FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/graph.c
Date: 2025-01-20 09:27:23
Exec Total Coverage
Lines: 315 406 77.6%
Functions: 26 30 86.7%
Branches: 151 226 66.8%
Line Branch Exec Source
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/avassert.h"
22 #include "libavutil/error.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/macros.h"
25 #include "libavutil/mem.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/slicethread.h"
29
30 #include "libswscale/swscale.h"
31 #include "libswscale/utils.h"
32
33 #include "cms.h"
34 #include "lut3d.h"
35 #include "swscale_internal.h"
36 #include "graph.h"
37
38 5561 static int pass_alloc_output(SwsPass *pass)
39 {
40
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 5561 if (!pass || pass->output.fmt != AV_PIX_FMT_NONE)
41 5508 return 0;
42 53 pass->output.fmt = pass->format;
43 53 return av_image_alloc(pass->output.data, pass->output.linesize, pass->width,
44 53 pass->num_slices * pass->slice_h, pass->format, 64);
45 }
46
47 /* slice_align should be a power of two, or 0 to disable slice threading */
48 5561 static SwsPass *pass_add(SwsGraph *graph, void *priv, enum AVPixelFormat fmt,
49 int w, int h, SwsPass *input, int slice_align,
50 sws_filter_run_t run)
51 {
52 int ret;
53 5561 SwsPass *pass = av_mallocz(sizeof(*pass));
54
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 5561 if (!pass)
55 ✗ return NULL;
56
57 5561 pass->graph = graph;
58 5561 pass->run = run;
59 5561 pass->priv = priv;
60 5561 pass->format = fmt;
61 5561 pass->width = w;
62 5561 pass->height = h;
63 5561 pass->input = input;
64 5561 pass->output.fmt = AV_PIX_FMT_NONE;
65
66 5561 ret = pass_alloc_output(input);
67
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 5561 if (ret < 0) {
68 ✗ av_free(pass);
69 ✗ return NULL;
70 }
71
72
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 5561 if (!slice_align) {
73 11 pass->slice_h = pass->height;
74 11 pass->num_slices = 1;
75 } else {
76 5550 pass->slice_h = (pass->height + graph->num_threads - 1) / graph->num_threads;
77 5550 pass->slice_h = FFALIGN(pass->slice_h, slice_align);
78 5550 pass->num_slices = (pass->height + pass->slice_h - 1) / pass->slice_h;
79 }
80
81 5561 ret = av_dynarray_add_nofree(&graph->passes, &graph->num_passes, pass);
82
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 5561 if (ret < 0)
83 ✗ av_freep(&pass);
84 5561 return pass;
85 }
86
87 /* Wrapper around pass_add that chains a pass "in-place" */
88 52 static int pass_append(SwsGraph *graph, void *priv, enum AVPixelFormat fmt,
89 int w, int h, SwsPass **pass, int slice_align,
90 sws_filter_run_t run)
91 {
92 52 SwsPass *new = pass_add(graph, priv, fmt, w, h, *pass, slice_align, run);
93
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 52 if (!new)
94 ✗ return AVERROR(ENOMEM);
95 52 *pass = new;
96 52 return 0;
97 }
98
99 1101265 static int vshift(enum AVPixelFormat fmt, int plane)
100 {
101 1101265 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
102
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 1101265 return (plane == 1 || plane == 2) ? desc->log2_chroma_h : 0;
103 }
104
105 /* Shift an image vertically by y lines */
106 483549 static SwsImg shift_img(const SwsImg *img_base, int y)
107 {
