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  fmt.field = field;
392  }
393 
394  /* Set luminance and gamut information */
395  fmt.color.min_luma = av_make_q(0, 1);
396  switch (fmt.color.trc) {
397  case AVCOL_TRC_SMPTE2084:
398  fmt.color.max_luma = av_make_q(10000, 1); break;
399  case AVCOL_TRC_ARIB_STD_B67:
400  fmt.color.max_luma = av_make_q( 1000, 1); break; /* HLG reference display */
401  default:
402  fmt.color.max_luma = av_make_q( 203, 1); break; /* SDR reference brightness */
403  }
404 
405  primaries = av_csp_primaries_desc_from_id(fmt.color.prim);
406  if (primaries)
407  fmt.color.gamut = primaries->prim;
408 
409  if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA))) {
410  const AVMasteringDisplayMetadata *mdm = (const AVMasteringDisplayMetadata *) sd->data;
411  if (mdm->has_luminance) {
412  fmt.color.min_luma = mdm->min_luminance;
413  fmt.color.max_luma = mdm->max_luminance;
414  }
415 
416  if (mdm->has_primaries) {
417  /* Ignore mastering display white point as it has no bearance on
418  * the underlying content */
419  fmt.color.gamut.r.x = mdm->display_primaries[0][0];
420  fmt.color.gamut.r.y = mdm->display_primaries[0][1];
421  fmt.color.gamut.g.x = mdm->display_primaries[1][0];
422  fmt.color.gamut.g.y = mdm->display_primaries[1][1];
423  fmt.color.gamut.b.x = mdm->display_primaries[2][0];
424  fmt.color.gamut.b.y = mdm->display_primaries[2][1];
425  }
426  }
427 
428  if ((sd = av_frame_get_side_data(frame, AV_FRAME_DATA_DYNAMIC_HDR_PLUS))) {
429  const AVDynamicHDRPlus *dhp = (const AVDynamicHDRPlus *) sd->data;
430  const AVHDRPlusColorTransformParams *pars = &dhp->params[0];
431  const AVRational nits = av_make_q(10000, 1);
432  AVRational maxrgb = pars->maxscl[0];
433 
434  if (!dhp->num_windows || dhp->application_version > 1)
435  goto skip_hdr10;
436 
437  /* Maximum of MaxSCL components */
438  if (av_cmp_q(pars->maxscl[1], maxrgb) > 0)
439  maxrgb = pars->maxscl[1];
440  if (av_cmp_q(pars->maxscl[2], maxrgb) > 0)
441  maxrgb = pars->maxscl[2];
442 
443  if (maxrgb.num > 0) {
444  /* Estimate true luminance from MaxSCL */
445  const AVLumaCoefficients *luma = av_csp_luma_coeffs_from_avcsp(fmt.csp);
446  if (!luma)
447  goto skip_hdr10;
448  fmt.color.frame_peak = av_add_q(av_mul_q(luma->cr, pars->maxscl[0]),
449  av_add_q(av_mul_q(luma->cg, pars->maxscl[1]),
450  av_mul_q(luma->cb, pars->maxscl[2])));
451  /* Scale the scene average brightness by the ratio between the
452  * maximum luminance and the MaxRGB values */
453  fmt.color.frame_avg = av_mul_q(pars->average_maxrgb,
454  av_div_q(fmt.color.frame_peak, maxrgb));
455  } else {
456  /**
457  * Calculate largest value from histogram to use as fallback for
458  * clips with missing MaxSCL information. Note that this may end
459  * up picking the "reserved" value at the 5% percentile, which in
460  * practice appears to track the brightest pixel in the scene.
461  */
462  for (int i = 0; i < pars->num_distribution_maxrgb_percentiles; i++) {
463  const AVRational pct = pars->distribution_maxrgb[i].percentile;
464  if (av_cmp_q(pct, maxrgb) > 0)
465  maxrgb = pct;
466  fmt.color.frame_peak = maxrgb;
467  fmt.color.frame_avg = pars->average_maxrgb;
468  }
469  }
470 
471  /* Rescale to nits */
472  fmt.color.frame_peak = av_mul_q(nits, fmt.color.frame_peak);
473  fmt.color.frame_avg = av_mul_q(nits, fmt.color.frame_avg);
474  }
475 skip_hdr10:
476 
477  /* PQ is always scaled down to absolute zero, so ignore mastering metadata */
478  if (fmt.color.trc == AVCOL_TRC_SMPTE2084)
479  fmt.color.min_luma = av_make_q(0, 1);
480 
481  return fmt;
482 }
483 
484 void ff_fmt_from_pixfmt(enum AVPixelFormat pixfmt, SwsFormat *fmt)
485 {
486  ff_fmt_clear(fmt);
487  fmt->format = pixfmt;
488  fmt->desc = av_pix_fmt_desc_get(pixfmt);
489  sanitize_fmt(fmt, fmt->desc);
490 }
491 
492 static int infer_prim_ref(SwsColor *csp, const SwsColor *ref)
493 {
494  if (csp->prim != AVCOL_PRI_UNSPECIFIED)
495  return 0;
496 
497  /* Reuse the reference gamut only for "safe", similar primaries */
498  switch (ref->prim) {
499  case AVCOL_PRI_BT709:
500  case AVCOL_PRI_BT470M:
501  case AVCOL_PRI_BT470BG:
502  case AVCOL_PRI_SMPTE170M:
503  case AVCOL_PRI_SMPTE240M:
504  csp->prim = ref->prim;
505  csp->gamut = ref->gamut;
506  break;
507  default:
508  csp->prim = AVCOL_PRI_BT709;
509  csp->gamut = av_csp_primaries_desc_from_id(csp->prim)->prim;
510  break;
511  }
512 
513  return 1;
514 }
515 
516 static int infer_trc_ref(SwsColor *csp, const SwsColor *ref)
517 {
518  if (csp->trc != AVCOL_TRC_UNSPECIFIED)
519  return 0;
520 
521  /* Pick a suitable SDR transfer function, to try and minimize conversions */
522  switch (ref->trc) {
523  case AVCOL_TRC_UNSPECIFIED:
524  /* HDR curves, never default to these */
525  case AVCOL_TRC_SMPTE2084:
526  case AVCOL_TRC_ARIB_STD_B67:
527  csp->trc = AVCOL_TRC_BT709;
528  csp->min_luma = av_make_q(0, 1);
529  csp->max_luma = av_make_q(203, 1);
530  break;
531  default:
532  csp->trc = ref->trc;
533  csp->min_luma = ref->min_luma;
534  csp->max_luma = ref->max_luma;
535  break;
536  }
537 
538  return 1;
539 }
540 
541 bool ff_infer_colors(SwsColor *src, SwsColor *dst)
542 {
543  int incomplete = 0;
544 
545  incomplete |= infer_prim_ref(dst, src);
546  incomplete |= infer_prim_ref(src, dst);
547  av_assert0(src->prim != AVCOL_PRI_UNSPECIFIED);
548  av_assert0(dst->prim != AVCOL_PRI_UNSPECIFIED);
549 
550  incomplete |= infer_trc_ref(dst, src);
551  incomplete |= infer_trc_ref(src, dst);
552  av_assert0(src->trc != AVCOL_TRC_UNSPECIFIED);
553  av_assert0(dst->trc != AVCOL_TRC_UNSPECIFIED);
554 
555  return incomplete;
556 }
557 
558 /* Variant of sws_test_format() for the ops-based code */
559 static int test_format_ops(enum AVPixelFormat format, int output);
560 static int test_format_legacy(enum AVPixelFormat format, int output)
