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path: root/libavfilter/vf_zscale.c (plain)
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1/*
2 * Copyright (c) 2015 Paul B Mahol
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/**
22 * @file
23 * zscale video filter using z.lib library
24 */
25
26#include <float.h>
27#include <stdio.h>
28#include <string.h>
29
30#include <zimg.h>
31
32#include "avfilter.h"
33#include "formats.h"
34#include "internal.h"
35#include "video.h"
36#include "libavutil/avstring.h"
37#include "libavutil/eval.h"
38#include "libavutil/internal.h"
39#include "libavutil/mathematics.h"
40#include "libavutil/opt.h"
41#include "libavutil/parseutils.h"
42#include "libavutil/pixdesc.h"
43#include "libavutil/imgutils.h"
44#include "libavutil/avassert.h"
45
46static const char *const var_names[] = {
47 "in_w", "iw",
48 "in_h", "ih",
49 "out_w", "ow",
50 "out_h", "oh",
51 "a",
52 "sar",
53 "dar",
54 "hsub",
55 "vsub",
56 "ohsub",
57 "ovsub",
58 NULL
59};
60
61enum var_name {
62 VAR_IN_W, VAR_IW,
63 VAR_IN_H, VAR_IH,
64 VAR_OUT_W, VAR_OW,
65 VAR_OUT_H, VAR_OH,
66 VAR_A,
67 VAR_SAR,
68 VAR_DAR,
69 VAR_HSUB,
70 VAR_VSUB,
71 VAR_OHSUB,
72 VAR_OVSUB,
73 VARS_NB
74};
75
76typedef struct ZScaleContext {
77 const AVClass *class;
78
79 /**
80 * New dimensions. Special values are:
81 * 0 = original width/height
82 * -1 = keep original aspect
83 * -N = try to keep aspect but make sure it is divisible by N
84 */
85 int w, h;
86 int dither;
87 int filter;
88 int colorspace;
89 int trc;
90 int primaries;
91 int range;
92 int chromal;
93 int colorspace_in;
94 int trc_in;
95 int primaries_in;
96 int range_in;
97 int chromal_in;
98 char *size_str;
99 double nominal_peak_luminance;
100 int approximate_gamma;
101
102 char *w_expr; ///< width expression string
103 char *h_expr; ///< height expression string
104
105 int out_h_chr_pos;
106 int out_v_chr_pos;
107 int in_h_chr_pos;
108 int in_v_chr_pos;
109
110 int force_original_aspect_ratio;
111
112 void *tmp;
113 size_t tmp_size;
114
115 zimg_image_format src_format, dst_format;
116 zimg_image_format alpha_src_format, alpha_dst_format;
117 zimg_graph_builder_params alpha_params, params;
118 zimg_filter_graph *alpha_graph, *graph;
119
120 enum AVColorSpace in_colorspace, out_colorspace;
121 enum AVColorTransferCharacteristic in_trc, out_trc;
122 enum AVColorPrimaries in_primaries, out_primaries;
123 enum AVColorRange in_range, out_range;
124 enum AVChromaLocation in_chromal, out_chromal;
125} ZScaleContext;
126
127static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
128{
129 ZScaleContext *s = ctx->priv;
130 int ret;
131
132 if (s->size_str && (s->w_expr || s->h_expr)) {
133 av_log(ctx, AV_LOG_ERROR,
134 "Size and width/height expressions cannot be set at the same time.\n");
135 return AVERROR(EINVAL);
136 }
137
138 if (s->w_expr && !s->h_expr)
139 FFSWAP(char *, s->w_expr, s->size_str);
140
141 if (s->size_str) {
142 char buf[32];
143 if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
144 av_log(ctx, AV_LOG_ERROR,
145 "Invalid size '%s'\n", s->size_str);
146 return ret;
147 }
148 snprintf(buf, sizeof(buf)-1, "%d", s->w);
149 av_opt_set(s, "w", buf, 0);
150 snprintf(buf, sizeof(buf)-1, "%d", s->h);
151 av_opt_set(s, "h", buf, 0);
152 }
153 if (!s->w_expr)
154 av_opt_set(s, "w", "iw", 0);
155 if (!s->h_expr)
156 av_opt_set(s, "h", "ih", 0);
157
158 return 0;
159}
160
161static int query_formats(AVFilterContext *ctx)
162{
163 static const enum AVPixelFormat pixel_fmts[] = {
164 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
165 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
166 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
167 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
168 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
169 AV_PIX_FMT_YUVJ411P,
170 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
171 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
172 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
173 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
174 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
175 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
176 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
177 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
178 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
179 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
180 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
181 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
182 AV_PIX_FMT_NONE
183 };
184 int ret;
185