108 483549 SwsImg img = *img_base;
109
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 1584814 for (int i = 0; i < 4 && img.data[i]; i++)
110 1101265 img.data[i] += (y >> vshift(img.fmt, i)) * img.linesize[i];
111 483549 return img;
112 }
113
114 ✗ static void run_copy(const SwsImg *out_base, const SwsImg *in_base,
115 int y, int h, const SwsPass *pass)
116 {
117 ✗ SwsImg in = shift_img(in_base, y);
118 ✗ SwsImg out = shift_img(out_base, y);
119
120 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(in.data) && in.data[i]; i++) {
121 ✗ const int lines = h >> vshift(in.fmt, i);
122 ✗ if (in.linesize[i] == out.linesize[i]) {
123 ✗ memcpy(out.data[i], in.data[i], lines * out.linesize[i]);
124 } else {
125 ✗ const int linesize = FFMIN(out.linesize[i], in.linesize[i]);
126 ✗ for (int j = 0; j < lines; j++) {
127 ✗ memcpy(out.data[i], in.data[i], linesize);
128 ✗ in.data[i] += in.linesize[i];
129 ✗ out.data[i] += out.linesize[i];
130 }
131 }
132 }
133 ✗ }
134
135 54 static void run_rgb0(const SwsImg *out, const SwsImg *in, int y, int h,
136 const SwsPass *pass)
137 {
138 54 SwsInternal *c = pass->priv;
139 54 const int x0 = c->src0Alpha - 1;
140 54 const int w4 = 4 * pass->width;
141 54 const int src_stride = in->linesize[0];
142 54 const int dst_stride = out->linesize[0];
143 54 const uint8_t *src = in->data[0] + y * src_stride;
144 54 uint8_t *dst = out->data[0] + y * dst_stride;
145
146
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 4716 for (int y = 0; y < h; y++) {
147 4662 memcpy(dst, src, w4 * sizeof(*dst));
148
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 2873864 for (int x = x0; x < w4; x += 4)
149 2869202 dst[x] = 0xFF;
150
151 4662 src += src_stride;
152 4662 dst += dst_stride;
153 }
154 54 }
155
156 1875 static void run_xyz2rgb(const SwsImg *out, const SwsImg *in, int y, int h,
157 const SwsPass *pass)
158 {
159 1875 ff_xyz12Torgb48(pass->priv, out->data[0] + y * out->linesize[0], out->linesize[0],
160 1875 in->data[0] + y * in->linesize[0], in->linesize[0],
161 1875 pass->width, h);
162 1875 }
163
164 1916 static void run_rgb2xyz(const SwsImg *out, const SwsImg *in, int y, int h,
165 const SwsPass *pass)
166 {
167 1916 ff_rgb48Toxyz12(pass->priv, out->data[0] + y * out->linesize[0], out->linesize[0],
168 1916 in->data[0] + y * in->linesize[0], in->linesize[0],
169 1916 pass->width, h);
170 1916 }
171
172 /***********************************************************************
173 * Internal ff_swscale() wrapper. This re-uses the legacy scaling API. *
174 * This is considered fully deprecated, and will be replaced by a full *
175 * reimplementation ASAP. *
176 ***********************************************************************/
177
178 5509 static void free_legacy_swscale(void *priv)
179 {
180 5509 SwsContext *sws = priv;
181 5509 sws_free_context(&sws);
182 5509 }
183
184 84282 static void setup_legacy_swscale(const SwsImg *out, const SwsImg *in,
185 const SwsPass *pass)
186 {
187 84282 SwsContext *sws = pass->priv;
188 84282 SwsInternal *c = sws_internal(sws);
189
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 84282 if (sws->flags & SWS_BITEXACT && sws->dither == SWS_DITHER_ED && c->dither_error[0]) {
190
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 4350 for (int i = 0; i < 4; i++)
