mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
2f76476549
It will allow to refernce it as a whole without clunky macros. Most of the changes have been automatically made with sed: sed -i ' s/-> *in_formats/->incfg.formats/g; s/-> *out_formats/->outcfg.formats/g; s/-> *in_channel_layouts/->incfg.channel_layouts/g; s/-> *out_channel_layouts/->outcfg.channel_layouts/g; s/-> *in_samplerates/->incfg.samplerates/g; s/-> *out_samplerates/->outcfg.samplerates/g; ' src/libavfilter/*(.)
125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/*
|
|
* 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
|
|
* Display frame palette (AV_PIX_FMT_PAL8)
|
|
*/
|
|
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/opt.h"
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
typedef struct ShowPaletteContext {
|
|
const AVClass *class;
|
|
int size;
|
|
} ShowPaletteContext;
|
|
|
|
#define OFFSET(x) offsetof(ShowPaletteContext, x)
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
|
static const AVOption showpalette_options[] = {
|
|
{ "s", "set pixel box size", OFFSET(size), AV_OPT_TYPE_INT, {.i64=30}, 1, 100, FLAGS },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(showpalette);
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum AVPixelFormat in_fmts[] = {AV_PIX_FMT_PAL8, AV_PIX_FMT_NONE};
|
|
static const enum AVPixelFormat out_fmts[] = {AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE};
|
|
int ret = ff_formats_ref(ff_make_format_list(in_fmts),
|
|
&ctx->inputs[0]->outcfg.formats);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return ff_formats_ref(ff_make_format_list(out_fmts),
|
|
&ctx->outputs[0]->incfg.formats);
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
const ShowPaletteContext *s = ctx->priv;
|
|
outlink->w = outlink->h = 16 * s->size;
|
|
return 0;
|
|
}
|
|
|
|
static void disp_palette(AVFrame *out, const AVFrame *in, int size)
|
|
{
|
|
int x, y, i, j;
|
|
uint32_t *dst = (uint32_t *)out->data[0];
|
|
const int dst_linesize = out->linesize[0] >> 2;
|
|
const uint32_t *pal = (uint32_t *)in->data[1];
|
|
|
|
for (y = 0; y < 16; y++)
|
|
for (x = 0; x < 16; x++)
|
|
for (j = 0; j < size; j++)
|
|
for (i = 0; i < size; i++)
|
|
dst[(y*dst_linesize + x) * size + j*dst_linesize + i] = pal[y*16 + x];
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
AVFrame *out;
|
|
AVFilterContext *ctx = inlink->dst;
|
|
const ShowPaletteContext *s = ctx->priv;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
|
|
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);
|
|
disp_palette(out, in, s->size);
|
|
av_frame_free(&in);
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static const AVFilterPad showpalette_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad showpalette_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_vf_showpalette = {
|
|
.name = "showpalette",
|
|
.description = NULL_IF_CONFIG_SMALL("Display frame palette."),
|
|
.priv_size = sizeof(ShowPaletteContext),
|
|
.query_formats = query_formats,
|
|
.inputs = showpalette_inputs,
|
|
.outputs = showpalette_outputs,
|
|
.priv_class = &showpalette_class,
|
|
};
|