatEntry::is_supported_in
uint8_t is_supported_in
Definition: format.c:48
bits
uint8_t bits
Definition: vp3data.h:128
SWS_DITHER_BAYER
@ SWS_DITHER_BAYER
Definition: swscale.h:82
AV_PIX_FMT_GBRP12LE
@ AV_PIX_FMT_GBRP12LE
planar GBR 4:4:4 36bpp, little-endian
Definition: pixfmt.h:280
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:42
SWS_OP_MIN
@ SWS_OP_MIN
Definition: ops.h:64
AV_PIX_FMT_YUVA420P16BE
@ AV_PIX_FMT_YUVA420P16BE
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h:187
sws_test_colorspace
int sws_test_colorspace(enum AVColorSpace csp, int output)
Test if a given color space is supported.
Definition: format.c:573
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:147
ctx
static AVFormatContext * ctx
Definition: movenc.c:49
AV_PIX_FMT_RGB4
@ AV_PIX_FMT_RGB4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:94
SWS_OP_LINEAR
@ SWS_OP_LINEAR
Definition: ops.h:69
LegacyFormatEntry::is_supported_out
uint8_t is_supported_out
Definition: format.c:49
field
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this field
Definition: writing_filters.txt:78
AVLumaCoefficients::cg
AVRational cg
Definition: csp.h:49
AV_PIX_FMT_GBRP10LE
@ AV_PIX_FMT_GBRP10LE
planar GBR 4:4:4 30bpp, little-endian
Definition: pixfmt.h:170
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:73
AVCOL_PRI_SMPTE240M
@ AVCOL_PRI_SMPTE240M
identical to above, also called "SMPTE C" even though it uses D65
Definition: pixfmt.h:645
AV_PIX_FMT_GBRAPF16LE
@ AV_PIX_FMT_GBRAPF16LE
IEEE-754 half precision planar GBRA 4:4:4:4, 64bpp, little-endian.
Definition: pixfmt.h:469
AVCOL_SPC_IPT_C2
@ AVCOL_SPC_IPT_C2
SMPTE ST 2128, IPT-C2.
Definition: pixfmt.h:717
AVCOL_PRI_UNSPECIFIED
@ AVCOL_PRI_UNSPECIFIED
Definition: pixfmt.h:639
av_fallthrough
#define av_fallthrough
Definition: attributes.h:67
AV_PIX_FMT_RGBA
@ AV_PIX_FMT_RGBA
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:100
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:87
AVCOL_SPC_CHROMA_DERIVED_CL
@ AVCOL_SPC_CHROMA_DERIVED_CL
Chromaticity-derived constant luminance system.
Definition: pixfmt.h:715
AVCOL_PRI_BT470BG
@ AVCOL_PRI_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
Definition: pixfmt.h:643
AV_PIX_FMT_YUV444P10LE
@ AV_PIX_FMT_YUV444P10LE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:162
AV_PIX_FMT_BAYER_RGGB8
@ AV_PIX_FMT_BAYER_RGGB8
bayer, RGRG..(odd line), GBGB..(even line), 8-bit samples
Definition: pixfmt.h:286
AVCOL_PRI_SMPTE170M
@ AVCOL_PRI_SMPTE170M
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:644
AV_PIX_FMT_YUVA422P10LE
@ AV_PIX_FMT_YUVA422P10LE
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:184
if
if(ret)
Definition: filter_design.txt:179
Q0
#define Q0
Definition: format.c:37
AV_PIX_FMT_GBRP10MSBLE
@ AV_PIX_FMT_GBRP10MSBLE
planar GBR 4:4:4 30bpp, lowest bits zero, little-endian
Definition: pixfmt.h:496
SWS_OP_PACK
@ SWS_OP_PACK
Definition: ops.h:57
AV_PIX_FMT_BAYER_GRBG16LE
@ AV_PIX_FMT_BAYER_GRBG16LE
bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:295
AV_PIX_FMT_YUV444P9BE
@ AV_PIX_FMT_YUV444P9BE
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:159
SwsColor::frame_peak
AVRational frame_peak
Definition: format.h:66
AV_PIX_FMT_YUV422P10BE
@ AV_PIX_FMT_YUV422P10BE
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:157
test_range
static int test_range(enum AVColorRange range)
Definition: format.c:604
AV_PIX_FMT_YUV422P16LE
@ AV_PIX_FMT_YUV422P16LE
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:130
AV_PIX_FMT_RGB565LE
@ AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:113
AVDynamicHDRPlus::application_version
uint8_t application_version
Application version in the application defining document in ST-2094 suite.
Definition: hdr_dynamic_metadata.h:253
AV_PIX_FMT_Y216LE
@ AV_PIX_FMT_Y216LE
packed YUV 4:2:2 like YUYV422, 32bpp, little-endian
Definition: pixfmt.h:461
AV_PIX_FMT_GBRAPF32BE
@ AV_PIX_FMT_GBRAPF32BE
IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, big-endian.