191 3480 memset(c->dither_error[i], 0, sizeof(c->dither_error[0][0]) * (sws->dst_w + 2));
192 }
193
194
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 84282 if (usePal(sws->src_format))
195 4585 ff_update_palette(c, (const uint32_t *) in->data[1]);
196 84282 }
197
198 483549 static inline SwsContext *slice_ctx(const SwsPass *pass, int y)
199 {
200 483549 SwsContext *sws = pass->priv;
201 483549 SwsInternal *parent = sws_internal(sws);
202
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 483549 if (pass->num_slices == 1)
203 34350 return sws;
204
205 av_assert1(parent->nb_slice_ctx == pass->num_slices);
206 449199 sws = parent->slice_ctx[y / pass->slice_h];
207
208
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 449199 if (usePal(sws->src_format)) {
209 34415 SwsInternal *sub = sws_internal(sws);
210 34415 memcpy(sub->pal_yuv, parent->pal_yuv, sizeof(sub->pal_yuv));
211 34415 memcpy(sub->pal_rgb, parent->pal_rgb, sizeof(sub->pal_rgb));
212 }
213
214 449199 return sws;
215 }
216
217 77247 static void run_legacy_unscaled(const SwsImg *out, const SwsImg *in_base,
218 int y, int h, const SwsPass *pass)
219 {
220 77247 SwsContext *sws = slice_ctx(pass, y);
221 77247 SwsInternal *c = sws_internal(sws);
222 77247 const SwsImg in = shift_img(in_base, y);
223
224 77247 c->convert_unscaled(c, (const uint8_t *const *) in.data, in.linesize, y, h,
225 77247 out->data, out->linesize);
226 77247 }
227
228 406302 static void run_legacy_swscale(const SwsImg *out_base, const SwsImg *in,
229 int y, int h, const SwsPass *pass)
230 {
231 406302 SwsContext *sws = slice_ctx(pass, y);
232 406302 SwsInternal *c = sws_internal(sws);
233 406302 const SwsImg out = shift_img(out_base, y);
234
235 406302 ff_swscale(c, (const uint8_t *const *) in->data, in->linesize, 0,
236 sws->src_h, out.data, out.linesize, y, h);
237 406302 }
238
239 11016 static void get_chroma_pos(SwsGraph *graph, int *h_chr_pos, int *v_chr_pos,
240 const SwsFormat *fmt)
241 {
242 11016 enum AVChromaLocation chroma_loc = fmt->loc;
243 11016 const int sub_x = fmt->desc->log2_chroma_w;
244 11016 const int sub_y = fmt->desc->log2_chroma_h;
245 int x_pos, y_pos;
246
247 /* Explicitly default to center siting for compatibility with swscale */
248
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 11016 if (chroma_loc == AVCHROMA_LOC_UNSPECIFIED) {
249 11015 chroma_loc = AVCHROMA_LOC_CENTER;
250
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 11015 graph->incomplete |= sub_x || sub_y;
251 }
252
253 /* av_chroma_location_enum_to_pos() always gives us values in the range from
254 * 0 to 256, but we need to adjust this to the true value range of the
255 * subsampling grid, which may be larger for h/v_sub > 1 */
256 11016 av_chroma_location_enum_to_pos(&x_pos, &y_pos, chroma_loc);
257 11016 x_pos *= (1 << sub_x) - 1;
258 11016 y_pos *= (1 << sub_y) - 1;
259
260 /* Fix vertical chroma position for interlaced frames */
261
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 11016 if (sub_y && fmt->interlaced) {
262 /* When vertically subsampling, chroma samples are effectively only
263 * placed next to even rows. To access them from the odd field, we need
264 * to account for this shift by offsetting the distance of one luma row.
