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
36 #include "libavutil/avstring.h"
37 #include "libavutil/eval.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/mathematics.h"
41 #include "libavutil/opt.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/imgutils.h"
45 #include "libavutil/avassert.h"
47 #define ZIMG_ALIGNMENT 32
49 static const char *const var_names[] = {
79 typedef struct ZScaleContext {
83 * New dimensions. Special values are:
84 * 0 = original width/height
85 * -1 = keep original aspect
86 * -N = try to keep aspect but make sure it is divisible by N
102 double nominal_peak_luminance;
103 int approximate_gamma;
107 char *w_expr; ///< width expression string
108 char *h_expr; ///< height expression string
115 int force_original_aspect_ratio;
120 zimg_image_format src_format, dst_format;
121 zimg_image_format alpha_src_format, alpha_dst_format;
122 zimg_graph_builder_params alpha_params, params;
123 zimg_filter_graph *alpha_graph, *graph;
125 enum AVColorSpace in_colorspace, out_colorspace;
126 enum AVColorTransferCharacteristic in_trc, out_trc;
127 enum AVColorPrimaries in_primaries, out_primaries;
128 enum AVColorRange in_range, out_range;
129 enum AVChromaLocation in_chromal, out_chromal;
132 static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
134 ZScaleContext *s = ctx->priv;
137 if (s->size_str && (s->w_expr || s->h_expr)) {
138 av_log(ctx, AV_LOG_ERROR,
139 "Size and width/height expressions cannot be set at the same time.\n");
140 return AVERROR(EINVAL);
143 if (s->w_expr && !s->h_expr)
144 FFSWAP(char *, s->w_expr, s->size_str);
148 if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
149 av_log(ctx, AV_LOG_ERROR,
150 "Invalid size '%s'\n", s->size_str);
153 snprintf(buf, sizeof(buf)-1, "%d", s->w);
154 av_opt_set(s, "w", buf, 0);
155 snprintf(buf, sizeof(buf)-1, "%d", s->h);
156 av_opt_set(s, "h", buf, 0);
159 av_opt_set(s, "w", "iw", 0);
161 av_opt_set(s, "h", "ih", 0);
166 static int query_formats(AVFilterContext *ctx)
168 static const enum AVPixelFormat pixel_fmts[] = {
169 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
170 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
171 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
172 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
173 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
175 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
176 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
177 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
178 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
179 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
180 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
181 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
182 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
183 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
184 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
185 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
186 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
187 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
192 ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->outcfg.formats);
195 return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->incfg.formats);
198 static int config_props(AVFilterLink *outlink)
200 AVFilterContext *ctx = outlink->src;
201 AVFilterLink *inlink = outlink->src->inputs[0];
202 ZScaleContext *s = ctx->priv;
203 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
204 const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
206 double var_values[VARS_NB], res;
209 int factor_w, factor_h;
211 var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
212 var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
213 var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
214 var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
215 var_values[VAR_A] = (double) inlink->w / inlink->h;
216 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
217 (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
218 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
219 var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
220 var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
221 var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
222 var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
224 /* evaluate width and height */
225 av_expr_parse_and_eval(&res, (expr = s->w_expr),
226 var_names, var_values,
227 NULL, NULL, NULL, NULL, NULL, 0, ctx);
228 s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
229 if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
230 var_names, var_values,
231 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
233 s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
234 /* evaluate again the width, as it may depend on the output height */