561 {
562  return output ? sws_isSupportedOutput(format) : sws_isSupportedInput(format);
563 }
564 
565 int ff_sws_test_pixfmt_backend(const SwsBackend backends,
566  enum AVPixelFormat format, int output)
567 {
568  /* The only non-ops backend is the legacy backend */
569  const SwsBackend backends_ops = SWS_BACKEND_ALL ^ SWS_BACKEND_LEGACY;
570  return ((backends & SWS_BACKEND_LEGACY) && test_format_legacy(format, output)) ||
571  ((backends & backends_ops) && test_format_ops(format, output));
572 }
573 
574 int sws_test_format(enum AVPixelFormat format, int output)
575 {
576  return ff_sws_test_pixfmt_backend(SWS_BACKEND_STABLE, format, output);
577 }
578 
579 int sws_test_hw_format(enum AVPixelFormat format)
580 {
581  switch (format) {
582  case AV_PIX_FMT_NONE: return 1;
583 #if CONFIG_VULKAN
584  case AV_PIX_FMT_VULKAN: return 1;
585 #endif
586  default: return 0;
587  }
588 }
589 
590 int sws_test_colorspace(enum AVColorSpace csp, int output)
591 {
592  switch (csp) {
593  case AVCOL_SPC_UNSPECIFIED:
594  case AVCOL_SPC_RGB:
595  case AVCOL_SPC_BT709:
596  case AVCOL_SPC_BT470BG:
597  case AVCOL_SPC_SMPTE170M:
598  case AVCOL_SPC_FCC:
599  case AVCOL_SPC_SMPTE240M:
600  case AVCOL_SPC_BT2020_NCL:
601  return 1;
602  default:
603  return 0;
604  }
605 }
606 
607 int sws_test_primaries(enum AVColorPrimaries prim, int output)
608 {
609  return ((prim > AVCOL_PRI_RESERVED0 && prim < AVCOL_PRI_NB) ||
610  (prim >= AVCOL_PRI_EXT_BASE && prim < AVCOL_PRI_EXT_NB)) &&
611  prim != AVCOL_PRI_RESERVED;
612 }
613 
614 int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output)
615 {
616  av_csp_eotf_function eotf = output ? av_csp_itu_eotf_inv(trc)
617  : av_csp_itu_eotf(trc);
618  return trc == AVCOL_TRC_UNSPECIFIED || eotf != NULL;
619 }
620 
621 static int test_range(enum AVColorRange range)
622 {
623  return (unsigned)range < AVCOL_RANGE_NB;
624 }
625 
626 static int test_loc(enum AVChromaLocation loc)
627 {
628  return (unsigned)loc < AVCHROMA_LOC_NB;
629 }
630 
631 int ff_test_fmt(const SwsBackend backends, const SwsFormat *fmt, int output)
632 {
633  return fmt->width > 0 && fmt->height > 0 &&
634  ff_sws_test_pixfmt_backend(backends, fmt->format, output) &&
635  sws_test_colorspace(fmt->csp, output) &&
636  sws_test_primaries (fmt->color.prim, output) &&
637  sws_test_transfer (fmt->color.trc, output) &&
638  sws_test_hw_format (fmt->hw_format) &&
639  test_range (fmt->range) &&
640  test_loc (fmt->loc);
641 }
642 
643 int sws_test_frame(const AVFrame *frame, int output)
644 {
645  for (int field = 0; field < 2; field++) {
646  const SwsFormat fmt = ff_fmt_from_frame(frame, field);
647  if (!ff_test_fmt(SWS_BACKEND_STABLE, &fmt, output))
648  return 0;
649  if (!fmt.interlaced)
650  break;
651  }
652 
653  return 1;
654 }
655 
656 int sws_is_noop(const AVFrame *dst, const AVFrame *src)
657 {
658  for (int field = 0; field < 2; field++) {
659  SwsFormat dst_fmt = ff_fmt_from_frame(dst, field);
660  SwsFormat src_fmt = ff_fmt_from_frame(src, field);
661  if (!ff_fmt_equal(&dst_fmt, &src_fmt))
662  return 0;
663  if (!dst_fmt.interlaced)
664  break;
665  }
666 
667  return 1;
668 }
669 
670 void ff_sws_frame_from_avframe(SwsFrame *dst, const AVFrame *src)
671 {
672  dst->format = src->format;
673  dst->width = src->width;
674  dst->height = src->height;
675  dst->avframe = src;
676  for (int i = 0; i < FF_ARRAY_ELEMS(dst->data); i++) {
677  dst->data[i] = src->data[i];
678  dst->linesize[i] = src->linesize[i];
679  }
680 }
681 
682 #if CONFIG_UNSTABLE
683 
684 /**
685  * Returns the underlying descriptor for fake formats like PAL8 whose
686  * descriptors alone do not fully describe the pixel data.
687  */
688 static inline const AVPixFmtDescriptor *fmt_desc_decoded(enum AVPixelFormat fmt)
689 {
690  if (fmt == AV_PIX_FMT_PAL8)
691  return av_pix_fmt_desc_get(AV_PIX_FMT_RGB32);
692 
693  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
694  av_assert0(!(desc->flags & AV_PIX_FMT_FLAG_PAL));
695  return desc;
696 }
697 
698 /* Returns the type suitable for a pixel after fully decoding/unpacking it */
699 static SwsPixelType fmt_pixel_type(enum AVPixelFormat fmt)
700 {
701  const AVPixFmtDescriptor *desc = fmt_desc_decoded(fmt);
702  const int bits = FFALIGN(desc->comp[0].depth, 8);
703  if (desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
704  switch (bits) {
705  case 32: return SWS_PIXEL_F32;
706  /* TODO: no support for 16-bit float yet */
707  }
708  } else {
709  switch (bits) {
710  case 8: return SWS_PIXEL_U8;
711  case 16: return SWS_PIXEL_U16;
712  /* TODO: AVRational cannot represent UINT32_MAX */
713  }
714  }
715 
716  return SWS_PIXEL_NONE;
717 }
718 
719 /* A regular format is defined as any format that contains only a single
720  * component per elementary data type (i.e. no sub-byte pack/unpack needed),
721  * and whose components map 1:1 onto elementary data units */
722 static int is_regular_fmt(enum AVPixelFormat fmt)
723 {
724  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
725  if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_BAYER))
726  return 0; /* no 1:1 correspondence between components and data units */
727  if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM))
728  return 0; /* bitstream formats are packed by definition */
729  if ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) || desc->nb_components == 1)
730  return 1; /* planar formats are regular by definition */
731 
732  const int step = desc->comp[0].step;
733  int total_bits = 0;
734 
735  for (int i = 0; i < desc->nb_components; i++) {
736  if (desc->comp[i].shift || desc->comp[i].step != step)
737  return 0; /* irregular/packed format */
738  total_bits += desc->comp[i].depth;
739  }
740 
741  /* Exclude formats with missing components like RGB0, 0RGB, etc. */
