--- /dev/null
+/*
+ * Copyright (c) 2015 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * zscale video filter using z.lib library
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <zimg.h>
+
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+#include "libavutil/avstring.h"
+#include "libavutil/eval.h"
+#include "libavutil/internal.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/avassert.h"
+
+static const char *const var_names[] = {
+ "in_w", "iw",
+ "in_h", "ih",
+ "out_w", "ow",
+ "out_h", "oh",
+ "a",
+ "sar",
+ "dar",
+ "hsub",
+ "vsub",
+ "ohsub",
+ "ovsub",
+ NULL
+};
+
+enum var_name {
+ VAR_IN_W, VAR_IW,
+ VAR_IN_H, VAR_IH,
+ VAR_OUT_W, VAR_OW,
+ VAR_OUT_H, VAR_OH,
+ VAR_A,
+ VAR_SAR,
+ VAR_DAR,
+ VAR_HSUB,
+ VAR_VSUB,
+ VAR_OHSUB,
+ VAR_OVSUB,
+ VARS_NB
+};
+
+typedef struct ZScaleContext {
+ const AVClass *class;
+
+ /**
+ * New dimensions. Special values are:
+ * 0 = original width/height
+ * -1 = keep original aspect
+ * -N = try to keep aspect but make sure it is divisible by N
+ */
+ int w, h;
+ int dither;
+ int filter;
+ int colorspace;
+ int trc;
+ int primaries;
+ int range;
+ char *size_str;
+
+ char *w_expr; ///< width expression string
+ char *h_expr; ///< height expression string
+
+ int out_h_chr_pos;
+ int out_v_chr_pos;
+ int in_h_chr_pos;
+ int in_v_chr_pos;
+
+ int force_original_aspect_ratio;
+
+ void *tmp;
+ size_t tmp_size;
+
+ zimg_image_format src_format, dst_format;
+ zimg_image_format alpha_src_format, alpha_dst_format;
+ zimg_graph_builder_params alpha_params, params;
+ zimg_filter_graph *alpha_graph, *graph;
+
+ enum AVColorSpace in_colorspace, out_colorspace;
+ enum AVColorTransferCharacteristic in_trc, out_trc;
+ enum AVColorPrimaries in_primaries, out_primaries;
+ enum AVColorRange in_range, out_range;
+} ZScaleContext;
+
+static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
+{
+ ZScaleContext *s = ctx->priv;
+ int ret;
+
+ if (s->size_str && (s->w_expr || s->h_expr)) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Size and width/height expressions cannot be set at the same time.\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (s->w_expr && !s->h_expr)
+ FFSWAP(char *, s->w_expr, s->size_str);
+
+ if (s->size_str) {
+ char buf[32];
+ if ((ret = av_parse_video_size(&s->w, &s->h, s->size_str)) < 0) {
+ av_log(ctx, AV_LOG_ERROR,
+ "Invalid size '%s'\n", s->size_str);
+ return ret;
+ }
+ snprintf(buf, sizeof(buf)-1, "%d", s->w);
+ av_opt_set(s, "w", buf, 0);
+ snprintf(buf, sizeof(buf)-1, "%d", s->h);
+ av_opt_set(s, "h", buf, 0);
+ }
+ if (!s->w_expr)
+ av_opt_set(s, "w", "iw", 0);
+ if (!s->h_expr)
+ av_opt_set(s, "h", "ih", 0);
+
+ return 0;
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pixel_fmts[] = {
+ AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
+ AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_YUVJ411P,
+ AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
+ AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
+ AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
+ AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
+ AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
+ AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
+ AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
+ AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
+ AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
+ AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
+ AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
+ AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
+ AV_PIX_FMT_NONE
+ };
+ int ret;
+
+ ret = ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->inputs[0]->out_formats);
+ if (ret < 0)
+ return ret;
+ return ff_formats_ref(ff_make_format_list(pixel_fmts), &ctx->outputs[0]->in_formats);
