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 static const char *const var_names[] = {
77 typedef struct ZScaleContext {
81 * New dimensions. Special values are:
82 * 0 = original width/height
83 * -1 = keep original aspect
84 * -N = try to keep aspect but make sure it is divisible by N
100 double nominal_peak_luminance;
101 int approximate_gamma;
103 char *w_expr; ///< width expression string
104 char *h_expr; ///< height expression string
111 int force_original_aspect_ratio;
116 zimg_image_format src_format, dst_format;
117 zimg_image_format alpha_src_format, alpha_dst_format;
118 zimg_graph_builder_params alpha_params, params;
119 zimg_filter_graph *alpha_graph, *graph;
121 enum AVColorSpace in_colorspace, out_colorspace;
122 enum AVColorTransferCharacteristic in_trc, out_trc;
123 enum AVColorPrimaries in_primaries, out_primaries;
124 enum AVColorRange in_range, out_range;
125 enum AVChromaLocation in_chromal, out_chromal;
128 static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
130 ZScaleContext *s = ctx->priv;
133 if (s->size_str && (s->w_expr || s->h_expr)) {
134 av_log(ctx, AV_LOG_ERROR,
135 "Size and width/height expressions cannot be set at the same time.\n");
136 return AVERROR(EINVAL);
139 if (s->w_expr && !s->h_expr)
140 FFSWAP(char *, s->w_expr, s->size_str);
144 if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
145 av_log(ctx, AV_LOG_ERROR,
146 "Invalid size '%s'\n", s->size_str);
149 snprintf(buf, sizeof(buf)-1, "%d", s->w);
150 av_opt_set(s, "w", buf, 0);
151 snprintf(buf, sizeof(buf)-1, "%d", s->h);
152 av_opt_set(s, "h", buf, 0);
155 av_opt_set(s, "w", "iw", 0);
157 av_opt_set(s, "h", "ih", 0);
162 static int query_formats(AVFilterContext *ctx)
164 static const enum AVPixelFormat pixel_fmts[] = {
165 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
166 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
167 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
168 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
169 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
171 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
172 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
173 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
174 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
175 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
176 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
177 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
178 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
179 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
180 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
181 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
182 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
183 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
188 ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->out_formats);
191 return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->in_formats);
194 static int config_props(AVFilterLink *outlink)
196 AVFilterContext *ctx = outlink->src;
197 AVFilterLink *inlink = outlink->src->inputs[0];
198 ZScaleContext *s = ctx->priv;
199 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
200 const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
202 double var_values[VARS_NB], res;
205 int factor_w, factor_h;
207 var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
208 var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
209 var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
210 var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
211 var_values[VAR_A] = (double) inlink->w / inlink->h;
212 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
213 (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
214 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
215 var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
216 var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
217 var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
218 var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
220 /* evaluate width and height */
221 av_expr_parse_and_eval(&res, (expr = s->w_expr),
222 var_names, var_values,
223 NULL, NULL, NULL, NULL, NULL, 0, ctx);
224 s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
225 if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
226 var_names, var_values,
227 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
229 s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
230 /* evaluate again the width, as it may depend on the output height */
231 if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
232 var_names, var_values,
233 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
240 /* Check if it is requested that the result has to be divisible by a some
241 * factor (w or h = -n with n being the factor). */
259 /* Make sure that the result is divisible by the factor we determined
260 * earlier. If no factor was set, it is nothing will happen as the default