265 *
266 * For 4x vertical subsampling (v_sub == 2), they are only placed
267 * next to every *other* even row, so we need to shift by three luma
268 * rows to get to the chroma sample. */
269 ✗ if (graph->field == FIELD_BOTTOM)
270 ✗ y_pos += (256 << sub_y) - 256;
271
272 /* Luma row distance is doubled for fields, so halve offsets */
273 ✗ y_pos >>= 1;
274 }
275
276 /* Explicitly strip chroma offsets when not subsampling, because it
277 * interferes with the operation of flags like SWS_FULL_CHR_H_INP */
278
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 11016 *h_chr_pos = sub_x ? x_pos : -513;
279
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 11016 *v_chr_pos = sub_y ? y_pos : -513;
280 11016 }
281
282 22032 static void legacy_chr_pos(SwsGraph *graph, int *chr_pos, int override, int *warned)
283 {
284
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 22032 if (override == -513 || override == *chr_pos)
285 22032 return;
286
287 ✗ if (!*warned) {
288 ✗ av_log(NULL, AV_LOG_WARNING,
289 "Setting chroma position directly is deprecated, make sure "
290 "the frame is tagged with the correct chroma location.\n");
291 ✗ *warned = 1;
292 }
293
294 ✗ *chr_pos = override;
295 }
296
297 5510 static int init_legacy_subpass(SwsGraph *graph, SwsContext *sws,
298 SwsPass *input, SwsPass **output)
299 {
300 5510 SwsInternal *c = sws_internal(sws);
301 5510 const int src_w = sws->src_w, src_h = sws->src_h;
302 5510 const int dst_w = sws->dst_w, dst_h = sws->dst_h;
303
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 5510 const int unscaled = src_w == dst_w && src_h == dst_h;
304 5510 int align = c->dst_slice_align;
305 5510 SwsPass *pass = NULL;
306 int ret;
307
308
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 5510 if (c->cascaded_context[0]) {
309
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 1 const int num_cascaded = c->cascaded_context[2] ? 3 : 2;
310
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 3 for (int i = 0; i < num_cascaded; i++) {
311 2 SwsContext *sub = c->cascaded_context[i];
312 2 const int is_last = i + 1 == num_cascaded;
313
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 2 ret = init_legacy_subpass(graph, sub, input, is_last ? output : &input);
314
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 2 if (ret < 0)
315 ✗ return ret;
316 /* Steal cascaded context, so we can free the parent */
317 2 c->cascaded_context[i] = NULL;
318 }
319
320 1 sws_free_context(&sws);
321 1 return 0;
322 }
323
324
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 5509 if (sws->dither == SWS_DITHER_ED && !c->convert_unscaled)
325 11 align = 0; /* disable slice threading */
326
327
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 5509 if (c->src0Alpha && !c->dst0Alpha && isALPHA(sws->dst_format)) {
328 6 ret = pass_append(graph, c, AV_PIX_FMT_RGBA, src_w, src_h, &input, 1, run_rgb0);
329
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 6 if (ret < 0)
330 ✗ return ret;
331 }
332
333
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 5509 if (c->srcXYZ && !(c->dstXYZ && unscaled)) {
334 11 ret = pass_append(graph, c, AV_PIX_FMT_RGB48, src_w, src_h, &input, 1, run_xyz2rgb);
335
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 11 if (ret < 0)
336 ✗ return ret;
337 }
338
339 5509 pass = pass_add(graph, sws, sws->dst_format, dst_w, dst_h, input, align,
340
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 5509 c->convert_unscaled ? run_legacy_unscaled : run_legacy_swscale);
341
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 5509 if (!pass)
342 ✗ return AVERROR(ENOMEM);
343 5509 pass->setup = setup_legacy_swscale;
344 5509 pass->free = free_legacy_swscale;
345
346 /**
347 * For slice threading, we need to create sub contexts, similar to how
348 * swscale normally handles it internally. The most important difference
349 * is that we handle cascaded contexts before threaded contexts; whereas
350 * context_init_threaded() does it the other way around.