Definition: pixfmt.h:343
AV_PIX_FMT_GBRAP12BE
@ AV_PIX_FMT_GBRAP12BE
planar GBR 4:4:4:4 48bpp, big-endian
Definition: pixfmt.h:310
AV_PIX_FMT_P012LE
@ AV_PIX_FMT_P012LE
like NV12, with 12bpp per component, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:408
NULL
#define NULL
Definition: coverity.c:32
AVHWFramesContext::sw_format
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:213
format
New swscale design to change SwsGraph is what coordinates multiple passes These can include cascaded scaling error diffusion and so on Or we could have separate passes for the vertical and horizontal scaling In between each SwsPass lies a fully allocated image buffer Graph passes may have different levels of e g we can have a single threaded error diffusion pass following a multi threaded scaling pass SwsGraph is internally recreated whenever the image format
Definition: swscale-v2.txt:14
AV_PIX_FMT_GBRAPF16BE
@ AV_PIX_FMT_GBRAPF16BE
IEEE-754 half precision planar GBRA 4:4:4:4, 64bpp, big-endian.
Definition: pixfmt.h:468
AVPixFmtDescriptor::nb_components
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:71
bias
static int bias(int x, int c)
Definition: vqcdec.c:115
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:74
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
av_unreachable
#define av_unreachable(msg)
Asserts that are used as compiler optimization hints depending upon ASSERT_LEVEL and NBDEBUG.
Definition: avassert.h:116
sws_is_noop
int sws_is_noop(const AVFrame *dst, const AVFrame *src)
Check if a given conversion is a noop.
Definition: format.c:639
AV_PIX_FMT_P210BE
@ AV_PIX_FMT_P210BE
interleaved chroma YUV 4:2:2, 20bpp, data in the high bits, big-endian
Definition: pixfmt.h:389
AV_PIX_FMT_RGB48LE
@ AV_PIX_FMT_RGB48LE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:110
AV_PIX_FMT_YA16LE
@ AV_PIX_FMT_YA16LE
16 bits gray, 16 bits alpha (little-endian)
Definition: pixfmt.h:210
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:85
AV_PIX_FMT_MONOBLACK
@ AV_PIX_FMT_MONOBLACK
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:83
ff_infer_colors
bool ff_infer_colors(SwsColor *src, SwsColor *dst)
Definition: format.c:540
AV_PIX_FMT_YUVA422P12LE
@ AV_PIX_FMT_YUVA422P12LE
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, little-endian
Definition: pixfmt.h:367
AVCOL_PRI_BT709
@ AVCOL_PRI_BT709
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP 177 Annex B
Definition: pixfmt.h:638
AV_PIX_FMT_BGR565LE
@ AV_PIX_FMT_BGR565LE
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
Definition: pixfmt.h:118
AV_PIX_FMT_RGBA64LE
@ AV_PIX_FMT_RGBA64LE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:203
AV_PIX_FMT_YUVA444P12BE
@ AV_PIX_FMT_YUVA444P12BE
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, big-endian
Definition: pixfmt.h:368
sws_test_format
int sws_test_format(enum AVPixelFormat format, int output)
Test if a given (software) pixel format is supported.
Definition: format.c:557
AV_PIX_FMT_YUVA444P9LE
@ AV_PIX_FMT_YUVA444P9LE
planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
Definition: pixfmt.h:180
AV_PIX_FMT_Y210LE
@ AV_PIX_FMT_Y210LE
packed YUV 4:2:2 like YUYV422, 20bpp, data in the high bits, little-endian
Definition: pixfmt.h:382
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
@ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata associated with a video frame.
Definition: frame.h:120
AV_PIX_FMT_YUVA420P16LE
@ AV_PIX_FMT_YUVA420P16LE
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:188
AV_PIX_FMT_RGB8
@ AV_PIX_FMT_RGB8
packed RGB 3:3:2, 8bpp, (msb)3R 3G 2B(lsb)
Definition: pixfmt.h:93
AV_PIX_FMT_BGR0
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:265
AVCOL_SPC_YCGCO
@ AVCOL_SPC_YCGCO
used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
Definition: pixfmt.h:709
AV_PIX_FMT_BGR4
@ AV_PIX_FMT_BGR4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:91
AV_PIX_FMT_YUV440P10LE
@ AV_PIX_FMT_YUV440P10LE
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:298
SWS_COMP
#define SWS_COMP(X)
Definition: ops.h:88
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:81
AV_PIX_FMT_BGR555BE
@ AV_PIX_FMT_BGR555BE
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:119
AV_PIX_FMT_YUVA420P9LE
@ AV_PIX_FMT_YUVA420P9LE
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian
Definition: pixfmt.h:176
AV_PIX_FMT_GBRP12MSBLE
@ AV_PIX_FMT_GBRP12MSBLE
planar GBR 4:4:4 36bpp, lowest bits zero, little-endian
Definition: pixfmt.h:498
AV_PIX_FMT_YAF16BE
@ AV_PIX_FMT_YAF16BE
IEEE-754 half precision packed YA, 16 bits gray, 16 bits alpha, 32bpp, big-endian.
