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FFmpeg/libavfilter/vf_avgblur.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

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/*
* Copyright (c) 2016 Paul B Mahol
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct AverageBlurContext {
const AVClass *class;
int radius;
int radiusV;
int planes;
int depth;
int max;
int area;
int planewidth[4];
int planeheight[4];
void *buffer;
uint16_t lut[256 * 256 * 256];
int nb_planes;
int (*filter[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} AverageBlurContext;
#define OFFSET(x) offsetof(AverageBlurContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption avgblur_options[] = {
{ "sizeX", "set horizontal size", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(avgblur);
typedef struct ThreadData {
int height;
int width;
const void *ptr;
void *dptr;
int linesize, dlinesize;
} ThreadData;
#define LUT_DIV(sum, area) (lut[(sum)])
#define SLOW_DIV(sum, area) ((sum) / (area))
#define FILTER(name, type, btype, lutunused, areaunused, lutdiv) \
static int filter_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
AverageBlurContext *s = ctx->priv; \
ThreadData *td = arg; \
areaunused const int area = s->area; \
lutunused const uint16_t *lut = s->lut; \
const int size_w = s->radius; \
const int size_h = s->radiusV; \
btype *col_sum = (btype *)s->buffer + size_w; \
const int dlinesize = td->dlinesize / sizeof(type); \
const int linesize = td->linesize / sizeof(type); \
const int height = td->height; \
const int width = td->width; \
const type *src = td->ptr; \
type *dst = td->dptr; \
btype sum = 0; \
\
for (int x = -size_w; x < 0; x++) { \
sum = src[0] * size_h; \
for (int y = 0; y <= size_h; y++) \
sum += src[y * linesize]; \
av_assert2(sum >= 0); \
col_sum[x] = sum; \
} \
\
for (int x = 0; x < width; x++) { \
sum = src[x] * size_h; \
for (int y = 0; y <= size_h; y++) \
sum += src[x + y * linesize]; \
av_assert2(sum >= 0); \
col_sum[x] = sum; \
} \
\
for (int x = width; x < width + size_w; x++) { \
sum = src[width - 1] * size_h; \
for (int y = 0; y <= size_h; y++) \
sum += src[width - 1 + y * linesize]; \
av_assert2(sum >= 0); \
col_sum[x] = sum; \
} \
\
sum = 0; \
for (int x = -size_w; x <= size_w; x++) \
sum += col_sum[x]; \
av_assert2(sum >= 0); \
dst[0] = lutdiv(sum, area); \
\
for (int x = 1; x < width; x++) { \
sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \
av_assert2(sum >= 0); \
dst[x] = lutdiv(sum, area); \
} \
\
src = td->ptr; \
src += linesize; \
dst += dlinesize; \
\
for (int y = 1; y < height; y++) { \
const int syp = FFMIN(size_h, height - y - 1) * linesize; \
const int syn = FFMIN(y, size_h + 1) * linesize; \
\
sum = 0; \
\
for (int x = -size_w; x < 0; x++) \
col_sum[x] += src[0 + syp] - src[0 - syn]; \
\
for (int x = 0; x < width; x++) \
col_sum[x] += src[x + syp] - src[x - syn]; \
\
for (int x = width; x < width + size_w; x++) \
col_sum[x] += src[width - 1 + syp] - src[width - 1 - syn]; \
\
for (int x = -size_w; x <= size_w; x++) \
sum += col_sum[x]; \
av_assert2(sum >= 0); \
dst[0] = lutdiv(sum, area); \
\
for (int x = 1; x < width; x++) { \
sum = sum - col_sum[x - size_w - 1] + col_sum[x + size_w]; \
av_assert2(sum >= 0); \
dst[x] = lutdiv(sum, area); \
} \
\
src += linesize; \
dst += dlinesize; \
} \
\
return 0; \
}
FILTER(lut8, uint8_t, int32_t, , av_unused, LUT_DIV)
FILTER(lut16, uint16_t, int64_t, , av_unused, LUT_DIV)
FILTER(slow8, uint8_t, int32_t, av_unused, , SLOW_DIV)
FILTER(slow16, uint16_t, int64_t, av_unused, , SLOW_DIV)
static void build_lut(AVFilterContext *ctx, int max)
{
AverageBlurContext *s = ctx->priv;
const int area = (2 * s->radiusV + 1) * (2 * s->radius + 1);
s->area = area;
if (max * area >= FF_ARRAY_ELEMS(s->lut))
return;
for (int i = 0, j = 0, k = 0; i < max * area; i++, j++) {
if (j == area) {
k++;
j = 0;
}
s->lut[i] = k;
}
}
static av_cold void uninit(AVFilterContext *ctx)
{
AverageBlurContext *s = ctx->priv;
av_freep(&s->buffer);
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
AverageBlurContext *s = ctx->priv;
uninit(ctx);
s->depth = desc->comp[0].depth;
s->max = 1 << s->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_calloc(inlink->w + (1024 * 2 + 1), 4 * ((s->depth + 7) / 8));
if (!s->buffer)
return AVERROR(ENOMEM);
if (s->radiusV <= 0)
s->radiusV = s->radius;
s->filter[0] = s->depth <= 8 ? filter_lut8 : filter_lut16;
s->filter[1] = s->depth <= 8 ? filter_slow8 : filter_slow16;
s->radius = FFMIN(s->planewidth[1] / 2, s->radius);
s->radiusV = FFMIN(s->planeheight[1] / 2, s->radiusV);
build_lut(ctx, s->max);
return 0;
}
static void averageiir2d(AVFilterContext *ctx, AVFrame *in, AVFrame *out, int plane)
{
AverageBlurContext *s = ctx->priv;
const int width = s->planewidth[plane];
const int height = s->planeheight[plane];
const int slow = (s->max * s->area) >= FF_ARRAY_ELEMS(s->lut);
ThreadData td;
td.width = width;
td.height = height;
td.ptr = in->data[plane];
td.linesize = in->linesize[plane];
td.dptr = out->data[plane];
td.dlinesize = out->linesize[plane];
s->filter[slow](ctx, &td, 0, 0);
}
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
};
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AverageBlurContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out;
int plane;
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];
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;
}
averageiir2d(ctx, in, out, plane);
}
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
AverageBlurContext *s = ctx->priv;
const int area = s->area;
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
if (s->radiusV <= 0)
s->radiusV = s->radius;
s->radius = FFMIN(s->planewidth[1] / 2, s->radius);
s->radiusV = FFMIN(s->planeheight[1] / 2, s->radiusV);
if (area != (2 * s->radiusV + 1) * (2 * s->radius + 1))
build_lut(ctx, s->max);
return 0;
}
static const AVFilterPad avgblur_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.filter_frame = filter_frame,
},
};
const AVFilter ff_vf_avgblur = {
.name = "avgblur",
.description = NULL_IF_CONFIG_SMALL("Apply Average Blur filter."),
.priv_size = sizeof(AverageBlurContext),
.priv_class = &avgblur_class,
.uninit = uninit,
FILTER_INPUTS(avgblur_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
.process_command = process_command,
};
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