+}
+
+static int config_props(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AVFilterLink *inlink = outlink->src->inputs[0];
+ ZScaleContext *s = ctx->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ const AVPixFmtDescriptor *out_desc = av_pix_fmt_desc_get(outlink->format);
+ int64_t w, h;
+ double var_values[VARS_NB], res;
+ char *expr;
+ int ret;
+ int factor_w, factor_h;
+
+ var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
+ var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
+ var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
+ var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
+ var_values[VAR_A] = (double) inlink->w / inlink->h;
+ var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
+ (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
+ var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
+ var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
+ var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
+ var_values[VAR_OHSUB] = 1 << out_desc->log2_chroma_w;
+ var_values[VAR_OVSUB] = 1 << out_desc->log2_chroma_h;
+
+ /* evaluate width and height */
+ av_expr_parse_and_eval(&res, (expr = s->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx);
+ s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
+ if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto fail;
+ s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
+ /* evaluate again the width, as it may depend on the output height */
+ if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto fail;
+ s->w = res;
+
+ w = s->w;
+ h = s->h;
+
+ /* Check if it is requested that the result has to be divisible by a some
+ * factor (w or h = -n with n being the factor). */
+ factor_w = 1;
+ factor_h = 1;
+ if (w < -1) {
+ factor_w = -w;
+ }
+ if (h < -1) {
+ factor_h = -h;
+ }
+
+ if (w < 0 && h < 0)
+ s->w = s->h = 0;
+
+ if (!(w = s->w))
+ w = inlink->w;
+ if (!(h = s->h))
+ h = inlink->h;
+
+ /* Make sure that the result is divisible by the factor we determined
+ * earlier. If no factor was set, it is nothing will happen as the default
+ * factor is 1 */
+ if (w < 0)
+ w = av_rescale(h, inlink->w, inlink->h * factor_w) * factor_w;
+ if (h < 0)
+ h = av_rescale(w, inlink->h, inlink->w * factor_h) * factor_h;
+
+ /* Note that force_original_aspect_ratio may overwrite the previous set
+ * dimensions so that it is not divisible by the set factors anymore. */
+ if (s->force_original_aspect_ratio) {
+ int tmp_w = av_rescale(h, inlink->w, inlink->h);
+ int tmp_h = av_rescale(w, inlink->h, inlink->w);
+
+ if (s->force_original_aspect_ratio == 1) {
+ w = FFMIN(tmp_w, w);
+ h = FFMIN(tmp_h, h);
+ } else {
+ w = FFMAX(tmp_w, w);
+ h = FFMAX(tmp_h, h);
+ }
+ }
+
+ if (w > INT_MAX || h > INT_MAX ||
+ (h * inlink->w) > INT_MAX ||
+ (w * inlink->h) > INT_MAX)
+ av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
+
+ outlink->w = w;
+ outlink->h = h;
+
+ if (inlink->w == outlink->w &&
+ inlink->h == outlink->h &&
+ inlink->format == outlink->format)
+ ;
+ else {
+ }
+
+ if (inlink->sample_aspect_ratio.num){
+ outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
+ } else
+ outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
+
+ 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",
+ inlink ->w, inlink ->h, av_get_pix_fmt_name( inlink->format),
+ inlink->sample_aspect_ratio.num, inlink->sample_aspect_ratio.den,
+ outlink->w, outlink->h, av_get_pix_fmt_name(outlink->format),
+ outlink->sample_aspect_ratio.num, outlink->sample_aspect_ratio.den);
+ return 0;
+
+fail:
+ av_log(ctx, AV_LOG_ERROR,
+ "Error when evaluating the expression '%s'.\n"
+ "Maybe the expression for out_w:'%s' or for out_h:'%s' is self-referencing.\n",
+ expr, s->w_expr, s->h_expr);