263 w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
265 h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
267 /* Note that force_original_aspect_ratio may overwrite the previous set
268 * dimensions so that it is not divisible by the set factors anymore. */
269 if (s->force_original_aspect_ratio) {
270 int tmp_w = av_rescale(h, inlink->w, inlink->h);
271 int tmp_h = av_rescale(w, inlink->h, inlink->w);
273 if (s->force_original_aspect_ratio == 1) {
282 if (w > INT_MAX || h > INT_MAX ||
283 (h * inlink->w) > INT_MAX ||
284 (w * inlink->h) > INT_MAX)
285 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
290 if (inlink->w == outlink->w &&
291 inlink->h == outlink->h &&
292 inlink->format == outlink->format)
297 if (inlink->sample_aspect_ratio.num){
298 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
300 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
302 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",
303 inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
304 inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,
305 outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
306 outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
310 av_log(ctx, AV_LOG_ERROR,
311 "Error when evaluating the expression '%s'.\n"
312 "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
313 expr, s->w_expr, s->h_expr);
317 static int print_zimg_error(AVFilterContext *ctx)
320 int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
322 av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
327 static int convert_chroma_location(enum AVChromaLocation chroma_location)
329 switch (chroma_location) {
330 case AVCHROMA_LOC_UNSPECIFIED:
331 case AVCHROMA_LOC_LEFT:
332 return ZIMG_CHROMA_LEFT;
333 case AVCHROMA_LOC_CENTER:
334 return ZIMG_CHROMA_CENTER;
335 case AVCHROMA_LOC_TOPLEFT:
336 return ZIMG_CHROMA_TOP_LEFT;
337 case AVCHROMA_LOC_TOP:
338 return ZIMG_CHROMA_TOP;
339 case AVCHROMA_LOC_BOTTOMLEFT:
340 return ZIMG_CHROMA_BOTTOM_LEFT;
341 case AVCHROMA_LOC_BOTTOM:
342 return ZIMG_CHROMA_BOTTOM;
344 return ZIMG_CHROMA_LEFT;
347 static int convert_matrix(enum AVColorSpace colorspace)
349 switch (colorspace) {
351 return ZIMG_MATRIX_RGB;
352 case AVCOL_SPC_BT709:
353 return ZIMG_MATRIX_709;
354 case AVCOL_SPC_UNSPECIFIED:
355 return ZIMG_MATRIX_UNSPECIFIED;
356 case AVCOL_SPC_BT470BG:
357 return ZIMG_MATRIX_470BG;
358 case AVCOL_SPC_SMPTE170M:
359 return ZIMG_MATRIX_170M;
360 case AVCOL_SPC_YCGCO:
361 return ZIMG_MATRIX_YCGCO;
362 case AVCOL_SPC_BT2020_NCL:
363 return ZIMG_MATRIX_2020_NCL;
364 case AVCOL_SPC_BT2020_CL:
365 return ZIMG_MATRIX_2020_CL;
367 return ZIMG_MATRIX_UNSPECIFIED;
370 static int convert_trc(enum AVColorTransferCharacteristic color_trc)
373 case AVCOL_TRC_UNSPECIFIED:
374 return ZIMG_TRANSFER_UNSPECIFIED;
375 case AVCOL_TRC_BT709:
376 return ZIMG_TRANSFER_709;
377 case AVCOL_TRC_SMPTE170M:
378 return ZIMG_TRANSFER_601;
379 case AVCOL_TRC_LINEAR:
380 return ZIMG_TRANSFER_LINEAR;
381 case AVCOL_TRC_BT2020_10:
382 return ZIMG_TRANSFER_2020_10;
383 case AVCOL_TRC_BT2020_12:
384 return ZIMG_TRANSFER_2020_12;
385 case AVCOL_TRC_SMPTE2084:
386 return ZIMG_TRANSFER_ST2084;
387 case AVCOL_TRC_ARIB_STD_B67:
388 return ZIMG_TRANSFER_ARIB_B67;
389 case AVCOL_TRC_IEC61966_2_1:
390 return ZIMG_TRANSFER_IEC_61966_2_1;
392 return ZIMG_TRANSFER_UNSPECIFIED;
395 static int convert_primaries(enum AVColorPrimaries color_primaries)
397 switch (color_primaries) {
398 case AVCOL_PRI_UNSPECIFIED:
399 return ZIMG_PRIMARIES_UNSPECIFIED;
400 case AVCOL_PRI_BT709:
401 return ZIMG_PRIMARIES_709;
402 case AVCOL_PRI_SMPTE170M:
403 return ZIMG_PRIMARIES_170M;
404 case AVCOL_PRI_SMPTE240M:
405 return ZIMG_PRIMARIES_240M;
406 case AVCOL_PRI_BT2020:
407 return ZIMG_PRIMARIES_2020;
408 case AVCOL_PRI_SMPTE432:
409 return ZIMG_PRIMARIES_ST432_1;
411 return ZIMG_PRIMARIES_UNSPECIFIED;
414 static int convert_range(enum AVColorRange color_range)
416 switch (color_range) {
417 case AVCOL_RANGE_UNSPECIFIED:
418 case AVCOL_RANGE_MPEG:
419 return ZIMG_RANGE_LIMITED;
420 case AVCOL_RANGE_JPEG:
421 return ZIMG_RANGE_FULL;
423 return ZIMG_RANGE_LIMITED;
426 static void format_init(zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc,
427 int colorspace, int primaries, int transfer, int range, int location)
429 format->width = frame->width;
430 format->height = frame->height;
431 format->subsample_w = desc->log2_chroma_w;
432 format->subsample_h = desc->log2_chroma_h;
433 format->depth = desc->comp[0].depth;
434 format->pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
435 format->color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
436 format->matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : colorspace == -1 ? convert_matrix(frame->colorspace) : colorspace;
437 format->color_primaries = primaries == -1 ? convert_primaries(frame->color_primaries) : primaries;