186 ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->out_formats);
187 if (ret < 0)
188 return ret;
189 return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->in_formats);
190}
191
192static int config_props(AVFilterLink *outlink)
193{
194 AVFilterContext *ctx = outlink->src;
195 AVFilterLink *inlink = outlink->src->inputs[0];
196 ZScaleContext *s = ctx->priv;
197 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
198 const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
199 int64_t w, h;
200 double var_values[VARS_NB], res;
201 char *expr;
202 int ret;
203 int factor_w, factor_h;
204
205 var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
206 var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
207 var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
208 var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
209 var_values[VAR_A] = (double) inlink->w / inlink->h;
210 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
211 (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
212 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
213 var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
214 var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
215 var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
216 var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
217
218 /* evaluate width and height */
219 av_expr_parse_and_eval(&res, (expr = s->w_expr),
220 var_names, var_values,
221 NULL, NULL, NULL, NULL, NULL, 0, ctx);
222 s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
223 if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
224 var_names, var_values,
225 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
226 goto fail;
227 s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
228 /* evaluate again the width, as it may depend on the output height */
229 if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
230 var_names, var_values,
231 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
232 goto fail;
233 s->w = res;
234
235 w = s->w;
236 h = s->h;
237
238 /* Check if it is requested that the result has to be divisible by a some
239 * factor (w or h = -n with n being the factor). */
240 factor_w = 1;
241 factor_h = 1;
242 if (w < -1) {
243 factor_w = -w;
244 }
245 if (h < -1) {
246 factor_h = -h;
247 }
248
249 if (w < 0 && h < 0)
250 s->w = s->h = 0;
251
252 if (!(w = s->w))
253 w = inlink->w;
254 if (!(h = s->h))
255 h = inlink->h;
256
257 /* Make sure that the result is divisible by the factor we determined
258 * earlier. If no factor was set, it is nothing will happen as the default
259 * factor is 1 */
260 if (w < 0)
261 w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
262 if (h < 0)
263 h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
264
265 /* Note that force_original_aspect_ratio may overwrite the previous set
266 * dimensions so that it is not divisible by the set factors anymore. */
267 if (s->force_original_aspect_ratio) {
268 int tmp_w = av_rescale(h, inlink->w, inlink->h);
269 int tmp_h = av_rescale(w, inlink->h, inlink->w);
270
271 if (s->force_original_aspect_ratio == 1) {
272 w = FFMIN(tmp_w, w);
273 h = FFMIN(tmp_h, h);
274 } else {
275 w = FFMAX(tmp_w, w);
276 h = FFMAX(tmp_h, h);
277 }
278 }
279
280 if (w > INT_MAX || h > INT_MAX ||
281 (h * inlink->w) > INT_MAX ||
282 (w * inlink->h) > INT_MAX)
283 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
284
285 outlink->w = w;
286 outlink->h = h;
287
288 if (inlink->w == outlink->w &&
289 inlink->h == outlink->h &&
290 inlink->format == outlink->format)
291 ;
292 else {
293 }
294
295 if (inlink->sample_aspect_ratio.num){
296 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
297 } else
298 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
299
300 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s sar:%d/%d -> w:%d h:%d fmt:%s sar:%d/%d\n",
301 inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
302 inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,
303 outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
304 outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
305 return 0;
306
307fail:
308 av_log(ctx, AV_LOG_ERROR,
309 "Error when evaluating the expression '%s'.\n"
310 "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
311 expr, s->w_expr, s->h_expr);
312 return ret;
313}
314
315static int print_zimg_error(AVFilterContext *ctx)
316{
317 char err_msg[1024];
318 int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
319
320 av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
321
322 return err_code;
323}
324
325static int convert_chroma_location(enum AVChromaLocation chroma_location)