Definition: pixfmt.h:485
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:94
AV_PIX_FMT_ABGR
@ AV_PIX_FMT_ABGR
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:101
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:743
SWS_PIXEL_NONE
@ SWS_PIXEL_NONE
Definition: ops.h:34
index
int index
Definition: gxfenc.c:90
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
AV_PIX_FMT_YUV420P14LE
@ AV_PIX_FMT_YUV420P14LE
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:270
AV_PIX_FMT_YUV444P14BE
@ AV_PIX_FMT_YUV444P14BE
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:277
AV_PIX_FMT_BGR4_BYTE
@ AV_PIX_FMT_BGR4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
Definition: pixfmt.h:92
AVCIExy::x
AVRational x
Definition: csp.h:57
AV_PIX_FMT_X2RGB10LE
@ AV_PIX_FMT_X2RGB10LE
packed RGB 10:10:10, 30bpp, (msb)2X 10R 10G 10B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:384
AV_PIX_FMT_P212LE
@ AV_PIX_FMT_P212LE
interleaved chroma YUV 4:2:2, 24bpp, data in the high bits, little-endian
Definition: pixfmt.h:427
AV_PIX_FMT_YUV420P9BE
@ AV_PIX_FMT_YUV420P9BE
The following 12 formats have the disadvantage of needing 1 format for each bit depth.
Definition: pixfmt.h:153
AVCOL_TRC_SMPTE2084
@ AVCOL_TRC_SMPTE2084
SMPTE ST 2084 for 10-, 12-, 14- and 16-bit systems.
Definition: pixfmt.h:683
AVPrimaryCoefficients::b
AVCIExy b
Definition: csp.h:65
SwsPackOp::pattern
uint8_t pattern[4]
Packed bits are assumed to be LSB-aligned within the underlying integer type; i.e.
Definition: ops.h:146
AV_PIX_FMT_YUV444P10MSBLE
@ AV_PIX_FMT_YUV444P10MSBLE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), lowest bits zero, little-endian
Definition: pixfmt.h:492
AVPrimaryCoefficients::r
AVCIExy r
Definition: csp.h:65
AV_PIX_FMT_RGBF32BE
@ AV_PIX_FMT_RGBF32BE
IEEE-754 single precision packed RGB 32:32:32, 96bpp, RGBRGB..., big-endian.
Definition: pixfmt.h:420
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:75
AV_PIX_FMT_YUV440P12LE
@ AV_PIX_FMT_YUV440P12LE
planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:300
LegacyFormatEntry::is_supported_endianness
uint8_t is_supported_endianness
Definition: format.c:50
test_loc
static int test_loc(enum AVChromaLocation loc)
Definition: format.c:609
AV_PIX_FMT_GBRP10MSBBE
@ AV_PIX_FMT_GBRP10MSBBE
planar GBR 4:4:4 30bpp, lowest bits zero, big-endian
Definition: pixfmt.h:495
AV_PIX_FMT_FLAG_RGB
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:136
shift
static int shift(int a, int b)
Definition: bonk.c:261
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition: dsp.h:87
AV_PIX_FMT_BAYER_BGGR16LE
@ AV_PIX_FMT_BAYER_BGGR16LE
bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, little-endian
Definition: pixfmt.h:289
SwsClampOp
Definition: ops.h:178
AV_PIX_FMT_YUV420P12BE
@ AV_PIX_FMT_YUV420P12BE
planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:267
AVCOL_TRC_SMPTEST2084
@ AVCOL_TRC_SMPTEST2084
Definition: pixfmt.h:684
AVCOL_SPC_YCGCO_RO
@ AVCOL_SPC_YCGCO_RO
YCgCo-R, odd addition of bits.
Definition: pixfmt.h:719
AV_PIX_FMT_YUV422P10LE
@ AV_PIX_FMT_YUV422P10LE
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:158
i
#define i(width, name, range_min, range_max)
Definition: cbs_h264.c:63
AVDynamicHDRPlus::num_windows
uint8_t num_windows
The number of processing windows.
Definition: hdr_dynamic_metadata.h:259
AVCOL_TRC_LOG
@ AVCOL_TRC_LOG
"Logarithmic transfer characteristic (100:1 range)"
Definition: pixfmt.h:676
AV_PIX_FMT_RGB444BE
@ AV_PIX_FMT_RGB444BE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:137
AV_PIX_FMT_XV36BE
@ AV_PIX_FMT_XV36BE
packed XVYU 4:4:4, 48bpp, data in the high bits, zeros in the low bits, big-endian,...
Definition: pixfmt.h:417
AV_PIX_FMT_YUV422P14BE
@ AV_PIX_FMT_YUV422P14BE
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:273
AV_PIX_FMT_YA16BE
@ AV_PIX_FMT_YA16BE
16 bits gray, 16 bits alpha (big-endian)
Definition: pixfmt.h:209
size
int size
Definition: twinvq_data.h:10344
SwsShiftOp
Definition: ops.h:164
av_make_q
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
AV_PIX_FMT_GRAY12LE
@ AV_PIX_FMT_GRAY12LE
Y , 12bpp, little-endian.
Definition: pixfmt.h:319
SWS_OP_RSHIFT
@ SWS_OP_RSHIFT
Definition: ops.h:59
AV_PIX_FMT_GBRP9BE
@ AV_PIX_FMT_GBRP9BE
planar GBR 4:4:4 27bpp, big-endian
Definition: pixfmt.h:167
AV_PIX_FMT_FLAG_BITSTREAM
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:124
AVFrameSideData::data
uint8_t * data
Definition: frame.h:292
AVPrimaryCoefficients::g
AVCIExy g
Definition: csp.h:65
AVCHROMA_LOC_UNSPECIFIED
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:797
SwsFormat
Definition: format.h:77
AV_PIX_FMT_YUV420P10BE
@ AV_PIX_FMT_YUV420P10BE
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:155
AV_PIX_FMT_RGBAF16BE
@ AV_PIX_FMT_RGBAF16BE
IEEE-754 half precision packed RGBA 16:16:16:16, 64bpp, RGBARGBA..., big-endian.