235 if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
236 var_names, var_values,
237 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
244 /* Check if it is requested that the result has to be divisible by a some
245 * factor (w or h = -n with n being the factor). */
263 /* Make sure that the result is divisible by the factor we determined
264 * earlier. If no factor was set, it is nothing will happen as the default
267 w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
269 h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
271 /* Note that force_original_aspect_ratio may overwrite the previous set
272 * dimensions so that it is not divisible by the set factors anymore. */
273 if (s->force_original_aspect_ratio) {
274 int tmp_w = av_rescale(h, inlink->w, inlink->h);
275 int tmp_h = av_rescale(w, inlink->h, inlink->w);
277 if (s->force_original_aspect_ratio == 1) {
286 if (w > INT_MAX || h > INT_MAX ||
287 (h * inlink->w) > INT_MAX ||
288 (w * inlink->h) > INT_MAX)
289 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
294 if (inlink->w == outlink->w &&
295 inlink->h == outlink->h &&
296 inlink->format == outlink->format)
301 if (inlink->sample_aspect_ratio.num){
302 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
304 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
306 av_log(ctx, AV_LOG_TRACE, "w:%d h:%d fmt:%s sar:%d/%d -> w:%d h:%d fmt:%s sar:%d/%d\n",
307 inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
308 inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,
309 outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
310 outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
314 av_log(ctx, AV_LOG_ERROR,
315 "Error when evaluating the expression '%s'.\n"
316 "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
317 expr, s->w_expr, s->h_expr);
321 static int print_zimg_error(AVFilterContext *ctx)
324 int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
326 av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
328 return AVERROR_EXTERNAL;
331 static int convert_chroma_location(enum AVChromaLocation chroma_location)
333 switch (chroma_location) {
334 case AVCHROMA_LOC_UNSPECIFIED:
335 case AVCHROMA_LOC_LEFT:
336 return ZIMG_CHROMA_LEFT;
337 case AVCHROMA_LOC_CENTER:
338 return ZIMG_CHROMA_CENTER;
339 case AVCHROMA_LOC_TOPLEFT:
340 return ZIMG_CHROMA_TOP_LEFT;
341 case AVCHROMA_LOC_TOP:
342 return ZIMG_CHROMA_TOP;
343 case AVCHROMA_LOC_BOTTOMLEFT:
344 return ZIMG_CHROMA_BOTTOM_LEFT;
345 case AVCHROMA_LOC_BOTTOM:
346 return ZIMG_CHROMA_BOTTOM;
348 return ZIMG_CHROMA_LEFT;
351 static int convert_matrix(enum AVColorSpace colorspace)
353 switch (colorspace) {
355 return ZIMG_MATRIX_RGB;
356 case AVCOL_SPC_BT709:
357 return ZIMG_MATRIX_709;
358 case AVCOL_SPC_UNSPECIFIED:
359 return ZIMG_MATRIX_UNSPECIFIED;
361 return ZIMG_MATRIX_FCC;
362 case AVCOL_SPC_BT470BG:
363 return ZIMG_MATRIX_470BG;
364 case AVCOL_SPC_SMPTE170M:
365 return ZIMG_MATRIX_170M;
366 case AVCOL_SPC_SMPTE240M:
367 return ZIMG_MATRIX_240M;
368 case AVCOL_SPC_YCGCO:
369 return ZIMG_MATRIX_YCGCO;
370 case AVCOL_SPC_BT2020_NCL:
371 return ZIMG_MATRIX_2020_NCL;
372 case AVCOL_SPC_BT2020_CL:
373 return ZIMG_MATRIX_2020_CL;
374 case AVCOL_SPC_CHROMA_DERIVED_NCL:
375 return ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL;
376 case AVCOL_SPC_CHROMA_DERIVED_CL:
377 return ZIMG_MATRIX_CHROMATICITY_DERIVED_CL;
378 case AVCOL_SPC_ICTCP:
379 return ZIMG_MATRIX_ICTCP;
381 return ZIMG_MATRIX_UNSPECIFIED;
384 static int convert_trc(enum AVColorTransferCharacteristic color_trc)
387 case AVCOL_TRC_UNSPECIFIED:
388 return ZIMG_TRANSFER_UNSPECIFIED;
389 case AVCOL_TRC_BT709:
390 return ZIMG_TRANSFER_709;
391 case AVCOL_TRC_GAMMA22:
392 return ZIMG_TRANSFER_470_M;
393 case AVCOL_TRC_GAMMA28:
394 return ZIMG_TRANSFER_470_BG;
395 case AVCOL_TRC_SMPTE170M:
396 return ZIMG_TRANSFER_601;
397 case AVCOL_TRC_SMPTE240M:
398 return ZIMG_TRANSFER_240M;
399 case AVCOL_TRC_LINEAR:
400 return ZIMG_TRANSFER_LINEAR;
402 return ZIMG_TRANSFER_LOG_100;
403 case AVCOL_TRC_LOG_SQRT:
404 return ZIMG_TRANSFER_LOG_316;
405 case AVCOL_TRC_IEC61966_2_4:
406 return ZIMG_TRANSFER_IEC_61966_2_4;
407 case AVCOL_TRC_BT2020_10:
408 return ZIMG_TRANSFER_2020_10;
409 case AVCOL_TRC_BT2020_12:
410 return ZIMG_TRANSFER_2020_12;
411 case AVCOL_TRC_SMPTE2084:
412 return ZIMG_TRANSFER_ST2084;
413 case AVCOL_TRC_ARIB_STD_B67:
414 return ZIMG_TRANSFER_ARIB_B67;
415 case AVCOL_TRC_IEC61966_2_1:
416 return ZIMG_TRANSFER_IEC_61966_2_1;
418 return ZIMG_TRANSFER_UNSPECIFIED;
421 static int convert_primaries(enum AVColorPrimaries color_primaries)
423 switch (color_primaries) {
424 case AVCOL_PRI_UNSPECIFIED:
425 return ZIMG_PRIMARIES_UNSPECIFIED;
426 case AVCOL_PRI_BT709:
427 return ZIMG_PRIMARIES_709;
428 case AVCOL_PRI_BT470M:
429 return ZIMG_PRIMARIES_470_M;
430 case AVCOL_PRI_BT470BG:
431 return ZIMG_PRIMARIES_470_BG;