742  return total_bits == step * 8;
743 }
744 
745 typedef struct FmtInfo {
746  SwsReadWriteOp rw;
747  SwsSwizzleOp swizzle;
748  SwsPackOp pack;
749  int shift;
750 } FmtInfo;
751 
752 #define BITSTREAM_FMT(SWIZ, FRAC, MODE, ...) (FmtInfo) { \
753  .rw = { .elems = 1, .frac = FRAC, .mode = MODE }, \
754  .swizzle = SWIZ, \
755  __VA_ARGS__ \
756 }
757 
758 #define SUBPACKED_FMT(SWIZ, ...) (FmtInfo) { \
759  .rw = { .elems = 1, .mode = SWS_RW_PACKED }, \
760  .swizzle = SWIZ, \
761  .pack.pattern = {__VA_ARGS__}, \
762 }
763 
764 #define PACKED_FMT(SWIZ, N, ...) (FmtInfo) { \
765  .rw = { .elems = N, .mode = SWS_RW_PACKED }, \
766  .swizzle = SWIZ, \
767  __VA_ARGS__ \
768 }
769 
770 #define RGBA SWS_SWIZZLE(0, 1, 2, 3)
771 #define BGRA SWS_SWIZZLE(2, 1, 0, 3)
772 #define ARGB SWS_SWIZZLE(3, 0, 1, 2)
773 #define ABGR SWS_SWIZZLE(3, 2, 1, 0)
774 #define AVYU SWS_SWIZZLE(3, 2, 0, 1)
775 #define VYUA SWS_SWIZZLE(2, 0, 1, 3)
776 #define UYVA SWS_SWIZZLE(1, 0, 2, 3)
777 #define VUYA BGRA
778 
779 static FmtInfo fmt_info_irregular(enum AVPixelFormat fmt)
780 {
781  switch (fmt) {
782  /* Bitstream formats */
783  case AV_PIX_FMT_MONOWHITE:
784  case AV_PIX_FMT_MONOBLACK:
785  return BITSTREAM_FMT(RGBA, 3, SWS_RW_PLANAR);
786  case AV_PIX_FMT_RGB4: return BITSTREAM_FMT(RGBA, 1, SWS_RW_PACKED, .pack = {{ 1, 2, 1 }});
787  case AV_PIX_FMT_BGR4: return BITSTREAM_FMT(BGRA, 1, SWS_RW_PACKED, .pack = {{ 1, 2, 1 }});
788 
789  /* Sub-packed 8-bit aligned formats */
790  case AV_PIX_FMT_RGB4_BYTE: return SUBPACKED_FMT(RGBA, 1, 2, 1);
791  case AV_PIX_FMT_BGR4_BYTE: return SUBPACKED_FMT(BGRA, 1, 2, 1);
792  case AV_PIX_FMT_RGB8: return SUBPACKED_FMT(RGBA, 3, 3, 2);
793  case AV_PIX_FMT_BGR8: return SUBPACKED_FMT(BGRA, 2, 3, 3);
794 
795  /* Sub-packed 16-bit aligned formats */
796  case AV_PIX_FMT_RGB565LE:
797  case AV_PIX_FMT_RGB565BE:
798  return SUBPACKED_FMT(RGBA, 5, 6, 5);
799  case AV_PIX_FMT_BGR565LE:
800  case AV_PIX_FMT_BGR565BE:
801  return SUBPACKED_FMT(BGRA, 5, 6, 5);
802  case AV_PIX_FMT_RGB555LE:
803  case AV_PIX_FMT_RGB555BE:
804  return SUBPACKED_FMT(RGBA, 5, 5, 5);
805  case AV_PIX_FMT_BGR555LE:
806  case AV_PIX_FMT_BGR555BE:
807  return SUBPACKED_FMT(BGRA, 5, 5, 5);
808  case AV_PIX_FMT_RGB444LE:
809  case AV_PIX_FMT_RGB444BE:
810  return SUBPACKED_FMT(RGBA, 4, 4, 4);
811  case AV_PIX_FMT_BGR444LE:
812  case AV_PIX_FMT_BGR444BE:
813  return SUBPACKED_FMT(BGRA, 4, 4, 4);
814 
815  /* Sub-packed 32-bit aligned formats */
816  case AV_PIX_FMT_X2RGB10LE:
817  case AV_PIX_FMT_X2RGB10BE:
818  return SUBPACKED_FMT(ARGB, 2, 10, 10, 10);
819  case AV_PIX_FMT_X2BGR10LE:
820  case AV_PIX_FMT_X2BGR10BE:
821  return SUBPACKED_FMT(ABGR, 2, 10, 10, 10);
822  case AV_PIX_FMT_XV30LE:
823  case AV_PIX_FMT_XV30BE:
824  return SUBPACKED_FMT(AVYU, 2, 10, 10, 10);
825  case AV_PIX_FMT_V30XLE:
826  case AV_PIX_FMT_V30XBE:
827  return SUBPACKED_FMT(VYUA, 10, 10, 10, 2);
828 
829  /* 3-component formats with extra padding */
830  case AV_PIX_FMT_RGB0: return PACKED_FMT(RGBA, 4);
831  case AV_PIX_FMT_BGR0: return PACKED_FMT(BGRA, 4);
832  case AV_PIX_FMT_0RGB: return PACKED_FMT(ARGB, 4);
833  case AV_PIX_FMT_0BGR: return PACKED_FMT(ABGR, 4);
834  case AV_PIX_FMT_VUYX: return PACKED_FMT(VUYA, 4);
835  case AV_PIX_FMT_XV36LE:
836  case AV_PIX_FMT_XV36BE:
837  return PACKED_FMT(UYVA, 4, .shift = 4);
838  case AV_PIX_FMT_XV48LE:
839  case AV_PIX_FMT_XV48BE:
840  return PACKED_FMT(UYVA, 4);
841 
842  /* Miscellaneous irregular formats */
843  case AV_PIX_FMT_PAL8:
844  return (FmtInfo) {
845  .rw = { .elems = 4, .mode = SWS_RW_PALETTE },
846  /* PAL8 is explicitly defined as endian-dependent */
847  #if AV_HAVE_BIGENDIAN
848  .swizzle = ARGB,
849  #else
850  .swizzle = BGRA,
851  #endif
852  };
853  }
854 
855  return (FmtInfo) {0};
856 }
857 
858 struct comp {
859  int index;
860  int plane;
861  int offset;
862 };
863 
864 /* Compare by (plane, offset) */
865 static int cmp_comp(const void *a, const void *b) {
866  const struct comp *ca = a;
867  const struct comp *cb = b;
868  if (ca->plane != cb->plane)
869  return ca->plane - cb->plane;
870  return ca->offset - cb->offset;
871 }
872 
873 static int fmt_analyze_regular(const AVPixFmtDescriptor *desc, SwsReadWriteOp *rw_op,
874  SwsSwizzleOp *swizzle, SwsShiftOp *shift)
875 {
876  if (desc->nb_components == 2) {
877  /* YA formats */
878  *swizzle = SWS_SWIZZLE(0, 3, 1, 2);
879  } else {
880  /* Sort by increasing component order */
881  struct comp sorted[4] = { {0}, {1}, {2}, {3} };
882  for (int i = 0; i < desc->nb_components; i++) {
883  sorted[i].plane = desc->comp[i].plane;
884  sorted[i].offset = desc->comp[i].offset;
885  }
886 
887  qsort(sorted, desc->nb_components, sizeof(struct comp), cmp_comp);
888 
889  SwsSwizzleOp swiz = SWS_SWIZZLE(0, 1, 2, 3);
890  for (int i = 0; i < desc->nb_components; i++)
891  swiz.in[i] = sorted[i].index;
892  *swizzle = swiz;
893  }
894 
895  SwsReadWriteMode mode = SWS_RW_PLANAR;
896  if (desc->nb_components > 1 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR))
897  mode = SWS_RW_PACKED;
898 
899  *shift = (SwsShiftOp) { desc->comp[0].shift };
900  *rw_op = (SwsReadWriteOp) {
901  .elems = desc->nb_components,
902  .mode = mode,
903  };
904  return 0;
905 }
906 
907 static int fmt_analyze(enum AVPixelFormat fmt, SwsReadWriteOp *rw_op,
908  SwsPackOp *pack_op, SwsSwizzleOp *swizzle,
909  SwsShiftOp *shift, SwsPixelType *pixel_type,
910  SwsPixelType *raw_type)
911 {
912  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
913  if (!desc)
914  return AVERROR(EINVAL);
915 
916  /* No support for subsampled formats at the moment */
917  if (desc->log2_chroma_w || desc->log2_chroma_h)
918  return AVERROR(ENOTSUP);
919 
920  /* No support for semi-planar formats at the moment */
921  if (desc->flags & AV_PIX_FMT_FLAG_PLANAR &&
922  av_pix_fmt_count_planes(fmt) < desc->nb_components)