Definition: pixfmt.h:403
AV_PIX_FMT_GBRP12MSBBE
@ AV_PIX_FMT_GBRP12MSBBE
planar GBR 4:4:4 36bpp, lowest bits zero, big-endian
Definition: pixfmt.h:497
range
enum AVColorRange range
Definition: mediacodec_wrapper.c:2594
SWS_OP_WRITE
@ SWS_OP_WRITE
Definition: ops.h:51
AV_PIX_FMT_NV16
@ AV_PIX_FMT_NV16
interleaved chroma YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:198
AV_PIX_FMT_BGR444BE
@ AV_PIX_FMT_BGR444BE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:139
AV_PIX_FMT_GBRP9LE
@ AV_PIX_FMT_GBRP9LE
planar GBR 4:4:4 27bpp, little-endian
Definition: pixfmt.h:168
SwsFormat::loc
enum AVChromaLocation loc
Definition: format.h:84
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:174
AV_PIX_FMT_GBRAP10LE
@ AV_PIX_FMT_GBRAP10LE
planar GBR 4:4:4:4 40bpp, little-endian
Definition: pixfmt.h:314
AVCOL_TRC_EXT_NB
@ AVCOL_TRC_EXT_NB
Not part of ABI.
Definition: pixfmt.h:693
SwsColor
Definition: format.h:60
sws_test_transfer
int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output)
Test if a given color transfer function is supported.
Definition: format.c:597
AV_PIX_FMT_BGR565BE
@ AV_PIX_FMT_BGR565BE
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
Definition: pixfmt.h:117
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
attributes.h
SWS_DITHER_NB
@ SWS_DITHER_NB
Definition: swscale.h:86
av_pix_fmt_desc_get_id
enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
Definition: pixdesc.c:3475
AV_PIX_FMT_YAF32LE
@ AV_PIX_FMT_YAF32LE
IEEE-754 single precision packed YA, 32 bits gray, 32 bits alpha, 64bpp, little-endian.
Definition: pixfmt.h:483
AV_PIX_FMT_RGB0
@ AV_PIX_FMT_RGB0
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:263
sws_isSupportedInput
int sws_isSupportedInput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported input format, 0 otherwise.
Definition: format.c:291
AV_PIX_FMT_P012BE
@ AV_PIX_FMT_P012BE
like NV12, with 12bpp per component, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:409
AV_PIX_FMT_P410LE
@ AV_PIX_FMT_P410LE
interleaved chroma YUV 4:4:4, 30bpp, data in the high bits, little-endian
Definition: pixfmt.h:393
SwsLinearOp
Definition: ops.h:193
AV_PIX_FMT_YUVA420P10LE
@ AV_PIX_FMT_YUVA420P10LE
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:182
AVCOL_SPC_CHROMA_DERIVED_NCL
@ AVCOL_SPC_CHROMA_DERIVED_NCL
Chromaticity-derived non-constant luminance system.
Definition: pixfmt.h:714
SwsColor::frame_avg
AVRational frame_avg
Definition: format.h:67
Q
#define Q(N)
Definition: format.c:36
AV_PIX_FMT_FLAG_BAYER
#define AV_PIX_FMT_FLAG_BAYER
The pixel format is following a Bayer pattern.
Definition: pixdesc.h:152
AVCOL_TRC_BT709
@ AVCOL_TRC_BT709
also ITU-R BT1361
Definition: pixfmt.h:668
AVChromaLocation
AVChromaLocation
Location of chroma samples.
Definition: pixfmt.h:796
AV_PIX_FMT_AYUV
@ AV_PIX_FMT_AYUV
packed AYUV 4:4:4:4, 32bpp (1 Cr & Cb sample per 1x1 Y & A samples), AYUVAYUV...
Definition: pixfmt.h:442
AV_PIX_FMT_ARGB
@ AV_PIX_FMT_ARGB
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:99
AV_PIX_FMT_BGRA64LE
@ AV_PIX_FMT_BGRA64LE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:205
AV_PIX_FMT_YUVA422P10BE
@ AV_PIX_FMT_YUVA422P10BE
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
Definition: pixfmt.h:183
AVCOL_SPC_SMPTE240M
@ AVCOL_SPC_SMPTE240M
derived from 170M primaries and D65 white point, 170M is derived from BT470 System M's primaries
Definition: pixfmt.h:708
AV_PIX_FMT_UYVA
@ AV_PIX_FMT_UYVA
packed UYVA 4:4:4:4, 32bpp (1 Cr & Cb sample per 1x1 Y & A samples), UYVAUYVA...
Definition: pixfmt.h:444
AV_PIX_FMT_YUVA444P12LE
@ AV_PIX_FMT_YUVA444P12LE
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, little-endian
Definition: pixfmt.h:369
AV_PIX_FMT_YUVA422P9BE
@ AV_PIX_FMT_YUVA422P9BE
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), big-endian
Definition: pixfmt.h:177
ff_fmt_from_pixfmt
void ff_fmt_from_pixfmt(enum AVPixelFormat pixfmt, SwsFormat *fmt)
Subset of ff_fmt_from_frame() that sets default metadata for the format.