+ return ret;
+}
+
+static int print_zimg_error(AVFilterContext *ctx)
+{
+ char err_msg[1024];
+ int err_code = zimg_get_last_error(err_msg, sizeof(err_msg));
+
+ av_log(ctx, AV_LOG_ERROR, "code %d: %s\n", err_code, err_msg);
+
+ return err_code;
+}
+
+static int convert_matrix(enum AVColorSpace colorspace)
+{
+ switch (colorspace) {
+ case AVCOL_SPC_RGB:
+ return ZIMG_MATRIX_RGB;
+ case AVCOL_SPC_BT709:
+ return ZIMG_MATRIX_709;
+ case AVCOL_SPC_UNSPECIFIED:
+ return ZIMG_MATRIX_UNSPECIFIED;
+ case AVCOL_SPC_BT470BG:
+ return ZIMG_MATRIX_470BG;
+ case AVCOL_SPC_SMPTE170M:
+ return ZIMG_MATRIX_170M;
+ case AVCOL_SPC_YCGCO:
+ return ZIMG_MATRIX_YCGCO;
+ case AVCOL_SPC_BT2020_NCL:
+ return ZIMG_MATRIX_2020_NCL;
+ case AVCOL_SPC_BT2020_CL:
+ return ZIMG_MATRIX_2020_CL;
+ }
+ return ZIMG_MATRIX_UNSPECIFIED;
+}
+
+static int convert_trc(enum AVColorTransferCharacteristic color_trc)
+{
+ switch (color_trc) {
+ case AVCOL_TRC_UNSPECIFIED:
+ return ZIMG_TRANSFER_UNSPECIFIED;
+ case AVCOL_TRC_BT709:
+ return ZIMG_TRANSFER_709;
+ case AVCOL_TRC_SMPTE170M:
+ return ZIMG_TRANSFER_601;
+ case AVCOL_TRC_LINEAR:
+ return ZIMG_TRANSFER_LINEAR;
+ case AVCOL_TRC_BT2020_10:
+ return ZIMG_TRANSFER_2020_10;
+ case AVCOL_TRC_BT2020_12:
+ return ZIMG_TRANSFER_2020_12;
+ }
+ return ZIMG_TRANSFER_UNSPECIFIED;
+}
+
+static int convert_primaries(enum AVColorPrimaries color_primaries)
+{
+ switch (color_primaries) {
+ case AVCOL_PRI_UNSPECIFIED:
+ return ZIMG_PRIMARIES_UNSPECIFIED;
+ case AVCOL_PRI_BT709:
+ return ZIMG_PRIMARIES_709;
+ case AVCOL_PRI_SMPTE170M:
+ return ZIMG_PRIMARIES_170M;
+ case AVCOL_PRI_SMPTE240M:
+ return ZIMG_PRIMARIES_240M;
+ case AVCOL_PRI_BT2020:
+ return ZIMG_PRIMARIES_2020;
+ }
+ return ZIMG_PRIMARIES_UNSPECIFIED;
+}
+
+static int convert_range(enum AVColorRange color_range)
+{
+ switch (color_range) {
+ case AVCOL_RANGE_UNSPECIFIED:
+ case AVCOL_RANGE_MPEG:
+ return ZIMG_RANGE_LIMITED;
+ case AVCOL_RANGE_JPEG:
+ return ZIMG_RANGE_FULL;
+ }
+ return ZIMG_RANGE_LIMITED;
+}
+
+static int filter_frame(AVFilterLink *link, AVFrame *in)
+{
+ ZScaleContext *s = link->dst->priv;
+ AVFilterLink *outlink = link->dst->outputs[0];
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
+ const AVPixFmtDescriptor *odesc = av_pix_fmt_desc_get(outlink->format);
+ zimg_image_buffer_const src_buf = { ZIMG_API_VERSION };
+ zimg_image_buffer dst_buf = { ZIMG_API_VERSION };
+ char buf[32];
+ size_t tmp_size;
+ int ret = 0, plane;
+ AVFrame *out;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+
+ av_frame_copy_props(out, in);
+ out->width = outlink->w;
+ out->height = outlink->h;
+
+ if( in->width != link->w
+ || in->height != link->h
+ || in->format != link->format
+ || s->in_colorspace != in->colorspace
+ || s->in_trc != in->color_trc
+ || s->in_primaries != in->color_primaries
+ || s->in_range != in->color_range
+ || s->out_colorspace != out->colorspace
+ || s->out_trc != out->color_trc
+ || s->out_primaries != out->color_primaries
+ || s->out_range != out->color_range) {
+ snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
+ av_opt_set(s, "w", buf, 0);
+ snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
+ av_opt_set(s, "h", buf, 0);
+
+ link->dst->inputs[0]->format = in->format;
+ link->dst->inputs[0]->w = in->width;
+ link->dst->inputs[0]->h = in->height;
+
+ if ((ret = config_props(outlink)) < 0) {
+ av_frame_free(&in);
+ av_frame_free(&out);
+ return ret;
+ }
+
+ zimg_image_format_default(&s->src_format, ZIMG_API_VERSION);
+ zimg_image_format_default(&s->dst_format, ZIMG_API_VERSION);
+ zimg_graph_builder_params_default(&s->params, ZIMG_API_VERSION);
+
+ s->params.dither_type = s->dither;
+ s->params.cpu_type = ZIMG_CPU_AUTO;
+ s->params.resample_filter = s->filter;
