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avfilter/vf_yaepblur: add yaepblur filter 

Signed-off-by: leozhang <leozhang@qiyi.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
leozhang 2019-11-25 17:53:05 +08:00 committed by Michael Niedermayer
parent 039a0ebe6f
commit 0c7f9f714d
5 changed files with 374 additions and 1 deletions
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22
doc/filters.texi
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@ -19918,6 +19918,28 @@ Only deinterlace frames marked as interlaced.
The default value is @code{all}.
@end table
@section yaepblur
Apply blur filter while preserving edges ("yaepblur" means "yet another edge preserving blur filter").
The algorithm is described in
"J. S. Lee, Digital image enhancement and noise filtering by use of local statistics, IEEE Trans. Pattern Anal. Mach. Intell. PAMI-2, 1980."
It accepts the following parameters:
@table @option
@item radius, r
Set the window radius. Default value is 3.
@item planes, p
Set which planes to filter. Default is only the first plane.
@item sigma, s
Set blur strength. Default value is 128.
@end table
@subsection Commands
This filter supports same @ref{commands} as options.
@section zoompan
Apply Zoom & Pan effect.

1
libavfilter/Makefile
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@ -443,6 +443,7 @@ OBJS-$(CONFIG_XSTACK_FILTER) += vf_stack.o framesync.o
OBJS-$(CONFIG_YADIF_FILTER) += vf_yadif.o yadif_common.o
OBJS-$(CONFIG_YADIF_CUDA_FILTER) += vf_yadif_cuda.o vf_yadif_cuda.ptx.o \
yadif_common.o
OBJS-$(CONFIG_YAEPBLUR_FILTER) += vf_yaepblur.o
OBJS-$(CONFIG_ZMQ_FILTER) += f_zmq.o
OBJS-$(CONFIG_ZOOMPAN_FILTER) += vf_zoompan.o
OBJS-$(CONFIG_ZSCALE_FILTER) += vf_zscale.o

1
libavfilter/allfilters.c
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@ -421,6 +421,7 @@ extern AVFilter ff_vf_xmedian;
extern AVFilter ff_vf_xstack;
extern AVFilter ff_vf_yadif;
extern AVFilter ff_vf_yadif_cuda;
extern AVFilter ff_vf_yaepblur;
extern AVFilter ff_vf_zmq;
extern AVFilter ff_vf_zoompan;
extern AVFilter ff_vf_zscale;

2
libavfilter/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 7
#define LIBAVFILTER_VERSION_MINOR 67
#define LIBAVFILTER_VERSION_MINOR 68
#define LIBAVFILTER_VERSION_MICRO 100

