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 /* Variant of sws_test_format() for the ops-based code */
558 static int test_format_ops(enum AVPixelFormat format, int output);
559 static int test_format_legacy(enum AVPixelFormat format, int output)
560 {
561  return output ? sws_isSupportedOutput(format) : sws_isSupportedInput(format);
562 }
563 
564 int ff_sws_test_pixfmt_backend(const SwsBackend backends,
565  enum AVPixelFormat format, int output)
566 {
567  /* The only non-ops backend is the legacy backend */
568  const SwsBackend backends_ops = SWS_BACKEND_ALL ^ SWS_BACKEND_LEGACY;
569  return ((backends & SWS_BACKEND_LEGACY) && test_format_legacy(format, output)) ||
570  ((backends & backends_ops) && test_format_ops(format, output));
571 }
572 
573 int sws_test_format(enum AVPixelFormat format, int output)
574 {
575  return ff_sws_test_pixfmt_backend(SWS_BACKEND_STABLE, format, output);
576 }
577 
578 int sws_test_hw_format(enum AVPixelFormat format)
579 {
580  switch (format) {
581  case AV_PIX_FMT_NONE: return 1;
582 #if CONFIG_VULKAN
583  case AV_PIX_FMT_VULKAN: return 1;
584 #endif
585  default: return 0;
586  }
587 }
588 
589 int sws_test_colorspace(enum AVColorSpace csp, int output)
590 {
591  switch (csp) {
592  case AVCOL_SPC_UNSPECIFIED:
593  case AVCOL_SPC_RGB:
594  case AVCOL_SPC_BT709:
595  case AVCOL_SPC_BT470BG:
596  case AVCOL_SPC_SMPTE170M:
597  case AVCOL_SPC_FCC:
598  case AVCOL_SPC_SMPTE240M:
599  case AVCOL_SPC_BT2020_NCL:
600  return 1;
601  default:
602  return 0;
603  }
604 }
605 
606 int sws_test_primaries(enum AVColorPrimaries prim, int output)
607 {
608  return ((prim > AVCOL_PRI_RESERVED0 && prim < AVCOL_PRI_NB) ||
609  (prim >= AVCOL_PRI_EXT_BASE && prim < AVCOL_PRI_EXT_NB)) &&
610  prim != AVCOL_PRI_RESERVED;
611 }
612 
613 int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output)
614 {
615  av_csp_eotf_function eotf = output ? av_csp_itu_eotf_inv(trc)
616  : av_csp_itu_eotf(trc);
617  return trc == AVCOL_TRC_UNSPECIFIED || eotf != NULL;
618 }
619 
620 static int test_range(enum AVColorRange range)
621 {
622  return (unsigned)range < AVCOL_RANGE_NB;
623 }
624 
625 static int test_loc(enum AVChromaLocation loc)
626 {
627  return (unsigned)loc < AVCHROMA_LOC_NB;
628 }
629 
630 int ff_test_fmt(const SwsBackend backends, const SwsFormat *fmt, int output)
631 {
632  return fmt->width > 0 && fmt->height > 0 &&
633  ff_sws_test_pixfmt_backend(backends, fmt->format, output) &&
634  sws_test_colorspace(fmt->csp, output) &&
635  sws_test_primaries (fmt->color.prim, output) &&
636  sws_test_transfer (fmt->color.trc, output) &&
637  sws_test_hw_format (fmt->hw_format) &&
638  test_range (fmt->range) &&
639  test_loc (fmt->loc);
640 }
641 
642 int sws_test_frame(const AVFrame *frame, int output)
643 {
644  for (int field = 0; field < 2; field++) {
645  const SwsFormat fmt = ff_fmt_from_frame(frame, field);
646  if (!ff_test_fmt(SWS_BACKEND_STABLE, &fmt, output))
647  return 0;
648  if (!fmt.interlaced)
649  break;
650  }
651 
652  return 1;
653 }
654 
655 int sws_is_noop(const AVFrame *dst, const AVFrame *src)
656 {
657  for (int field = 0; field < 2; field++) {
658  SwsFormat dst_fmt = ff_fmt_from_frame(dst, field);
659  SwsFormat src_fmt = ff_fmt_from_frame(src, field);
660  if (!ff_fmt_equal(&dst_fmt, &src_fmt))
661  return 0;
662  if (!dst_fmt.interlaced)
663  break;
664  }
665 
666  return 1;
667 }
668 
669 void ff_sws_frame_from_avframe(SwsFrame *dst, const AVFrame *src)
670 {
671  dst->format = src->format;
672  dst->width = src->width;
673  dst->height = src->height;
674  dst->avframe = src;
675  for (int i = 0; i < FF_ARRAY_ELEMS(dst->data); i++) {
676  dst->data[i] = src->data[i];
677  dst->linesize[i] = src->linesize[i];
678  }
679 }
680 
681 #if CONFIG_UNSTABLE
682 
683 /* Returns the type suitable for a pixel after fully decoding/unpacking it */
684 static SwsPixelType fmt_pixel_type(enum AVPixelFormat fmt)
685 {
686  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
687  const int bits = FFALIGN(desc->comp[0].depth, 8);
688  if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
689  switch (bits) {
690  case 32: return SWS_PIXEL_F32;
691  /* TODO: no support for 16-bit float yet */
692  }
693  } else {
694  switch (bits) {
695  case 8: return SWS_PIXEL_U8;
696  case 16: return SWS_PIXEL_U16;
697  /* TODO: AVRational cannot represent UINT32_MAX */
698  }
699  }
700 
701  return SWS_PIXEL_NONE;
702 }
703 
704 /* A regular format is defined as any format that contains only a single
705  * component per elementary data type (i.e. no sub-byte pack/unpack needed),
706  * and whose components map 1:1 onto elementary data units */
707 static int is_regular_fmt(enum AVPixelFormat fmt)
708 {
709  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
710  if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_BAYER))
711  return 0; /* no 1:1 correspondence between components and data units */
712  if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM))
713  return 0; /* bitstream formats are packed by definition */
714  if ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) || desc->nb_components == 1)
715  return 1; /* planar formats are regular by definition */
716 
717  const int step = desc->comp[0].step;
718  int total_bits = 0;
719 
720  for (int i = 0; i < desc->nb_components; i++) {
721  if (desc->comp[i].shift || desc->comp[i].step != step)
722  return 0; /* irregular/packed format */
723  total_bits += desc->comp[i].depth;
724  }
725 
726  /* Exclude formats with missing components like RGB0, 0RGB, etc. */