+ s->params.resample_filter_uv = s->filter;
+
+ s->src_format.width = in->width;
+ s->src_format.height = in->height;
+ s->src_format.subsample_w = desc->log2_chroma_w;
+ s->src_format.subsample_h = desc->log2_chroma_h;
+ s->src_format.depth = desc->comp[0].depth;
+ s->src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
+ s->src_format.color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
+ s->src_format.matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : convert_matrix(in->colorspace);
+ s->src_format.transfer_characteristics = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_TRANSFER_UNSPECIFIED : convert_trc(in->color_trc);
+ s->src_format.color_primaries = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_PRIMARIES_UNSPECIFIED : convert_primaries(in->color_primaries);
+ s->src_format.pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : convert_range(in->color_range);
+
+ s->dst_format.width = out->width;
+ s->dst_format.height = out->height;
+ s->dst_format.subsample_w = odesc->log2_chroma_w;
+ s->dst_format.subsample_h = odesc->log2_chroma_h;
+ s->dst_format.depth = odesc->comp[0].depth;
+ s->dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
+ s->dst_format.color_family = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
+ s->dst_format.matrix_coefficients = (odesc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : s->colorspace == -1 ? convert_matrix(out->colorspace) : s->colorspace;
+ 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;
+ 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;
+ 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;
+
+ if (s->colorspace != -1)
+ out->colorspace = (int)s->dst_format.matrix_coefficients;
+
+ if (s->primaries != -1)
+ out->color_primaries = (int)s->dst_format.color_primaries;
+
+ if (s->range != -1)
+ out->color_range = (int)s->dst_format.pixel_range + 1;
+
+ if (s->trc != -1)
+ out->color_trc = (int)s->dst_format.transfer_characteristics;
+
+ zimg_filter_graph_free(s->graph);
+ s->graph = zimg_filter_graph_build(&s->src_format, &s->dst_format, &s->params);
+ if (!s->graph) {
+ ret = print_zimg_error(link->dst);
+ goto fail;
+ }
+
+ if ((ret = zimg_filter_graph_get_tmp_size(s->graph, &tmp_size))) {
+ ret = print_zimg_error(link->dst);
+ goto fail;
+ }
+
+ if (tmp_size > s->tmp_size) {
+ av_freep(&s->tmp);
+ s->tmp = av_malloc(tmp_size);
+ if (!s->tmp) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ s->tmp_size = tmp_size;
+ }
+
+ s->in_colorspace = in->colorspace;
+ s->in_trc = in->color_trc;
+ s->in_primaries = in->color_primaries;
+ s->in_range = in->color_range;
+ s->out_colorspace = out->colorspace;
+ s->out_trc = out->color_trc;
+ s->out_primaries = out->color_primaries;
+ s->out_range = out->color_range;
+
+ if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
+ zimg_image_format_default(&s->alpha_src_format, ZIMG_API_VERSION);
+ zimg_image_format_default(&s->alpha_dst_format, ZIMG_API_VERSION);
+ zimg_graph_builder_params_default(&s->alpha_params, ZIMG_API_VERSION);
+
+ s->alpha_params.dither_type = s->dither;
+ s->alpha_params.cpu_type = ZIMG_CPU_AUTO;
+ s->alpha_params.resample_filter = s->filter;
+
+ s->alpha_src_format.width = in->width;
+ s->alpha_src_format.height = in->height;
+ s->alpha_src_format.depth = desc->comp[0].depth;
+ s->alpha_src_format.pixel_type = desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
+ s->alpha_src_format.color_family = ZIMG_COLOR_GREY;
+
+ s->alpha_dst_format.width = out->width;
+ s->alpha_dst_format.height = out->height;
+ s->alpha_dst_format.depth = odesc->comp[0].depth;
+ s->alpha_dst_format.pixel_type = odesc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
+ s->alpha_dst_format.color_family = ZIMG_COLOR_GREY;
+
+ zimg_filter_graph_free(s->alpha_graph);
