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FFmpeg/libavfilter/vf_zscale.c
Jun Zhao 26dbe88ea3 lavfi/zscale: make use of AVFILTER_DEFINE_CLASS 
use AVFILTER_DEFINE_CLASS for defining the filter classes

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2019-03-08 09:38:09 +08:00

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/*
* 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 <float.h>
#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/intreadwrite.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;
int chromal;
int colorspace_in;
int trc_in;
int primaries_in;
int range_in;
int chromal_in;
char *size_str;
double nominal_peak_luminance;
int approximate_gamma;
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;
enum AVChromaLocation in_chromal, out_chromal;
} 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_GBRPF32, AV_PIX_FMT_GBRAPF32,
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 AVERROR_EXTERNAL;
}
static int convert_chroma_location(enum AVChromaLocation chroma_location)
{
switch (chroma_location) {
case AVCHROMA_LOC_UNSPECIFIED:
case AVCHROMA_LOC_LEFT:
return ZIMG_CHROMA_LEFT;
case AVCHROMA_LOC_CENTER:
return ZIMG_CHROMA_CENTER;
case AVCHROMA_LOC_TOPLEFT:
return ZIMG_CHROMA_TOP_LEFT;
case AVCHROMA_LOC_TOP:
return ZIMG_CHROMA_TOP;
case AVCHROMA_LOC_BOTTOMLEFT:
return ZIMG_CHROMA_BOTTOM_LEFT;
case AVCHROMA_LOC_BOTTOM:
return ZIMG_CHROMA_BOTTOM;
}
return ZIMG_CHROMA_LEFT;
}
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_FCC:
return ZIMG_MATRIX_FCC;
case AVCOL_SPC_BT470BG:
return ZIMG_MATRIX_470BG;
case AVCOL_SPC_SMPTE170M:
return ZIMG_MATRIX_170M;
case AVCOL_SPC_SMPTE240M:
return ZIMG_MATRIX_240M;
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;
case AVCOL_SPC_CHROMA_DERIVED_NCL:
return ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL;
case AVCOL_SPC_CHROMA_DERIVED_CL:
return ZIMG_MATRIX_CHROMATICITY_DERIVED_CL;
case AVCOL_SPC_ICTCP:
return ZIMG_MATRIX_ICTCP;
}
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_GAMMA22:
return ZIMG_TRANSFER_470_M;
case AVCOL_TRC_GAMMA28:
return ZIMG_TRANSFER_470_BG;
case AVCOL_TRC_SMPTE170M:
return ZIMG_TRANSFER_601;
case AVCOL_TRC_SMPTE240M:
return ZIMG_TRANSFER_240M;
case AVCOL_TRC_LINEAR:
return ZIMG_TRANSFER_LINEAR;
case AVCOL_TRC_LOG:
return ZIMG_TRANSFER_LOG_100;
case AVCOL_TRC_LOG_SQRT:
return ZIMG_TRANSFER_LOG_316;
case AVCOL_TRC_IEC61966_2_4:
return ZIMG_TRANSFER_IEC_61966_2_4;
case AVCOL_TRC_BT2020_10:
return ZIMG_TRANSFER_2020_10;
case AVCOL_TRC_BT2020_12:
return ZIMG_TRANSFER_2020_12;
case AVCOL_TRC_SMPTE2084:
return ZIMG_TRANSFER_ST2084;
case AVCOL_TRC_ARIB_STD_B67:
return ZIMG_TRANSFER_ARIB_B67;
case AVCOL_TRC_IEC61966_2_1:
return ZIMG_TRANSFER_IEC_61966_2_1;
}
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_BT470M:
return ZIMG_PRIMARIES_470_M;
case AVCOL_PRI_BT470BG:
return ZIMG_PRIMARIES_470_BG;
case AVCOL_PRI_SMPTE170M:
return ZIMG_PRIMARIES_170M;
case AVCOL_PRI_SMPTE240M:
return ZIMG_PRIMARIES_240M;
case AVCOL_PRI_FILM:
return ZIMG_PRIMARIES_FILM;
case AVCOL_PRI_BT2020:
return ZIMG_PRIMARIES_2020;
case AVCOL_PRI_SMPTE428:
return ZIMG_PRIMARIES_ST428;
case AVCOL_PRI_SMPTE431:
return ZIMG_PRIMARIES_ST431_2;
case AVCOL_PRI_SMPTE432:
return ZIMG_PRIMARIES_ST432_1;
case AVCOL_PRI_JEDEC_P22:
return ZIMG_PRIMARIES_EBU3213_E;
}
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 void format_init(zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc,
int colorspace, int primaries, int transfer, int range, int location)
{
format->width = frame->width;
format->height = frame->height;
format->subsample_w = desc->log2_chroma_w;
format->subsample_h = desc->log2_chroma_h;
format->depth = desc->comp[0].depth;
format->pixel_type = (desc->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : desc->comp[0].depth > 8 ? ZIMG_PIXEL_WORD : ZIMG_PIXEL_BYTE;
format->color_family = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_COLOR_RGB : ZIMG_COLOR_YUV;
format->matrix_coefficients = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_MATRIX_RGB : colorspace == -1 ? convert_matrix(frame->colorspace) : colorspace;
format->color_primaries = primaries == -1 ? convert_primaries(frame->color_primaries) : primaries;
format->transfer_characteristics = transfer == - 1 ? convert_trc(frame->color_trc) : transfer;
format->pixel_range = (desc->flags & AV_PIX_FMT_FLAG_RGB) ? ZIMG_RANGE_FULL : range == -1 ? convert_range(frame->color_range) : range;
format->chroma_location = location == -1 ? convert_chroma_location(frame->chroma_location) : location;
}
static int graph_build(zimg_filter_graph **graph, zimg_graph_builder_params *params,
zimg_image_format *src_format, zimg_image_format *dst_format,