432 case AVCOL_PRI_SMPTE170M:
433 return ZIMG_PRIMARIES_170M;
434 case AVCOL_PRI_SMPTE240M:
435 return ZIMG_PRIMARIES_240M;
437 return ZIMG_PRIMARIES_FILM;
438 case AVCOL_PRI_BT2020:
439 return ZIMG_PRIMARIES_2020;
440 case AVCOL_PRI_SMPTE428:
441 return ZIMG_PRIMARIES_ST428;
442 case AVCOL_PRI_SMPTE431:
443 return ZIMG_PRIMARIES_ST431_2;
444 case AVCOL_PRI_SMPTE432:
445 return ZIMG_PRIMARIES_ST432_1;
446 case AVCOL_PRI_JEDEC_P22:
447 return ZIMG_PRIMARIES_EBU3213_E;
449 return ZIMG_PRIMARIES_UNSPECIFIED;
452 static int convert_range(enum AVColorRange color_range)
454 switch (color_range) {
455 case AVCOL_RANGE_UNSPECIFIED:
456 case AVCOL_RANGE_MPEG:
457 return ZIMG_RANGE_LIMITED;
458 case AVCOL_RANGE_JPEG:
459 return ZIMG_RANGE_FULL;
461 return ZIMG_RANGE_LIMITED;
464 static void format_init(zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc,
465 int colorspace, int primaries, int transfer, int range, int location)
467 format->width = frame->width;
468 format->height = frame->height;
469 format->subsample_w = desc->log2_chroma_w;
470 format->subsample_h = desc->log2_chroma_h;
471 format->depth = desc->comp[0].depth;
472 format->pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
473 format->color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
474 format->matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : colorspace == -1 ? convert_matrix(frame->colorspace) : colorspace;
475 format->color_primaries = primaries == -1 ? convert_primaries(frame->color_primaries) : primaries;
476 format->transfer_characteristics = transfer == - 1 ? convert_trc(frame->color_trc) : transfer;
477 format->pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : range == -1 ? convert_range(frame->color_range) : range;
478 format->chroma_location = location == -1 ? convert_chroma_location(frame->chroma_location) : location;
481 static int graph_build(zimg_filter_graph **graph, zimg_graph_builder_params *params,
482 zimg_image_format *src_format, zimg_image_format *dst_format,
483 void **tmp, size_t *tmp_size)
488 zimg_filter_graph_free(*graph);
489 *graph = zimg_filter_graph_build(src_format, dst_format, params);
491 return print_zimg_error(NULL);
493 ret = zimg_filter_graph_get_tmp_size(*graph, &size);
495 return print_zimg_error(NULL);
497 if (size > *tmp_size) {
499 *tmp = av_malloc(size);
501 return AVERROR(ENOMEM);
509 static int realign_frame(const AVPixFmtDescriptor *desc, AVFrame **frame)
511 AVFrame *aligned = NULL;
514 /* Realign any unaligned input frame. */
515 for (plane = 0; plane < 3; plane++) {
516 int p = desc->comp[plane].plane;
517 if ((uintptr_t)(*frame)->data[p] % ZIMG_ALIGNMENT || (*frame)->linesize[p] % ZIMG_ALIGNMENT) {
518 if (!(aligned = av_frame_alloc())) {
519 ret = AVERROR(ENOMEM);
523 aligned->format = (*frame)->format;
524 aligned->width = (*frame)->width;
525 aligned->height = (*frame)->height;
527 if ((ret = av_frame_get_buffer(aligned, ZIMG_ALIGNMENT)) < 0)
530 if ((ret = av_frame_copy(aligned, *frame)) < 0)
533 if ((ret = av_frame_copy_props(aligned, *frame)) < 0)
536 av_frame_free(frame);
543 av_frame_free(&aligned);
547 static int filter_frame(AVFilterLink *link, AVFrame *in)
549 ZScaleContext *s = link->dst->priv;
550 AVFilterLink *outlink = link->dst->outputs[0];
551 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
552 const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
553 zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
554 zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
559 if ((ret = realign_frame(desc, &in)) < 0)
562 if (!(out = ff_get_video_buffer(outlink, outlink->w, outlink->h))) {
563 ret = AVERROR(ENOMEM);
567 av_frame_copy_props(out, in);
568 out->width = outlink->w;
569 out->height = outlink->h;
571 if( in->width != link->w
572 || in->height != link->h
573 || in->format != link->format
574 || s->in_colorspace != in->colorspace
575 || s->in_trc != in->color_trc
576 || s->in_primaries != in->color_primaries
577 || s->in_range != in->color_range
578 || s->out_colorspace != out->colorspace
579 || s->out_trc != out->color_trc
580 || s->out_primaries != out->color_primaries
581 || s->out_range != out->color_range
582 || s->in_chromal != in->chroma_location
583 || s->out_chromal != out->chroma_location) {
584 snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
585 av_opt_set(s, "w", buf, 0);
586 snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
587 av_opt_set(s, "h", buf, 0);
589 link->dst->inputs[0]->format = in->format;
590 link->dst->inputs[0]->w = in->width;
591 link->dst->inputs[0]->h = in->height;
593 if ((ret = config_props(outlink)) < 0)
596 zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
597 zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
598 zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
600 s->params.dither_type = s->dither;
601 s->params.cpu_type = ZIMG_CPU_AUTO;