727  return total_bits == step * 8;
728 }
729 
730 typedef struct FmtInfo {
731  SwsReadWriteOp rw;
732  SwsSwizzleOp swizzle;
733  SwsPackOp pack;
734  int shift;
735 } FmtInfo;
736 
737 #define BITSTREAM_FMT(SWIZ, FRAC, MODE, ...) (FmtInfo) { \
738  .rw = { .elems = 1, .frac = FRAC, .mode = MODE }, \
739  .swizzle = SWIZ, \
740  __VA_ARGS__ \
741 }
742 
743 #define SUBPACKED_FMT(SWIZ, ...) (FmtInfo) { \
744  .rw = { .elems = 1, .mode = SWS_RW_PACKED }, \
745  .swizzle = SWIZ, \
746  .pack.pattern = {__VA_ARGS__}, \
747 }
748 
749 #define PACKED_FMT(SWIZ, N, ...) (FmtInfo) { \
750  .rw = { .elems = N, .mode = SWS_RW_PACKED }, \
751  .swizzle = SWIZ, \
752  __VA_ARGS__ \
753 }
754 
755 #define RGBA SWS_SWIZZLE(0, 1, 2, 3)
756 #define BGRA SWS_SWIZZLE(2, 1, 0, 3)
757 #define ARGB SWS_SWIZZLE(3, 0, 1, 2)
758 #define ABGR SWS_SWIZZLE(3, 2, 1, 0)
759 #define AVYU SWS_SWIZZLE(3, 2, 0, 1)
760 #define VYUA SWS_SWIZZLE(2, 0, 1, 3)
761 #define UYVA SWS_SWIZZLE(1, 0, 2, 3)
762 #define VUYA BGRA
763 
764 static FmtInfo fmt_info_irregular(enum AVPixelFormat fmt)
765 {
766  switch (fmt) {
767  /* Bitstream formats */
768  case AV_PIX_FMT_MONOWHITE:
769  case AV_PIX_FMT_MONOBLACK:
770  return BITSTREAM_FMT(RGBA, 3, SWS_RW_PLANAR);
771  case AV_PIX_FMT_RGB4: return BITSTREAM_FMT(RGBA, 1, SWS_RW_PACKED, .pack = {{ 1, 2, 1 }});
772  case AV_PIX_FMT_BGR4: return BITSTREAM_FMT(BGRA, 1, SWS_RW_PACKED, .pack = {{ 1, 2, 1 }});
773 
774  /* Sub-packed 8-bit aligned formats */
775  case AV_PIX_FMT_RGB4_BYTE: return SUBPACKED_FMT(RGBA, 1, 2, 1);
776  case AV_PIX_FMT_BGR4_BYTE: return SUBPACKED_FMT(BGRA, 1, 2, 1);
777  case AV_PIX_FMT_RGB8: return SUBPACKED_FMT(RGBA, 3, 3, 2);
778  case AV_PIX_FMT_BGR8: return SUBPACKED_FMT(BGRA, 2, 3, 3);
779 
780  /* Sub-packed 16-bit aligned formats */
781  case AV_PIX_FMT_RGB565LE:
782  case AV_PIX_FMT_RGB565BE:
783  return SUBPACKED_FMT(RGBA, 5, 6, 5);
784  case AV_PIX_FMT_BGR565LE:
785  case AV_PIX_FMT_BGR565BE:
786  return SUBPACKED_FMT(BGRA, 5, 6, 5);
787  case AV_PIX_FMT_RGB555LE:
788  case AV_PIX_FMT_RGB555BE:
789  return SUBPACKED_FMT(RGBA, 5, 5, 5);
790  case AV_PIX_FMT_BGR555LE:
791  case AV_PIX_FMT_BGR555BE:
792  return SUBPACKED_FMT(BGRA, 5, 5, 5);
793  case AV_PIX_FMT_RGB444LE:
794  case AV_PIX_FMT_RGB444BE:
795  return SUBPACKED_FMT(RGBA, 4, 4, 4);
796  case AV_PIX_FMT_BGR444LE:
797  case AV_PIX_FMT_BGR444BE:
798  return SUBPACKED_FMT(BGRA, 4, 4, 4);
799 
800  /* Sub-packed 32-bit aligned formats */
801  case AV_PIX_FMT_X2RGB10LE:
802  case AV_PIX_FMT_X2RGB10BE:
803  return SUBPACKED_FMT(ARGB, 2, 10, 10, 10);
804  case AV_PIX_FMT_X2BGR10LE:
805  case AV_PIX_FMT_X2BGR10BE:
806  return SUBPACKED_FMT(ABGR, 2, 10, 10, 10);
807  case AV_PIX_FMT_XV30LE:
808  case AV_PIX_FMT_XV30BE:
809  return SUBPACKED_FMT(AVYU, 2, 10, 10, 10);
810  case AV_PIX_FMT_V30XLE:
811  case AV_PIX_FMT_V30XBE:
812  return SUBPACKED_FMT(VYUA, 10, 10, 10, 2);
813 
814  /* 3-component formats with extra padding */
815  case AV_PIX_FMT_RGB0: return PACKED_FMT(RGBA, 4);
816  case AV_PIX_FMT_BGR0: return PACKED_FMT(BGRA, 4);
817  case AV_PIX_FMT_0RGB: return PACKED_FMT(ARGB, 4);
818  case AV_PIX_FMT_0BGR: return PACKED_FMT(ABGR, 4);
819  case AV_PIX_FMT_VUYX: return PACKED_FMT(VUYA, 4);
820  case AV_PIX_FMT_XV36LE:
821  case AV_PIX_FMT_XV36BE:
822  return PACKED_FMT(UYVA, 4, .shift = 4);
823  case AV_PIX_FMT_XV48LE:
824  case AV_PIX_FMT_XV48BE:
825  return PACKED_FMT(UYVA, 4);
826  }
827 
828  return (FmtInfo) {0};
829 }
830 
831 struct comp {
832  int index;
833  int plane;
834  int offset;
835 };
836 
837 /* Compare by (plane, offset) */
838 static int cmp_comp(const void *a, const void *b) {
839  const struct comp *ca = a;
840  const struct comp *cb = b;
841  if (ca->plane != cb->plane)
842  return ca->plane - cb->plane;
843  return ca->offset - cb->offset;
844 }
845 
846 static int fmt_analyze_regular(const AVPixFmtDescriptor *desc, SwsReadWriteOp *rw_op,
847  SwsSwizzleOp *swizzle, SwsShiftOp *shift)
848 {
849  if (desc->nb_components == 2) {
850  /* YA formats */
851  *swizzle = SWS_SWIZZLE(0, 3, 1, 2);
852  } else {
853  /* Sort by increasing component order */
854  struct comp sorted[4] = { {0}, {1}, {2}, {3} };
855  for (int i = 0; i < desc->nb_components; i++) {
856  sorted[i].plane = desc->comp[i].plane;
857  sorted[i].offset = desc->comp[i].offset;
858  }
859 
860  qsort(sorted, desc->nb_components, sizeof(struct comp), cmp_comp);
861 
862  SwsSwizzleOp swiz = SWS_SWIZZLE(0, 1, 2, 3);
863  for (int i = 0; i < desc->nb_components; i++)
864  swiz.in[i] = sorted[i].index;
865  *swizzle = swiz;
866  }
867 
868  SwsReadWriteMode mode = SWS_RW_PLANAR;
869  if (desc->nb_components > 1 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR))
870  mode = SWS_RW_PACKED;
871 
872  *shift = (SwsShiftOp) { desc->comp[0].shift };
873  *rw_op = (SwsReadWriteOp) {
874  .elems = desc->nb_components,
875  .mode = mode,
876  };
877  return 0;
878 }
879 
880 static int fmt_analyze(enum AVPixelFormat fmt, SwsReadWriteOp *rw_op,
881  SwsPackOp *pack_op, SwsSwizzleOp *swizzle,
882  SwsShiftOp *shift, SwsPixelType *pixel_type,
883  SwsPixelType *raw_type)
884 {
885  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
886  if (!desc)
887  return AVERROR(EINVAL);
888 
889  /* No support for subsampled formats at the moment */
890  if (desc->log2_chroma_w || desc->log2_chroma_h)
891  return AVERROR(ENOTSUP);
892 
893  /* No support for semi-planar formats at the moment */
894  if (desc->flags & AV_PIX_FMT_FLAG_PLANAR &&
895  av_pix_fmt_count_planes(fmt) < desc->nb_components)