void **tmp, size_t *tmp_size)
{
int ret;
size_t size;
zimg_filter_graph_free(*graph);
*graph = zimg_filter_graph_build(src_format, dst_format, params);
if (!*graph)
return print_zimg_error(NULL);
ret = zimg_filter_graph_get_tmp_size(*graph, &size);
if (ret)
return print_zimg_error(NULL);
if (size > *tmp_size) {
av_freep(tmp);
*tmp = av_malloc(size);
if (!*tmp)
return AVERROR(ENOMEM);
*tmp_size = size;
}
return 0;
}
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];
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
|| s->in_chromal != in->chroma_location
|| s->out_chromal != out->chroma_location) {
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->params.nominal_peak_luminance = s->nominal_peak_luminance;
s->params.allow_approximate_gamma = s->approximate_gamma;
format_init(&s->src_format, in, desc, s->colorspace_in,
s->primaries_in, s->trc_in, s->range_in, s->chromal_in);
format_init(&s->dst_format, out, odesc, s->colorspace,
s->primaries, s->trc, s->range, s->chromal);
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;
if (s->chromal != -1)
out->chroma_location = (int)s->dst_format.chroma_location - 1;
ret = graph_build(&s->graph, &s->params, &s->src_format, &s->dst_format,
&s->tmp, &s->tmp_size);
if (ret < 0)
goto fail;
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->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : 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->flags & AV_PIX_FMT_FLAG_FLOAT) ? ZIMG_PIXEL_FLOAT : 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) {
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) {
ret = print_zimg_error(link->dst);
goto fail;
}
} else if (odesc->flags & AV_PIX_FMT_FLAG_ALPHA) {
int x, y;
if (odesc->flags & AV_PIX_FMT_FLAG_FLOAT) {
for (y = 0; y < out->height; y++) {
for (x = 0; x < out->width; x++) {
AV_WN32(out->data[3] + x * odesc->comp[3].step + y * out->linesize[3],
av_float2int(1.0f));
}
}
} else {
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);
zimg_filter_graph_free(s->alpha_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" },
{ "spline36", 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" },
{ "out_range", "set color range", OFFSET(range), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
{ "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" },
{ "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "range" },
{ "tv", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_RANGE_LIMITED}, 0, 0, FLAGS, "range" },
{ "pc", 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, INT_MAX, FLAGS, "primaries" },
{ "p", "set color primaries", OFFSET(primaries), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, 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" },
{ "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_UNSPECIFIED}, 0, 0, FLAGS, "primaries" },
{ "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_709}, 0, 0, FLAGS, "primaries" },
{ "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_M}, 0, 0, FLAGS, "primaries" },
{ "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_470_BG}, 0, 0, FLAGS, "primaries" },
{ "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_170M}, 0, 0, FLAGS, "primaries" },
{ "smpte240m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_240M}, 0, 0, FLAGS, "primaries" },
{ "film", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_FILM}, 0, 0, FLAGS, "primaries" },
{ "bt2020", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_2020}, 0, 0, FLAGS, "primaries" },
{ "smpte428", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST428}, 0, 0, FLAGS, "primaries" },
{ "smpte431", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST431_2}, 0, 0, FLAGS, "primaries" },
{ "smpte432", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_ST432_1}, 0, 0, FLAGS, "primaries" },
{ "jedec-p22", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_PRIMARIES_EBU3213_E}, 0, 0, FLAGS, "primaries" },
{ "transfer", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
{ "t", "set transfer characteristic", OFFSET(trc), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, 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" },
{ "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_UNSPECIFIED}, 0, 0, FLAGS, "transfer" },
{ "bt470m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_M}, 0, 0, FLAGS, "transfer" },
{ "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_470_BG}, 0, 0, FLAGS, "transfer" },
{ "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_601}, 0, 0, FLAGS, "transfer" },
{ "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_709}, 0, 0, FLAGS, "transfer" },
{ "linear", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LINEAR}, 0, 0, FLAGS, "transfer" },