Definition: format.c:483
unpack
static int unpack(const uint8_t *src, const uint8_t *src_end, uint8_t *dst, int width, int height)
Unpack buffer.
Definition: eatgv.c:73
AV_PIX_FMT_RGB555LE
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:115
sws_isSupportedEndiannessConversion
int sws_isSupportedEndiannessConversion(enum AVPixelFormat pix_fmt)
Definition: format.c:303
SwsFormat::format
enum AVPixelFormat format
Definition: format.h:80
AV_PIX_FMT_RGB48BE
@ AV_PIX_FMT_RGB48BE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:109
AVCOL_SPC_BT2020_NCL
@ AVCOL_SPC_BT2020_NCL
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:711
AVColorSpace
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:700
SwsPackOp
Definition: ops.h:141
AV_PIX_FMT_GRAY9BE
@ AV_PIX_FMT_GRAY9BE
Y , 9bpp, big-endian.
Definition: pixfmt.h:338
AV_PIX_FMT_NV24
@ AV_PIX_FMT_NV24
planar YUV 4:4:4, 24bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:371
SwsFormat::desc
const AVPixFmtDescriptor * desc
Definition: format.h:85
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:58
AV_PIX_FMT_YAF16LE
@ AV_PIX_FMT_YAF16LE
IEEE-754 half precision packed YA, 16 bits gray, 16 bits alpha, 32bpp, little-endian.
Definition: pixfmt.h:486
AV_PIX_FMT_BAYER_GBRG8
@ AV_PIX_FMT_BAYER_GBRG8
bayer, GBGB..(odd line), RGRG..(even line), 8-bit samples
Definition: pixfmt.h:287
sws_isSupportedOutput
int sws_isSupportedOutput(enum AVPixelFormat pix_fmt)
Return a positive value if pix_fmt is a supported output format, 0 otherwise.
Definition: format.c:297
AV_PIX_FMT_NV20LE
@ AV_PIX_FMT_NV20LE
interleaved chroma YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:199
ff_sws_encode_colors
int ff_sws_encode_colors(SwsContext *ctx, SwsPixelType type, SwsOpList *ops, const SwsFormat *src, const SwsFormat *dst, bool *incomplete)
ops_internal.h
AV_PIX_FMT_FLAG_BE
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:116
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:107
AV_PIX_FMT_XYZ12BE
@ AV_PIX_FMT_XYZ12BE
packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as big...
Definition: pixfmt.h:197
AV_PIX_FMT_X2RGB10BE
@ AV_PIX_FMT_X2RGB10BE
packed RGB 10:10:10, 30bpp, (msb)2X 10R 10G 10B(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:385
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
SwsFormat::width
int width
Definition: format.h:78
sws_test_frame
int sws_test_frame(const AVFrame *frame, int output)
Helper function to run all sws_test_* against a frame, as well as testing the basic frame properties ...
Definition: format.c:626
AV_PIX_FMT_NV21
@ AV_PIX_FMT_NV21
as above, but U and V bytes are swapped
Definition: pixfmt.h:97
AVMasteringDisplayMetadata
Mastering display metadata capable of representing the color volume of the display used to master the...
Definition: mastering_display_metadata.h:38
SwsOp
Definition: ops.h:238
AV_PIX_FMT_RGB4_BYTE
@ AV_PIX_FMT_RGB4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition: pixfmt.h:95
AVCOL_SPC_UNSPECIFIED
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:703
AV_PIX_FMT_YUV444P16BE
@ AV_PIX_FMT_YUV444P16BE
planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:133
ff_sws_decode_pixfmt
int ff_sws_decode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
Append a set of operations for decoding/encoding raw pixels.
AV_PIX_FMT_GBRPF32LE
@ AV_PIX_FMT_GBRPF32LE
IEEE-754 single precision planar GBR 4:4:4, 96bpp, little-endian.
Definition: pixfmt.h:342
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:658
AV_PIX_FMT_NV42
@ AV_PIX_FMT_NV42
as above, but U and V bytes are swapped
Definition: pixfmt.h:372
av_csp_eotf_function
void(* av_csp_eotf_function)(double Lw, double Lb, double c[3])
Function pointer representing an ITU EOTF transfer for a given reference display configuration.
Definition: csp.h:178
AVDynamicHDRPlus
This struct represents dynamic metadata for color volume transform - application 4 of SMPTE 2094-40:2...
Definition: hdr_dynamic_metadata.h:243
av_cmp_q
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:118
AV_PIX_FMT_GBRAP16LE
@ AV_PIX_FMT_GBRAP16LE
planar GBRA 4:4:4:4 64bpp, little-endian
Definition: pixfmt.h:214
SWS_DITHER_ED
@ SWS_DITHER_ED
Definition: swscale.h:83
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:84
AV_PIX_FMT_GRAY12BE
@ AV_PIX_FMT_GRAY12BE
Y , 12bpp, big-endian.