896  return AVERROR(ENOTSUP);
897 
898  *pixel_type = *raw_type = fmt_pixel_type(fmt);
899  if (!*pixel_type)
900  return AVERROR(ENOTSUP);
901 
902  if (is_regular_fmt(fmt)) {
903  *pack_op = (SwsPackOp) {0};
904  return fmt_analyze_regular(desc, rw_op, swizzle, shift);
905  }
906 
907  FmtInfo info = fmt_info_irregular(fmt);
908  if (!info.rw.elems)
909  return AVERROR(ENOTSUP);
910 
911  *rw_op = info.rw;
912  *pack_op = info.pack;
913  *swizzle = info.swizzle;
914  *shift = (SwsShiftOp) { info.shift };
915 
916  if (info.pack.pattern[0]) {
917  const int sum = info.pack.pattern[0] + info.pack.pattern[1] +
918  info.pack.pattern[2] + info.pack.pattern[3];
919  if (sum > 16)
920  *raw_type = SWS_PIXEL_U32;
921  else if (sum > 8)
922  *raw_type = SWS_PIXEL_U16;
923  else
924  *raw_type = SWS_PIXEL_U8;
925  }
926 
927  return 0;
928 }
929 
930 static int test_format_ops(enum AVPixelFormat format, int output)
931 {
932  SwsReadWriteOp rw;
933  SwsSwizzleOp swizzle;
934  SwsPackOp pack;
935  SwsShiftOp shift;
936  SwsPixelType pixel_type, raw_type;
937  int ret = fmt_analyze(format, &rw, &pack, &swizzle, &shift,
938  &pixel_type, &raw_type);
939  return ret == 0;
940 }
941 
942 static SwsSwizzleOp swizzle_inv(SwsSwizzleOp swiz) {
943  /* Input[x] =: Output[swizzle.x] */
944  unsigned out[4];
945  out[swiz.x] = 0;
946  out[swiz.y] = 1;
947  out[swiz.z] = 2;
948  out[swiz.w] = 3;
949  return (SwsSwizzleOp) {{ .x = out[0], out[1], out[2], out[3] }};
950 }
951 
952 /**
953  * This initializes all absent components explicitly to zero. There is no
954  * need to worry about the correct neutral value as fmt_decode() will
955  * implicitly ignore and overwrite absent components in any case. This function
956  * is just to ensure that we don't operate on undefined memory. In most cases,
957  * it will end up getting pushed towards the output or optimized away entirely
958  * by the optimization pass.
959  */
960 static SwsClearOp fmt_clear(enum AVPixelFormat fmt)
961 {
962  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
963  const bool has_chroma = desc->nb_components >= 3;
964  const bool has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA;
965 
966  SwsClearOp c = {0};
967  if (!has_chroma) {
968  c.mask |= SWS_COMP(1) | SWS_COMP(2);
969  c.value[1] = c.value[2] = Q0;
970  }
971 
972  if (!has_alpha) {
973  c.mask |= SWS_COMP(3);
974  c.value[3] = Q0;
975  }
976 
977  return c;
978 }
979 
980 #if HAVE_BIGENDIAN
981 # define NATIVE_ENDIAN_FLAG AV_PIX_FMT_FLAG_BE
982 #else
983 # define NATIVE_ENDIAN_FLAG 0
984 #endif
985 
986 int ff_sws_decode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
987 {
988  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
989  SwsPixelType pixel_type, raw_type;
990  SwsReadWriteOp rw_op;
991  SwsSwizzleOp swizzle;
992  SwsPackOp unpack;
993  SwsComps *comps = &ops->comps_src;
994  SwsShiftOp shift;
995 
996  RET(fmt_analyze(fmt, &rw_op, &unpack, &swizzle, &shift,
997  &pixel_type, &raw_type));
998 
999  swizzle = swizzle_inv(swizzle);
1000 
1001  /* Set baseline pixel content flags */
1002  const int integer = ff_sws_pixel_type_is_int(raw_type);
1003  const int swapped = ff_sws_pixel_type_size(raw_type) > 1 &&
1004  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG;
1005  for (int i = 0; i < rw_op.elems; i++) {
1006  comps->flags[i] = (integer ? SWS_COMP_EXACT : 0) |
1007  (swapped ? SWS_COMP_SWAPPED : 0);
1008  }
1009 
1010  /* Generate value range information for simple unpacked formats */
1011  if (integer && !unpack.pattern[0]) {
1012  /* YA formats have desc->comp[] in the order {Y, A} instead of the
1013  * canonical order {Y, U, V, A} */
1014  const int is_ya = desc->nb_components == 2;
1015  for (int c = 0; c < desc->nb_components; c++) {
1016  const int bits = desc->comp[c].depth + shift.amount;
1017  const int idx = swizzle.in[is_ya ? 3 * c : c];
1018  comps->min[idx] = Q0;
1019  if (bits < 32) /* FIXME: AVRational is limited to INT_MAX */
1020  comps->max[idx] = Q((1ULL << bits) - 1);
1021  }
1022  }
1023 
1024  /* TODO: handle subsampled or semipacked input formats */
1025  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1026  .op = SWS_OP_READ,
1027  .type = raw_type,
1028  .rw = rw_op,
1029  }));
1030 
1031  if (swapped) {
1032  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1033  .op = SWS_OP_SWAP_BYTES,
1034  .type = raw_type,
1035  }));
1036  }
1037 
1038  if (unpack.pattern[0]) {
1039  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1040  .op = SWS_OP_UNPACK,
1041  .type = raw_type,
1042  .pack = unpack,
1043  }));
1044 
1045  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1046  .op = SWS_OP_CONVERT,
1047  .type = raw_type,
1048  .convert.to = pixel_type,
1049  }));
1050  }
1051 
1052  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1053  .op = SWS_OP_SWIZZLE,
1054  .type = pixel_type,
1055  .swizzle = swizzle,
1056  }));
1057 
1058  if (shift.amount) {
1059  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1060  .op = SWS_OP_RSHIFT,
1061  .type = pixel_type,
1062  .shift = shift,
1063  }));
1064  }
1065 
1066  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1067  .op = SWS_OP_CLEAR,
1068  .type = pixel_type,
1069  .clear = fmt_clear(fmt),
1070  }));
1071 
1072  return 0;
1073 }
1074 
1075 int ff_sws_encode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
1076 {
1077  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
1078  SwsPixelType pixel_type, raw_type;
1079  SwsReadWriteOp rw_op;
1080  SwsSwizzleOp swizzle;
