2 * Copyright (c) 2015 Paul B Mahol
4 * This file is part of FFmpeg.
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.
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.
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
23 * zscale video filter using z.lib library
35 #include "libavutil/avstring.h"
36 #include "libavutil/eval.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/avassert.h"
45 static const char *const var_names[] = {
75 typedef struct ZScaleContext {
79 * New dimensions. Special values are:
80 * 0 = original width/height
81 * -1 = keep original aspect
82 * -N = try to keep aspect but make sure it is divisible by N
93 char *w_expr; ///< width expression string
94 char *h_expr; ///< height expression string
101 int force_original_aspect_ratio;
106 zimg_image_format src_format, dst_format;
107 zimg_image_format alpha_src_format, alpha_dst_format;
108 zimg_graph_builder_params alpha_params, params;
109 zimg_filter_graph *alpha_graph, *graph;
111 enum AVColorSpace in_colorspace, out_colorspace;
112 enum AVColorTransferCharacteristic in_trc, out_trc;
113 enum AVColorPrimaries in_primaries, out_primaries;
114 enum AVColorRange in_range, out_range;
117 static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
119 ZScaleContext *s = ctx->priv;
122 if (s->size_str && (s->w_expr || s->h_expr)) {
123 av_log(ctx, AV_LOG_ERROR,
124 "Size and width/height expressions cannot be set at the same time.\n");
125 return AVERROR(EINVAL);
128 if (s->w_expr && !s->h_expr)
129 FFSWAP(char *, s->w_expr, s->size_str);
133 if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
134 av_log(ctx, AV_LOG_ERROR,
135 "Invalid size '%s'\n", s->size_str);
138 snprintf(buf, sizeof(buf)-1, "%d", s->w);
139 av_opt_set(s, "w", buf, 0);
140 snprintf(buf, sizeof(buf)-1, "%d", s->h);
141 av_opt_set(s, "h", buf, 0);
144 av_opt_set(s, "w", "iw", 0);
146 av_opt_set(s, "h", "ih", 0);
151 static int query_formats(AVFilterContext *ctx)
153 static const enum AVPixelFormat pixel_fmts[] = {
154 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
155 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
156 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
157 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
158 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
160 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
161 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
162 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
163 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
164 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
165 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
166 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
167 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
168 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
169 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
170 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
171 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
176 ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->out_formats);
179 return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->in_formats);
182 static int config_props(AVFilterLink *outlink)
184 AVFilterContext *ctx = outlink->src;
185 AVFilterLink *inlink = outlink->src->inputs[0];
186 ZScaleContext *s = ctx->priv;
187 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
188 const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
190 double var_values[VARS_NB], res;
193 int factor_w, factor_h;
195 var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
196 var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
197 var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
198 var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
199 var_values[VAR_A] = (double) inlink->w / inlink->h;
200 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
201 (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
202 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
203 var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
204 var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
205 var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
206 var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
208 /* evaluate width and height */
209 av_expr_parse_and_eval(&res, (expr = s->w_expr),
210 var_names, var_values,
211 NULL, NULL, NULL, NULL, NULL, 0, ctx);
212 s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
213 if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
214 var_names, var_values,
215 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
217 s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
218 /* evaluate again the width, as it may depend on the output height */
219 if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
220 var_names, var_values,
221 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
228 /* Check if it is requested that the result has to be divisible by a some
229 * factor (w or h = -n with n being the factor). */
247 /* Make sure that the result is divisible by the factor we determined
