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FFmpeg/libavfilter/vf_gblur.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.

Keep it for external users in order to not cause breakages.

Also improve the other headers a bit while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-31 00:08:43 +01:00

329 lines
12 KiB
C

/*
* Copyright (c) 2011 Pascal Getreuer
* Copyright (c) 2016 Paul B Mahol
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <float.h>
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "gblur.h"
#include "internal.h"
#include "vf_gblur_init.h"
#include "video.h"
#define OFFSET(x) offsetof(GBlurContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption gblur_options[] = {
{ "sigma", "set sigma", OFFSET(sigma), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0.0, 1024, FLAGS },
{ "steps", "set number of steps", OFFSET(steps), AV_OPT_TYPE_INT, {.i64=1}, 1, 6, FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ "sigmaV", "set vertical sigma", OFFSET(sigmaV), AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1, 1024, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(gblur);
typedef struct ThreadData {
int height;
int width;
} ThreadData;
static int filter_horizontally(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
GBlurContext *s = ctx->priv;
ThreadData *td = arg;
const int height = td->height;
const int width = td->width;
const int slice_start = (height * jobnr ) / nb_jobs;
const int slice_end = (height * (jobnr+1)) / nb_jobs;
const float boundaryscale = s->boundaryscale;
const int steps = s->steps;
const float nu = s->nu;
float *buffer = s->buffer;
float *localbuf = NULL;
if (s->localbuf)
localbuf = s->localbuf + s->stride * width * slice_start;
s->horiz_slice(buffer + width * slice_start, width, slice_end - slice_start,
steps, nu, boundaryscale, localbuf);
return 0;
}
static int filter_vertically(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
GBlurContext *s = ctx->priv;
ThreadData *td = arg;
const int height = td->height;
const int width = td->width;
const int slice_start = (width * jobnr ) / nb_jobs;
const int slice_end = (width * (jobnr+1)) / nb_jobs;
const float boundaryscale = s->boundaryscaleV;
const int steps = s->steps;
const float nu = s->nuV;
float *buffer = s->buffer;
s->verti_slice(buffer, width, height, slice_start, slice_end,
steps, nu, boundaryscale);
return 0;
}
static int filter_postscale(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
GBlurContext *s = ctx->priv;
ThreadData *td = arg;
const float max = s->flt ? FLT_MAX : (1 << s->depth) - 1;
const float min = s->flt ? -FLT_MAX : 0.f;
const int height = td->height;
const int width = td->width;
const int awidth = FFALIGN(width, 64);
const int slice_start = (height * jobnr ) / nb_jobs;
const int slice_end = (height * (jobnr+1)) / nb_jobs;
const float postscale = s->postscale * s->postscaleV;
const int slice_size = slice_end - slice_start;
s->postscale_slice(s->buffer + slice_start * awidth,
slice_size * awidth, postscale, min, max);
return 0;
}
static void gaussianiir2d(AVFilterContext *ctx, int plane)
{
GBlurContext *s = ctx->priv;
const int width = s->planewidth[plane];
const int height = s->planeheight[plane];
const int nb_threads = ff_filter_get_nb_threads(ctx);
ThreadData td;
if (s->sigma < 0 || s->steps < 0)
return;
td.width = width;
td.height = height;
ff_filter_execute(ctx, filter_horizontally, &td,
NULL, FFMIN(height, nb_threads));
ff_filter_execute(ctx, filter_vertically, &td,
NULL, FFMIN(width, nb_threads));
ff_filter_execute(ctx, filter_postscale, &td,
NULL, FFMIN(width * height, nb_threads));
}
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_GBRPF32, AV_PIX_FMT_GBRAPF32,
AV_PIX_FMT_GRAYF32,
AV_PIX_FMT_NONE
};
static av_cold void uninit(AVFilterContext *ctx)
{
GBlurContext *s = ctx->priv;
av_freep(&s->buffer);
av_freep(&s->localbuf);
}
static int config_input(AVFilterLink *inlink)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
GBlurContext *s = inlink->dst->priv;
uninit(inlink->dst);
s->depth = desc->comp[0].depth;
s->flt = !!(desc->flags & AV_PIX_FMT_FLAG_FLOAT);
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->buffer = av_malloc_array(FFALIGN(inlink->w, 64), FFALIGN(inlink->h, 64) * sizeof(*s->buffer));
if (!s->buffer)
return AVERROR(ENOMEM);
if (s->sigmaV < 0) {
s->sigmaV = s->sigma;
}
ff_gblur_init(s);
return 0;
}
static void set_params(float sigma, int steps, float *postscale, float *boundaryscale, float *nu)
{
double dnu, lambda;
lambda = (sigma * sigma) / (2.0 * steps);
dnu = (1.0 + 2.0 * lambda - sqrt(1.0 + 4.0 * lambda)) / (2.0 * lambda);
*postscale = pow(dnu / lambda, steps);
*boundaryscale = 1.0 / (1.0 - dnu);
*nu = (float)dnu;
if (!isnormal(*postscale))
*postscale = 1.f;
if (!isnormal(*boundaryscale))
*boundaryscale = 1.f;
if (!isnormal(*nu))
*nu = 0.f;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
GBlurContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
int plane;
set_params(s->sigma, s->steps, &s->postscale, &s->boundaryscale, &s->nu);
set_params(s->sigmaV, s->steps, &s->postscaleV, &s->boundaryscaleV, &s->nuV);
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++) {
const int height = s->planeheight[plane];
const int width = s->planewidth[plane];
float *bptr = s->buffer;
const uint8_t *src = in->data[plane];
const uint16_t *src16 = (const uint16_t *)in->data[plane];
uint8_t *dst = out->data[plane];
uint16_t *dst16 = (uint16_t *)out->data[plane];
int y, x;
if (!(s->planes & (1 << plane))) {
if (out != in)
av_image_copy_plane(out->data[plane], out->linesize[plane],
in->data[plane], in->linesize[plane],
width * ((s->depth + 7) / 8), height);
continue;
}
if (s->flt) {
av_image_copy_plane((uint8_t *)bptr, width * sizeof(float),
in->data[plane], in->linesize[plane],
width * sizeof(float), height);
} else if (s->depth == 8) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
bptr[x] = src[x];
}
bptr += width;
src += in->linesize[plane];
}
} else {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
bptr[x] = src16[x];
}
bptr += width;
src16 += in->linesize[plane] / 2;
}
}
gaussianiir2d(ctx, plane);
bptr = s->buffer;
if (s->flt) {
av_image_copy_plane(out->data[plane], out->linesize[plane],
(uint8_t *)bptr, width * sizeof(float),
width * sizeof(float), height);
} else if (s->depth == 8) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++)
dst[x] = lrintf(bptr[x]);
bptr += width;
dst += out->linesize[plane];
}
} else {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++)
dst16[x] = lrintf(bptr[x]);
bptr += width;
dst16 += out->linesize[plane] / 2;
}
}
}
if (out != in)
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static const AVFilterPad gblur_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
};
const AVFilter ff_vf_gblur = {
.name = "gblur",
.description = NULL_IF_CONFIG_SMALL("Apply Gaussian Blur filter."),
.priv_size = sizeof(GBlurContext),
.priv_class = &gblur_class,
.uninit = uninit,
FILTER_INPUTS(gblur_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = ff_filter_process_command,
};