602 s->params.resample_filter = s->filter;
603 s->params.resample_filter_uv = s->filter;
604 s->params.nominal_peak_luminance = s->nominal_peak_luminance;
605 s->params.allow_approximate_gamma = s->approximate_gamma;
606 s->params.filter_param_a = s->params.filter_param_a_uv = s->param_a;
607 s->params.filter_param_b = s->params.filter_param_b_uv = s->param_b;
609 format_init(&s->src_format, in, desc, s->colorspace_in,
610 s->primaries_in, s->trc_in, s->range_in, s->chromal_in);
611 format_init(&s->dst_format, out, odesc, s->colorspace,
612 s->primaries, s->trc, s->range, s->chromal);
614 if (s->colorspace != -1)
615 out->colorspace = (int)s->dst_format.matrix_coefficients;
617 if (s->primaries != -1)
618 out->color_primaries = (int)s->dst_format.color_primaries;
621 out->color_range = (int)s->dst_format.pixel_range + 1;
624 out->color_trc = (int)s->dst_format.transfer_characteristics;
626 if (s->chromal != -1)
627 out->chroma_location = (int)s->dst_format.chroma_location - 1;
629 ret = graph_build(&s->graph, &s->params, &s->src_format, &s->dst_format,
630 &s->tmp, &s->tmp_size);
634 s->in_colorspace = in->colorspace;
635 s->in_trc = in->color_trc;
636 s->in_primaries = in->color_primaries;
637 s->in_range = in->color_range;
638 s->out_colorspace = out->colorspace;
639 s->out_trc = out->color_trc;
640 s->out_primaries = out->color_primaries;
641 s->out_range = out->color_range;
643 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
644 zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
645 zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
646 zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
648 s->alpha_params.dither_type = s->dither;
649 s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
650 s->alpha_params.resample_filter = s->filter;
652 s->alpha_src_format.width = in->width;
653 s->alpha_src_format.height = in->height;
654 s->alpha_src_format.depth = desc->comp[0].depth;
655 s->alpha_src_format.pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
656 s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
658 s->alpha_dst_format.width = out->width;
659 s->alpha_dst_format.height = out->height;
660 s->alpha_dst_format.depth = odesc->comp[0].depth;
661 s->alpha_dst_format.pixel_type = (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
662 s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
664 zimg_filter_graph_free(s->alpha_graph);
665 s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
666 if (!s->alpha_graph) {
667 ret = print_zimg_error(link->dst);
673 if (s->colorspace != -1)
674 out->colorspace = (int)s->dst_format.matrix_coefficients;
676 if (s->primaries != -1)
677 out->color_primaries = (int)s->dst_format.color_primaries;
680 out->color_range = (int)s->dst_format.pixel_range;
683 out->color_trc = (int)s->dst_format.transfer_characteristics;
685 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
686 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
687 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
690 for (plane = 0; plane < 3; plane++) {
691 int p = desc->comp[plane].plane;
692 src_buf.plane[plane].data = in->data[p];
693 src_buf.plane[plane].stride = in->linesize[p];
694 src_buf.plane[plane].mask = -1;
696 p = odesc->comp[plane].plane;
697 dst_buf.plane[plane].data = out->data[p];
698 dst_buf.plane[plane].stride = out->linesize[p];
699 dst_buf.plane[plane].mask = -1;
702 ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
704 ret = print_zimg_error(link->dst);
708 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
709 src_buf.plane[0].data = in->data[3];
710 src_buf.plane[0].stride = in->linesize[3];
711 src_buf.plane[0].mask = -1;
713 dst_buf.plane[0].data = out->data[3];
714 dst_buf.plane[0].stride = out->linesize[3];
715 dst_buf.plane[0].mask = -1;
717 ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
719 ret = print_zimg_error(link->dst);
722 } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
725 if (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) {
726 for (y = 0; y < out->height; y++) {
727 for (x = 0; x < out->width; x++) {
728 AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
733 for (y = 0; y < outlink->h; y++)
734 memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
745 return ff_filter_frame(outlink, out);
748 static av_cold void uninit(AVFilterContext *ctx)
750 ZScaleContext *s = ctx->priv;
752 zimg_filter_graph_free(s->graph);
753 zimg_filter_graph_free(s->alpha_graph);
758 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
759 char *res, int res_len, int flags)
761 ZScaleContext *s = ctx->priv;
764 if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
765 || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
769 AVFilterLink *outlink = ctx->outputs[0];
771 av_opt_set(s, cmd, args, 0);
772 if ((ret = config_props(outlink)) < 0) {
777 ret = AVERROR(ENOSYS);
