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FFmpeg/libavfilter/vf_dblur.c
Andreas Rheinhardt 19ffa2ff2d avfilter: Remove unnecessary formats.h inclusions 
A filter needs formats.h iff it uses FILTER_QUERY_FUNC();
since lots of filters have been switched to use something
else than FILTER_QUERY_FUNC, they don't need it any more,
but removing this header has been forgotten.
This commit does this; files with formats.h inclusion went down
from 304 to 139 here (it were 449 before the preceding commit).

While just at it, also improve the other headers a bit.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2023-08-07 09:21:13 +02:00

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/*
* Copyright (c) 2020 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
*/
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct DBlurContext {
const AVClass *class;
float angle;
float radius;
int planes;
float b0, b1, q, c, R3;
int depth;
int planewidth[4];
int planeheight[4];
float *buffer;
int nb_planes;
} DBlurContext;
#define OFFSET(x) offsetof(DBlurContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption dblur_options[] = {
{ "angle", "set angle", OFFSET(angle), AV_OPT_TYPE_FLOAT, {.dbl=45}, 0.0, 360, FLAGS },
{ "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_FLOAT, {.dbl=5}, 0, 8192, FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(dblur);
#define f(n, m) (dst[(n) * width + (m)])
static int filter_horizontally(AVFilterContext *ctx, int width, int height)
{
DBlurContext *s = ctx->priv;
const float b0 = s->b0;
const float b1 = s->b1;
const float q = s->q;
const float c = s->c;
float *dst = s->buffer;
float g;
if (s->R3 > 0) {
for (int y = 1; y < height; y++) {
g = q * f(y, 0) + c * f(y, 0);
for (int x = 0; x < width; x++) {
f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
g = q * f(y, x) + c * f(y - 1, x);
}
}
for (int y = height - 2; y >= 0; y--) {
g = q * f(y, width - 1) + c * f(y, width - 1);
for (int x = width - 1; x >= 0; x--) {
f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
g = q * f(y, x) + c * f(y + 1, x);
}
}
} else {
for (int y = 1; y < height; y++) {
g = q * f(y, width - 1) + c * f(y, width - 1);
for (int x = width - 1; x >= 0; x--) {
f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
g = q * f(y, x) + c * f(y - 1, x);
}
}
for (int y = height - 2; y >= 0; y--) {
g = q * f(y, 0) + c * f(y, 0);
for (int x = 0; x < width; x++) {
f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
g = q * f(y, x) + c * f(y + 1, x);
}
}
}
return 0;
}
static void diriir2d(AVFilterContext *ctx, int plane)
{
DBlurContext *s = ctx->priv;
const int width = s->planewidth[plane];
const int height = s->planeheight[plane];
filter_horizontally(ctx, width, height);
}
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_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
AV_PIX_FMT_NONE
};
static av_cold void uninit(AVFilterContext *ctx)
{
DBlurContext *s = ctx->priv;
av_freep(&s->buffer);
}
static int config_input(AVFilterLink *inlink)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
DBlurContext *s = inlink->dst->priv;
uninit(inlink->dst);
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->buffer = av_malloc_array(FFALIGN(inlink->w, 16), FFALIGN(inlink->h, 16) * sizeof(*s->buffer));
if (!s->buffer)
return AVERROR(ENOMEM);
return 0;
}
static void set_params(DBlurContext *s, float angle, float r)
{
float mu, nu, R1, R2, w1, w2;
float a0, a1, a2, a3;
angle = angle * M_PI / 180.f;
mu = cosf(angle);
nu = sinf(angle);
R1 = (mu * r) * (mu * r);
R2 = (nu * r) * (nu * r);
s->R3 = mu * nu * r * r;
w1 = sqrtf(0.25f + R1);
w2 = sqrtf(0.25f + R2);
a0 = (w1 + 0.5f) * (w2 + 0.5f) - fabsf(s->R3);
a1 = 0.5f + w2 - a0;
a2 = 0.5f + w1 - a0;
a3 = a0 - w1 - w2;
s->b0 = 1.f / a0;
s->b1 = -a2 / a0;
s->q = -a1 / a0;
s->c = -a3 / a0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
DBlurContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
int plane;
set_params(s, s->angle, s->radius);
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];
const float *src32 = (const float *)in->data[plane];
uint8_t *dst = out->data[plane];
uint16_t *dst16 = (uint16_t *)out->data[plane];
float *dst32 = (float *)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->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 if (s->depth <= 16) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
bptr[x] = src16[x];
}
bptr += width;
src16 += in->linesize[plane] / 2;
}
} else {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
memcpy(bptr, src32, width * sizeof(float));
}
bptr += width;
src32 += in->linesize[plane] / 4;
}
}
diriir2d(ctx, plane);
bptr = s->buffer;
if (s->depth == 8) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
dst[x] = av_clip_uint8(lrintf(bptr[x]));
}
bptr += width;
dst += out->linesize[plane];
}
} else if (s->depth <= 16) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
dst16[x] = av_clip_uintp2_c(lrintf(bptr[x]), s->depth);
}
bptr += width;
dst16 += out->linesize[plane] / 2;
}
} else {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
memcpy(dst32, bptr, width * sizeof(float));
}
bptr += width;
dst32 += out->linesize[plane] / 4;
}
}
}
if (out != in)
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static const AVFilterPad dblur_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
};
const AVFilter ff_vf_dblur = {
.name = "dblur",
.description = NULL_IF_CONFIG_SMALL("Apply Directional Blur filter."),
.priv_size = sizeof(DBlurContext),
.priv_class = &dblur_class,
.uninit = uninit,
FILTER_INPUTS(dblur_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
.process_command = ff_filter_process_command,
};
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