1081  SwsPackOp pack;
1082  SwsShiftOp shift;
1083 
1084  RET(fmt_analyze(fmt, &rw_op, &pack, &swizzle, &shift,
1085  &pixel_type, &raw_type));
1086 
1087  if (shift.amount) {
1088  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1089  .op = SWS_OP_LSHIFT,
1090  .type = pixel_type,
1091  .shift = shift,
1092  }));
1093  }
1094 
1095  if (rw_op.elems > desc->nb_components) {
1096  /* Format writes unused alpha channel, clear it explicitly for sanity */
1097  av_assert1(!(desc->flags & AV_PIX_FMT_FLAG_ALPHA));
1098  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1099  .op = SWS_OP_CLEAR,
1100  .type = pixel_type,
1101  .clear.mask = SWS_COMP(3),
1102  .clear.value[3] = Q0,
1103  }));
1104  }
1105 
1106  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1107  .op = SWS_OP_SWIZZLE,
1108  .type = pixel_type,
1109  .swizzle = swizzle,
1110  }));
1111 
1112  if (pack.pattern[0]) {
1113  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1114  .op = SWS_OP_CONVERT,
1115  .type = pixel_type,
1116  .convert.to = raw_type,
1117  }));
1118 
1119  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1120  .op = SWS_OP_PACK,
1121  .type = raw_type,
1122  .pack = pack,
1123  }));
1124  }
1125 
1126  if (ff_sws_pixel_type_size(raw_type) > 1 &&
1127  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG) {
1128  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1129  .op = SWS_OP_SWAP_BYTES,
1130  .type = raw_type,
1131  }));
1132  }
1133 
1134  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1135  .op = SWS_OP_WRITE,
1136  .type = raw_type,
1137  .rw = rw_op,
1138  }));
1139 
1140  return 0;
1141 }
1142 
1143 static inline AVRational av_neg_q(AVRational x)
1144 {
1145  return (AVRational) { -x.num, x.den };
1146 }
1147 
1148 static SwsLinearOp fmt_encode_range(const SwsFormat *fmt, bool *incomplete)
1149 {
1150  SwsLinearOp c = { .m = {
1151  { Q1, Q0, Q0, Q0, Q0 },
1152  { Q0, Q1, Q0, Q0, Q0 },
1153  { Q0, Q0, Q1, Q0, Q0 },
1154  { Q0, Q0, Q0, Q1, Q0 },
1155  }};
1156 
1157  const int depth0 = fmt->desc->comp[0].depth;
1158  const int depth1 = fmt->desc->comp[1].depth;
1159  const int depth2 = fmt->desc->comp[2].depth;
1160  const int depth3 = fmt->desc->comp[3].depth;
1161 
1162  if (fmt->desc->flags & AV_PIX_FMT_FLAG_FLOAT)
1163  return c; /* floats are directly output as-is */
1164 
1165  av_assert0(depth0 < 32 && depth1 < 32 && depth2 < 32 && depth3 < 32);
1166  if (fmt->csp == AVCOL_SPC_RGB || (fmt->desc->flags & AV_PIX_FMT_FLAG_XYZ)) {
1167  c.m[0][0] = Q((1 << depth0) - 1);
1168  c.m[1][1] = Q((1 << depth1) - 1);
1169  c.m[2][2] = Q((1 << depth2) - 1);
1170  } else if (fmt->range == AVCOL_RANGE_JPEG) {
1171  /* Full range YUV */
1172  c.m[0][0] = Q((1 << depth0) - 1);
1173  if (fmt->desc->nb_components >= 3) {
1174  /* This follows the ITU-R convention, which is slightly different
1175  * from the JFIF convention. */
1176  c.m[1][1] = Q((1 << depth1) - 1);
1177  c.m[2][2] = Q((1 << depth2) - 1);
1178  c.m[1][4] = Q(1 << (depth1 - 1));
1179  c.m[2][4] = Q(1 << (depth2 - 1));
1180  }
1181  } else {
1182  /* Limited range YUV */
1183  if (fmt->range == AVCOL_RANGE_UNSPECIFIED)
1184  *incomplete = true;
1185  c.m[0][0] = Q(219 << (depth0 - 8));
1186  c.m[0][4] = Q( 16 << (depth0 - 8));
1187  if (fmt->desc->nb_components >= 3) {
1188  c.m[1][1] = Q(224 << (depth1 - 8));
1189  c.m[2][2] = Q(224 << (depth2 - 8));
1190  c.m[1][4] = Q(128 << (depth1 - 8));
1191  c.m[2][4] = Q(128 << (depth2 - 8));
1192  }
1193  }
1194 
1195  if (fmt->desc->flags & AV_PIX_FMT_FLAG_ALPHA) {
1196  const bool is_ya = fmt->desc->nb_components == 2;
1197  c.m[3][3] = Q((1 << (is_ya ? depth1 : depth3)) - 1);
1198  }
1199 
1200  if (fmt->format == AV_PIX_FMT_MONOWHITE) {
1201  /* This format is inverted, 0 = white, 1 = black */
1202  c.m[0][4] = av_add_q(c.m[0][4], c.m[0][0]);
1203  c.m[0][0] = av_neg_q(c.m[0][0]);
1204  }
1205 
1206  c.mask = ff_sws_linear_mask(c);
1207  return c;
1208 }
1209 
1210 static SwsLinearOp fmt_decode_range(const SwsFormat *fmt, bool *incomplete)
1211 {
1212  SwsLinearOp c = fmt_encode_range(fmt, incomplete);
1213 
1214  /* Invert main diagonal + offset: x = s * y + k ==> y = (x - k) / s */
1215  for (int i = 0; i < 4; i++) {
1216  av_assert1(c.m[i][i].num);
1217  c.m[i][i] = av_inv_q(c.m[i][i]);
1218  c.m[i][4] = av_mul_q(c.m[i][4], av_neg_q(c.m[i][i]));
1219  }
1220 
1221  /* Explicitly initialize alpha for sanity */
1222  if (!(fmt->desc->flags & AV_PIX_FMT_FLAG_ALPHA))
1223  c.m[3][4] = Q1;
1224 
1225  c.mask = ff_sws_linear_mask(c);
1226  return c;
1227 }
1228 
1229 static AVRational *generate_bayer_matrix(const int size_log2)
1230 {
1231  const int size = 1 << size_log2;
1232  const int num_entries = size * size;
1233  AVRational *m = av_refstruct_allocz(sizeof(*m) * num_entries);
1234  av_assert1(size_log2 < 16);
1235  if (!m)
1236  return NULL;
1237 
1238  /* Start with a 1x1 matrix */
1239  m[0] = Q0;
1240 
1241  /* Generate three copies of the current, appropriately scaled and offset */
1242  for (int sz = 1; sz < size; sz <<= 1) {
1243  const int den = 4 * sz * sz;
1244  for (int y = 0; y < sz; y++) {
1245  for (int x = 0; x < sz; x++) {
1246  const AVRational cur = m[y * size + x];
1247  m[(y + sz) * size + x + sz] = av_add_q(cur, av_make_q(1, den));
1248  m[(y ) * size + x + sz] = av_add_q(cur, av_make_q(2, den));
1249  m[(y + sz) * size + x ] = av_add_q(cur, av_make_q(3, den));
1250  }
1251  }
1252  }
1253 
1254  /**
1255  * To correctly round, we need to evenly distribute the result on [0, 1),
1256  * giving an average value of 1/2.