782 #define OFFSET(x) offsetof(ZScaleContext, x)
783 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
784 #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
786 static const AVOption zscale_options[] = {
787 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
788 { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
789 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
790 { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = TFLAGS },
791 { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
792 { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
793 { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
794 { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
795 { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
796 { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
797 { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
798 { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
799 { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
800 { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
801 { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
802 { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
803 { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
804 { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
805 { "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
806 { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
807 { "out_range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
808 { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
809 { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
810 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
811 { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
812 { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
813 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
814 { "tv", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
815 { "pc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
816 { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
817 { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
818 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
819 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
820 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
821 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
822 { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
823 { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
824 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
825 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
826 { "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_M}, 0, 0, FLAGS, "primaries" },
827 { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_BG}, 0, 0, FLAGS, "primaries" },
828 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
829 { "smpte240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
830 { "film", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_FILM}, 0, 0, FLAGS, "primaries" },
831 { "bt2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
832 { "smpte428", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST428}, 0, 0, FLAGS, "primaries" },
833 { "smpte431", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST431_2}, 0, 0, FLAGS, "primaries" },
834 { "smpte432", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST432_1}, 0, 0, FLAGS, "primaries" },
835 { "jedec-p22", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_EBU3213_E}, 0, 0, FLAGS, "primaries" },
836 { "ebu3213", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_EBU3213_E}, 0, 0, FLAGS, "primaries" },
837 { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
838 { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
839 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
840 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
841 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
842 { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
843 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
844 { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
845 { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
846 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
847 { "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_M}, 0, 0, FLAGS, "transfer" },
848 { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_BG}, 0, 0, FLAGS, "transfer" },
849 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
850 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
851 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
852 { "log100", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_100}, 0, 0, FLAGS, "transfer" },
853 { "log316", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_316}, 0, 0, FLAGS, "transfer" },
854 { "bt2020-10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
855 { "bt2020-12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