Definition: pixfmt.h:318
AV_PIX_FMT_YVYU422
@ AV_PIX_FMT_YVYU422
packed YUV 4:2:2, 16bpp, Y0 Cr Y1 Cb
Definition: pixfmt.h:207
AVCOL_PRI_BT470M
@ AVCOL_PRI_BT470M
also FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:641
SwsComps::flags
SwsCompFlags flags[4]
Definition: ops.h:110
pixfmt
enum AVPixelFormat pixfmt
Definition: kmsgrab.c:367
AV_PIX_FMT_0BGR
@ AV_PIX_FMT_0BGR
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:264
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:96
AV_PIX_FMT_Y212LE
@ AV_PIX_FMT_Y212LE
packed YUV 4:2:2 like YUYV422, 24bpp, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:412
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:265
AV_PIX_FMT_BAYER_BGGR16BE
@ AV_PIX_FMT_BAYER_BGGR16BE
bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, big-endian
Definition: pixfmt.h:290
AV_PIX_FMT_P410BE
@ AV_PIX_FMT_P410BE
interleaved chroma YUV 4:4:4, 30bpp, data in the high bits, big-endian
Definition: pixfmt.h:392
SWS_OP_MAX
@ SWS_OP_MAX
Definition: ops.h:65
AV_PIX_FMT_P016LE
@ AV_PIX_FMT_P016LE
like NV12, with 16bpp per component, little-endian
Definition: pixfmt.h:323
ff_fmt_equal
static int ff_fmt_equal(const SwsFormat *fmt1, const SwsFormat *fmt2)
Definition: format.h:135
AVCIExy::y
AVRational y
Definition: csp.h:57
AV_PIX_FMT_GRAYF32BE
@ AV_PIX_FMT_GRAYF32BE
IEEE-754 single precision Y, 32bpp, big-endian.
Definition: pixfmt.h:363
AV_PIX_FMT_GRAYF16BE
@ AV_PIX_FMT_GRAYF16BE
IEEE-754 half precision Y, 16bpp, big-endian.
Definition: pixfmt.h:471
AV_PIX_FMT_RGBF16BE
@ AV_PIX_FMT_RGBF16BE
IEEE-754 half precision packed RGB 16:16:16, 48bpp, RGBRGB..., big-endian.
Definition: pixfmt.h:451
AV_PIX_FMT_GBRP12BE
@ AV_PIX_FMT_GBRP12BE
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:279
AV_PIX_FMT_UYVY422
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:88
AV_PIX_FMT_YUV444P12BE
@ AV_PIX_FMT_YUV444P12BE
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:275
AV_FRAME_DATA_DYNAMIC_HDR_PLUS
@ AV_FRAME_DATA_DYNAMIC_HDR_PLUS
HDR dynamic metadata associated with a video frame.
Definition: frame.h:159
SWS_DITHER_A_DITHER
@ SWS_DITHER_A_DITHER
Definition: swscale.h:84
AVCOL_TRC_ARIB_STD_B67
@ AVCOL_TRC_ARIB_STD_B67
ARIB STD-B67, known as "Hybrid log-gamma".
Definition: pixfmt.h:687
SwsComps
Definition: ops.h:109
AVCOL_PRI_EXT_NB
@ AVCOL_PRI_EXT_NB
Not part of ABI.
Definition: pixfmt.h:659
AV_PIX_FMT_FLAG_XYZ
#define AV_PIX_FMT_FLAG_XYZ
The pixel format contains XYZ-like data (as opposed to YUV/RGB/grayscale).
Definition: pixdesc.h:163
AVRational::den
int den
Denominator.
Definition: rational.h:60
SWS_COMP_SWAPPED
@ SWS_COMP_SWAPPED
Definition: ops.h:106
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AVCOL_SPC_FCC
@ AVCOL_SPC_FCC
FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
Definition: pixfmt.h:705
AV_PIX_FMT_XV48LE
@ AV_PIX_FMT_XV48LE
packed XVYU 4:4:4, 64bpp, little-endian, variant of Y416 where alpha channel is left undefined
Definition: pixfmt.h:464
SwsSwizzleOp::y
uint8_t y
Definition: ops.h:157
AV_PIX_FMT_YUV444P9LE
@ AV_PIX_FMT_YUV444P9LE
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:160
SWS_OP_SWAP_BYTES
@ SWS_OP_SWAP_BYTES
Definition: ops.h:52
SwsFormat::hw_format
enum AVPixelFormat hw_format
Definition: format.h:81
SwsFormat::color
SwsColor color
Definition: format.h:86
hdr_dynamic_metadata.h
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:117
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
AV_PIX_FMT_P216LE
@ AV_PIX_FMT_P216LE
interleaved chroma YUV 4:2:2, 32bpp, little-endian
Definition: pixfmt.h:396
AV_PIX_FMT_RGBF32LE
@ AV_PIX_FMT_RGBF32LE
IEEE-754 single precision packed RGB 32:32:32, 96bpp, RGBRGB..., little-endian.
Definition: pixfmt.h:421
AV_PIX_FMT_V30XBE
@ AV_PIX_FMT_V30XBE
packed VYUX 4:4:4 like XV30, 32bpp, (msb)10V 10Y 10U 2X(lsb), big-endian
Definition: pixfmt.h:448
AVMasteringDisplayMetadata::min_luminance
AVRational min_luminance
Min luminance of mastering display (cd/m^2).