351 */
352
353
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 5509 if (pass->num_slices > 1) {
354 1855 c->slice_ctx = av_calloc(pass->num_slices, sizeof(*c->slice_ctx));
355
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 1855 if (!c->slice_ctx)
356 ✗ return AVERROR(ENOMEM);
357
358
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 18511 for (int i = 0; i < pass->num_slices; i++) {
359 SwsContext *slice;
360 SwsInternal *c2;
361 16656 slice = c->slice_ctx[i] = sws_alloc_context();
362
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 16656 if (!slice)
363 ✗ return AVERROR(ENOMEM);
364 16656 c->nb_slice_ctx++;
365
366 16656 c2 = sws_internal(slice);
367 16656 c2->parent = sws;
368
369 16656 ret = av_opt_copy(slice, sws);
370
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 16656 if (ret < 0)
371 ✗ return ret;
372
373 16656 ret = ff_sws_init_single_context(slice, NULL, NULL);
374
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 16656 if (ret < 0)
375 ✗ return ret;
376
377 16656 sws_setColorspaceDetails(slice, c->srcColorspaceTable,
378 16656 slice->src_range, c->dstColorspaceTable,
379 slice->dst_range, c->brightness, c->contrast,
380 c->saturation);
381
382
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 83280 for (int i = 0; i < FF_ARRAY_ELEMS(c->srcColorspaceTable); i++) {
383 66624 c2->srcColorspaceTable[i] = c->srcColorspaceTable[i];
384 66624 c2->dstColorspaceTable[i] = c->dstColorspaceTable[i];
385 }
386 }
387 }
388
389
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 5509 if (c->dstXYZ && !(c->srcXYZ && unscaled)) {
390 35 ret = pass_append(graph, c, AV_PIX_FMT_RGB48, dst_w, dst_h, &pass, 1, run_rgb2xyz);
391
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 35 if (ret < 0)
392 ✗ return ret;
393 }
394
395 5509 *output = pass;
396 5509 return 0;
397 }
398
399 5508 static int add_legacy_sws_pass(SwsGraph *graph, SwsFormat src, SwsFormat dst,
400 SwsPass *input, SwsPass **output)
401 {
402 5508 int ret, warned = 0;
403 5508 SwsContext *const ctx = graph->ctx;
404 5508 SwsContext *sws = sws_alloc_context();
405
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 5508 if (!sws)
406 ✗ return AVERROR(ENOMEM);
407
408 5508 sws->flags = ctx->flags;
409 5508 sws->dither = ctx->dither;
410 5508 sws->alpha_blend = ctx->alpha_blend;
411 5508 sws->gamma_flag = ctx->gamma_flag;
412
413 5508 sws->src_w = src.width;
414 5508 sws->src_h = src.height;
415 5508 sws->src_format = src.format;
416 5508 sws->src_range = src.range == AVCOL_RANGE_JPEG;
417
418 5508 sws->dst_w = dst.width;
419 5508 sws->dst_h = dst.height;
420 5508 sws->dst_format = dst.format;
421 5508 sws->dst_range = dst.range == AVCOL_RANGE_JPEG;
422 5508 get_chroma_pos(graph, &sws->src_h_chr_pos, &sws->src_v_chr_pos, &src);
423 5508 get_chroma_pos(graph, &sws->dst_h_chr_pos, &sws->dst_v_chr_pos, &dst);
424
425 5508 graph->incomplete |= src.range == AVCOL_RANGE_UNSPECIFIED;
426 5508 graph->incomplete |= dst.range == AVCOL_RANGE_UNSPECIFIED;
427