326{
327 switch (chroma_location) {
328 case AVCHROMA_LOC_UNSPECIFIED:
329 case AVCHROMA_LOC_LEFT:
330 return ZIMG_CHROMA_LEFT;
331 case AVCHROMA_LOC_CENTER:
332 return ZIMG_CHROMA_CENTER;
333 case AVCHROMA_LOC_TOPLEFT:
334 return ZIMG_CHROMA_TOP_LEFT;
335 case AVCHROMA_LOC_TOP:
336 return ZIMG_CHROMA_TOP;
337 case AVCHROMA_LOC_BOTTOMLEFT:
338 return ZIMG_CHROMA_BOTTOM_LEFT;
339 case AVCHROMA_LOC_BOTTOM:
340 return ZIMG_CHROMA_BOTTOM;
341 }
342 return ZIMG_CHROMA_LEFT;
343}
344
345static int convert_matrix(enum AVColorSpace colorspace)
346{
347 switch (colorspace) {
348 case AVCOL_SPC_RGB:
349 return ZIMG_MATRIX_RGB;
350 case AVCOL_SPC_BT709:
351 return ZIMG_MATRIX_709;
352 case AVCOL_SPC_UNSPECIFIED:
353 return ZIMG_MATRIX_UNSPECIFIED;
354 case AVCOL_SPC_BT470BG:
355 return ZIMG_MATRIX_470BG;
356 case AVCOL_SPC_SMPTE170M:
357 return ZIMG_MATRIX_170M;
358 case AVCOL_SPC_YCGCO:
359 return ZIMG_MATRIX_YCGCO;
360 case AVCOL_SPC_BT2020_NCL:
361 return ZIMG_MATRIX_2020_NCL;
362 case AVCOL_SPC_BT2020_CL:
363 return ZIMG_MATRIX_2020_CL;
364 }
365 return ZIMG_MATRIX_UNSPECIFIED;
366}
367
368static int convert_trc(enum AVColorTransferCharacteristic color_trc)
369{
370 switch (color_trc) {
371 case AVCOL_TRC_UNSPECIFIED:
372 return ZIMG_TRANSFER_UNSPECIFIED;
373 case AVCOL_TRC_BT709:
374 return ZIMG_TRANSFER_709;
375 case AVCOL_TRC_SMPTE170M:
376 return ZIMG_TRANSFER_601;
377 case AVCOL_TRC_LINEAR:
378 return ZIMG_TRANSFER_LINEAR;
379 case AVCOL_TRC_BT2020_10:
380 return ZIMG_TRANSFER_2020_10;
381 case AVCOL_TRC_BT2020_12:
382 return ZIMG_TRANSFER_2020_12;
383 case AVCOL_TRC_SMPTE2084:
384 return ZIMG_TRANSFER_ST2084;
385 case AVCOL_TRC_ARIB_STD_B67:
386 return ZIMG_TRANSFER_ARIB_B67;
387 case AVCOL_TRC_IEC61966_2_1:
388 return ZIMG_TRANSFER_IEC_61966_2_1;
389 }
390 return ZIMG_TRANSFER_UNSPECIFIED;
391}
392
393static int convert_primaries(enum AVColorPrimaries color_primaries)
394{
395 switch (color_primaries) {
396 case AVCOL_PRI_UNSPECIFIED:
397 return ZIMG_PRIMARIES_UNSPECIFIED;
398 case AVCOL_PRI_BT709:
399 return ZIMG_PRIMARIES_709;
400 case AVCOL_PRI_SMPTE170M:
401 return ZIMG_PRIMARIES_170M;
402 case AVCOL_PRI_SMPTE240M:
403 return ZIMG_PRIMARIES_240M;
404 case AVCOL_PRI_BT2020:
405 return ZIMG_PRIMARIES_2020;
406 case AVCOL_PRI_SMPTE432:
407 return ZIMG_PRIMARIES_ST432_1;
408 }
409 return ZIMG_PRIMARIES_UNSPECIFIED;
410}
411
412static int convert_range(enum AVColorRange color_range)
413{
414 switch (color_range) {
415 case AVCOL_RANGE_UNSPECIFIED:
416 case AVCOL_RANGE_MPEG:
417 return ZIMG_RANGE_LIMITED;
418 case AVCOL_RANGE_JPEG:
419 return ZIMG_RANGE_FULL;
420 }
421 return ZIMG_RANGE_LIMITED;
422}
423
424static int filter_frame(AVFilterLink *link, AVFrame *in)
425{
426 ZScaleContext *s = link->dst->priv;
427 AVFilterLink *outlink = link->dst->outputs[0];
428 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
429 const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
430 zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
431 zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
432 char buf[32];
433 size_t tmp_size;
434 int ret = 0, plane;
435 AVFrame *out;
436
437 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
438 if (!out) {
439 av_frame_free(&in);
440 return AVERROR(ENOMEM);
441 }
442
443 av_frame_copy_props(out, in);
444 out->width = outlink->w;
445 out->height = outlink->h;
446
447 if( in->width != link->w
448 || in->height != link->h
449 || in->format != link->format
450 || s->in_colorspace != in->colorspace
451 || s->in_trc != in->color_trc
452 || s->in_primaries != in->color_primaries
453 || s->in_range != in->color_range
454 || s->out_colorspace != out->colorspace
455 || s->out_trc != out->color_trc
456 || s->out_primaries != out->color_primaries
457 || s->out_range != out->color_range
458 || s->in_chromal != in->chroma_location
459 || s->out_chromal != out->chroma_location) {
460 snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
461 av_opt_set(s, "w", buf, 0);
462 snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
463 av_opt_set(s, "h", buf, 0);
464
465 link->dst->inputs[0]->format = in->format;
466 link->dst->inputs[0]->w = in->width;
467 link->dst->inputs[0]->h = in->height;
468
469 if ((ret = config_props(outlink)) < 0) {
470 av_frame_free(&in);
471 av_frame_free(&out);
472 return ret;
473 }
474
475 zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
476 zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
477 zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
478
479 s->params.dither_type = s->dither;
480 s->params.cpu_type = ZIMG_CPU_AUTO;