248 * earlier. If no factor was set, it is nothing will happen as the default
251 w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
253 h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
255 /* Note that force_original_aspect_ratio may overwrite the previous set
256 * dimensions so that it is not divisible by the set factors anymore. */
257 if (s->force_original_aspect_ratio) {
258 int tmp_w = av_rescale(h, inlink->w, inlink->h);
259 int tmp_h = av_rescale(w, inlink->h, inlink->w);
261 if (s->force_original_aspect_ratio == 1) {
270 if (w > INT_MAX || h > INT_MAX ||
271 (h * inlink->w) > INT_MAX ||
272 (w * inlink->h) > INT_MAX)
273 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
278 if (inlink->w == outlink->w &&
279 inlink->h == outlink->h &&
280 inlink->format == outlink->format)
285 if (inlink->sample_aspect_ratio.num){
286 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
288 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
290 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",
291 inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
292 inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,
293 outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
294 outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
298 av_log(ctx, AV_LOG_ERROR,
299 "Error when evaluating the expression '%s'.\n"
300 "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
301 expr, s->w_expr, s->h_expr);
305 static int print_zimg_error(AVFilterContext *ctx)
308 int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
310 av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
315 static int convert_matrix(enum AVColorSpace colorspace)
317 switch (colorspace) {
319 return ZIMG_MATRIX_RGB;
320 case AVCOL_SPC_BT709:
321 return ZIMG_MATRIX_709;
322 case AVCOL_SPC_UNSPECIFIED:
323 return ZIMG_MATRIX_UNSPECIFIED;
324 case AVCOL_SPC_BT470BG:
325 return ZIMG_MATRIX_470BG;
326 case AVCOL_SPC_SMPTE170M:
327 return ZIMG_MATRIX_170M;
328 case AVCOL_SPC_YCGCO:
329 return ZIMG_MATRIX_YCGCO;
330 case AVCOL_SPC_BT2020_NCL:
331 return ZIMG_MATRIX_2020_NCL;
332 case AVCOL_SPC_BT2020_CL:
333 return ZIMG_MATRIX_2020_CL;
335 return ZIMG_MATRIX_UNSPECIFIED;
338 static int convert_trc(enum AVColorTransferCharacteristic color_trc)
341 case AVCOL_TRC_UNSPECIFIED:
342 return ZIMG_TRANSFER_UNSPECIFIED;
343 case AVCOL_TRC_BT709:
344 return ZIMG_TRANSFER_709;
345 case AVCOL_TRC_SMPTE170M:
346 return ZIMG_TRANSFER_601;
347 case AVCOL_TRC_LINEAR:
348 return ZIMG_TRANSFER_LINEAR;
349 case AVCOL_TRC_BT2020_10:
350 return ZIMG_TRANSFER_2020_10;
351 case AVCOL_TRC_BT2020_12:
352 return ZIMG_TRANSFER_2020_12;
354 return ZIMG_TRANSFER_UNSPECIFIED;
357 static int convert_primaries(enum AVColorPrimaries color_primaries)
359 switch (color_primaries) {
360 case AVCOL_PRI_UNSPECIFIED:
361 return ZIMG_PRIMARIES_UNSPECIFIED;
362 case AVCOL_PRI_BT709:
363 return ZIMG_PRIMARIES_709;
364 case AVCOL_PRI_SMPTE170M:
365 return ZIMG_PRIMARIES_170M;
366 case AVCOL_PRI_SMPTE240M:
367 return ZIMG_PRIMARIES_240M;
368 case AVCOL_PRI_BT2020:
369 return ZIMG_PRIMARIES_2020;
371 return ZIMG_PRIMARIES_UNSPECIFIED;
374 static int convert_range(enum AVColorRange color_range)
376 switch (color_range) {
377 case AVCOL_RANGE_UNSPECIFIED:
378 case AVCOL_RANGE_MPEG:
379 return ZIMG_RANGE_LIMITED;
380 case AVCOL_RANGE_JPEG:
381 return ZIMG_RANGE_FULL;
383 return ZIMG_RANGE_LIMITED;
386 static int filter_frame(AVFilterLink *link, AVFrame *in)
388 ZScaleContext *s = link->dst->priv;
389 AVFilterLink *outlink = link->dst->outputs[0];
390 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
391 const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
392 zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
393 zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
399 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
402 return AVERROR(ENOMEM);
405 av_frame_copy_props(out, in);
406 out->width = outlink->w;
407 out->height = outlink->h;
409 if( in->width != link->w
410 || in->height != link->h
411 || in->format != link->format
412 || s->in_colorspace != in->colorspace
413 || s->in_trc != in->color_trc
414 || s->in_primaries != in->color_primaries
415 || s->in_range != in->color_range
416 || s->out_colorspace != out->colorspace
417 || s->out_trc != out->color_trc
418 || s->out_primaries != out->color_primaries
419 || s->out_range != out->color_range) {
420 snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
421 av_opt_set(s, "w", buf, 0);
422 snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
423 av_opt_set(s, "h", buf, 0);
425 link->dst->inputs[0]->format = in->format;
426 link->dst->inputs[0]->w = in->width;
427 link->dst->inputs[0]->h = in->height;
429 if ((ret = config_props(outlink)) < 0) {
435 zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
436 zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
437 zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
439 s->params.dither_type = s->dither;
440 s->params.cpu_type = ZIMG_CPU_AUTO;
441 s->params.resample_filter = s->filter;
442 s->params.resample_filter_uv = s->filter;
