avfilter: add feedback video filter
This commit is contained in:
Paul B Mahol
parent
a34fe3dfa9
commit
7e81295488
|
|
@ -9,6 +9,7 @@ version 5.1:
|
|||
- SITI filter
|
||||
- Vizrt Binary Image encoder/decoder
|
||||
- avsynctest source filter
|
||||
- feedback video filter
|
||||
|
||||
|
||||
version 5.0:
|
||||
|
|
|
|||
|
|
@ -12181,6 +12181,44 @@ fade=t=in:st=5.5:d=0.5
|
|||
|
||||
@end itemize
|
||||
|
||||
@section feedback
|
||||
Apply feedback video filter.
|
||||
|
||||
This filter pass cropped input frames to 2nd output.
|
||||
From there it can be filtered with other video filters.
|
||||
After filter receives frame from 2nd input, that frame
|
||||
is combined on top of original frame from 1st input and passed
|
||||
to 1st output.
|
||||
|
||||
The typical usage is filter only part of frame.
|
||||
|
||||
The filter accepts the following options:
|
||||
@table @option
|
||||
@item x
|
||||
@item y
|
||||
Set the top left crop position.
|
||||
|
||||
@item w
|
||||
@item h
|
||||
Set the crop size.
|
||||
@end table
|
||||
|
||||
@subsection Examples
|
||||
|
||||
@itemize
|
||||
@item
|
||||
Blur only top left rectangular part of video frame size 100x100 with gblur filter.
|
||||
@example
|
||||
[in][blurin]feedback=x=0:y=0:w=100:h=100[out][blurout];[blurout]gblur=8[blurin]
|
||||
@end example
|
||||
|
||||
@item
|
||||
Draw black box on top left part of video frame of size 100x100 with drawbox filter.
|
||||
@example
|
||||
[in][blurin]feedback=x=0:y=0:w=100:h=100[out][blurout];[blurout]drawbox=x=0:y=0:w=100:h=100:t=100[blurin]
|
||||
@end example
|
||||
@end itemize
|
||||
|
||||
@section fftdnoiz
|
||||
Denoise frames using 3D FFT (frequency domain filtering).
|
||||
|
||||
|
|
|
|||
|
|
@ -277,6 +277,7 @@ OBJS-$(CONFIG_ESTDIF_FILTER) += vf_estdif.o
|
|||
OBJS-$(CONFIG_EXPOSURE_FILTER) += vf_exposure.o
|
||||
OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o
|
||||
OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o
|
||||
OBJS-$(CONFIG_FEEDBACK_FILTER) += vf_feedback.o
|
||||
OBJS-$(CONFIG_FFTDNOIZ_FILTER) += vf_fftdnoiz.o
|
||||
OBJS-$(CONFIG_FFTFILT_FILTER) += vf_fftfilt.o
|
||||
OBJS-$(CONFIG_FIELD_FILTER) += vf_field.o
|
||||
|
|
|
|||
|
|
@ -259,6 +259,7 @@ extern const AVFilter ff_vf_estdif;
|
|||
extern const AVFilter ff_vf_exposure;
|
||||
extern const AVFilter ff_vf_extractplanes;
|
||||
extern const AVFilter ff_vf_fade;
|
||||
extern const AVFilter ff_vf_feedback;
|
||||
extern const AVFilter ff_vf_fftdnoiz;
|
||||
extern const AVFilter ff_vf_fftfilt;
|
||||
extern const AVFilter ff_vf_field;
|
||||
|
|
|
|||
|
|
@ -31,7 +31,7 @@
|
|||
|
||||
#include "version_major.h"
|
||||
|
||||
#define LIBAVFILTER_VERSION_MINOR 31
|
||||
#define LIBAVFILTER_VERSION_MINOR 32
|
||||
#define LIBAVFILTER_VERSION_MICRO 100
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,332 @@
|
|||
/*
|
||||
* 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
|
||||
* feedback video filter
|
||||
*/
|
||||
|
||||
#include "libavutil/fifo.h"
|
||||
#include "libavutil/imgutils.h"
|
||||
#include "libavutil/opt.h"
|
||||
#include "libavutil/internal.h"
|
||||
#include "avfilter.h"
|
||||
#include "filters.h"
|
||||
#include "internal.h"
|
||||
#include "video.h"
|
||||
|
||||
typedef struct FeedbackContext {
|
||||
const AVClass *class;
|
||||
|
||||
int x, y;
|
||||
int w, h;
|
||||
|
||||
int max_step[4];
|
||||
int hsub, vsub;
|
||||
|
||||
AVFrame *feed;
|
||||
|
||||
AVFifo *fifo;
|
||||
} FeedbackContext;
|
||||
|
||||
static void adjust_pos(AVFilterContext *ctx, FeedbackContext *s)
|
||||
{
|
||||
if (s->x + s->w > ctx->inputs[0]->w)
|
||||
s->x = ctx->inputs[0]->w - s->w;
|
||||
if (s->y + s->h > ctx->inputs[0]->h)
|
||||
s->y = ctx->inputs[0]->h - s->h;
|
||||
}
|
||||
|
||||
static void adjust_parameters(AVFilterContext *ctx, FeedbackContext *s)
|
||||
{
|
||||
if (s->x >= ctx->inputs[0]->w)