1257  *
1258  * After the above construction, we have a matrix with average value:
1259  * [ 0/N + 1/N + 2/N + ... (N-1)/N ] / N = (N-1)/(2N)
1260  * where N = size * size is the total number of entries.
1261  *
1262  * To make the average value equal to 1/2 = N/(2N), add a bias of 1/(2N).
1263  */
1264  for (int i = 0; i < num_entries; i++)
1265  m[i] = av_add_q(m[i], av_make_q(1, 2 * num_entries));
1266 
1267  return m;
1268 }
1269 
1270 static bool trc_is_hdr(enum AVColorTransferCharacteristic trc)
1271 {
1272  static_assert(AVCOL_TRC_NB == 19, "Update this list when adding TRCs");
1273  static_assert(AVCOL_TRC_EXT_NB == 257, "Update this list when adding TRCs");
1274  switch (trc) {
1275  case AVCOL_TRC_LOG:
1276  case AVCOL_TRC_LOG_SQRT:
1277  case AVCOL_TRC_V_LOG:
1278  case AVCOL_TRC_SMPTEST2084:
1279  case AVCOL_TRC_ARIB_STD_B67:
1280  return true;
1281  default:
1282  return false;
1283  }
1284 }
1285 
1286 static int fmt_dither(SwsContext *ctx, SwsOpList *ops,
1287  const SwsPixelType type,
1288  const SwsFormat *src, const SwsFormat *dst)
1289 {
1290  SwsDither mode = ctx->dither;
1291  SwsDitherOp dither;
1292  const int bpc = dst->desc->comp[0].depth;
1293 
1294  if (mode == SWS_DITHER_AUTO) {
1295  /* Visual threshold of perception: 12 bits for SDR, 14 bits for HDR */
1296  const int jnd_bits = trc_is_hdr(dst->color.trc) ? 14 : 12;
1297  mode = bpc >= jnd_bits ? SWS_DITHER_NONE : SWS_DITHER_BAYER;
1298  }
1299 
1300  switch (mode) {
1301  case SWS_DITHER_NONE:
1302  if (ctx->flags & SWS_ACCURATE_RND) {
1303  /* Add constant 0.5 for correct rounding */
1304  AVRational *bias = av_refstruct_allocz(sizeof(*bias));
1305  if (!bias)
1306  return AVERROR(ENOMEM);
1307  *bias = (AVRational) {1, 2};
1308  return ff_sws_op_list_append(ops, &(SwsOp) {
1309  .op = SWS_OP_DITHER,
1310  .type = type,
1311  .dither.matrix = bias,
1312  .dither.min = *bias,
1313  .dither.max = *bias,
1314  });
1315  } else {
1316  return 0; /* No-op */
1317  }
1318  case SWS_DITHER_BAYER:
1319  /* Hardcode 16x16 matrix for now; in theory we could adjust this
1320  * based on the expected level of precision in the output, since lower
1321  * bit depth outputs can suffice with smaller dither matrices; however
1322  * in practice we probably want to use error diffusion for such low bit
1323  * depths anyway */
1324  dither.size_log2 = 4;
1325  dither.matrix = generate_bayer_matrix(dither.size_log2);
1326  if (!dither.matrix)
1327  return AVERROR(ENOMEM);
1328 
1329  const int size = 1 << dither.size_log2;
1330  dither.min = dither.max = dither.matrix[0];
1331  for (int i = 1; i < size * size; i++) {
1332  if (av_cmp_q(dither.min, dither.matrix[i]) > 0)
1333  dither.min = dither.matrix[i];
1334  if (av_cmp_q(dither.matrix[i], dither.max) > 0)
1335  dither.max = dither.matrix[i];
1336  }
1337 
1338  /* Brute-forced offsets; minimizes quantization error across a 16x16
1339  * bayer dither pattern for standard RGBA and YUVA pixel formats */
1340  const int offsets_16x16[4] = {0, 3, 2, 5};
1341  for (int i = 0; i < 4; i++) {
1342  av_assert0(offsets_16x16[i] <= INT8_MAX);
1343  dither.y_offset[i] = offsets_16x16[i];
1344  }
1345 
1346  if (src->desc->nb_components < 3 && bpc >= 8) {
1347  /**
1348  * For high-bit-depth sources without chroma, use same matrix
1349  * offset for all color channels. This prevents introducing color
1350  * noise in grayscale images; and also allows optimizing the dither
1351  * operation. Skipped for low bit depth (<8 bpc) as the loss in
1352  * PSNR, from the inability to diffuse error among all three
1353  * channels, can be substantial.
1354  *
1355  * This shifts: { X, Y, Z, W } -> { X, X, X, Y }
1356  */
1357  dither.y_offset[3] = dither.y_offset[1];
1358  dither.y_offset[1] = dither.y_offset[2] = dither.y_offset[0];
1359  }
1360 
1361  return ff_sws_op_list_append(ops, &(SwsOp) {
1362  .op = SWS_OP_DITHER,
1363  .type = type,
1364  .dither = dither,
1365  });
1366  case SWS_DITHER_ED:
1367  case SWS_DITHER_A_DITHER:
1368  case SWS_DITHER_X_DITHER:
1369  return AVERROR(ENOTSUP);
1370 
1371  case SWS_DITHER_NB:
1372  break;
1373  }
1374 
1375  av_unreachable("Invalid dither mode");
1376  return AVERROR(EINVAL);
1377 }
1378 
1379 static inline SwsLinearOp
1380 linear_mat3(const AVRational m00, const AVRational m01, const AVRational m02,
1381  const AVRational m10, const AVRational m11, const AVRational m12,
1382  const AVRational m20, const AVRational m21, const AVRational m22)
1383 {
1384  SwsLinearOp c = {{
1385  { m00, m01, m02, Q0, Q0 },
1386  { m10, m11, m12, Q0, Q0 },
1387  { m20, m21, m22, Q0, Q0 },
1388  { Q0, Q0, Q0, Q1, Q0 },
1389  }};
1390 
1391  c.mask = ff_sws_linear_mask(c);
1392  return c;
1393 }
1394 
1395 int ff_sws_decode_colors(SwsContext *ctx, SwsPixelType type,
1396  SwsOpList *ops, const SwsFormat *fmt, bool *incomplete)
1397 {
1398  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(fmt->csp);
1399  const SwsPixelType pixel_type = fmt_pixel_type(fmt->format);
1400  if (!pixel_type)
1401  return AVERROR(ENOTSUP);
1402 
1403  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1404  .op = SWS_OP_CONVERT,
1405  .type = pixel_type,
1406  .convert.to = type,
1407  }));
1408 
1409  /* Decode pixel format into standardized range */
1410  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1411  .type = type,
1412  .op = SWS_OP_LINEAR,
1413  .lin = fmt_decode_range(fmt, incomplete),
1414  }));
1415 
1416  /* Final step, decode colorspace */
1417  switch (fmt->csp) {
1418  case AVCOL_SPC_RGB:
1419  return 0;
1420  case AVCOL_SPC_UNSPECIFIED:
1421  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1422  *incomplete = true;
1423  av_fallthrough;
1424  case AVCOL_SPC_FCC:
1425  case AVCOL_SPC_BT470BG:
1426  case AVCOL_SPC_SMPTE170M:
1427  case AVCOL_SPC_BT709:
1428  case AVCOL_SPC_SMPTE240M:
1429  case AVCOL_SPC_BT2020_NCL: {
1430  AVRational crg = av_sub_q(Q0, av_div_q(c->cr, c->cg));
1431  AVRational cbg = av_sub_q(Q0, av_div_q(c->cb, c->cg));
1432  AVRational m02 = av_mul_q(Q(2), av_sub_q(Q1, c->cr));
1433  AVRational m21 = av_mul_q(Q(2), av_sub_q(Q1, c->cb));
1434  AVRational m11 = av_mul_q(cbg, m21);
1435  AVRational m12 = av_mul_q(crg, m02);
1436 
1437  return ff_sws_op_list_append(ops, &(SwsOp) {
1438  .type = type,
1439  .op = SWS_OP_LINEAR,
1440  .lin = linear_mat3(
1441  Q1, Q0, m02,
1442  Q1, m11, m12,
1443  Q1, m21, Q0
1444  ),
1445  });
1446  }
1447 
1448  case AVCOL_SPC_YCGCO:
1449  return ff_sws_op_list_append(ops, &(SwsOp) {
1450  .type = type,
1451  .op = SWS_OP_LINEAR,
1452  .lin = linear_mat3(
1453  Q1, Q(-1), Q( 1),
1454  Q1, Q( 1), Q( 0),
1455  Q1, Q(-1), Q(-1)
1456  ),
1457  });
1458 
1459  case AVCOL_SPC_BT2020_CL:
1460  case AVCOL_SPC_SMPTE2085:
1461  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1462  case AVCOL_SPC_CHROMA_DERIVED_CL:
1463  case AVCOL_SPC_ICTCP:
1464  case AVCOL_SPC_IPT_C2:
1465  case AVCOL_SPC_YCGCO_RE:
1466  case AVCOL_SPC_YCGCO_RO:
1467  return AVERROR(ENOTSUP);
1468 
1469  case AVCOL_SPC_RESERVED:
1470  return AVERROR(EINVAL);
1471 
1472  case AVCOL_SPC_NB:
1473  break;
1474  }
1475 
1476  av_unreachable("Corrupt AVColorSpace value?");
1477  return AVERROR(EINVAL);
1478 }
1479 
1480 int ff_sws_encode_colors(SwsContext *ctx, SwsPixelType type,
1481  SwsOpList *ops, const SwsFormat *src,
1482  const SwsFormat *dst, bool *incomplete)
1483 {
1484  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(dst->csp);
1485  const SwsPixelType pixel_type = fmt_pixel_type(dst->format);
1486  if (!pixel_type)
1487  return AVERROR(ENOTSUP);
1488 
1489  switch (dst->csp) {
1490  case AVCOL_SPC_RGB:
1491  break;
1492  case AVCOL_SPC_UNSPECIFIED:
1493  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1494  *incomplete = true;
1495  av_fallthrough;
1496  case AVCOL_SPC_FCC:
1497  case AVCOL_SPC_BT470BG:
1498  case AVCOL_SPC_SMPTE170M:
1499  case AVCOL_SPC_BT709:
1500  case AVCOL_SPC_SMPTE240M:
1501  case AVCOL_SPC_BT2020_NCL: {
1502  AVRational cb1 = av_sub_q(c->cb, Q1);
1503  AVRational cr1 = av_sub_q(c->cr, Q1);
1504  AVRational m20 = av_make_q(1,2);
1505  AVRational m10 = av_mul_q(m20, av_div_q(c->cr, cb1));
1506  AVRational m11 = av_mul_q(m20, av_div_q(c->cg, cb1));
1507  AVRational m21 = av_mul_q(m20, av_div_q(c->cg, cr1));
1508  AVRational m22 = av_mul_q(m20, av_div_q(c->cb, cr1));
1509 
1510  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1511  .type = type,
1512  .op = SWS_OP_LINEAR,
1513  .lin = linear_mat3(
1514  c->cr, c->cg, c->cb,
1515  m10, m11, m20,
1516  m20, m21, m22
1517  ),
1518  }));
1519  break;
1520  }
1521 
1522  case AVCOL_SPC_YCGCO:
1523  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1524  .type = type,
1525  .op = SWS_OP_LINEAR,
1526  .lin = linear_mat3(
1527  av_make_q( 1, 4), av_make_q(1, 2), av_make_q( 1, 4),
1528  av_make_q( 1, 2), av_make_q(0, 1), av_make_q(-1, 2),
1529  av_make_q(-1, 4), av_make_q(1, 2), av_make_q(-1, 4)
1530  ),
1531  }));
1532  break;
1533 
1534  case AVCOL_SPC_BT2020_CL:
1535  case AVCOL_SPC_SMPTE2085:
1536  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1537  case AVCOL_SPC_CHROMA_DERIVED_CL:
1538  case AVCOL_SPC_ICTCP:
1539  case AVCOL_SPC_IPT_C2:
1540  case AVCOL_SPC_YCGCO_RE:
1541  case AVCOL_SPC_YCGCO_RO:
1542  return AVERROR(ENOTSUP);
1543 
1544  case AVCOL_SPC_RESERVED:
1545  case AVCOL_SPC_NB:
1546  return AVERROR(EINVAL);
1547  }
1548 
1549  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1550  .type = type,
1551  .op = SWS_OP_LINEAR,
1552  .lin = fmt_encode_range(dst, incomplete),
1553  }));
1554 
1555  if (!(dst->desc->flags & AV_PIX_FMT_FLAG_FLOAT)) {
1556  SwsClampOp range = {0};
1557 
1558  const bool is_ya = dst->desc->nb_components == 2;
1559  for (int i = 0; i < dst->desc->nb_components; i++) {
1560  /* Clamp to legal pixel range */
1561  const int idx = i * (is_ya ? 3 : 1);
1562  range.limit[idx] = Q((1 << dst->desc->comp[i].depth) - 1);
1563  }
1564 
1565  RET(fmt_dither(ctx, ops, type, src, dst));
1566  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1567  .op = SWS_OP_MAX,
1568  .type = type,
1569  .clamp = {{ Q0, Q0, Q0, Q0 }},
1570  }));
1571 
1572  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1573  .op = SWS_OP_MIN,
1574  .type = type,
1575  .clamp = range,
1576  }));
1577  }
1578 
1579  return ff_sws_op_list_append(ops, &(SwsOp) {
1580  .type = type,
1581  .op = SWS_OP_CONVERT,
1582  .convert.to = pixel_type,
1583  });
1584 }
1585 
1586 static SwsScaler get_scaler_fallback(SwsContext *ctx)
1587 {
1588  if (ctx->scaler != SWS_SCALE_AUTO)
1589  return ctx->scaler;
1590 
1591  /* Backwards compatibility with legacy flags API */
1592  if (ctx->flags & SWS_BILINEAR) {
1593  return SWS_SCALE_BILINEAR;
1594  } else if (ctx->flags & (SWS_BICUBIC | SWS_BICUBLIN)) {
1595  return SWS_SCALE_BICUBIC;
1596  } else if (ctx->flags & SWS_POINT) {
1597  return SWS_SCALE_POINT;
1598  } else if (ctx->flags & SWS_AREA) {
1599  return SWS_SCALE_AREA;
1600  } else if (ctx->flags & SWS_GAUSS) {
1601  return SWS_SCALE_GAUSSIAN;
1602  } else if (ctx->flags & SWS_SINC) {
1603  return SWS_SCALE_SINC;
1604  } else if (ctx->flags & SWS_LANCZOS) {
1605  return SWS_SCALE_LANCZOS;
1606  } else if (ctx->flags & SWS_SPLINE) {
1607  return SWS_SCALE_SPLINE;
1608  } else {
1609  return SWS_SCALE_AUTO;
1610  }
1611 }
1612 
1613 static int add_filter(SwsContext *ctx, SwsPixelType type, SwsOpList *ops,
1614  SwsOpType filter, int src_size, int dst_size)
1615 {
1616  if (src_size == dst_size)