{ "log100", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_100}, 0, 0, FLAGS, "transfer" },
{ "log316", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_LOG_316}, 0, 0, FLAGS, "transfer" },
{ "bt2020-10", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_10}, 0, 0, FLAGS, "transfer" },
{ "bt2020-12", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_2020_12}, 0, 0, FLAGS, "transfer" },
{ "smpte2084", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ST2084}, 0, 0, FLAGS, "transfer" },
{ "iec61966-2-4", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_4},0, 0, FLAGS, "transfer" },
{ "iec61966-2-1", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_IEC_61966_2_1},0, 0, FLAGS, "transfer" },
{ "arib-std-b67", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_TRANSFER_ARIB_B67}, 0, 0, FLAGS, "transfer" },
{ "matrix", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
{ "m", "set colorspace matrix", OFFSET(colorspace), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, 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" },
{ "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" },
{ "unknown", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_UNSPECIFIED}, 0, 0, FLAGS, "matrix" },
{ "gbr", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_RGB}, 0, 0, FLAGS, "matrix" },
{ "bt709", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_709}, 0, 0, FLAGS, "matrix" },
{ "fcc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_FCC}, 0, 0, FLAGS, "matrix" },
{ "bt470bg", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_470BG}, 0, 0, FLAGS, "matrix" },
{ "smpte170m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_170M}, 0, 0, FLAGS, "matrix" },
{ "smpte2400m", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_240M}, 0, 0, FLAGS, "matrix" },
{ "ycgco", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_YCGCO}, 0, 0, FLAGS, "matrix" },
{ "bt2020nc", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_NCL}, 0, 0, FLAGS, "matrix" },
{ "bt2020c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_2020_CL}, 0, 0, FLAGS, "matrix" },
{ "chroma-derived-nc",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_NCL}, 0, 0, FLAGS, "matrix" },
{ "chroma-derived-c", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_CHROMATICITY_DERIVED_CL}, 0, 0, FLAGS, "matrix" },
{ "ictcp", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_MATRIX_ICTCP}, 0, 0, FLAGS, "matrix" },
{ "in_range", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
{ "rangein", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
{ "rin", "set input color range", OFFSET(range_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_RANGE_FULL, FLAGS, "range" },
{ "primariesin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
{ "pin", "set input color primaries", OFFSET(primaries_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "primaries" },
{ "transferin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
{ "tin", "set input transfer characteristic", OFFSET(trc_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "transfer" },
{ "matrixin", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
{ "min", "set input colorspace matrix", OFFSET(colorspace_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, FLAGS, "matrix" },
{ "chromal", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
{ "c", "set output chroma location", OFFSET(chromal), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
{ "input", 0, 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, FLAGS, "chroma" },
{ "left", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_LEFT}, 0, 0, FLAGS, "chroma" },
{ "center", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_CENTER}, 0, 0, FLAGS, "chroma" },
{ "topleft", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP_LEFT}, 0, 0, FLAGS, "chroma" },
{ "top", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_TOP}, 0, 0, FLAGS, "chroma" },
{ "bottomleft",0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM_LEFT}, 0, 0, FLAGS, "chroma" },
{ "bottom", 0, 0, AV_OPT_TYPE_CONST, {.i64 = ZIMG_CHROMA_BOTTOM}, 0, 0, FLAGS, "chroma" },
{ "chromalin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
{ "cin", "set input chroma location", OFFSET(chromal_in), AV_OPT_TYPE_INT, {.i64 = -1}, -1, ZIMG_CHROMA_BOTTOM, FLAGS, "chroma" },
{ "npl", "set nominal peak luminance", OFFSET(nominal_peak_luminance), AV_OPT_TYPE_DOUBLE, {.dbl = NAN}, 0, DBL_MAX, FLAGS },
{ "agamma", "allow approximate gamma", OFFSET(approximate_gamma), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(zscale);
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,
};
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