349
libavfilter/vf_yaepblur.c Normal file
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@ -0,0 +1,349 @@
/*
* Copyright (C) 2019 Leo Zhang <leozhang@qiyi.com>
* 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
* yaep(yet another edge preserving) blur filter
*
* This implementation is based on an algorithm described in
* "J. S. Lee, Digital image enhancement and noise filtering by use of local statistics, IEEE Trans. Pattern
* Anal. Mach. Intell. PAMI-2, 1980."
*/
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "internal.h"
typedef struct YAEPContext {
const AVClass *class;
int planes;
int radius;
int sigma;
int nb_planes;
int planewidth[4];
int planeheight[4];
int depth;
uint64_t *sat; ///< summed area table
uint64_t *square_sat; ///< square summed area table
int sat_linesize;
int (*pre_calculate_row)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
int (*filter_slice )(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} YAEPContext;
static av_cold void uninit(AVFilterContext *ctx)
{
YAEPContext *s = ctx->priv;
av_freep(&s->sat);
av_freep(&s->square_sat);
}
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_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_NONE
};
return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
}
typedef struct ThreadData {
int width;
int height;
int src_linesize;
int dst_linesize;
uint8_t *src;
uint8_t *dst;
} ThreadData;
#define PRE_CALCULATE_ROW(type, name) \
static int pre_calculate_row_##name(AVFilterContext *ctx, void *arg, \
int jobnr, int nb_jobs) \
{ \
ThreadData *td = arg; \
YAEPContext *s = ctx->priv; \
\
const int width = td->width; \
const int height = td->height; \
const int linesize = td->src_linesize / sizeof(type); \
const int sat_linesize = s->sat_linesize; \
\
const int starty = height * jobnr / nb_jobs; \
const int endy = height * (jobnr+1) / nb_jobs; \
\
uint64_t *sat = s->sat + (starty + 1) * sat_linesize; \
uint64_t *square_sat = s->square_sat + (starty + 1) * sat_linesize; \
const type *src = (const type *)td->src + starty * linesize; \
\
int x, y; \
\
for (y = starty; y < endy; y++) { \
for (x = 0; x < width; x++) { \
sat[x+1] = sat[x] + src[x]; \
square_sat[x+1] = square_sat[x] + (uint64_t)src[x] * src[x]; \
} \
sat += sat_linesize; \
square_sat += sat_linesize; \
src += linesize; \
} \
\
return 0; \
}
PRE_CALCULATE_ROW(uint8_t, byte)
PRE_CALCULATE_ROW(uint16_t, word)
static int pre_calculate_col(AVFilterContext *ctx, void *arg,
int jobnr, int nb_jobs)
{
ThreadData *td = arg;
YAEPContext *s = ctx->priv;
const int width = td->width;
const int height = td->height;
const int sat_linesize = s->sat_linesize;
const int startx = width * jobnr / nb_jobs;
const int endx = width * (jobnr + 1) / nb_jobs;
uint64_t *sat, *square_sat;
int x, y;
for (x = startx; x < endx; x++) {
sat = s->sat + x + 1;
square_sat = s->square_sat + x + 1;
for (y = 0; y < height; y++) {
*(sat+sat_linesize) += *sat;
*(square_sat+sat_linesize) += *square_sat;
sat += sat_linesize;
square_sat += sat_linesize;
}
}
return 0;
}
#define FILTER_SLICE(type, name) \
static int filter_slice_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ThreadData *td = arg; \
YAEPContext *s = ctx->priv; \
\
const int width = td->width; \
const int height = td->height; \
const int src_linesize = td->src_linesize / sizeof(type); \
const int dst_linesize = td->dst_linesize / sizeof(type); \
const int sat_linesize = s->sat_linesize; \
const int sigma = s->sigma; \
const int radius = s->radius; \
\
uint64_t *sat = s->sat; \
uint64_t *square_sat = s->square_sat; \
const type *src = (const type *)td->src; \
type *dst = (type *)td->dst; \
\
const int starty = height * jobnr / nb_jobs; \
const int endy = height * (jobnr + 1) / nb_jobs; \
\
int x, y; \
int lower_x, higher_x; \
int lower_y, higher_y; \
int dist_y, count; \
uint64_t sum, square_sum, mean, var; \
\
for (y = starty; y < endy; y++) { \
lower_y = y - radius < 0 ? 0 : y - radius; \
higher_y = y + radius + 1 > height ? height : y + radius + 1; \
dist_y = higher_y - lower_y; \
for (x = 0; x < width; x++) { \
lower_x = x - radius < 0 ? 0 : x - radius; \
higher_x = x + radius + 1 > width ? width : x + radius + 1; \
count = dist_y * (higher_x - lower_x); \
sum = sat[higher_y * sat_linesize + higher_x] \
- sat[higher_y * sat_linesize + lower_x] \
- sat[lower_y * sat_linesize + higher_x] \
+ sat[lower_y * sat_linesize + lower_x]; \
square_sum = square_sat[higher_y * sat_linesize + higher_x] \
- square_sat[higher_y * sat_linesize + lower_x] \
- square_sat[lower_y * sat_linesize + higher_x] \
+ square_sat[lower_y * sat_linesize + lower_x]; \
mean = sum / count; \
var = (square_sum - sum * sum / count) / count; \
dst[y * dst_linesize + x] = (sigma * mean + var * src[y * src_linesize + x]) / (sigma + var); \
} \
} \
return 0; \
}
FILTER_SLICE(uint8_t, byte)
FILTER_SLICE(uint16_t, word)
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
YAEPContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
int plane;
const int nb_threads = ff_filter_get_nb_threads(ctx);
ThreadData td;
if (av_frame_is_writable(in)) {
out = in;
} else {
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);
}
for (plane = 0; plane < s->nb_planes; plane++) {
if (!s->radius || !(s->planes & (1<<plane))) {
if (out != in) {
av_image_copy_plane(out->data[plane], out->linesize[plane],
in->data[plane], in->linesize[plane],
s->planewidth[plane] * ((s->depth + 7) / 8),
s->planeheight[plane]);
}
continue;
}
td.width = s->planewidth[plane];
td.height = s->planeheight[plane];
td.src = in->data[plane];
td.src_linesize = in->linesize[plane];
ctx->internal->execute(ctx, s->pre_calculate_row, &td, NULL, FFMIN(td.height, nb_threads));
ctx->internal->execute(ctx, pre_calculate_col, &td, NULL, FFMIN(td.width, nb_threads));
td.dst = out->data[plane];
td.dst_linesize = out->linesize[plane];
ctx->internal->execute(ctx, s->filter_slice, &td, NULL, FFMIN(td.height, nb_threads));
}
if (out != in)
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static int config_input(AVFilterLink *inlink)
{
YAEPContext *s = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
s->depth = desc->comp[0].depth;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
s->radius = FFMIN(s->radius, AV_CEIL_RSHIFT(FFMIN(inlink->w, inlink->h), 1));
if (s->depth <= 8) {
s->pre_calculate_row = pre_calculate_row_byte;
s->filter_slice = filter_slice_byte;
} else {
s->pre_calculate_row = pre_calculate_row_word;
s->filter_slice = filter_slice_word;
}
// padding one row on the top, and padding one col on the left, that is why + 1 below
s->sat_linesize = inlink->w + 1;
s->sat = av_mallocz_array(inlink->h + 1, s->sat_linesize*sizeof(*s->sat));
if (!s->sat)
return AVERROR(ENOMEM);
s->square_sat = av_mallocz_array(inlink->h + 1, s->sat_linesize*sizeof(*s->square_sat));
if (!s->square_sat)
return AVERROR(ENOMEM);
return 0;
}
static const AVFilterPad yaep_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
};
static const AVFilterPad yaep_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
#define OFFSET(x) offsetof(YAEPContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption yaep_options[] = {
{ "radius", "set window radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=3}, 0, INT_MAX, .flags=FLAGS },
{ "r" , "set window radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=3}, 0, INT_MAX, .flags=FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, .flags=FLAGS },
{ "p", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, .flags=FLAGS },
{ "sigma", "set blur strength", OFFSET(sigma), AV_OPT_TYPE_INT, {.i64=128}, 1, INT_MAX, .flags=FLAGS },
{ "s", "set blur strength", OFFSET(sigma), AV_OPT_TYPE_INT, {.i64=128}, 1, INT_MAX, .flags=FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(yaep);
AVFilter ff_vf_yaepblur = {
.name = "yaepblur",
.description = NULL_IF_CONFIG_SMALL("Yet another edge preserving blur filter."),
.priv_size = sizeof(YAEPContext),
.priv_class = &yaep_class,
.uninit = uninit,
.query_formats = query_formats,
.inputs = yaep_inputs,
.outputs = yaep_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = ff_filter_process_command,
};