856 { "smpte2084", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ST2084}, 0, 0, FLAGS, "transfer" },
857 { "iec61966-2-4", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_4},0, 0, FLAGS, "transfer" },
858 { "iec61966-2-1", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_1},0, 0, FLAGS, "transfer" },
859 { "arib-std-b67", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ARIB_B67}, 0, 0, FLAGS, "transfer" },
860 { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
861 { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
862 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
863 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
864 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
865 { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
866 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
867 { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
868 { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
869 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
870 { "gbr", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_RGB}, 0, 0, FLAGS, "matrix" },
871 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
872 { "fcc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_FCC}, 0, 0, FLAGS, "matrix" },
873 { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
874 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
875 { "smpte2400m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_240M}, 0, 0, FLAGS, "matrix" },
876 { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
877 { "bt2020nc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
878 { "bt2020c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
879 { "chroma-derived-nc",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL}, 0, 0, FLAGS, "matrix" },
880 { "chroma-derived-c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_CL}, 0, 0, FLAGS, "matrix" },
881 { "ictcp", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_ICTCP}, 0, 0, FLAGS, "matrix" },
882 { "in_range", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
883 { "rangein", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
884 { "rin", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
885 { "primariesin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
886 { "pin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
887 { "transferin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
888 { "tin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
889 { "matrixin", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
890 { "min", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
891 { "chromal", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
892 { "c", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
893 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "chroma" },
894 { "left", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_LEFT}, 0, 0, FLAGS, "chroma" },
895 { "center", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_CENTER}, 0, 0, FLAGS, "chroma" },
896 { "topleft", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP_LEFT}, 0, 0, FLAGS, "chroma" },
897 { "top", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP}, 0, 0, FLAGS, "chroma" },
898 { "bottomleft",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM_LEFT}, 0, 0, FLAGS, "chroma" },
899 { "bottom", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM}, 0, 0, FLAGS, "chroma" },
900 { "chromalin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
901 { "cin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
902 { "npl", "set nominal peak luminance", OFFSET(nominal_peak_luminance), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, 0, DBL_MAX, FLAGS },
903 { "agamma", "allow approximate gamma", OFFSET(approximate_gamma), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
904 { "param_a", "parameter A, which is parameter \"b\" for bicubic, "
905 "and the number of filter taps for lanczos", OFFSET(param_a), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, -DBL_MAX, DBL_MAX, FLAGS },
906 { "param_b", "parameter B, which is parameter \"c\" for bicubic", OFFSET(param_b), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, -DBL_MAX, DBL_MAX, FLAGS },
910 AVFILTER_DEFINE_CLASS(zscale);
912 static const AVFilterPad avfilter_vf_zscale_inputs[] = {
915 .type = AVMEDIA_TYPE_VIDEO,
916 .filter_frame = filter_frame,
921 static const AVFilterPad avfilter_vf_zscale_outputs[] = {
924 .type = AVMEDIA_TYPE_VIDEO,
925 .config_props = config_props,
930 const AVFilter ff_vf_zscale = {
932 .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
933 .init_dict = init_dict,
934 .query_formats = query_formats,
935 .priv_size = sizeof(ZScaleContext),
936 .priv_class = &zscale_class,
938 .inputs = avfilter_vf_zscale_inputs,
939 .outputs = avfilter_vf_zscale_outputs,
940 .process_command = process_command,