438 format->transfer_characteristics = transfer == - 1 ? convert_trc(frame->color_trc) : transfer;
439 format->pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : range == -1 ? convert_range(frame->color_range) : range;
440 format->chroma_location = location == -1 ? convert_chroma_location(frame->chroma_location) : location;
443 static int graph_build(zimg_filter_graph **graph, zimg_graph_builder_params *params,
444 zimg_image_format *src_format, zimg_image_format *dst_format,
445 void **tmp, size_t *tmp_size)
450 zimg_filter_graph_free(*graph);
451 *graph = zimg_filter_graph_build(src_format, dst_format, params);
453 return print_zimg_error(NULL);
455 ret = zimg_filter_graph_get_tmp_size(*graph, &size);
457 return print_zimg_error(NULL);
459 if (size > *tmp_size) {
461 *tmp = av_malloc(size);
463 return AVERROR(ENOMEM);
471 static int filter_frame(AVFilterLink *link, AVFrame *in)
473 ZScaleContext *s = link->dst->priv;
474 AVFilterLink *outlink = link->dst->outputs[0];
475 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
476 const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
477 zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
478 zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
483 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
486 return AVERROR(ENOMEM);
489 av_frame_copy_props(out, in);
490 out->width = outlink->w;
491 out->height = outlink->h;
493 if( in->width != link->w
494 || in->height != link->h
495 || in->format != link->format
496 || s->in_colorspace != in->colorspace
497 || s->in_trc != in->color_trc
498 || s->in_primaries != in->color_primaries
499 || s->in_range != in->color_range
500 || s->out_colorspace != out->colorspace
501 || s->out_trc != out->color_trc
502 || s->out_primaries != out->color_primaries
503 || s->out_range != out->color_range
504 || s->in_chromal != in->chroma_location
505 || s->out_chromal != out->chroma_location) {
506 snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
507 av_opt_set(s, "w", buf, 0);
508 snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
509 av_opt_set(s, "h", buf, 0);
511 link->dst->inputs[0]->format = in->format;
512 link->dst->inputs[0]->w = in->width;
513 link->dst->inputs[0]->h = in->height;
515 if ((ret = config_props(outlink)) < 0) {
521 zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
522 zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
523 zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
525 s->params.dither_type = s->dither;
526 s->params.cpu_type = ZIMG_CPU_AUTO;
527 s->params.resample_filter = s->filter;
528 s->params.resample_filter_uv = s->filter;
529 s->params.nominal_peak_luminance = s->nominal_peak_luminance;
530 s->params.allow_approximate_gamma = s->approximate_gamma;
532 format_init(&s->src_format, in, desc, s->colorspace_in,
533 s->primaries_in, s->trc_in, s->range_in, s->chromal_in);
534 format_init(&s->dst_format, out, odesc, s->colorspace,
535 s->primaries, s->trc, s->range, s->chromal);
537 if (s->colorspace != -1)
538 out->colorspace = (int)s->dst_format.matrix_coefficients;
540 if (s->primaries != -1)
541 out->color_primaries = (int)s->dst_format.color_primaries;
544 out->color_range = (int)s->dst_format.pixel_range + 1;
547 out->color_trc = (int)s->dst_format.transfer_characteristics;
549 if (s->chromal != -1)
550 out->chroma_location = (int)s->dst_format.chroma_location - 1;
552 ret = graph_build(&s->graph, &s->params, &s->src_format, &s->dst_format,
553 &s->tmp, &s->tmp_size);
557 s->in_colorspace = in->colorspace;
558 s->in_trc = in->color_trc;
559 s->in_primaries = in->color_primaries;
560 s->in_range = in->color_range;
561 s->out_colorspace = out->colorspace;
562 s->out_trc = out->color_trc;
563 s->out_primaries = out->color_primaries;
564 s->out_range = out->color_range;
566 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
567 zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
568 zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
569 zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
571 s->alpha_params.dither_type = s->dither;
572 s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
573 s->alpha_params.resample_filter = s->filter;
575 s->alpha_src_format.width = in->width;
576 s->alpha_src_format.height = in->height;
577 s->alpha_src_format.depth = desc->comp[0].depth;
578 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;
579 s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
581 s->alpha_dst_format.width = out->width;
582 s->alpha_dst_format.height = out->height;
583 s->alpha_dst_format.depth = odesc->comp[0].depth;
584 s->alpha_dst_format.pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
585 s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
587 zimg_filter_graph_free(s->alpha_graph);
588 s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
589 if (!s->alpha_graph) {
590 ret = print_zimg_error(link->dst);
596 if (s->colorspace != -1)
597 out->colorspace = (int)s->dst_format.matrix_coefficients;
