mirror of https://git.ffmpeg.org/ffmpeg.git
340 lines
11 KiB
C
340 lines
11 KiB
C
/*
|
|
* Copyright (c) 2016 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
|
|
* threshold video filter
|
|
*/
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avfilter.h"
|
|
#include "framesync2.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
typedef struct ThresholdContext {
|
|
const AVClass *class;
|
|
|
|
int planes;
|
|
int bpc;
|
|
|
|
int nb_planes;
|
|
int width[4], height[4];
|
|
|
|
void (*threshold)(const uint8_t *in, const uint8_t *threshold,
|
|
const uint8_t *min, const uint8_t *max,
|
|
uint8_t *out,
|
|
ptrdiff_t ilinesize, ptrdiff_t tlinesize,
|
|
ptrdiff_t flinesize, ptrdiff_t slinesize,
|
|
ptrdiff_t olinesize,
|
|
int w, int h);
|
|
|
|
AVFrame *frames[4];
|
|
FFFrameSync fs;
|
|
} ThresholdContext;
|
|
|
|
#define OFFSET(x) offsetof(ThresholdContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
|
|
|
|
static const AVOption threshold_options[] = {
|
|
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(threshold);
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum AVPixelFormat pix_fmts[] = {
|
|
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
|
|
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
|
|
AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
|
|
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
|
|
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
|
|
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_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
|
|
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_GRAY8, AV_PIX_FMT_GRAY10,
|
|
AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
|
|
return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
}
|
|
|
|
static int process_frame(FFFrameSync *fs)
|
|
{
|
|
AVFilterContext *ctx = fs->parent;
|
|
ThresholdContext *s = fs->opaque;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
AVFrame *out, *in, *threshold, *min, *max;
|
|
int ret;
|
|
|
|
if ((ret = ff_framesync2_get_frame(&s->fs, 0, &in, 0)) < 0 ||
|
|
(ret = ff_framesync2_get_frame(&s->fs, 1, &threshold, 0)) < 0 ||
|
|
(ret = ff_framesync2_get_frame(&s->fs, 2, &min, 0)) < 0 ||
|
|
(ret = ff_framesync2_get_frame(&s->fs, 3, &max, 0)) < 0)
|
|
return ret;
|
|
|
|
if (ctx->is_disabled) {
|
|
out = av_frame_clone(in);
|
|
if (!out)
|
|
return AVERROR(ENOMEM);
|
|
} else {
|
|
int p;
|
|
|
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!out)
|
|
return AVERROR(ENOMEM);
|
|
av_frame_copy_props(out, in);
|
|
|
|
for (p = 0; p < s->nb_planes; p++) {
|
|
if (!(s->planes & (1 << p))) {
|
|
av_image_copy_plane(out->data[p], out->linesize[p],
|
|
in->data[p], in->linesize[p],
|
|
s->width[p] * s->bpc,
|
|
s->height[p]);
|
|
continue;
|
|
}
|
|
s->threshold(in->data[p], threshold->data[p],
|
|
min->data[p], max->data[p],
|
|
out->data[p],
|
|
in->linesize[p], threshold->linesize[p],
|
|
min->linesize[p], max->linesize[p],
|
|
out->linesize[p],
|
|
s->width[p], s->height[p]);
|
|
}
|
|
}
|
|
|
|
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static void threshold8(const uint8_t *in, const uint8_t *threshold,
|
|
const uint8_t *min, const uint8_t *max,
|
|
uint8_t *out,
|
|
ptrdiff_t ilinesize, ptrdiff_t tlinesize,
|
|
ptrdiff_t flinesize, ptrdiff_t slinesize,
|
|
ptrdiff_t olinesize,
|
|
int w, int h)
|
|
{
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; y++) {
|
|
for (x = 0; x < w; x++) {
|
|
out[x] = in[x] < threshold[x] ? min[x] : max[x];
|
|
}
|
|
|
|
in += ilinesize;
|
|
threshold += tlinesize;
|
|
min += flinesize;
|
|
max += flinesize;
|
|
out += olinesize;
|
|
}
|
|
}
|
|
|
|
static void threshold16(const uint8_t *iin, const uint8_t *tthreshold,
|
|
const uint8_t *ffirst, const uint8_t *ssecond,
|
|
uint8_t *oout,
|
|
ptrdiff_t ilinesize, ptrdiff_t tlinesize,
|
|
ptrdiff_t flinesize, ptrdiff_t slinesize,
|
|
ptrdiff_t olinesize,
|
|
int w, int h)
|
|
{
|
|
const uint16_t *in = (const uint16_t *)iin;
|
|
const uint16_t *threshold = (const uint16_t *)tthreshold;
|
|