923  return AVERROR(ENOTSUP);
924 
925  *pixel_type = *raw_type = fmt_pixel_type(fmt);
926  if (!*pixel_type)
927  return AVERROR(ENOTSUP);
928 
929  if (is_regular_fmt(fmt)) {
930  *pack_op = (SwsPackOp) {0};
931  return fmt_analyze_regular(desc, rw_op, swizzle, shift);
932  }
933 
934  FmtInfo info = fmt_info_irregular(fmt);
935  if (!info.rw.elems)
936  return AVERROR(ENOTSUP);
937 
938  *rw_op = info.rw;
939  *pack_op = info.pack;
940  *swizzle = info.swizzle;
941  *shift = (SwsShiftOp) { info.shift };
942 
943  if (info.pack.pattern[0]) {
944  const int sum = info.pack.pattern[0] + info.pack.pattern[1] +
945  info.pack.pattern[2] + info.pack.pattern[3];
946  if (sum > 16)
947  *raw_type = SWS_PIXEL_U32;
948  else if (sum > 8)
949  *raw_type = SWS_PIXEL_U16;
950  else
951  *raw_type = SWS_PIXEL_U8;
952  }
953 
954  return 0;
955 }
956 
957 static int test_format_ops(enum AVPixelFormat format, int output)
958 {
959  SwsReadWriteOp rw;
960  SwsSwizzleOp swizzle;
961  SwsPackOp pack;
962  SwsShiftOp shift;
963  SwsPixelType pixel_type, raw_type;
964  int ret = fmt_analyze(format, &rw, &pack, &swizzle, &shift,
965  &pixel_type, &raw_type);
966  if (ret < 0)
967  return 0;
968  if (rw.mode == SWS_RW_PALETTE && output)
969  return 0; /* palettes are currently only supported as input */
970  return 1;
971 }
972 
973 static void swizzle_inv(SwsSwizzleOp *swiz)
974 {
975  /* Input[x] =: Output[swizzle.x] */
976  unsigned tmp[4];
977  tmp[swiz->x] = 0;
978  tmp[swiz->y] = 1;
979  tmp[swiz->z] = 2;
980  tmp[swiz->w] = 3;
981  *swiz = (SwsSwizzleOp) {{ .x = tmp[0], tmp[1], tmp[2], tmp[3] }};
982 }
983 
984 /**
985  * This initializes all absent components explicitly to zero. There is no
986  * need to worry about the correct neutral value as fmt_decode() will
987  * implicitly ignore and overwrite absent components in any case. This function
988  * is just to ensure that we don't operate on undefined memory. In most cases,
989  * it will end up getting pushed towards the output or optimized away entirely
990  * by the optimization pass.
991  */
992 static SwsClearOp fmt_clear(const SwsFormat *fmt)
993 {
994  const AVPixFmtDescriptor *desc = fmt_desc_decoded(fmt->format);
995  const bool has_chroma = desc->nb_components >= 3;
996  const bool has_alpha = desc->flags & AV_PIX_FMT_FLAG_ALPHA;
997 
998  SwsClearOp c = {0};
999  if (!has_chroma) {
1000  c.mask |= SWS_COMP(1) | SWS_COMP(2);
1001  c.value[1] = c.value[2] = Q0;
1002  }
1003 
1004  if (!has_alpha) {
1005  c.mask |= SWS_COMP(3);
1006  c.value[3] = Q0;
1007  }
1008 
1009  return c;
1010 }
1011 
1012 #if HAVE_BIGENDIAN
1013 # define NATIVE_ENDIAN_FLAG AV_PIX_FMT_FLAG_BE
1014 #else
1015 # define NATIVE_ENDIAN_FLAG 0
1016 #endif
1017 
1018 int ff_sws_decode_pixfmt(SwsOpList *ops, const SwsFormat *fmt)
1019 {
1020  const AVPixFmtDescriptor *desc = fmt_desc_decoded(fmt->format);
1021  SwsPixelType pixel_type, raw_type;
1022  SwsReadWriteOp rw_op;
1023  SwsSwizzleOp swizzle;
1024  SwsPackOp unpack;
1025  SwsComps *comps = &ops->comps_src;
1026  SwsShiftOp shift;
1027 
1028  RET(fmt_analyze(fmt->format, &rw_op, &unpack, &swizzle, &shift,
1029  &pixel_type, &raw_type));
1030 
1031  swizzle_inv(&swizzle);
1032 
1033  /* Set baseline pixel content flags */
1034  const int integer = ff_sws_pixel_type_is_int(raw_type);
1035  const int swapped = ff_sws_pixel_type_size(raw_type) > 1 &&
1036  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG;
1037  for (int i = 0; i < rw_op.elems; i++) {
1038  comps->flags[i] = (integer ? SWS_COMP_EXACT : 0) |
1039  (swapped ? SWS_COMP_SWAPPED : 0);
1040  }
1041 
1042  /* Generate value range information for simple unpacked formats */
1043  if (integer && !unpack.pattern[0]) {
1044  /* YA formats have desc->comp[] in the order {Y, A} instead of the
1045  * canonical order {Y, U, V, A} */
1046  const int is_ya = desc->nb_components == 2;
1047  for (int c = 0; c < desc->nb_components; c++) {
1048  const int bits = desc->comp[c].depth + shift.amount;
1049  const int idx = swizzle.in[is_ya ? 3 * c : c];
1050  comps->min[idx] = Q0;
1051  if (bits < 32) /* FIXME: AVRational is limited to INT_MAX */
1052  comps->max[idx] = Q((1ULL << bits) - 1);
1053  }
1054  }
1055 
1056  /* TODO: handle subsampled or semipacked input formats */
1057  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1058  .op = SWS_OP_READ,
1059  .type = raw_type,
1060  .rw = rw_op,
1061  }));
1062 
1063  if (swapped) {
1064  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1065  .op = SWS_OP_SWAP_BYTES,
1066  .type = raw_type,
1067  }));
1068  }
1069 
1070  if (unpack.pattern[0]) {
1071  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1072  .op = SWS_OP_UNPACK,
1073  .type = raw_type,
1074  .pack = unpack,
1075  }));
1076 
1077  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1078  .op = SWS_OP_CONVERT,
1079  .type = raw_type,
1080  .convert.to = pixel_type,
1081  }));
1082  }
1083 
1084  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1085  .op = SWS_OP_SWIZZLE,
1086  .type = pixel_type,
1087  .swizzle = swizzle,
1088  }));
1089 
1090  if (shift.amount) {
1091  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1092  .op = SWS_OP_RSHIFT,
1093  .type = pixel_type,
1094  .shift = shift,
1095  }));
1096  }
1097 
1098  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1099  .op = SWS_OP_CLEAR,
1100  .type = pixel_type,
1101  .clear = fmt_clear(fmt),
1102  }));
1103 
1104  return 0;
1105 }
1106 
1107 int ff_sws_encode_pixfmt(SwsOpList *ops, const SwsFormat *fmt)
1108 {
1109  const AVPixFmtDescriptor *desc = fmt_desc_decoded(fmt->format);
1110  SwsPixelType pixel_type, raw_type;
1111  SwsReadWriteOp rw_op;
1112  SwsSwizzleOp swizzle;
1113  SwsPackOp pack;
1114  SwsShiftOp shift;
1115 
1116  RET(fmt_analyze(fmt->format, &rw_op, &pack, &swizzle, &shift,