599 if (s->primaries != -1)
600 out->color_primaries = (int)s->dst_format.color_primaries;
603 out->color_range = (int)s->dst_format.pixel_range;
606 out->color_trc = (int)s->dst_format.transfer_characteristics;
608 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
609 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
610 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
613 for (plane = 0; plane < 3; plane++) {
614 int p = desc->comp[plane].plane;
615 src_buf.plane[plane].data = in->data[p];
616 src_buf.plane[plane].stride = in->linesize[p];
617 src_buf.plane[plane].mask = -1;
619 p = odesc->comp[plane].plane;
620 dst_buf.plane[plane].data = out->data[p];
621 dst_buf.plane[plane].stride = out->linesize[p];
622 dst_buf.plane[plane].mask = -1;
625 ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
627 print_zimg_error(link->dst);
631 if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
632 src_buf.plane[0].data = in->data[3];
633 src_buf.plane[0].stride = in->linesize[3];
634 src_buf.plane[0].mask = -1;
636 dst_buf.plane[0].data = out->data[3];
637 dst_buf.plane[0].stride = out->linesize[3];
638 dst_buf.plane[0].mask = -1;
640 ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
642 print_zimg_error(link->dst);
645 } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
648 if (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) {
649 for (y = 0; y < out->height; y++) {
650 for (x = 0; x < out->width; x++) {
651 AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
656 for (y = 0; y < outlink->h; y++)
657 memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
668 return ff_filter_frame(outlink, out);
671 static void uninit(AVFilterContext *ctx)
673 ZScaleContext *s = ctx->priv;
675 zimg_filter_graph_free(s->graph);
680 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
681 char *res, int res_len, int flags)
683 ZScaleContext *s = ctx->priv;
686 if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
687 || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
691 AVFilterLink *outlink = ctx->outputs[0];
693 av_opt_set(s, cmd, args, 0);
694 if ((ret = config_props(outlink)) < 0) {
699 ret = AVERROR(ENOSYS);
704 #define OFFSET(x) offsetof(ZScaleContext, x)
705 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
707 static const AVOption zscale_options[] = {
708 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
709 { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
710 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
711 { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
712 { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
713 { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
714 { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
715 { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
716 { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
717 { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
718 { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
719 { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
720 { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
721 { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
722 { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
723 { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
724 { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
725 { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
726 { "spline36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
727 { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
728 { "out_range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
729 { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
730 { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
731 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
732 { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
733 { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
734 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
735 { "tv", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
736 { "pc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
737 { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
738 { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
739 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
740 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
741 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
742 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
743 { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
744 { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
745 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
746 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
747 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
748 { "smpte240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
749 { "bt2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
750 { "smpte432", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST432_1}, 0, 0, FLAGS, "primaries" },