428 /* Allow overriding chroma position with the legacy API */
429 5508 legacy_chr_pos(graph, &sws->src_h_chr_pos, ctx->src_h_chr_pos, &warned);
430 5508 legacy_chr_pos(graph, &sws->src_v_chr_pos, ctx->src_v_chr_pos, &warned);
431 5508 legacy_chr_pos(graph, &sws->dst_h_chr_pos, ctx->dst_h_chr_pos, &warned);
432 5508 legacy_chr_pos(graph, &sws->dst_v_chr_pos, ctx->dst_v_chr_pos, &warned);
433
434 5508 ret = sws_init_context(sws, NULL, NULL);
435
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 5508 if (ret < 0) {
436 ✗ sws_free_context(&sws);
437 ✗ return ret;
438 }
439
440 /* Set correct color matrices */
441 {
442 int in_full, out_full, brightness, contrast, saturation;
443 const int *inv_table, *table;
444 5508 sws_getColorspaceDetails(sws, (int **)&inv_table, &in_full,
445 (int **)&table, &out_full,
446 &brightness, &contrast, &saturation);
447
448 5508 inv_table = sws_getCoefficients(src.csp);
449 5508 table = sws_getCoefficients(dst.csp);
450
451
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 7529 graph->incomplete |= src.csp != dst.csp &&
452
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 2021 (src.csp == AVCOL_SPC_UNSPECIFIED ||
453
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 582 dst.csp == AVCOL_SPC_UNSPECIFIED);
454
455 5508 sws_setColorspaceDetails(sws, inv_table, in_full, table, out_full,
456 brightness, contrast, saturation);
457 }
458
459 5508 ret = init_legacy_subpass(graph, sws, input, output);
460
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 5508 if (ret < 0) {
461 ✗ sws_free_context(&sws);
462 ✗ return ret;
463 }
464
465 5508 return 0;
466 }
467
468 /**************************
469 * Gamut and tone mapping *
470 **************************/
471
472 ✗ static void free_lut3d(void *priv)
473 {
474 ✗ SwsLut3D *lut = priv;
475 ✗ ff_sws_lut3d_free(&lut);
476 ✗ }
477
478 ✗ static void setup_lut3d(const SwsImg *out, const SwsImg *in, const SwsPass *pass)
479 {
480 ✗ SwsLut3D *lut = pass->priv;
481
482 /* Update dynamic frame metadata from the original source frame */
483 ✗ ff_sws_lut3d_update(lut, &pass->graph->src.color);
484 ✗ }
485
486 ✗ static void run_lut3d(const SwsImg *out_base, const SwsImg *in_base,
487 int y, int h, const SwsPass *pass)
488 {
489 ✗ SwsLut3D *lut = pass->priv;
490 ✗ const SwsImg in = shift_img(in_base, y);
491 ✗ const SwsImg out = shift_img(out_base, y);
492
493 ✗ ff_sws_lut3d_apply(lut, in.data[0], in.linesize[0], out.data[0],
494 ✗ out.linesize[0], pass->width, h);
495 ✗ }
496
497 5508 static int adapt_colors(SwsGraph *graph, SwsFormat src, SwsFormat dst,
498 SwsPass *input, SwsPass **output)
499 {
500 enum AVPixelFormat fmt_in, fmt_out;
501 5508 SwsColorMap map = {0};
502 SwsLut3D *lut;
503 SwsPass *pass;
504 int ret;
505
506 /**
507 * Grayspace does not really have primaries, so just force the use of
508 * the equivalent other primary set to avoid a conversion. Technically,
509 * this does affect the weights used for the Grayscale conversion, but
510 * in practise, that should give the expected results more often than not.