444 s->src_format.width = in->width;
445 s->src_format.height = in->height;
446 s->src_format.subsample_w = desc->log2_chroma_w;
447 s->src_format.subsample_h = desc->log2_chroma_h;
448 s->src_format.depth = desc->comp[0].depth;
449 s->src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
450 s->src_format.color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
451 s->src_format.matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : convert_matrix(in->colorspace);
452 s->src_format.transfer_characteristics = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_TRANSFER_UNSPECIFIED : convert_trc(in->color_trc);
453 s->src_format.color_primaries = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_PRIMARIES_UNSPECIFIED : convert_primaries(in->color_primaries);
454 s->src_format.pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : convert_range(in->color_range);
456 s->dst_format.width = out->width;
457 s->dst_format.height = out->height;
458 s->dst_format.subsample_w = odesc->log2_chroma_w;
459 s->dst_format.subsample_h = odesc->log2_chroma_h;
460 s->dst_format.depth = odesc->comp[0].depth;
461 s->dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
462 s->dst_format.color_family = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
463 s->dst_format.matrix_coefficients = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : s->colorspace == -1 ? convert_matrix(out->colorspace) : s->colorspace;
464 s->dst_format.transfer_characteristics = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_TRANSFER_UNSPECIFIED : s->trc == -1 ? convert_trc(out->color_trc) : s->trc;
465 s->dst_format.color_primaries = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_PRIMARIES_UNSPECIFIED : s->primaries == -1 ? convert_primaries(out->color_primaries) : s->primaries;
466 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;
468 if (s->colorspace != -1)
469 out->colorspace = (int)s->dst_format.matrix_coefficients;
471 if (s->primaries != -1)
472 out->color_primaries = (int)s->dst_format.color_primaries;
475 out->color_range = (int)s->dst_format.pixel_range + 1;
478 out->color_trc = (int)s->dst_format.transfer_characteristics;
480 zimg_filter_graph_free(s->graph);
481 s->graph = zimg_filter_graph_build(&s->src_format, &s->dst_format, &s->params);
483 ret = print_zimg_error(link->dst);
487 if ((ret = zimg_filter_graph_get_tmp_size(s->graph, &tmp_size))) {
488 ret = print_zimg_error(link->dst);
492 if (tmp_size > s->tmp_size) {
494 s->tmp = av_malloc(tmp_size);
496 ret = AVERROR(ENOMEM);
499 s->tmp_size = tmp_size;
502 s->in_colorspace = in->colorspace;
503 s->in_trc = in->color_trc;
504 s->in_primaries = in->color_primaries;
505 s->in_range = in->color_range;
506 s->out_colorspace = out->colorspace;
507 s->out_trc = out->color_trc;
508 s->out_primaries = out->color_primaries;
509 s->out_range = out->color_range;
511 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
512 zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
513 zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
514 zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
516 s->alpha_params.dither_type = s->dither;
517 s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
518 s->alpha_params.resample_filter = s->filter;
520 s->alpha_src_format.width = in->width;
521 s->alpha_src_format.height = in->height;
522 s->alpha_src_format.depth = desc->comp[0].depth;
523 s->alpha_src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
524 s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
526 s->alpha_dst_format.width = out->width;
527 s->alpha_dst_format.height = out->height;
528 s->alpha_dst_format.depth = odesc->comp[0].depth;
529 s->alpha_dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
530 s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
532 zimg_filter_graph_free(s->alpha_graph);
533 s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
534 if (!s->alpha_graph) {
535 ret = print_zimg_error(link->dst);
541 if (s->colorspace != -1)
542 out->colorspace = (int)s->dst_format.matrix_coefficients;
544 if (s->primaries != -1)
545 out->color_primaries = (int)s->dst_format.color_primaries;
548 out->color_range = (int)s->dst_format.pixel_range;
551 out->color_trc = (int)s->dst_format.transfer_characteristics;
553 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
554 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
555 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
558 for (plane = 0; plane < 3; plane++) {
559 int p = desc->comp[plane].plane;
560 src_buf.plane[plane].data = in->data[p];
561 src_buf.plane[plane].stride = in->linesize[p];
562 src_buf.plane[plane].mask = -1;
564 p = odesc->comp[plane].plane;
565 dst_buf.plane[plane].data = out->data[p];
566 dst_buf.plane[plane].stride = out->linesize[p];
567 dst_buf.plane[plane].mask = -1;
570 ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
572 print_zimg_error(link->dst);
576 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
577 src_buf.plane[0].data = in->data[3];
578 src_buf.plane[0].stride = in->linesize[3];
579 src_buf.plane[0].mask = -1;