481 s->params.resample_filter = s->filter;
482 s->params.resample_filter_uv = s->filter;
483 s->params.nominal_peak_luminance = s->nominal_peak_luminance;
484 s->params.allow_approximate_gamma = s->approximate_gamma;
485
486 s->src_format.width = in->width;
487 s->src_format.height = in->height;
488 s->src_format.subsample_w = desc->log2_chroma_w;
489 s->src_format.subsample_h = desc->log2_chroma_h;
490 s->src_format.depth = desc->comp[0].depth;
491 s->src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
492 s->src_format.color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
493 s->src_format.matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : s->colorspace_in == -1 ? convert_matrix(in->colorspace) : s->colorspace_in;
494 s->src_format.transfer_characteristics = s->trc_in == - 1 ? convert_trc(in->color_trc) : s->trc_in;
495 s->src_format.color_primaries = s->primaries_in == -1 ? convert_primaries(in->color_primaries) : s->primaries_in;
496 s->src_format.pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : s->range_in == -1 ? convert_range(in->color_range) : s->range_in;
497 s->src_format.chroma_location = s->chromal_in == -1 ? convert_chroma_location(in->chroma_location) : s->chromal_in;
498
499 s->dst_format.width = out->width;
500 s->dst_format.height = out->height;
501 s->dst_format.subsample_w = odesc->log2_chroma_w;
502 s->dst_format.subsample_h = odesc->log2_chroma_h;
503 s->dst_format.depth = odesc->comp[0].depth;
504 s->dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
505 s->dst_format.color_family = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
506 s->dst_format.matrix_coefficients = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : s->colorspace == -1 ? convert_matrix(out->colorspace) : s->colorspace;
507 s->dst_format.transfer_characteristics = s->trc == -1 ? convert_trc(out->color_trc) : s->trc;
508 s->dst_format.color_primaries = s->primaries == -1 ? convert_primaries(out->color_primaries) : s->primaries;
509 s->dst_format.pixel_range = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : s->range == -1 ? convert_range(out->color_range) : s->range;
510 s->dst_format.chroma_location = s->chromal == -1 ? convert_chroma_location(out->chroma_location) : s->chromal;
511
512 if (s->colorspace != -1)
513 out->colorspace = (int)s->dst_format.matrix_coefficients;
514
515 if (s->primaries != -1)
516 out->color_primaries = (int)s->dst_format.color_primaries;
517
518 if (s->range != -1)
519 out->color_range = (int)s->dst_format.pixel_range + 1;
520
521 if (s->trc != -1)
522 out->color_trc = (int)s->dst_format.transfer_characteristics;
523
524 if (s->chromal != -1)
525 out->chroma_location = (int)s->dst_format.chroma_location - 1;
526
527 zimg_filter_graph_free(s->graph);
528 s->graph = zimg_filter_graph_build(&s->src_format, &s->dst_format, &s->params);
529 if (!s->graph) {
530 ret = print_zimg_error(link->dst);
531 goto fail;
532 }
533
534 if ((ret = zimg_filter_graph_get_tmp_size(s->graph, &tmp_size))) {
535 ret = print_zimg_error(link->dst);
536 goto fail;
537 }
538
539 if (tmp_size > s->tmp_size) {
540 av_freep(&s->tmp);
541 s->tmp = av_malloc(tmp_size);
542 if (!s->tmp) {
543 ret = AVERROR(ENOMEM);
544 goto fail;
545 }
546 s->tmp_size = tmp_size;
547 }
548
549 s->in_colorspace = in->colorspace;
550 s->in_trc = in->color_trc;
551 s->in_primaries = in->color_primaries;
552 s->in_range = in->color_range;
553 s->out_colorspace = out->colorspace;
554 s->out_trc = out->color_trc;
555 s->out_primaries = out->color_primaries;
556 s->out_range = out->color_range;
557
558 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
559 zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
560 zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
561 zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
562
563 s->alpha_params.dither_type = s->dither;
564 s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
565 s->alpha_params.resample_filter = s->filter;
566
567 s->alpha_src_format.width = in->width;
568 s->alpha_src_format.height = in->height;
569 s->alpha_src_format.depth = desc->comp[0].depth;
570 s->alpha_src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
571 s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
572
573 s->alpha_dst_format.width = out->width;
574 s->alpha_dst_format.height = out->height;
575 s->alpha_dst_format.depth = odesc->comp[0].depth;
576 s->alpha_dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
577 s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
578
579 zimg_filter_graph_free(s->alpha_graph);
580 s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