751 { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
752 { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
753 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
754 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
755 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
756 { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
757 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
758 { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
759 { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
760 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
761 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
762 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
763 { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
764 { "bt2020-10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
765 { "bt2020-12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
766 { "smpte2084", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ST2084}, 0, 0, FLAGS, "transfer" },
767 { "iec61966-2-1", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_1},0, 0, FLAGS, "transfer" },
768 { "arib-std-b67", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ARIB_B67}, 0, 0, FLAGS, "transfer" },
769 { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
770 { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
771 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
772 { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
773 { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
774 { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
775 { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
776 { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
777 { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
778 { "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
779 { "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
780 { "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
781 { "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
782 { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
783 { "bt2020nc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
784 { "bt2020c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
785 { "in_range", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
786 { "rangein", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
787 { "rin", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
788 { "primariesin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
789 { "pin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_ST432_1, FLAGS, "primaries" },
790 { "transferin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
791 { "tin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_ARIB_B67, FLAGS, "transfer" },
792 { "matrixin", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
793 { "min", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
794 { "chromal", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
795 { "c", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
796 { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "chroma" },
797 { "left", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_LEFT}, 0, 0, FLAGS, "chroma" },
798 { "center", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_CENTER}, 0, 0, FLAGS, "chroma" },
799 { "topleft", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP_LEFT}, 0, 0, FLAGS, "chroma" },
800 { "top", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP}, 0, 0, FLAGS, "chroma" },
801 { "bottomleft",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM_LEFT}, 0, 0, FLAGS, "chroma" },
802 { "bottom", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM}, 0, 0, FLAGS, "chroma" },
803 { "chromalin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
804 { "cin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
805 { "npl", "set nominal peak luminance", OFFSET(nominal_peak_luminance), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, 0, DBL_MAX, FLAGS },
806 { "agamma", "allow approximate gamma", OFFSET(approximate_gamma), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
810 static const AVClass zscale_class = {
811 .class_name = "zscale",
812 .item_name = av_default_item_name,
813 .option = zscale_options,
814 .version = LIBAVUTIL_VERSION_INT,
815 .category = AV_CLASS_CATEGORY_FILTER,
818 static const AVFilterPad avfilter_vf_zscale_inputs[] = {
821 .type = AVMEDIA_TYPE_VIDEO,
822 .filter_frame = filter_frame,
827 static const AVFilterPad avfilter_vf_zscale_outputs[] = {
830 .type = AVMEDIA_TYPE_VIDEO,
831 .config_props = config_props,
836 AVFilter ff_vf_zscale = {
838 .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
839 .init_dict = init_dict,
840 .query_formats = query_formats,
841 .priv_size = sizeof(ZScaleContext),
842 .priv_class = &zscale_class,
844 .inputs = avfilter_vf_zscale_inputs,
845 .outputs = avfilter_vf_zscale_outputs,
846 .process_command = process_command,