1617  return 0; /* no-op */
1618 
1619  SwsFilterParams params = {
1620  .scaler = get_scaler_fallback(ctx),
1621  .src_size = src_size,
1622  .dst_size = dst_size,
1623  };
1624 
1625  for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
1626  params.scaler_params[i] = ctx->scaler_params[i];
1627 
1628  SwsFilterWeights *kernel;
1629  int ret = ff_sws_filter_generate(ctx, &params, &kernel);
1630  if (ret == AVERROR(ENOTSUP)) {
1631  /* Filter size exceeds limit; cascade with geometric mean size */
1632  int mean = sqrt((int64_t) src_size * dst_size);
1633  if (mean == src_size || mean == dst_size)
1634  return AVERROR_BUG; /* sanity, prevent infinite loop */
1635  ret = add_filter(ctx, type, ops, filter, src_size, mean);
1636  if (ret < 0)
1637  return ret;
1638  return add_filter(ctx, type, ops, filter, mean, dst_size);
1639  } else if (ret < 0) {
1640  return ret;
1641  }
1642 
1643  return ff_sws_op_list_append(ops, &(SwsOp) {
1644  .type = type,
1645  .op = filter,
1646  .filter.kernel = kernel,
1647  .filter.type = type,
1648  });
1649 }
1650 
1651 int ff_sws_add_filters(SwsContext *ctx, SwsPixelType type, SwsOpList *ops,
1652  const SwsFormat *src, const SwsFormat *dst)
1653 {
1654  /**
1655  * Always perform horizontal scaling first, since it's much more likely to
1656  * benefit from small integer optimizations; we should maybe flip the order
1657  * here if we're downscaling the vertical resolution by a lot, though.
1658  */
1659  int ret = add_filter(ctx, type, ops, SWS_OP_FILTER_H, src->width, dst->width);
1660  if (ret < 0)
1661  return ret;
1662 
1663  return add_filter(ctx, type, ops, SWS_OP_FILTER_V, src->height, dst->height);
1664 }
1665 
1666 int ff_sws_op_list_generate(SwsContext *ctx, const SwsFormat *src,
1667  const SwsFormat *dst, SwsOpList **out_ops,
1668  bool *incomplete)
1669 {
1670  /* The new code does not yet support alpha blending */
1671  if (src->desc->flags & AV_PIX_FMT_FLAG_ALPHA &&
1672  ctx->alpha_blend != SWS_ALPHA_BLEND_NONE)
1673  return AVERROR(ENOTSUP);
1674 
1675  SwsOpList *ops = ff_sws_op_list_alloc();
1676  if (!ops)
1677  return AVERROR(ENOMEM);
1678  ops->src = *src;
1679  ops->dst = *dst;
1680 
1681  const SwsPixelType type = SWS_PIXEL_F32;
1682  int ret = ff_sws_decode_pixfmt(ops, src->format);
1683  if (ret < 0)
1684  goto fail;
1685  ret = ff_sws_decode_colors(ctx, type, ops, src, incomplete);
1686  if (ret < 0)
1687  goto fail;
1688  ret = ff_sws_add_filters(ctx, type, ops, src, dst);
1689  if (ret < 0)
1690  goto fail;
1691  ret = ff_sws_encode_colors(ctx, type, ops, src, dst, incomplete);
1692  if (ret < 0)
1693  goto fail;
1694  ret = ff_sws_encode_pixfmt(ops, dst->format);
1695  if (ret < 0)
1696  goto fail;
1697 
1698  *out_ops = ops;
1699  return 0;
1700 
1701 fail:
1702  ff_sws_op_list_free(&ops);
1703  return ret;
1704 }
1705 
1706 #else /* !CONFIG_UNSTABLE */
1707 
1708 static int test_format_ops(enum AVPixelFormat format, int output)
1709 {
1710  return 0;
1711 }
1712 
1713 #endif
AVCOL_PRI_RESERVED
@ AVCOL_PRI_RESERVED
Definition: pixfmt.h:640
SWS_OP_READ
@ SWS_OP_READ
Definition: ops.h:38
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
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
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
ff_sws_op_list_free
void ff_sws_op_list_free(SwsOpList **p_ops)
Definition: ops.c:637
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:41
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
ff_sws_op_list_alloc
SwsOpList * ff_sws_op_list_alloc(void)
Definition: ops.c:624
SWS_SCALE_AUTO
@ SWS_SCALE_AUTO
Definition: swscale.h:97
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:46
SWS_OP_UNPACK
@ SWS_OP_UNPACK
Definition: ops.h:44
SwsClearOp
Definition: ops.h:155
SWS_RW_PLANAR
@ SWS_RW_PLANAR
Note: 1-component reads are either SWS_RW_PLANAR or SWS_RW_PACKED, depending on the underlying interp...
Definition: ops.h:97
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:300
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
SWS_PIXEL_NONE
@ SWS_PIXEL_NONE
Definition: uops.h:39
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:50
SWS_SCALE_BILINEAR
@ SWS_SCALE_BILINEAR
bilinear filtering
Definition: swscale.h:98
ff_sws_linear_mask
uint32_t ff_sws_linear_mask(const SwsLinearOp c)
Definition: ops.c:776
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:144
AVMasteringDisplayMetadata::has_luminance
int has_luminance
Flag indicating whether the luminance (min_ and max_) have been set.
Definition: mastering_display_metadata.h:67
int64_t
long long int64_t
Definition: coverity.c:34
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:731
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:71
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:466
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:58
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
SwsFilterWeights
Represents a computed filter kernel.
Definition: filters.h:64
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_BILINEAR
@ SWS_BILINEAR
bilinear filtering
Definition: swscale.h:200
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:606
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
filter
void(* filter)(uint8_t *src, int stride, int qscale)
Definition: h263dsp.c:29
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
SwsFilterParams
Definition: filters.h:45
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
SWS_BICUBLIN
@ SWS_BICUBLIN
bicubic luma, bilinear chroma
Definition: swscale.h:205
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
SWS_ALPHA_BLEND_NONE
@ SWS_ALPHA_BLEND_NONE
Definition: swscale.h:89
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 by any backend, excluding unstable backends.