1117  &pixel_type, &raw_type));
1118 
1119  if (rw_op.mode == SWS_RW_PALETTE)
1120  return AVERROR(ENOTSUP);
1121 
1122  if (shift.amount) {
1123  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1124  .op = SWS_OP_LSHIFT,
1125  .type = pixel_type,
1126  .shift = shift,
1127  }));
1128  }
1129 
1130  if (rw_op.elems > desc->nb_components) {
1131  /* Format writes unused alpha channel, clear it explicitly for sanity */
1132  av_assert1(!(desc->flags & AV_PIX_FMT_FLAG_ALPHA));
1133  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1134  .op = SWS_OP_CLEAR,
1135  .type = pixel_type,
1136  .clear.mask = SWS_COMP(3),
1137  .clear.value[3] = Q0,
1138  }));
1139  }
1140 
1141  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1142  .op = SWS_OP_SWIZZLE,
1143  .type = pixel_type,
1144  .swizzle = swizzle,
1145  }));
1146 
1147  if (pack.pattern[0]) {
1148  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1149  .op = SWS_OP_CONVERT,
1150  .type = pixel_type,
1151  .convert.to = raw_type,
1152  }));
1153 
1154  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1155  .op = SWS_OP_PACK,
1156  .type = raw_type,
1157  .pack = pack,
1158  }));
1159  }
1160 
1161  if (ff_sws_pixel_type_size(raw_type) > 1 &&
1162  (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG) {
1163  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1164  .op = SWS_OP_SWAP_BYTES,
1165  .type = raw_type,
1166  }));
1167  }
1168 
1169  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1170  .op = SWS_OP_WRITE,
1171  .type = raw_type,
1172  .rw = rw_op,
1173  }));
1174 
1175  return 0;
1176 }
1177 
1178 static inline AVRational av_neg_q(AVRational x)
1179 {
1180  return (AVRational) { -x.num, x.den };
1181 }
1182 
1183 static SwsLinearOp fmt_encode_range(const SwsFormat *fmt, bool *incomplete)
1184 {
1185  SwsLinearOp c = { .m = {
1186  { Q1, Q0, Q0, Q0, Q0 },
1187  { Q0, Q1, Q0, Q0, Q0 },
1188  { Q0, Q0, Q1, Q0, Q0 },
1189  { Q0, Q0, Q0, Q1, Q0 },
1190  }};
1191 
1192  const AVPixFmtDescriptor *desc = fmt_desc_decoded(fmt->format);
1193  const int depth0 = desc->comp[0].depth;
1194  const int depth1 = desc->comp[1].depth;
1195  const int depth2 = desc->comp[2].depth;
1196  const int depth3 = desc->comp[3].depth;
1197 
1198  if (desc->flags & AV_PIX_FMT_FLAG_FLOAT)
1199  return c; /* floats are directly output as-is */
1200 
1201  av_assert0(depth0 < 32 && depth1 < 32 && depth2 < 32 && depth3 < 32);
1202  if (fmt->csp == AVCOL_SPC_RGB || (desc->flags & AV_PIX_FMT_FLAG_XYZ)) {
1203  c.m[0][0] = Q((1 << depth0) - 1);
1204  c.m[1][1] = Q((1 << depth1) - 1);
1205  c.m[2][2] = Q((1 << depth2) - 1);
1206  } else if (fmt->range == AVCOL_RANGE_JPEG) {
1207  /* Full range YUV */
1208  c.m[0][0] = Q((1 << depth0) - 1);
1209  if (desc->nb_components >= 3) {
1210  /* This follows the ITU-R convention, which is slightly different
1211  * from the JFIF convention. */
1212  c.m[1][1] = Q((1 << depth1) - 1);
1213  c.m[2][2] = Q((1 << depth2) - 1);
1214  c.m[1][4] = Q(1 << (depth1 - 1));
1215  c.m[2][4] = Q(1 << (depth2 - 1));
1216  }
1217  } else {
1218  /* Limited range YUV */
1219  if (fmt->range == AVCOL_RANGE_UNSPECIFIED)
1220  *incomplete = true;
1221  c.m[0][0] = Q(219 << (depth0 - 8));
1222  c.m[0][4] = Q( 16 << (depth0 - 8));
1223  if (desc->nb_components >= 3) {
1224  c.m[1][1] = Q(224 << (depth1 - 8));
1225  c.m[2][2] = Q(224 << (depth2 - 8));
1226  c.m[1][4] = Q(128 << (depth1 - 8));
1227  c.m[2][4] = Q(128 << (depth2 - 8));
1228  }
1229  }
1230 
1231  if (desc->flags & AV_PIX_FMT_FLAG_ALPHA) {
1232  const bool is_ya = desc->nb_components == 2;
1233  c.m[3][3] = Q((1 << (is_ya ? depth1 : depth3)) - 1);
1234  }
1235 
1236  if (fmt->format == AV_PIX_FMT_MONOWHITE) {
1237  /* This format is inverted, 0 = white, 1 = black */
1238  c.m[0][4] = av_add_q(c.m[0][4], c.m[0][0]);
1239  c.m[0][0] = av_neg_q(c.m[0][0]);
1240  }
1241 
1242  c.mask = ff_sws_linear_mask(&c);
1243  return c;
1244 }
1245 
1246 static SwsLinearOp fmt_decode_range(const SwsFormat *fmt, bool *incomplete)
1247 {
1248  SwsLinearOp c = fmt_encode_range(fmt, incomplete);
1249 
1250  /* Invert main diagonal + offset: x = s * y + k ==> y = (x - k) / s */
1251  for (int i = 0; i < 4; i++) {
1252  av_assert1(c.m[i][i].num);
1253  c.m[i][i] = av_inv_q(c.m[i][i]);
1254  c.m[i][4] = av_mul_q(c.m[i][4], av_neg_q(c.m[i][i]));
1255  }
1256 
1257  /* Explicitly initialize alpha for sanity */
1258  if (!(fmt->desc->flags & AV_PIX_FMT_FLAG_ALPHA))
1259  c.m[3][4] = Q1;
1260 
1261  c.mask = ff_sws_linear_mask(&c);
1262  return c;
1263 }
1264 
1265 static AVRational *generate_bayer_matrix(const int size_log2)
1266 {
1267  const int size = 1 << size_log2;
1268  const int num_entries = size * size;
1269  AVRational *m = av_refstruct_allocz(sizeof(*m) * num_entries);
1270  av_assert1(size_log2 < 16);
1271  if (!m)
1272  return NULL;
1273 
1274  /* Start with a 1x1 matrix */
1275  m[0] = Q0;
1276 
1277  /* Generate three copies of the current, appropriately scaled and offset */
1278  for (int sz = 1; sz < size; sz <<= 1) {
1279  const int den = 4 * sz * sz;
1280  for (int y = 0; y < sz; y++) {
1281  for (int x = 0; x < sz; x++) {
1282  const AVRational cur = m[y * size + x];
1283  m[(y + sz) * size + x + sz] = av_add_q(cur, av_make_q(1, den));
1284  m[(y ) * size + x + sz] = av_add_q(cur, av_make_q(2, den));
1285  m[(y + sz) * size + x ] = av_add_q(cur, av_make_q(3, den));
1286  }
1287  }
1288  }
1289 
1290  /**
1291  * To correctly round, we need to evenly distribute the result on [0, 1),
1292  * giving an average value of 1/2.
1293  *
1294  * After the above construction, we have a matrix with average value:
1295  * [ 0/N + 1/N + 2/N + ... (N-1)/N ] / N = (N-1)/(2N)
1296  * where N = size * size is the total number of entries.
1297  *
1298  * To make the average value equal to 1/2 = N/(2N), add a bias of 1/(2N).