|
||||
s->x = 0;
|
||||
if (s->y >= ctx->inputs[0]->h)
|
||||
s->y = 0;
|
||||
|
||||
if (s->w <= 0)
|
||||
s->w = ctx->inputs[0]->w - s->x;
|
||||
if (s->h <= 0)
|
||||
s->h = ctx->inputs[0]->h - s->y;
|
||||
|
||||
if (s->w > ctx->inputs[0]->w)
|
||||
s->w = ctx->inputs[0]->w;
|
||||
if (s->h > ctx->inputs[0]->h)
|
||||
s->h = ctx->inputs[0]->h;
|
||||
|
||||
adjust_pos(ctx, s);
|
||||
}
|
||||
|
||||
static int config_input(AVFilterLink *inlink)
|
||||
{
|
||||
AVFilterContext *ctx = inlink->dst;
|
||||
const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
|
||||
FeedbackContext *s = ctx->priv;
|
||||
|
||||
s->hsub = pix_desc->log2_chroma_w;
|
||||
s->vsub = pix_desc->log2_chroma_h;
|
||||
|
||||
av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
|
||||
|
||||
adjust_parameters(ctx, s);
|
||||
|
||||
ctx->inputs[1]->w = s->w;
|
||||
ctx->inputs[1]->h = s->h;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int config_output(AVFilterLink *outlink)
|
||||
{
|
||||
AVFilterContext *ctx = outlink->src;
|
||||
FeedbackContext *s = ctx->priv;
|
||||
|
||||
adjust_parameters(ctx, s);
|
||||
|
||||
ctx->outputs[0]->w = ctx->inputs[0]->w;
|
||||
ctx->outputs[0]->h = ctx->inputs[0]->h;
|
||||
ctx->outputs[1]->w = s->w;
|
||||
ctx->outputs[1]->h = s->h;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int query_formats(AVFilterContext *ctx)
|
||||
{
|
||||
return ff_set_common_formats(ctx, ff_formats_pixdesc_filter(0, AV_PIX_FMT_FLAG_BITSTREAM |
|
||||
AV_PIX_FMT_FLAG_HWACCEL |
|
||||
AV_PIX_FMT_FLAG_PAL));
|
||||
}
|
||||
|
||||
static int activate(AVFilterContext *ctx)
|
||||
{
|
||||
FeedbackContext *s = ctx->priv;
|
||||
int status, ret;
|
||||
int64_t pts;
|
||||
|
||||
adjust_pos(ctx, s);
|
||||
|
||||
for (int i = 0; i < ctx->nb_outputs; i++)
|
||||
FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[i], ctx);
|
||||
|
||||
if (!s->feed) {
|
||||
ret = ff_inlink_consume_frame(ctx->inputs[1], &s->feed);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (s->feed && av_fifo_can_read(s->fifo)) {
|
||||
AVFrame *src = s->feed;
|
||||
AVFrame *dst = NULL;
|
||||
|
||||
av_fifo_read(s->fifo, &dst, 1);
|
||||
if (!dst)
|
||||
return AVERROR_BUG;
|
||||
|
||||
if (!av_frame_is_writable(dst)) {
|
||||
AVFrame *tmp = ff_get_video_buffer(ctx->outputs[0], ctx->outputs[0]->w, ctx->outputs[0]->h);
|
||||
|
||||
if (!tmp) {
|
||||
av_frame_free(&dst);
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
ret = av_frame_copy(tmp, dst);
|
||||
if (ret < 0) {
|
||||
av_frame_free(&dst);
|
||||
av_frame_free(&tmp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
av_frame_copy_props(tmp, dst);
|
||||
av_frame_free(&dst);
|
||||
dst = tmp;
|
||||
}
|
||||
|
||||
for (int y = 0; y < src->height; y++) {
|
||||
memmove(dst->data[0] + (s->y + y) * dst->linesize[0] + s->x * s->max_step[0],
|
||||
src->data[0] + y * src->linesize[0], src->width * s->max_step[0]);
|
||||
}
|
||||
|
||||
for (int i = 1; i < 3; i ++) {
|
||||
if (dst->data[i]) {
|
||||
for (int y = 0; y < src->height; y++) {
|
||||
memmove(dst->data[i] + ((s->y + y) >> s->vsub) * dst->linesize[i] + ((s->x * s->max_step[i]) >> s->hsub),
|
||||
src->data[i] + (y >> s->vsub) * src->linesize[i], (src->width * s->max_step[i]) >> s->hsub);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (dst->data[3]) {
|
||||
for (int y = 0; y < src->height; y++) {
|
||||
memmove(dst->data[3] + (s->y + y) * dst->linesize[3] + s->x * s->max_step[3],
|
||||
src->data[3] + y * src->linesize[3], src->width * s->max_step[3]);
|
||||
}
|
||||
}
|
||||
|
||||
ret = ff_filter_frame(ctx->outputs[0], dst);
|
||||
av_frame_free(&s->feed);
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (!s->feed) {
|
||||
AVFrame *in = NULL;
|
||||
|
||||
ret = ff_inlink_consume_frame(ctx->inputs[0], &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ret > 0) {
|
||||
AVFrame *frame;
|
||||
|