const uint16_t *min = (const uint16_t *)ffirst;
|
|
const uint16_t *max = (const uint16_t *)ssecond;
|
|
uint16_t *out = (uint16_t *)oout;
|
|
int x, y;
|
|
|
|
for (y = 0; y < h; y++) {
|
|
for (x = 0; x < w; x++) {
|
|
out[x] = in[x] < threshold[x] ? min[x] : max[x];
|
|
}
|
|
|
|
in += ilinesize / 2;
|
|
threshold += tlinesize / 2;
|
|
min += flinesize / 2;
|
|
max += flinesize / 2;
|
|
out += olinesize / 2;
|
|
}
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
ThresholdContext *s = ctx->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
int vsub, hsub;
|
|
|
|
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
|
|
|
|
hsub = desc->log2_chroma_w;
|
|
vsub = desc->log2_chroma_h;
|
|
s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
|
|
s->height[0] = s->height[3] = inlink->h;
|
|
s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
|
|
s->width[0] = s->width[3] = inlink->w;
|
|
|
|
if (desc->comp[0].depth == 8) {
|
|
s->threshold = threshold8;
|
|
s->bpc = 1;
|
|
} else {
|
|
s->threshold = threshold16;
|
|
s->bpc = 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
ThresholdContext *s = ctx->priv;
|
|
AVFilterLink *base = ctx->inputs[0];
|
|
AVFilterLink *threshold = ctx->inputs[1];
|
|
AVFilterLink *min = ctx->inputs[2];
|
|
AVFilterLink *max = ctx->inputs[3];
|
|
FFFrameSyncIn *in;
|
|
int ret;
|
|
|
|
if (base->format != threshold->format ||
|
|
base->format != min->format ||
|
|
base->format != max->format) {
|
|
av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (base->w != threshold->w ||
|
|
base->h != threshold->h ||
|
|
base->w != min->w ||
|
|
base->h != min->h ||
|
|
base->w != max->w ||
|
|
base->h != max->h) {
|
|
av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
|
|
"(size %dx%d) do not match the corresponding "
|
|
"second input link %s parameters (%dx%d) "
|
|
"and/or third input link %s parameters (%dx%d) "
|
|
"and/or fourth input link %s parameters (%dx%d)\n",
|
|
ctx->input_pads[0].name, base->w, base->h,
|
|
ctx->input_pads[1].name, threshold->w, threshold->h,
|
|
ctx->input_pads[2].name, min->w, min->h,
|
|
ctx->input_pads[3].name, max->w, max->h);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
outlink->w = base->w;
|
|
outlink->h = base->h;
|
|
outlink->time_base = base->time_base;
|
|
outlink->sample_aspect_ratio = base->sample_aspect_ratio;
|
|
outlink->frame_rate = base->frame_rate;
|
|
|
|
if ((ret = ff_framesync2_init(&s->fs, ctx, 4)) < 0)
|
|
return ret;
|
|
|
|
in = s->fs.in;
|
|
in[0].time_base = base->time_base;
|
|
in[1].time_base = threshold->time_base;
|
|
in[2].time_base = min->time_base;
|
|
in[3].time_base = max->time_base;
|
|
in[0].sync = 1;
|
|
in[0].before = EXT_STOP;
|
|
in[0].after = EXT_STOP;
|
|
in[1].sync = 1;
|
|
in[1].before = EXT_STOP;
|
|
in[1].after = EXT_STOP;
|
|
in[2].sync = 1;
|
|
in[2].before = EXT_STOP;
|
|
in[2].after = EXT_STOP;
|
|
in[3].sync = 1;
|
|
in[3].before = EXT_STOP;
|
|
in[3].after = EXT_STOP;
|
|
s->fs.opaque = s;
|
|
s->fs.on_event = process_frame;
|
|
|
|
return ff_framesync2_configure(&s->fs);
|
|
}
|
|
|
|
static int activate(AVFilterContext *ctx)
|
|
{
|
|
ThresholdContext *s = ctx->priv;
|
|
return ff_framesync2_activate(&s->fs);
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
ThresholdContext *s = ctx->priv;
|
|
|
|
ff_framesync2_uninit(&s->fs);
|
|
}
|
|
|
|
static const AVFilterPad inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_input,
|
|
},
|
|
{
|
|
.name = "threshold",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{
|
|
.name = "min",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{
|
|
.name = "max",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_vf_threshold = {
|
|
.name = "threshold",
|
|
.description = NULL_IF_CONFIG_SMALL("Threshold first video stream using other video streams."),
|
|
.priv_size = sizeof(ThresholdContext),
|
|
.priv_class = &threshold_class,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.activate = activate,
|
|
.inputs = inputs,
|
|
.outputs = outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
|
|
};
|