1299  */
1300  for (int i = 0; i < num_entries; i++)
1301  m[i] = av_add_q(m[i], av_make_q(1, 2 * num_entries));
1302 
1303  return m;
1304 }
1305 
1306 static bool trc_is_hdr(enum AVColorTransferCharacteristic trc)
1307 {
1308  static_assert(AVCOL_TRC_NB == 19, "Update this list when adding TRCs");
1309  static_assert(AVCOL_TRC_EXT_NB == 257, "Update this list when adding TRCs");
1310  switch (trc) {
1311  case AVCOL_TRC_LOG:
1312  case AVCOL_TRC_LOG_SQRT:
1313  case AVCOL_TRC_V_LOG:
1314  case AVCOL_TRC_SMPTEST2084:
1315  case AVCOL_TRC_ARIB_STD_B67:
1316  return true;
1317  default:
1318  return false;
1319  }
1320 }
1321 
1322 static int fmt_dither(SwsContext *ctx, SwsOpList *ops,
1323  const SwsPixelType type,
1324  const SwsFormat *src, const SwsFormat *dst)
1325 {
1326  SwsDither mode = ctx->dither;
1327  SwsDitherOp dither;
1328  const int bpc = dst->desc->comp[0].depth;
1329 
1330  if (mode == SWS_DITHER_AUTO) {
1331  /* Visual threshold of perception: 12 bits for SDR, 14 bits for HDR */
1332  const int jnd_bits = trc_is_hdr(dst->color.trc) ? 14 : 12;
1333  mode = bpc >= jnd_bits ? SWS_DITHER_NONE : SWS_DITHER_BAYER;
1334  }
1335 
1336  switch (mode) {
1337  case SWS_DITHER_NONE:
1338  if (ctx->flags & SWS_ACCURATE_RND) {
1339  /* Add constant 0.5 for correct rounding */
1340  AVRational *bias = av_refstruct_allocz(sizeof(*bias));
1341  if (!bias)
1342  return AVERROR(ENOMEM);
1343  *bias = (AVRational) {1, 2};
1344  return ff_sws_op_list_append(ops, &(SwsOp) {
1345  .op = SWS_OP_DITHER,
1346  .type = type,
1347  .dither.matrix = bias,
1348  .dither.min = *bias,
1349  .dither.max = *bias,
1350  });
1351  } else {
1352  return 0; /* No-op */
1353  }
1354  case SWS_DITHER_BAYER:
1355  /* Hardcode 16x16 matrix for now; in theory we could adjust this
1356  * based on the expected level of precision in the output, since lower
1357  * bit depth outputs can suffice with smaller dither matrices; however
1358  * in practice we probably want to use error diffusion for such low bit
1359  * depths anyway */
1360  dither.size_log2 = 4;
1361  dither.matrix = generate_bayer_matrix(dither.size_log2);
1362  if (!dither.matrix)
1363  return AVERROR(ENOMEM);
1364 
1365  const int size = 1 << dither.size_log2;
1366  dither.min = dither.max = dither.matrix[0];
1367  for (int i = 1; i < size * size; i++) {
1368  if (av_cmp_q(dither.min, dither.matrix[i]) > 0)
1369  dither.min = dither.matrix[i];
1370  if (av_cmp_q(dither.matrix[i], dither.max) > 0)
1371  dither.max = dither.matrix[i];
1372  }
1373 
1374  /* Brute-forced offsets; minimizes quantization error across a 16x16
1375  * bayer dither pattern for standard RGBA and YUVA pixel formats */
1376  const int offsets_16x16[4] = {0, 3, 2, 5};
1377  for (int i = 0; i < 4; i++) {
1378  av_assert0(offsets_16x16[i] <= INT8_MAX);
1379  dither.y_offset[i] = offsets_16x16[i];
1380  }
1381 
1382  const AVPixFmtDescriptor *src_desc = fmt_desc_decoded(src->format);
1383  if (src_desc->nb_components < 3 && bpc >= 8) {
1384  /**
1385  * For high-bit-depth sources without chroma, use same matrix
1386  * offset for all color channels. This prevents introducing color
1387  * noise in grayscale images; and also allows optimizing the dither
1388  * operation. Skipped for low bit depth (<8 bpc) as the loss in
1389  * PSNR, from the inability to diffuse error among all three
1390  * channels, can be substantial.
1391  *
1392  * This shifts: { X, Y, Z, W } -> { X, X, X, Y }
1393  */
1394  dither.y_offset[3] = dither.y_offset[1];
1395  dither.y_offset[1] = dither.y_offset[2] = dither.y_offset[0];
1396  }
1397 
1398  return ff_sws_op_list_append(ops, &(SwsOp) {
1399  .op = SWS_OP_DITHER,
1400  .type = type,
1401  .dither = dither,
1402  });
1403  case SWS_DITHER_ED:
1404  case SWS_DITHER_A_DITHER:
1405  case SWS_DITHER_X_DITHER:
1406  return AVERROR(ENOTSUP);
1407 
1408  case SWS_DITHER_NB:
1409  break;
1410  }
1411 
1412  av_unreachable("Invalid dither mode");
1413  return AVERROR(EINVAL);
1414 }
1415 
1416 static inline SwsLinearOp
1417 linear_mat3(const AVRational m00, const AVRational m01, const AVRational m02,
1418  const AVRational m10, const AVRational m11, const AVRational m12,
1419  const AVRational m20, const AVRational m21, const AVRational m22)
1420 {
1421  SwsLinearOp c = {{
1422  { m00, m01, m02, Q0, Q0 },
1423  { m10, m11, m12, Q0, Q0 },
1424  { m20, m21, m22, Q0, Q0 },
1425  { Q0, Q0, Q0, Q1, Q0 },
1426  }};
1427 
1428  c.mask = ff_sws_linear_mask(&c);
1429  return c;
1430 }
1431 
1432 void ff_sws_chroma_pos(const SwsFormat *fmt, bool *incomplete,
1433  int *out_x_pos, int *out_y_pos)
1434 {
1435  enum AVChromaLocation chroma_loc = fmt->loc;
1436  const int sub_x = fmt->desc->log2_chroma_w;
1437  const int sub_y = fmt->desc->log2_chroma_h;
1438  int x_pos, y_pos;
1439 
1440  /* Explicitly default to center siting for compatibility with swscale */
1441  if (chroma_loc == AVCHROMA_LOC_UNSPECIFIED) {
1442  chroma_loc = AVCHROMA_LOC_CENTER;
1443  *incomplete |= sub_x || sub_y;
1444  }
1445 
1446  /* av_chroma_location_enum_to_pos() always gives us values in the range from
1447  * 0 to 256, but we need to adjust this to the true value range of the
1448  * subsampling grid, which may be larger for h/v_sub > 1 */
1449  av_chroma_location_enum_to_pos(&x_pos, &y_pos, chroma_loc);
1450  x_pos *= (1 << sub_x) - 1;
1451  y_pos *= (1 << sub_y) - 1;
1452 
1453  /* Fix vertical chroma position for interlaced frames */
1454  if (sub_y && fmt->interlaced) {
1455  /* When vertically subsampling, chroma samples are effectively only
1456  * placed next to even rows. To access them from the odd field, we need
1457  * to account for this shift by offsetting the distance of one luma row.