+ s->alpha_graph = zimg_filter_graph_build(&s->alpha_src_format, &s->alpha_dst_format, &s->alpha_params);
+ if (!s->alpha_graph) {
+ ret = print_zimg_error(link->dst);
+ goto fail;
+ }
+ }
+ }
+
+ if (s->colorspace != -1)
+ out->colorspace = (int)s->dst_format.matrix_coefficients;
+
+ if (s->primaries != -1)
+ out->color_primaries = (int)s->dst_format.color_primaries;
+
+ if (s->range != -1)
+ out->color_range = (int)s->dst_format.pixel_range;
+
+ if (s->trc != -1)
+ out->color_trc = (int)s->dst_format.transfer_characteristics;
+
+ av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
+ (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
+ (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
+ INT_MAX);
+
+ for (plane = 0; plane < 3; plane++) {
+ int p = desc->comp[plane].plane;
+ src_buf.plane[plane].data = in->data[p];
+ src_buf.plane[plane].stride = in->linesize[p];
+ src_buf.plane[plane].mask = -1;
+
+ p = odesc->comp[plane].plane;
+ dst_buf.plane[plane].data = out->data[p];
+ dst_buf.plane[plane].stride = out->linesize[p];
+ dst_buf.plane[plane].mask = -1;
+ }
+
+ ret = zimg_filter_graph_process(s->graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
+ if (ret) {
+ print_zimg_error(link->dst);
+ goto fail;
+ }
+
+ if (desc->flags & AV_PIX_FMT_FLAG_ALPHA && odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
+ src_buf.plane[0].data = in->data[3];
+ src_buf.plane[0].stride = in->linesize[3];
+ src_buf.plane[0].mask = -1;
+
+ dst_buf.plane[0].data = out->data[3];
+ dst_buf.plane[0].stride = out->linesize[3];
+ dst_buf.plane[0].mask = -1;
+
+ ret = zimg_filter_graph_process(s->alpha_graph, &src_buf, &dst_buf, s->tmp, 0, 0, 0, 0);
+ if (ret) {
+ print_zimg_error(link->dst);
+ goto fail;
+ }
+ } else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
+ int y;
+
+ for (y = 0; y < outlink->h; y++)
+ memset(out->data[3] + y * out->linesize[3], 0xff, outlink->w);
+ }
+
+fail:
+ av_frame_free(&in);
+ if (ret) {
+ av_frame_free(&out);
+ return ret;
+ }
+
+ return ff_filter_frame(outlink, out);
+}
+
+static void uninit(AVFilterContext *ctx)
+{
+ ZScaleContext *s = ctx->priv;
+
+ zimg_filter_graph_free(s->graph);
+ av_freep(&s->tmp);
+ s->tmp_size = 0;
+}
+
+static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
+ char *res, int res_len, int flags)
+{
+ ZScaleContext *s = ctx->priv;
+ int ret;
+
+ if ( !strcmp(cmd, "width") || !strcmp(cmd, "w")
+ || !strcmp(cmd, "height") || !strcmp(cmd, "h")) {
+
+ int old_w = s->w;
+ int old_h = s->h;
+ AVFilterLink *outlink = ctx->outputs[0];
+
+ av_opt_set(s, cmd, args, 0);
+ if ((ret = config_props(outlink)) < 0) {
+ s->w = old_w;
+ s->h = old_h;
+ }
+ } else
+ ret = AVERROR(ENOSYS);
+
+ return ret;
+}
+
+#define OFFSET(x) offsetof(ZScaleContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption zscale_options[] = {
+ { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "width", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "height", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
+ { "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
+ { "dither", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
+ { "d", "set dither type", OFFSET(dither), AV_OPT_TYPE_INT, {.i64 = 0}, 0, ZIMG_DITHER_ERROR_DIFFUSION, FLAGS, "dither" },
+ { "none", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_NONE}, 0, 0, FLAGS, "dither" },
+ { "ordered", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ORDERED}, 0, 0, FLAGS, "dither" },
+ { "random", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_RANDOM}, 0, 0, FLAGS, "dither" },
+ { "error_diffusion", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_DITHER_ERROR_DIFFUSION}, 0, 0, FLAGS, "dither" },
+ { "filter", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