Definition: mastering_display_metadata.h:52
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
SwsSwizzleOp::x
uint8_t x
Definition: ops.h:157
AV_PIX_FMT_YUVA420P10BE
@ AV_PIX_FMT_YUVA420P10BE
planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h:181
SwsFormat::csp
enum AVColorSpace csp
Definition: format.h:83
SwsColor::min_luma
AVRational min_luma
Definition: format.h:64
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:78
SWS_COMP_EXACT
@ SWS_COMP_EXACT
Definition: ops.h:104
AV_PIX_FMT_RGB565BE
@ AV_PIX_FMT_RGB565BE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
Definition: pixfmt.h:112
AV_PIX_FMT_YUV420P16BE
@ AV_PIX_FMT_YUV420P16BE
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:129
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:165
AV_PIX_FMT_YUV422P16BE
@ AV_PIX_FMT_YUV422P16BE
planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:131
AV_PIX_FMT_P212BE
@ AV_PIX_FMT_P212BE
interleaved chroma YUV 4:2:2, 24bpp, data in the high bits, big-endian
Definition: pixfmt.h:426
desc
const char * desc
Definition: libsvtav1.c:83
SwsReadWriteOp::elems
uint8_t elems
Examples: rgba = 4x u8 packed yuv444p = 3x u8 rgb565 = 1x u16 <- use SWS_OP_UNPACK to unpack monow = ...
Definition: ops.h:126
AV_PIX_FMT_GRAY16LE
@ AV_PIX_FMT_GRAY16LE
Y , 16bpp, little-endian.
Definition: pixfmt.h:105
AV_PIX_FMT_X2BGR10LE
@ AV_PIX_FMT_X2BGR10LE
packed BGR 10:10:10, 30bpp, (msb)2X 10B 10G 10R(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:386
AV_PIX_FMT_V30XLE
@ AV_PIX_FMT_V30XLE
packed VYUX 4:4:4 like XV30, 32bpp, (msb)10V 10Y 10U 2X(lsb), little-endian
Definition: pixfmt.h:449
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:77
AV_PIX_FMT_P010LE
@ AV_PIX_FMT_P010LE
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:307
SwsColor::max_luma
AVRational max_luma
Definition: format.h:65
mastering_display_metadata.h
AV_PIX_FMT_XV48BE
@ AV_PIX_FMT_XV48BE
packed XVYU 4:4:4, 64bpp, big-endian, variant of Y416 where alpha channel is left undefined
Definition: pixfmt.h:463
AV_PIX_FMT_YUVA444P10LE
@ AV_PIX_FMT_YUVA444P10LE
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:186
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:290
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AV_PIX_FMT_BGR555LE
@ AV_PIX_FMT_BGR555LE
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:120
LegacyFormatEntry
Definition: format.c:47
AVCOL_TRC_V_LOG
@ AVCOL_TRC_V_LOG
Definition: pixfmt.h:692
AV_PIX_FMT_YAF32BE
@ AV_PIX_FMT_YAF32BE
IEEE-754 single precision packed YA, 32 bits gray, 32 bits alpha, 64bpp, big-endian.
Definition: pixfmt.h:482
AV_PIX_FMT_P216BE
@ AV_PIX_FMT_P216BE
interleaved chroma YUV 4:2:2, 32bpp, big-endian
Definition: pixfmt.h:395
av_add_q
AVRational av_add_q(AVRational b, AVRational c)
Add two rationals.
Definition: rational.c:93
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AV_PIX_FMT_P412LE
@ AV_PIX_FMT_P412LE
interleaved chroma YUV 4:4:4, 36bpp, data in the high bits, little-endian
Definition: pixfmt.h:430
AV_PIX_FMT_GRAY14LE
@ AV_PIX_FMT_GRAY14LE
Y , 14bpp, little-endian.
Definition: pixfmt.h:361
AV_PIX_FMT_GRAYF16LE
@ AV_PIX_FMT_GRAYF16LE
IEEE-754 half precision Y, 16bpp, little-endian.
Definition: pixfmt.h:472
AVColorPrimariesDesc::prim
AVPrimaryCoefficients prim
Definition: csp.h:80
AVCOL_SPC_SMPTE2085
@ AVCOL_SPC_SMPTE2085
SMPTE 2085, Y'D'zD'x.
Definition: pixfmt.h:713
AV_PIX_FMT_XV36LE
@ AV_PIX_FMT_XV36LE
packed XVYU 4:4:4, 48bpp, data in the high bits, zeros in the low bits, little-endian,...
Definition: pixfmt.h:418
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:80
AV_PIX_FMT_GRAY14BE
@ AV_PIX_FMT_GRAY14BE
Y , 14bpp, big-endian.
Definition: pixfmt.h:360
SwsSwizzleOp::in
uint8_t in[4]
Definition: ops.h:156
SWS_OP_CONVERT
@ SWS_OP_CONVERT
Definition: ops.h:63
AV_PIX_FMT_YUVA422P16BE
@ AV_PIX_FMT_YUVA422P16BE
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
Definition: pixfmt.h:189
AV_PIX_FMT_YUV440P10BE
@ AV_PIX_FMT_YUV440P10BE
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
Definition: pixfmt.h:299
AV_PIX_FMT_YUV422P9LE
@ AV_PIX_FMT_YUV422P9LE
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:164
AV_PIX_FMT_YUVA422P16LE
@ AV_PIX_FMT_YUVA422P16LE
planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:190
AV_PIX_FMT_GBRP14LE
@ AV_PIX_FMT_GBRP14LE
planar GBR 4:4:4 42bpp, little-endian
Definition: pixfmt.h:282
av_csp_itu_eotf
av_csp_eotf_function av_csp_itu_eotf(enum AVColorTransferCharacteristic trc)
Returns the ITU EOTF corresponding to a given TRC.