581 if (!s->alpha_graph) {
582 ret = print_zimg_error(link->dst);
583 goto fail;
584 }
585 }
586 }
587
588 if (s->colorspace != -1)
589 out->colorspace = (int)s->dst_format.matrix_coefficients;
590
591 if (s->primaries != -1)
592 out->color_primaries = (int)s->dst_format.color_primaries;
593
594 if (s->range != -1)
595 out->color_range = (int)s->dst_format.pixel_range;
596
597 if (s->trc != -1)
598 out->color_trc = (int)s->dst_format.transfer_characteristics;
599
600 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
601 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
602 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
603 INT_MAX);
604
605 for (plane = 0; plane < 3; plane++) {
606 int p = desc->comp[plane].plane;
607 src_buf.plane[plane].data = in->data[p];
608 src_buf.plane[plane].stride = in->linesize[p];
609 src_buf.plane[plane].mask = -1;
610
611 p = odesc->comp[plane].plane;
612 dst_buf.plane[plane].data = out->data[p];
613 dst_buf.plane[plane].stride = out->linesize[p];
614 dst_buf.plane[plane].mask = -1;
615 }
616
617 ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
618 if (ret) {
619 print_zimg_error(link->dst);
620 goto fail;
621 }
622
623 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
624 src_buf.plane[0].data = in->data[3];
625 src_buf.plane[0].stride = in->linesize[3];
626 src_buf.plane[0].mask = -1;
627
628 dst_buf.plane[0].data = out->data[3];
629 dst_buf.plane[0].stride = out->linesize[3];
630 dst_buf.plane[0].mask = -1;
631
632 ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
633 if (ret) {
634 print_zimg_error(link->dst);
635 goto fail;
636 }
637 } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
638 int y;
639
640 for (y = 0; y < outlink->h; y++)
641 memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
642 }
643
644fail:
645 av_frame_free(&in);
646 if (ret) {
647 av_frame_free(&out);
648 return ret;
649 }
650
651 return ff_filter_frame(outlink, out);
652}
653
654static void uninit(AVFilterContext *ctx)
655{
656 ZScaleContext *s = ctx->priv;
657
658 zimg_filter_graph_free(s->graph);
659 av_freep(&s->tmp);
660 s->tmp_size = 0;
661}
662
663static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
664 char *res, int res_len, int flags)
665{
666 ZScaleContext *s = ctx->priv;
667 int ret;
668
669 if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
670 || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
671
672 int old_w = s->w;
673 int old_h = s->h;
674 AVFilterLink *outlink = ctx->outputs[0];
675
676 av_opt_set(s, cmd, args, 0);
677 if ((ret = config_props(outlink)) < 0) {
678 s->w = old_w;
679 s->h = old_h;
680 }
681 } else
682 ret = AVERROR(ENOSYS);
683
684 return ret;
685}
686
687#define OFFSET(x) offsetof(ZScaleContext, x)
688#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
689
690static const AVOption zscale_options[] = {
691 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
692 { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
693 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
694 { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
695 { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
696 { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
697 { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
698 { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
699 { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
700 { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
701 { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
702 { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
703 { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
704 { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
705 { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
706 { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
707 { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
708 { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
709 { "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
710 { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
711 { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
712 { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
713 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
714 { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
715 { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
716 { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
717 { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
718 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
719 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
