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FFmpeg/libavfilter/vf_zscale.c
Vittorio Giovara bc38c8f442 vf_zscale: Fix alpha destination graph for floating point pixel formats 
This was setting the input pixel type instead of the output one,
leading to incorrect data being fed to the library.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2017-12-08 10:11:50 -05:00

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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 }
};
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,
};
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