511 */
512
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 5508 if (isGray(dst.format)) {
513 316 dst.color = src.color;
514
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 5192 } else if (isGray(src.format)) {
515 70 src.color = dst.color;
516 }
517
518 /* Fully infer color spaces before color mapping logic */
519 5508 graph->incomplete |= ff_infer_colors(&src.color, &dst.color);
520
521 5508 map.intent = graph->ctx->intent;
522 5508 map.src = src.color;
523 5508 map.dst = dst.color;
524
525
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 5508 if (ff_sws_color_map_noop(&map))
526 5508 return 0;
527
528 ✗ lut = ff_sws_lut3d_alloc();
529 ✗ if (!lut)
530 ✗ return AVERROR(ENOMEM);
531
532 ✗ fmt_in = ff_sws_lut3d_pick_pixfmt(src, 0);
533 ✗ fmt_out = ff_sws_lut3d_pick_pixfmt(dst, 1);
534 ✗ if (fmt_in != src.format) {
535 ✗ SwsFormat tmp = src;
536 ✗ tmp.format = fmt_in;
537 ✗ ret = add_legacy_sws_pass(graph, src, tmp, input, &input);
538 ✗ if (ret < 0)
539 ✗ return ret;
540 }
541
542 ✗ ret = ff_sws_lut3d_generate(lut, fmt_in, fmt_out, &map);
543 ✗ if (ret < 0) {
544 ✗ ff_sws_lut3d_free(&lut);
545 ✗ return ret;
546 }
547
548 ✗ pass = pass_add(graph, lut, fmt_out, src.width, src.height,
549 input, 1, run_lut3d);
550 ✗ if (!pass) {
551 ✗ ff_sws_lut3d_free(&lut);
552 ✗ return AVERROR(ENOMEM);
553 }
554 ✗ pass->setup = setup_lut3d;
555 ✗ pass->free = free_lut3d;
556
557 ✗ *output = pass;
558 ✗ return 0;
559 }
560
561 /***************************************
562 * Main filter graph construction code *
563 ***************************************/
564
565 5508 static int init_passes(SwsGraph *graph)
566 {
567 5508 SwsFormat src = graph->src;
568 5508 SwsFormat dst = graph->dst;
569 5508 SwsPass *pass = NULL; /* read from main input image */
570 int ret;
571
572 5508 ret = adapt_colors(graph, src, dst, pass, &pass);
573
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 5508 if (ret < 0)
574 ✗ return ret;
575
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 5508 src.format = pass ? pass->format : src.format;
576 5508 src.color = dst.color;
577
578
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 5508 if (!ff_fmt_equal(&src, &dst)) {
579 5508 ret = add_legacy_sws_pass(graph, src, dst, pass, &pass);
580
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 5508 if (ret < 0)
581 ✗ return ret;
582 }
583
584
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 5508 if (!pass) {
585 /* No passes were added, so no operations were necessary */
586 ✗ graph->noop = 1;
587
588 /* Add threaded memcpy pass */
589 ✗ pass = pass_add(graph, NULL, dst.format, dst.width, dst.height, pass, 1, run_copy);
590 ✗ if (!pass)
591 ✗ return AVERROR(ENOMEM);
592 }
593
594 5508 return 0;
595 }
596
597 487394 static void sws_graph_worker(void *priv, int jobnr, int threadnr, int nb_jobs,
598 int nb_threads)
599 {
600 487394 SwsGraph *graph = priv;
601 487394 const SwsPass *pass = graph->exec.pass;
602
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 487394 const SwsImg *input = pass->input ? &pass->input->output : &graph->exec.input;
603
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 487394 const SwsImg *output = pass->output.fmt != AV_PIX_FMT_NONE ? &pass->output : &graph->exec.output;
604 487394 const int slice_y = jobnr * pass->slice_h;
605 487394 const int slice_h = FFMIN(pass->slice_h, pass->height - slice_y);
606
607 487394 pass->run(output, input, slice_y, slice_h, pass);
608 487394 }
609
610 5508 int ff_sws_graph_create(SwsContext *ctx, const SwsFormat *dst, const SwsFormat *src,
611 int field, SwsGraph **out_graph)
612 {
613 int ret;
614 5508 SwsGraph *graph = av_mallocz(sizeof(*graph));
615
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 5508 if (!graph)
616 ✗ return AVERROR(ENOMEM);
617
618 5508 graph->ctx = ctx;
619 5508 graph->src = *src;
620 5508 graph->dst = *dst;
621 5508 graph->field = field;
622 5508 graph->opts_copy = *ctx;
623
624 5508 graph->exec.input.fmt = src->format;
625 5508 graph->exec.output.fmt = dst->format;
626
627 5508 ret = avpriv_slicethread_create(&graph->slicethread, (void *) graph,