Definition: csp.c:684
AV_PIX_FMT_YUV444P12MSBLE
@ AV_PIX_FMT_YUV444P12MSBLE
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), lowest bits zero, little-endian
Definition: pixfmt.h:494
RGBA
#define RGBA(r, g, b, a)
Definition: dvbsubdec.c:42
hwcontext.h
AVCHROMA_LOC_NB
@ AVCHROMA_LOC_NB
Not part of ABI.
Definition: pixfmt.h:804
AV_PIX_FMT_0RGB
@ AV_PIX_FMT_0RGB
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:262
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10BE
@ AV_PIX_FMT_GBRAP10BE
planar GBR 4:4:4:4 40bpp, big-endian
Definition: pixfmt.h:313
AVCOL_TRC_SMPTE428
@ AVCOL_TRC_SMPTE428
SMPTE ST 428-1.
Definition: pixfmt.h:685
SWS_ACCURATE_RND
@ SWS_ACCURATE_RND
Force bit-exact output.
Definition: swscale.h:156
AVLumaCoefficients::cb
AVRational cb
Definition: csp.h:49
AV_PIX_FMT_YUVA444P16LE
@ AV_PIX_FMT_YUVA444P16LE
planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:192
AV_PIX_FMT_GBRPF16BE
@ AV_PIX_FMT_GBRPF16BE
IEEE-754 half precision planer GBR 4:4:4, 48bpp, big-endian.
Definition: pixfmt.h:466
SwsOpList
Helper struct for representing a list of operations.
Definition: ops.h:288
AV_PIX_FMT_VUYX
@ AV_PIX_FMT_VUYX
packed VUYX 4:4:4:4, 32bpp, Variant of VUYA where alpha channel is left undefined
Definition: pixfmt.h:406
AV_PIX_FMT_VYU444
@ AV_PIX_FMT_VYU444
packed VYU 4:4:4, 24bpp (1 Cr & Cb sample per 1x1 Y), VYUVYU...
Definition: pixfmt.h:446
AV_PIX_FMT_YUVA422P12BE
@ AV_PIX_FMT_YUVA422P12BE
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, big-endian
Definition: pixfmt.h:366
AVCOL_SPC_BT709
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / derived in SMPTE RP 177 Annex B
Definition: pixfmt.h:702
AVColorRange
AVColorRange
Visual content value range.
Definition: pixfmt.h:742
SwsContext
Main external API structure.
Definition: swscale.h:206
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
AV_PIX_FMT_BGR444LE
@ AV_PIX_FMT_BGR444LE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:138
AVCOL_SPC_ICTCP
@ AVCOL_SPC_ICTCP
ITU-R BT.2100-0, ICtCp.
Definition: pixfmt.h:716
AV_PIX_FMT_YUV422P12LE
@ AV_PIX_FMT_YUV422P12LE
planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:272
AV_PIX_FMT_YUVA420P9BE
@ AV_PIX_FMT_YUVA420P9BE
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), big-endian
Definition: pixfmt.h:175
AV_PIX_FMT_BAYER_GRBG8
@ AV_PIX_FMT_BAYER_GRBG8
bayer, GRGR..(odd line), BGBG..(even line), 8-bit samples
Definition: pixfmt.h:288
csputils.h
src
#define src
Definition: vp8dsp.c:248
AVCOL_PRI_EXT_BASE
@ AVCOL_PRI_EXT_BASE
Definition: pixfmt.h:657
AV_PIX_FMT_GBRAP14LE
@ AV_PIX_FMT_GBRAP14LE
planar GBR 4:4:4:4 56bpp, little-endian
Definition: pixfmt.h:433
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:173
AV_PIX_FMT_GBRPF16LE
@ AV_PIX_FMT_GBRPF16LE
IEEE-754 half precision planer GBR 4:4:4, 48bpp, little-endian.
Definition: pixfmt.h:467
ff_sws_encode_pixfmt
int ff_sws_encode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
infer_trc_ref
static int infer_trc_ref(SwsColor *csp, const SwsColor *ref)
Definition: format.c:515
SwsColor::prim
enum AVColorPrimaries prim
Definition: format.h:61
av_csp_itu_eotf_inv
av_csp_eotf_function av_csp_itu_eotf_inv(enum AVColorTransferCharacteristic trc)
Returns the mathematical inverse of the corresponding EOTF.
Definition: csp.c:710
AV_PIX_FMT_UYYVYY411
@ AV_PIX_FMT_UYYVYY411
packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
Definition: pixfmt.h:89
AV_PIX_FMT_BGR48BE
@ AV_PIX_FMT_BGR48BE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:145
ff_fmt_clear
static void ff_fmt_clear(SwsFormat *fmt)
Definition: format.h:89
AV_PIX_FMT_YUVA422P9LE
@ AV_PIX_FMT_YUVA422P9LE
planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
Definition: pixfmt.h:178
ff_sws_frame_from_avframe
void ff_sws_frame_from_avframe(SwsFrame *dst, const AVFrame *src)
Initialize a SwsFrame from an AVFrame.
Definition: format.c:653
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