mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 11:19:55 +00:00
avfilter: add threshold filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
parent
ebb83e2dc0
commit
acf1dd5b74
@ -19,6 +19,7 @@ version <next>:
|
||||
- Sample Dump eXchange demuxer
|
||||
- abitscope multimedia filter
|
||||
- Scenarist Closed Captions demuxer and muxer
|
||||
- threshold filter
|
||||
|
||||
version 3.2:
|
||||
- libopenmpt demuxer
|
||||
|
@ -13192,6 +13192,63 @@ PAL output (25i):
|
||||
16p: 33333334
|
||||
@end example
|
||||
|
||||
@section threshold
|
||||
|
||||
Apply threshold effect to video stream.
|
||||
|
||||
This filter needs four video streams to perform thresholding.
|
||||
First stream is stream we are filtering.
|
||||
Second stream is holding threshold values, third stream is holding min values,
|
||||
and last, fourth stream is holding max values.
|
||||
|
||||
The filter accepts the following option:
|
||||
|
||||
@table @option
|
||||
@item planes
|
||||
Set which planes will be processed, unprocessed planes will be copied.
|
||||
By default value 0xf, all planes will be processed.
|
||||
@end table
|
||||
|
||||
For example if first stream pixel's component value is less then threshold value
|
||||
of pixel component from 2nd threshold stream, third stream value will picked,
|
||||
otherwise fourth stream pixel component value will be picked.
|
||||
|
||||
Using color source filter one can perform various types of thresholding:
|
||||
|
||||
@subsection Examples
|
||||
|
||||
@itemize
|
||||
@item
|
||||
Binary threshold, using gray color as threshold:
|
||||
@example
|
||||
ffmpeg -i 320x240.avi -f lavfi -i color=gray -f lavfi -i color=black -f lavfi -i color=white -lavfi threshold output.avi
|
||||
@end example
|
||||
|
||||
@item
|
||||
Inverted binary threshold, using gray color as threshold:
|
||||
@example
|
||||
ffmpeg -i 320x240.avi -f lavfi -i color=gray -f lavfi -i color=white -f lavfi -i color=black -lavfi threshold output.avi
|
||||
@end example
|
||||
|
||||
@item
|
||||
Truncate binary threshold, using gray color as threshold:
|
||||
@example
|
||||
ffmpeg -i 320x240.avi -f lavfi -i color=gray -i 320x240.avi -f lavfi -i color=gray -lavfi threshold output.avi
|
||||
@end example
|
||||
|
||||
@item
|
||||
Threshold to zero, using gray color as threshold:
|
||||
@example
|
||||
ffmpeg -i 320x240.avi -f lavfi -i color=gray -f lavfi -i color=white -i 320x240.avi -lavfi threshold output.avi
|
||||
@end example
|
||||
|
||||
@item
|
||||
Inverted threshold to zero, using gray color as threshold:
|
||||
@example
|
||||
ffmpeg -i 320x240.avi -f lavfi -i color=gray -i 320x240.avi -f lavfi -i color=white -lavfi threshold output.avi
|
||||
@end example
|
||||
@end itemize
|
||||
|
||||
@section thumbnail
|
||||
Select the most representative frame in a given sequence of consecutive frames.
|
||||
|
||||
|
@ -289,6 +289,7 @@ OBJS-$(CONFIG_SWAPRECT_FILTER) += vf_swaprect.o
|
||||
OBJS-$(CONFIG_SWAPUV_FILTER) += vf_swapuv.o
|
||||
OBJS-$(CONFIG_TBLEND_FILTER) += vf_blend.o dualinput.o framesync.o
|
||||
OBJS-$(CONFIG_TELECINE_FILTER) += vf_telecine.o
|
||||
OBJS-$(CONFIG_THRESHOLD_FILTER) += vf_threshold.o
|
||||
OBJS-$(CONFIG_THUMBNAIL_FILTER) += vf_thumbnail.o
|
||||
OBJS-$(CONFIG_TILE_FILTER) += vf_tile.o
|
||||
OBJS-$(CONFIG_TINTERLACE_FILTER) += vf_tinterlace.o
|
||||
|
@ -304,6 +304,7 @@ void avfilter_register_all(void)
|
||||
REGISTER_FILTER(SWAPUV, swapuv, vf);
|
||||
REGISTER_FILTER(TBLEND, tblend, vf);
|
||||
REGISTER_FILTER(TELECINE, telecine, vf);
|
||||
REGISTER_FILTER(THRESHOLD, threshold, vf);
|
||||
REGISTER_FILTER(THUMBNAIL, thumbnail, vf);
|
||||
REGISTER_FILTER(TILE, tile, vf);
|
||||
REGISTER_FILTER(TINTERLACE, tinterlace, vf);
|
||||
|
@ -30,7 +30,7 @@
|
||||
#include "libavutil/version.h"
|
||||
|
||||
#define LIBAVFILTER_VERSION_MAJOR 6
|
||||
#define LIBAVFILTER_VERSION_MINOR 71
|
||||
#define LIBAVFILTER_VERSION_MINOR 72
|
||||
#define LIBAVFILTER_VERSION_MICRO 100
|
||||
|
||||
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
|
||||
|
349
libavfilter/vf_threshold.c
Normal file
349
libavfilter/vf_threshold.c
Normal file
@ -0,0 +1,349 @@
|
||||
/*
|
||||
* 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 "framesync.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_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 ||
|
||||
(ret = ff_framesync_get_frame(&s->fs, 1, &threshold, 0)) < 0 ||
|
||||
(ret = ff_framesync_get_frame(&s->fs, 2, &min, 0)) < 0 ||
|
||||
(ret = ff_framesync_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_framesync_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_framesync_configure(&s->fs);
|
||||
}
|
||||
|
||||
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
|
||||
{
|
||||
ThresholdContext *s = inlink->dst->priv;
|
||||
return ff_framesync_filter_frame(&s->fs, inlink, buf);
|
||||
}
|
||||
|
||||
static int request_frame(AVFilterLink *outlink)
|
||||
{
|
||||
ThresholdContext *s = outlink->src->priv;
|
||||
return ff_framesync_request_frame(&s->fs, outlink);
|
||||
}
|
||||
|
||||
static av_cold void uninit(AVFilterContext *ctx)
|
||||
{
|
||||
ThresholdContext *s = ctx->priv;
|
||||
|
||||
ff_framesync_uninit(&s->fs);
|
||||
}
|
||||
|
||||
static const AVFilterPad inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
.config_props = config_input,
|
||||
},
|
||||
{
|
||||
.name = "threshold",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
},
|
||||
{
|
||||
.name = "min",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
},
|
||||
{
|
||||
.name = "max",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static const AVFilterPad outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = config_output,
|
||||
.request_frame = request_frame,
|
||||
},
|
||||
{ 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,
|
||||
.inputs = inputs,
|
||||
.outputs = outputs,
|
||||
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
|
||||
};
|
Loading…
Reference in New Issue
Block a user