Definition: format.c:578
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
ff_sws_filter_generate
int ff_sws_filter_generate(void *log, const SwsFilterParams *params, SwsFilterWeights **out)
Generate a filter kernel for the given parameters.
Definition: filters.c:187
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
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:84
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:144
sanitize_fmt
static void sanitize_fmt(SwsFormat *fmt, const AVPixFmtDescriptor *desc)
Definition: format.c:309
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:173
test_format_legacy
static int test_format_legacy(enum AVPixelFormat format, int output)
Definition: format.c:559
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
SwsReadWriteOp
Definition: ops.h:101
SwsSwizzleOp
Definition: ops.h:136
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
SWS_BACKEND_LEGACY
@ SWS_BACKEND_LEGACY
Legacy bespoke format-specific code.
Definition: swscale.h:112
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
SWS_RW_PACKED
@ SWS_RW_PACKED
Definition: ops.h:98
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:221
SwsBackend
SwsBackend
Definition: swscale.h:110
SWS_SCALE_BICUBIC
@ SWS_SCALE_BICUBIC
2-tap cubic BC-spline
Definition: swscale.h:99
ff_sws_add_filters
int ff_sws_add_filters(SwsContext *ctx, SwsPixelType type, SwsOpList *ops, const SwsFormat *src, const SwsFormat *dst)
Append a set of operations for scaling pixels to a different resolution.
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
ff_sws_op_list_generate
int ff_sws_op_list_generate(SwsContext *ctx, const SwsFormat *src, const SwsFormat *dst, SwsOpList **out_ops, bool *incomplete)
Generate an SwsOpList defining a conversion from src to dst.
SWS_AREA
@ SWS_AREA
area averaging
Definition: swscale.h:204
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_SCALE_LANCZOS
@ SWS_SCALE_LANCZOS
3-tap sinc/sinc
Definition: swscale.h:104
SWS_SWIZZLE
#define SWS_SWIZZLE(X, Y, Z, W)
Definition: ops.h:148
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:1465
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:84
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
test_format_ops
static int test_format_ops(enum AVPixelFormat format, int output)
Definition: format.c:1708
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:52
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:589
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
SWS_BACKEND_ALL
@ SWS_BACKEND_ALL
Definition: swscale.h:129
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:57
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
SWS_OP_FILTER_H
@ SWS_OP_FILTER_H
Definition: ops.h:61
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_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:45
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
fail
#define fail
Definition: test.h:478
test_range
static int test_range(enum AVColorRange range)
Definition: format.c:620
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
SWS_BACKEND_STABLE
@ SWS_BACKEND_STABLE
Definition: swscale.h:113
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
SWS_BICUBIC
@ SWS_BICUBIC
2-tap cubic B-spline
Definition: swscale.h:201
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:655
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
av_fallthrough
#define av_fallthrough
Definition: attributes.h:67
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 by any backend, excluding unstable backends.
Definition: format.c:573
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
SWS_OP_FILTER_V
@ SWS_OP_FILTER_V
Definition: ops.h:62
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
SwsScaler
SwsScaler
Definition: swscale.h:96
FIELD_TOP
@ FIELD_TOP
Definition: format.h:56
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
SwsOpType
SwsOpType
Copyright (C) 2025 Niklas Haas.
Definition: ops.h:34
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
attributes.h
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
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
SwsPixelType
SwsPixelType
Definition: uops.h:38
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
SWS_SCALE_SINC
@ SWS_SCALE_SINC
unwindowed sinc
Definition: swscale.h:103
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:133
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:625
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:165
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:151
SWS_POINT
@ SWS_POINT
nearest neighbor
Definition: swscale.h:203
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:47
SWS_SPLINE
@ SWS_SPLINE
unwindowed natural cubic spline
Definition: swscale.h:209
SwsOpList::src
SwsFormat src
Definition: ops.h:286
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:323
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:39
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
SWS_COMP
#define SWS_COMP(X)
Definition: uops.h:70
SWS_PIXEL_U32
@ SWS_PIXEL_U32
Definition: uops.h:42
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
ff_sws_test_pixfmt_backend
int ff_sws_test_pixfmt_backend(const SwsBackend backends, enum AVPixelFormat format, int output)
Definition: format.c:564
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:613
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
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:180
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
add_filter
static int add_filter(AudioNEqualizerContext *s, AVFilterLink *inlink)
Definition: af_anequalizer.c:539
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
ff_test_fmt
int ff_test_fmt(const SwsBackend backends, const SwsFormat *fmt, int output)
Statically test if a given format is supported by the given set of backends.
Definition: format.c:630
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
SWS_SCALE_POINT
@ SWS_SCALE_POINT
nearest neighbor (point sampling)
Definition: swscale.h:100
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:128
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
SWS_PIXEL_U8
@ SWS_PIXEL_U8
Definition: uops.h:40
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
SwsFilterParams::scaler_params
double scaler_params[SWS_NUM_SCALER_PARAMS]
Definition: filters.h:50
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
SwsReadWriteMode
SwsReadWriteMode
Definition: ops.h:87
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:642
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:226
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:689
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
SWS_SCALE_GAUSSIAN
@ SWS_SCALE_GAUSSIAN
2-tap gaussian approximation
Definition: swscale.h:102
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:80
ret
ret
Definition: filter_design.txt:187
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
SwsOpList::dst
SwsFormat dst
Definition: ops.h:286
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:53
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:79
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_NUM_SCALER_PARAMS
#define SWS_NUM_SCALER_PARAMS
Extra parameters for fine-tuning certain scalers.
Definition: swscale.h:247
mode
mode
Definition: ebur128.h:83
SWS_COMP_SWAPPED
@ SWS_COMP_SWAPPED
Definition: ops.h:76
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:144
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:40
SwsFormat::hw_format
enum AVPixelFormat hw_format
Definition: format.h:81
SwsFormat::color
SwsColor color
Definition: format.h:86
SWS_SCALE_SPLINE
@ SWS_SCALE_SPLINE
unwindowned natural cubic spline
Definition: swscale.h:105
SWS_GAUSS
@ SWS_GAUSS
gaussian approximation
Definition: swscale.h:206
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
mean
static float mean(const float *input, int size)
Definition: vf_nnedi.c:861
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:144
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:74
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
Definition: ops.h:111
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:321
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
SWS_PIXEL_F32
@ SWS_PIXEL_F32
Definition: uops.h:43
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:143
SWS_OP_CONVERT
@ SWS_OP_CONVERT
Definition: ops.h:51
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
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:52
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
SWS_SCALE_AREA
@ SWS_SCALE_AREA
area averaging
Definition: swscale.h:101
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:179
SWS_LANCZOS
@ SWS_LANCZOS
3-tap sinc/sinc
Definition: swscale.h:208
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:281
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
SWS_SINC
@ SWS_SINC
unwindowed sinc
Definition: swscale.h:207
SwsContext
Main external API structure.
Definition: swscale.h:229
SWS_PIXEL_U16
@ SWS_PIXEL_U16
Definition: uops.h:41
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
SwsFilterParams::scaler
SwsScaler scaler
The filter kernel and parameters to use.
Definition: filters.h:49
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:669
Generated on Wed Jun 17 2026 19:23:33 for FFmpeg by   doxygen 1.8.17