581 dst_buf.plane[0].data = out->data[3];
582 dst_buf.plane[0].stride = out->linesize[3];
583 dst_buf.plane[0].mask = -1;
585 ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
587 print_zimg_error(link->dst);
590 } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
593 for (y = 0; y < outlink->h; y++)
594 memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
604 return ff_filter_frame(outlink, out);
607 static void uninit(AVFilterContext *ctx)
609 ZScaleContext *s = ctx->priv;
611 zimg_filter_graph_free(s->graph);
616 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
617 char *res, int res_len, int flags)
619 ZScaleContext *s = ctx->priv;
622 if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
623 || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
627 AVFilterLink *outlink = ctx->outputs[0];
629 av_opt_set(s, cmd, args, 0);
630 if ((ret = config_props(outlink)) < 0) {
635 ret = AVERROR(ENOSYS);
640 #define OFFSET(x) offsetof(ZScaleContext, x)
641 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
643 static const AVOption zscale_options[] = {
644 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
645 { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
646 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
647 { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
648 { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
649 { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
650 { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
651 { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
652 { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
653 { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
654 { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
655 { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
656 { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
657 { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
658 { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
659 { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
660 { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
661 { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
662 { "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
663 { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
664 { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
665 { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
666 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
667 { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
668 { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
669 { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_2020, FLAGS, "primaries" },
670 { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_2020, FLAGS, "primaries" },
671 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
672 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
673 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
674 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
675 { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
676 { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
677 { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_2020_12, FLAGS, "transfer" },
678 { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_2020_12, FLAGS, "transfer" },
679 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
680 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
681 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
682 { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
683 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
684 { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
685 { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
686 { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
687 { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
688 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
689 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
690 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
691 { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
692 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
693 { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
694 { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
695 { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
699 static const AVClass zscale_class = {
700 .class_name = "zscale",
701 .item_name = av_default_item_name,
702 .option = zscale_options,
703 .version = LIBAVUTIL_VERSION_INT,
704 .category = AV_CLASS_CATEGORY_FILTER,
707 static const AVFilterPad avfilter_vf_zscale_inputs[] = {
710 .type = AVMEDIA_TYPE_VIDEO,
711 .filter_frame = filter_frame,
716 static const AVFilterPad avfilter_vf_zscale_outputs[] = {
719 .type = AVMEDIA_TYPE_VIDEO,
720 .config_props = config_props,
725 AVFilter ff_vf_zscale = {
727 .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
728 .init_dict = init_dict,
729 .query_formats = query_formats,
730 .priv_size = sizeof(ZScaleContext),
731 .priv_class = &zscale_class,
733 .inputs = avfilter_vf_zscale_inputs,
734 .outputs = avfilter_vf_zscale_outputs,
735 .process_command = process_command,