628 sws_graph_worker, NULL, ctx->threads);
629
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 5508 if (ret == AVERROR(ENOSYS))
630 ✗ graph->num_threads = 1;
631
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 5508 else if (ret < 0)
632 ✗ goto error;
633 else
634 5508 graph->num_threads = ret;
635
636 5508 ret = init_passes(graph);
637
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 5508 if (ret < 0)
638 ✗ goto error;
639
640 5508 *out_graph = graph;
641 5508 return 0;
642
643 ✗ error:
644 ✗ ff_sws_graph_free(&graph);
645 ✗ return ret;
646 }
647
648 160609 void ff_sws_graph_free(SwsGraph **pgraph)
649 {
650 160609 SwsGraph *graph = *pgraph;
651
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 160609 if (!graph)
652 155101 return;
653
654 5508 avpriv_slicethread_free(&graph->slicethread);
655
656
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 11069 for (int i = 0; i < graph->num_passes; i++) {
657 5561 SwsPass *pass = graph->passes[i];
658
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 5561 if (pass->free)
659 5509 pass->free(pass->priv);
660
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 5561 if (pass->output.fmt != AV_PIX_FMT_NONE)
661 53 av_free(pass->output.data[0]);
662 5561 av_free(pass);
663 }
664 5508 av_free(graph->passes);
665
666 5508 av_free(graph);
667 5508 *pgraph = NULL;
668 }
669
670 /* Tests only options relevant to SwsGraph */
671 78773 static int opts_equal(const SwsContext *c1, const SwsContext *c2)
672 {
673 157546 return c1->flags == c2->flags &&
674
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675
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676
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677
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 78773 c1->gamma_flag == c2->gamma_flag &&
678
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679
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680
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681
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682
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 236319 c1->intent == c2->intent &&
683
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 78773 !memcmp(c1->scaler_params, c2->scaler_params, sizeof(c1->scaler_params));
684
685 }
686
687 84281 int ff_sws_graph_reinit(SwsContext *ctx, const SwsFormat *dst, const SwsFormat *src,
688 int field, SwsGraph **out_graph)
689 {
690 84281 SwsGraph *graph = *out_graph;
691
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 163054 if (graph && ff_fmt_equal(&graph->src, src) &&
692
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 157546 ff_fmt_equal(&graph->dst, dst) &&
693 78773 opts_equal(ctx, &graph->opts_copy))
694 {
695 78773 ff_sws_graph_update_metadata(graph, &src->color);
696 78773 return 0;
697 }
698
699 5508 ff_sws_graph_free(out_graph);
700 5508 return ff_sws_graph_create(ctx, dst, src, field, out_graph);
701 }
702
703 78773 void ff_sws_graph_update_metadata(SwsGraph *graph, const SwsColor *color)
704 {
705
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 78773 if (!color)
706 ✗ return;
707
708 78773 ff_color_update_dynamic(&graph->src.color, color);
709 }
710
711 84281 void ff_sws_graph_run(SwsGraph *graph, uint8_t *const out_data[4],
712 const int out_linesize[4],
713 const uint8_t *const in_data[4],
714 const int in_linesize[4])
715 {
716 84281 SwsImg *out = &graph->exec.output;
717 84281 SwsImg *in = &graph->exec.input;
718 84281 memcpy(out->data, out_data, sizeof(out->data));
719 84281 memcpy(out->linesize, out_linesize, sizeof(out->linesize));
720 84281 memcpy(in->data, in_data, sizeof(in->data));
721 84281 memcpy(in->linesize, in_linesize, sizeof(in->linesize));
722
723
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 169032 for (int i = 0; i < graph->num_passes; i++) {
724 84751 const SwsPass *pass = graph->passes[i];
725 84751 graph->exec.pass = pass;
726
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 84751 if (pass->setup)
727 84282 pass->setup(out, in, pass);
728 84751 avpriv_slicethread_execute(graph->slicethread, pass->num_slices, 0);
729 }
730 84281 }
731