720 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
721 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
722 { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
723 { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
724 { "smpte432", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST432_1}, 0, 0, FLAGS, "primaries" },
725 { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
726 { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
727 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
728 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
729 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
730 { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
731 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
732 { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
733 { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
734 { "smpte2084", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ST2084}, 0, 0, FLAGS, "transfer" },
735 { "iec61966-2-1", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_1},0, 0, FLAGS, "transfer" },
736 { "arib-std-b67", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ARIB_B67}, 0, 0, FLAGS, "transfer" },
737 { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
738 { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
739 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
740 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
741 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
742 { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
743 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
744 { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
745 { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
746 { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
747 { "rangein", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
748 { "rin", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
749 { "primariesin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
750 { "pin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
751 { "transferin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
752 { "tin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
753 { "matrixin", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
754 { "min", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
755 { "chromal", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
756 { "c", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
757 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "chroma" },
758 { "left", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_LEFT}, 0, 0, FLAGS, "chroma" },
759 { "center", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_CENTER}, 0, 0, FLAGS, "chroma" },
760 { "topleft", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP_LEFT}, 0, 0, FLAGS, "chroma" },
761 { "top", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP}, 0, 0, FLAGS, "chroma" },
762 { "bottomleft",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM_LEFT}, 0, 0, FLAGS, "chroma" },
763 { "bottom", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM}, 0, 0, FLAGS, "chroma" },
764 { "chromalin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
765 { "cin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
766 { "npl", "set nominal peak luminance", OFFSET(nominal_peak_luminance), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, 0, DBL_MAX, FLAGS },
767 { "agamma", "allow approximate gamma", OFFSET(approximate_gamma), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
768 { NULL }
769};
770
771static const AVClass zscale_class = {
772 .class_name = "zscale",
773 .item_name = av_default_item_name,
774 .option = zscale_options,
775 .version = LIBAVUTIL_VERSION_INT,
776 .category = AV_CLASS_CATEGORY_FILTER,
777};
778
779static const AVFilterPad avfilter_vf_zscale_inputs[] = {
780 {
781 .name = "default",
782 .type = AVMEDIA_TYPE_VIDEO,
783 .filter_frame = filter_frame,
784 },
785 { NULL }
786};
787
788static const AVFilterPad avfilter_vf_zscale_outputs[] = {
789 {
790 .name = "default",
791 .type = AVMEDIA_TYPE_VIDEO,
792 .config_props = config_props,
793 },
794 { NULL }
795};
796
797AVFilter ff_vf_zscale = {
798 .name = "zscale",
799 .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
800 .init_dict = init_dict,
801 .query_formats = query_formats,
802 .priv_size = sizeof(ZScaleContext),
803 .priv_class = &zscale_class,
804 .uninit = uninit,
805 .inputs = avfilter_vf_zscale_inputs,
806 .outputs = avfilter_vf_zscale_outputs,
807 .process_command = process_command,
808};
809
generated by cgit at 2024-05-18 08:44:54 (GMT)