+ { "f", "set filter type", OFFSET(filter), AV_OPT_TYPE_INT, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, ZIMG_RESIZE_LANCZOS, FLAGS, "filter" },
+ { "point", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_POINT}, 0, 0, FLAGS, "filter" },
+ { "bilinear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BILINEAR}, 0, 0, FLAGS, "filter" },
+ { "bicubic", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_BICUBIC}, 0, 0, FLAGS, "filter" },
+ { "spline16", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE16}, 0, 0, FLAGS, "filter" },
+ { "splite36", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_SPLINE36}, 0, 0, FLAGS, "filter" },
+ { "lanczos", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RESIZE_LANCZOS}, 0, 0, FLAGS, "filter" },
+ { "range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
+ { "r", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
+ { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
+ { "limited", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
+ { "full", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_FULL}, 0, 0, FLAGS, "range" },
+ { "primaries", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_2020, FLAGS, "primaries" },
+ { "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_PRIMARIES_2020, FLAGS, "primaries" },
+ { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "primaries" },
+ { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
+ { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
+ { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
+ { "240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
+ { "2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
+ { "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_2020_12, FLAGS, "transfer" },
+ { "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_TRANSFER_2020_12, FLAGS, "transfer" },
+ { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "transfer" },
+ { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
+ { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
+ { "601", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
+ { "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
+ { "2020_10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
+ { "2020_12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
+ { "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
+ { "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_MATRIX_2020_CL, FLAGS, "matrix" },
+ { "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "matrix" },
+ { "709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
+ { "unspecified", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
+ { "470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
+ { "170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
+ { "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
+ { "2020_ncl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
+ { "2020_cl", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
+ { NULL }
+};
+
+static const AVClass zscale_class = {
+ .class_name = "zscale",
+ .item_name = av_default_item_name,
+ .option = zscale_options,
+ .version = LIBAVUTIL_VERSION_INT,
+ .category = AV_CLASS_CATEGORY_FILTER,
+};
+
+static const AVFilterPad avfilter_vf_zscale_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad avfilter_vf_zscale_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_zscale = {
+ .name = "zscale",
+ .description = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
+ .init_dict = init_dict,
+ .query_formats = query_formats,
+ .priv_size = sizeof(ZScaleContext),
+ .priv_class = &zscale_class,
+ .uninit = uninit,
+ .inputs = avfilter_vf_zscale_inputs,
+ .outputs = avfilter_vf_zscale_outputs,
+ .process_command = process_command,
+};