1458  *
1459  * For 4x vertical subsampling (v_sub == 2), they are only placed
1460  * next to every *other* even row, so we need to shift by three luma
1461  * rows to get to the chroma sample. */
1462  if (fmt->field == FIELD_BOTTOM)
1463  y_pos += (256 << sub_y) - 256;
1464 
1465  /* Luma row distance is doubled for fields, so halve offsets */
1466  y_pos >>= 1;
1467  }
1468 
1469  *out_x_pos = x_pos;
1470  *out_y_pos = y_pos;
1471 }
1472 
1473 int ff_sws_decode_colors(SwsContext *ctx, SwsPixelType type,
1474  SwsOpList *ops, const SwsFormat *fmt, bool *incomplete)
1475 {
1476  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(fmt->csp);
1477  const SwsPixelType pixel_type = fmt_pixel_type(fmt->format);
1478  if (!pixel_type)
1479  return AVERROR(ENOTSUP);
1480 
1481  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1482  .op = SWS_OP_CONVERT,
1483  .type = pixel_type,
1484  .convert.to = type,
1485  }));
1486 
1487  /* Decode pixel format into standardized range */
1488  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1489  .type = type,
1490  .op = SWS_OP_LINEAR,
1491  .lin = fmt_decode_range(fmt, incomplete),
1492  }));
1493 
1494  /* Final step, decode colorspace */
1495  switch (fmt->csp) {
1496  case AVCOL_SPC_RGB:
1497  return 0;
1498  case AVCOL_SPC_UNSPECIFIED:
1499  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1500  *incomplete = true;
1501  av_fallthrough;
1502  case AVCOL_SPC_FCC:
1503  case AVCOL_SPC_BT470BG:
1504  case AVCOL_SPC_SMPTE170M:
1505  case AVCOL_SPC_BT709:
1506  case AVCOL_SPC_SMPTE240M:
1507  case AVCOL_SPC_BT2020_NCL: {
1508  AVRational crg = av_sub_q(Q0, av_div_q(c->cr, c->cg));
1509  AVRational cbg = av_sub_q(Q0, av_div_q(c->cb, c->cg));
1510  AVRational m02 = av_mul_q(Q(2), av_sub_q(Q1, c->cr));
1511  AVRational m21 = av_mul_q(Q(2), av_sub_q(Q1, c->cb));
1512  AVRational m11 = av_mul_q(cbg, m21);
1513  AVRational m12 = av_mul_q(crg, m02);
1514 
1515  return ff_sws_op_list_append(ops, &(SwsOp) {
1516  .type = type,
1517  .op = SWS_OP_LINEAR,
1518  .lin = linear_mat3(
1519  Q1, Q0, m02,
1520  Q1, m11, m12,
1521  Q1, m21, Q0
1522  ),
1523  });
1524  }
1525 
1526  case AVCOL_SPC_YCGCO:
1527  return ff_sws_op_list_append(ops, &(SwsOp) {
1528  .type = type,
1529  .op = SWS_OP_LINEAR,
1530  .lin = linear_mat3(
1531  Q1, Q(-1), Q( 1),
1532  Q1, Q( 1), Q( 0),
1533  Q1, Q(-1), Q(-1)
1534  ),
1535  });
1536 
1537  case AVCOL_SPC_BT2020_CL:
1538  case AVCOL_SPC_SMPTE2085:
1539  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1540  case AVCOL_SPC_CHROMA_DERIVED_CL:
1541  case AVCOL_SPC_ICTCP:
1542  case AVCOL_SPC_IPT_C2:
1543  case AVCOL_SPC_YCGCO_RE:
1544  case AVCOL_SPC_YCGCO_RO:
1545  return AVERROR(ENOTSUP);
1546 
1547  case AVCOL_SPC_RESERVED:
1548  return AVERROR(EINVAL);
1549 
1550  case AVCOL_SPC_NB:
1551  break;
1552  }
1553 
1554  av_unreachable("Corrupt AVColorSpace value?");
1555  return AVERROR(EINVAL);
1556 }
1557 
1558 int ff_sws_encode_colors(SwsContext *ctx, SwsPixelType type,
1559  SwsOpList *ops, const SwsFormat *src,
1560  const SwsFormat *dst, bool *incomplete)
1561 {
1562  const AVLumaCoefficients *c = av_csp_luma_coeffs_from_avcsp(dst->csp);
1563  const SwsPixelType pixel_type = fmt_pixel_type(dst->format);
1564  if (!pixel_type)
1565  return AVERROR(ENOTSUP);
1566 
1567  switch (dst->csp) {
1568  case AVCOL_SPC_RGB:
1569  break;
1570  case AVCOL_SPC_UNSPECIFIED:
1571  c = av_csp_luma_coeffs_from_avcsp(AVCOL_SPC_BT470BG);
1572  *incomplete = true;
1573  av_fallthrough;
1574  case AVCOL_SPC_FCC:
1575  case AVCOL_SPC_BT470BG:
1576  case AVCOL_SPC_SMPTE170M:
1577  case AVCOL_SPC_BT709:
1578  case AVCOL_SPC_SMPTE240M:
1579  case AVCOL_SPC_BT2020_NCL: {
1580  AVRational cb1 = av_sub_q(c->cb, Q1);
1581  AVRational cr1 = av_sub_q(c->cr, Q1);
1582  AVRational m20 = av_make_q(1,2);
1583  AVRational m10 = av_mul_q(m20, av_div_q(c->cr, cb1));
1584  AVRational m11 = av_mul_q(m20, av_div_q(c->cg, cb1));
1585  AVRational m21 = av_mul_q(m20, av_div_q(c->cg, cr1));
1586  AVRational m22 = av_mul_q(m20, av_div_q(c->cb, cr1));
1587 
1588  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1589  .type = type,
1590  .op = SWS_OP_LINEAR,
1591  .lin = linear_mat3(
1592  c->cr, c->cg, c->cb,
1593  m10, m11, m20,
1594  m20, m21, m22
1595  ),
1596  }));
1597  break;
1598  }
1599 
1600  case AVCOL_SPC_YCGCO:
1601  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1602  .type = type,
1603  .op = SWS_OP_LINEAR,
1604  .lin = linear_mat3(
1605  av_make_q( 1, 4), av_make_q(1, 2), av_make_q( 1, 4),
1606  av_make_q( 1, 2), av_make_q(0, 1), av_make_q(-1, 2),
1607  av_make_q(-1, 4), av_make_q(1, 2), av_make_q(-1, 4)
1608  ),
1609  }));
1610  break;
1611 
1612  case AVCOL_SPC_BT2020_CL:
1613  case AVCOL_SPC_SMPTE2085:
1614  case AVCOL_SPC_CHROMA_DERIVED_NCL:
1615  case AVCOL_SPC_CHROMA_DERIVED_CL:
1616  case AVCOL_SPC_ICTCP:
1617  case AVCOL_SPC_IPT_C2:
1618  case AVCOL_SPC_YCGCO_RE:
1619  case AVCOL_SPC_YCGCO_RO:
1620  return AVERROR(ENOTSUP);
1621 
1622  case AVCOL_SPC_RESERVED:
1623  case AVCOL_SPC_NB:
1624  return AVERROR(EINVAL);
1625  }
1626 
1627  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1628  .type = type,
1629  .op = SWS_OP_LINEAR,
1630  .lin = fmt_encode_range(dst, incomplete),
1631  }));
1632 
1633  if (!(dst->desc->flags & AV_PIX_FMT_FLAG_FLOAT)) {
1634  SwsClampOp range = {0};
1635 
1636  const bool is_ya = dst->desc->nb_components == 2;
1637  for (int i = 0; i < dst->desc->nb_components; i++) {
1638  /* Clamp to legal pixel range */
1639  const int idx = i * (is_ya ? 3 : 1);
1640  range.limit[idx] = Q((1 << dst->desc->comp[i].depth) - 1);
1641  }
1642 
1643  RET(fmt_dither(ctx, ops, type, src, dst));
1644  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1645  .op = SWS_OP_MAX,
1646  .type = type,
1647  .clamp = {{ Q0, Q0, Q0, Q0 }},
1648  }));
1649 
1650  RET(ff_sws_op_list_append(ops, &(SwsOp) {
1651  .op = SWS_OP_MIN,
1652  .type = type,
1653  .clamp = range,
1654  }));
1655  }
1656 
1657  return ff_sws_op_list_append(ops, &(SwsOp) {
1658  .type = type,
1659  .op = SWS_OP_CONVERT,
1660  .convert.to = pixel_type,
1661  });
1662 }
1663 
1664 static SwsScaler get_scaler_fallback(SwsContext *ctx)
1665 {
1666  if (ctx->scaler != SWS_SCALE_AUTO)
1667  return ctx->scaler;
1668 
1669  /* Backwards compatibility with legacy flags API */
1670  if (ctx->flags & SWS_BILINEAR) {
1671  return SWS_SCALE_BILINEAR;
1672  } else if (ctx->flags & (SWS_BICUBIC | SWS_BICUBLIN)) {
1673  return SWS_SCALE_BICUBIC;
1674  } else if (ctx->flags & SWS_POINT) {
1675  return SWS_SCALE_POINT;
1676  } else if (ctx->flags & SWS_AREA) {
1677  return SWS_SCALE_AREA;
1678  } else if (ctx->flags & SWS_GAUSS) {
1679  return SWS_SCALE_GAUSSIAN;
1680  } else if (ctx->flags & SWS_SINC) {
1681  return SWS_SCALE_SINC;
1682  } else if (ctx->flags & SWS_LANCZOS) {
1683  return SWS_SCALE_LANCZOS;
1684  } else if (ctx->flags & SWS_SPLINE) {
1685  return SWS_SCALE_SPLINE;
1686  } else {
1687  return SWS_SCALE_AUTO;
1688  }
1689 }
1690 
1691 static int add_filter(SwsContext *ctx, SwsPixelType type, SwsOpList *ops,
1692  SwsOpType filter, int src_size, int dst_size)
1693 {
1694  if (src_size == dst_size)
1695  return 0; /* no-op */
1696 
1697  SwsFilterParams params = {
1698  .scaler = get_scaler_fallback(ctx),
1699  .src_size = src_size,
1700  .dst_size = dst_size,
1701  };
1702 
1703  for (int i = 0; i < SWS_NUM_SCALER_PARAMS; i++)
1704  params.scaler_params[i] = ctx->scaler_params[i];
1705 
1706  SwsFilterWeights *kernel;
1707  int ret = ff_sws_filter_generate(ctx, &params, &kernel);
1708  if (ret == AVERROR(ENOTSUP)) {
1709  /* Filter size exceeds limit; cascade with geometric mean size */
1710  int mean = sqrt((int64_t) src_size * dst_size);
1711  if (mean == src_size || mean == dst_size)
1712  return AVERROR_BUG; /* sanity, prevent infinite loop */