||||
ret = av_fifo_write(s->fifo, &in, 1);
|
||||
if (ret < 0) {
|
||||
av_frame_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
frame = av_frame_clone(in);
|
||||
if (!frame)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
frame->width = s->w;
|
||||
frame->height = s->h;
|
||||
|
||||
frame->data[0] += s->y * frame->linesize[0];
|
||||
frame->data[0] += s->x * s->max_step[0];
|
||||
|
||||
for (int i = 1; i < 3; i ++) {
|
||||
if (frame->data[i]) {
|
||||
frame->data[i] += (s->y >> s->vsub) * frame->linesize[i];
|
||||
frame->data[i] += (s->x * s->max_step[i]) >> s->hsub;
|
||||
}
|
||||
}
|
||||
|
||||
if (frame->data[3]) {
|
||||
frame->data[3] += s->y * frame->linesize[3];
|
||||
frame->data[3] += s->x * s->max_step[3];
|
||||
}
|
||||
|
||||
return ff_filter_frame(ctx->outputs[1], frame);
|
||||
}
|
||||
}
|
||||
|
||||
if (ff_inlink_acknowledge_status(ctx->inputs[0], &status, &pts)) {
|
||||
ff_outlink_set_status(ctx->outputs[0], status, pts);
|
||||
ff_outlink_set_status(ctx->outputs[1], status, pts);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (ff_inlink_acknowledge_status(ctx->inputs[1], &status, &pts)) {
|
||||
ff_outlink_set_status(ctx->outputs[0], status, pts);
|
||||
ff_outlink_set_status(ctx->outputs[1], status, pts);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!s->feed) {
|
||||
if (ff_outlink_frame_wanted(ctx->outputs[0])) {
|
||||
ff_inlink_request_frame(ctx->inputs[0]);
|
||||
ff_inlink_request_frame(ctx->inputs[1]);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return FFERROR_NOT_READY;
|
||||
}
|
||||
|
||||
static av_cold int init(AVFilterContext *ctx)
|
||||
{
|
||||
FeedbackContext *s = ctx->priv;
|
||||
|
||||
s->fifo = av_fifo_alloc2(8, sizeof(AVFrame *), AV_FIFO_FLAG_AUTO_GROW);
|
||||
if (!s->fifo)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static av_cold void uninit(AVFilterContext *ctx)
|
||||
{
|
||||
FeedbackContext *s = ctx->priv;
|
||||
if (s->fifo) {
|
||||
size_t size = av_fifo_can_read(s->fifo);
|
||||
|
||||
for (size_t n = 0; n < size; n++) {
|
||||
AVFrame *frame = NULL;
|
||||
|
||||
av_fifo_read(s->fifo, &frame, 1);
|
||||
|
||||
av_frame_free(&frame);
|
||||
}
|
||||
|
||||
av_fifo_freep2(&s->fifo);
|
||||
}
|
||||
}
|
||||
|
||||
static const AVFilterPad inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = config_input,
|
||||
},
|
||||
{
|
||||
.name = "feedin",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = config_input,
|
||||
},
|
||||
};
|
||||
|
||||
static const AVFilterPad outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = config_output,
|
||||
},
|
||||
{
|
||||
.name = "feedout",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = config_output,
|
||||
},
|
||||
};
|
||||
|
||||
#define OFFSET(x) offsetof(FeedbackContext, x)
|
||||
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
|
||||
#define TFLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM)
|
||||
|
||||
static const AVOption feedback_options[] = {
|
||||
{ "x", "set top left crop position", OFFSET(x), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, TFLAGS },
|
||||
{ "y", "set top left crop position", OFFSET(y), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, TFLAGS },
|
||||
{ "w", "set crop size", OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
|
||||
{ "h", "set crop size", OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
AVFILTER_DEFINE_CLASS(feedback);
|
||||
|
||||
const AVFilter ff_vf_feedback = {
|
||||
.name = "feedback",
|
||||
.description = NULL_IF_CONFIG_SMALL("Apply feedback video filter."),
|
||||
.priv_class = &feedback_class,
|
||||
.priv_size = sizeof(FeedbackContext),
|
||||
.activate = activate,
|
||||
.init = init,
|
||||
.uninit = uninit,
|
||||
FILTER_INPUTS(inputs),
|
||||
FILTER_OUTPUTS(outputs),
|
||||
FILTER_QUERY_FUNC(query_formats),
|
||||
};
|
||||
Loading…
Reference in New Issue