1713  ret = add_filter(ctx, type, ops, filter, src_size, mean);
1714  if (ret < 0)
1715  return ret;
1716  return add_filter(ctx, type, ops, filter, mean, dst_size);
1717  } else if (ret < 0) {
1718  return ret;
1719  }
1720 
1721  return ff_sws_op_list_append(ops, &(SwsOp) {
1722  .type = type,
1723  .op = filter,
1724  .filter.kernel = kernel,
1725  .filter.type = type,
1726  });
1727 }
1728 
1729 int ff_sws_add_filters(SwsContext *ctx, SwsPixelType type, SwsOpList *ops,
1730  const SwsFormat *src, const SwsFormat *dst)
1731 {
1732  /**
1733  * Always perform horizontal scaling first, since it's much more likely to
1734  * benefit from small integer optimizations; we should maybe flip the order
1735  * here if we're downscaling the vertical resolution by a lot, though.
1736  */
1737  int ret = add_filter(ctx, type, ops, SWS_OP_FILTER_H, src->width, dst->width);
1738  if (ret < 0)
1739  return ret;
1740 
1741  return add_filter(ctx, type, ops, SWS_OP_FILTER_V, src->height, dst->height);
1742 }
1743 
1744 int ff_sws_op_list_generate(SwsContext *ctx, const SwsFormat *src,
1745  const SwsFormat *dst, SwsOpList **out_ops,
1746  bool *incomplete)
1747 {
1748  /* The new code does not yet support alpha blending */
1749  if (src->desc->flags & AV_PIX_FMT_FLAG_ALPHA &&
1750  ctx->alpha_blend != SWS_ALPHA_BLEND_NONE)
1751  return AVERROR(ENOTSUP);
1752 
1753  SwsOpList *ops = ff_sws_op_list_alloc();
1754  if (!ops)
1755  return AVERROR(ENOMEM);
1756  ops->src = *src;
1757  ops->dst = *dst;
1758 
1759  const SwsPixelType type = SWS_PIXEL_F32;
1760  int ret = ff_sws_decode_pixfmt(ops, src);
1761  if (ret < 0)
1762  goto fail;
1763  ret = ff_sws_decode_colors(ctx, type, ops, src, incomplete);
1764  if (ret < 0)
1765  goto fail;
1766  ret = ff_sws_add_filters(ctx, type, ops, src, dst);
1767  if (ret < 0)
1768  goto fail;
1769  ret = ff_sws_encode_colors(ctx, type, ops, src, dst, incomplete);
1770  if (ret < 0)
1771  goto fail;
1772  ret = ff_sws_encode_pixfmt(ops, dst);
1773  if (ret < 0)
1774  goto fail;
1775 
1776  *out_ops = ops;
1777  return 0;
1778 
1779 fail:
1780  ff_sws_op_list_free(&ops);
1781  return ret;
1782 }
1783 
1784 #else /* !CONFIG_UNSTABLE */
1785 
1786 static int test_format_ops(enum AVPixelFormat format, int output)
1787 {
1788  return 0;
1789 }
1790 
1791 #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:634
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:621
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:157
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
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:302
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
FIELD_BOTTOM
@ FIELD_BOTTOM
Definition: format.h:57
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
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:146
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:728
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:83
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:85
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:607
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:579
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:146
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:492
SwsDitherOp
Definition: ops.h:175
test_format_legacy
static int test_format_legacy(enum AVPixelFormat format, int output)
Definition: format.c:560
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:102
SwsSwizzleOp
Definition: ops.h:138
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:224
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
av_chroma_location_enum_to_pos
int av_chroma_location_enum_to_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
Definition: pixdesc.c:3898
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:150
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:1786
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:590
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
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
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
tmp
static uint8_t tmp[40]
Definition: aes_ctr.c:52
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:621
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:656
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:541
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:574
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:135
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:626
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:167
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
ff_sws_linear_mask
uint32_t ff_sws_linear_mask(const SwsLinearOp *c)
Definition: ops.c:773
size
int size
Definition: twinvq_data.h:10344
SwsShiftOp
Definition: ops.h:153
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:288
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:85
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:511
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:565
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:614
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:182
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:631
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:484
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:81
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:130
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:86
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:643
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:228
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
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:288
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:125
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
SWS_RW_PALETTE
@ SWS_RW_PALETTE
Definition: ops.h:99
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
SwsFormat::field
int field
Definition: format.h:80
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
AVCHROMA_LOC_CENTER
@ AVCHROMA_LOC_CENTER
MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0.
Definition: pixfmt.h:799
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:146
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:82
SwsFormat::color
SwsColor color
Definition: format.h:87
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
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
ff_sws_encode_pixfmt
int ff_sws_encode_pixfmt(SwsOpList *ops, const SwsFormat *fmt)
SwsSwizzleOp::x
uint8_t x
Definition: ops.h:146
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:84
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:113
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:145
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
ff_sws_decode_pixfmt
int ff_sws_decode_pixfmt(SwsOpList *ops, const SwsFormat *fmt)
Append a set of operations for decoding/encoding raw pixels.
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
SwsReadWriteOp::mode
SwsReadWriteMode mode
Examples: rgba = 4x u8 packed yuv444p = 3x u8 rgb565 = 1x u16 <- use SWS_OP_UNPACK to unpack monow = ...
Definition: ops.h:112
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:283
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
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
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
ff_sws_chroma_pos
void ff_sws_chroma_pos(const SwsFormat *fmt, bool *incomplete, int *out_xpos, int *out_ypos)
Wrapper around av_chroma_location_enum_to_pos() that accounts for the per-field offset introduced by ...
AV_PIX_FMT_GBRPF16LE
@ AV_PIX_FMT_GBRPF16LE
IEEE-754 half precision planer GBR 4:4:4, 48bpp, little-endian.
Definition: pixfmt.h:467
infer_trc_ref
static int infer_trc_ref(SwsColor *csp, const SwsColor *ref)
Definition: format.c:516
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:90
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:670
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