mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
9ca88b3bef
Support single input for guided filter by adding guidance mode. If the guidance mode is off, single input is required. And edge-preserving smoothing is conducted. If the mode is on, two inputs are needed. The second input serves as the guidance. For this mode, more tasks are supported, such as detail enhancement, dehazing and so on. Signed-off-by: Xuewei Meng <xwmeng96@gmail.com> Reviewed-by: Steven Liu <lq@chinaffmpeg.org>
506 lines
23 KiB
C
506 lines
23 KiB
C
/*
|
|
* Copyright (c) 2021 Xuewei Meng
|
|
*
|
|
* 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 "filters.h"
|
|
#include "formats.h"
|
|
#include "framesync.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
enum FilterModes {
|
|
BASIC,
|
|
FAST,
|
|
NB_MODES,
|
|
};
|
|
|
|
enum GuidanceModes {
|
|
OFF,
|
|
ON,
|
|
NB_GUIDANCE_MODES,
|
|
};
|
|
|
|
typedef struct GuidedContext {
|
|
const AVClass *class;
|
|
FFFrameSync fs;
|
|
|
|
int radius;
|
|
float eps;
|
|
int mode;
|
|
int sub;
|
|
int guidance;
|
|
int planes;
|
|
|
|
int width;
|
|
int height;
|
|
|
|
int nb_planes;
|
|
int depth;
|
|
int planewidth[4];
|
|
int planeheight[4];
|
|
|
|
int (*box_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
|
|
} GuidedContext;
|
|
|
|
#define OFFSET(x) offsetof(GuidedContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
|
|
|
|
static const AVOption guided_options[] = {
|
|
{ "radius", "set the box radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64 = 3 }, 1, 20, FLAGS },
|
|
{ "eps", "set the regularization parameter (with square)", OFFSET(eps), AV_OPT_TYPE_FLOAT, {.dbl = 0.01 }, 0.0, 1, FLAGS },
|
|
{ "mode", "set filtering mode (0: basic mode; 1: fast mode)", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = BASIC}, BASIC, NB_MODES - 1, FLAGS, "mode" },
|
|
{ "basic", "basic guided filter", 0, AV_OPT_TYPE_CONST, {.i64 = BASIC}, 0, 0, FLAGS, "mode" },
|
|
{ "fast", "fast guided filter", 0, AV_OPT_TYPE_CONST, {.i64 = FAST }, 0, 0, FLAGS, "mode" },
|
|
{ "sub", "subsampling ratio for fast mode", OFFSET(sub), AV_OPT_TYPE_INT, {.i64 = 4 }, 2, 64, FLAGS },
|
|
{ "guidance", "set guidance mode (0: off mode; 1: on mode)", OFFSET(guidance), AV_OPT_TYPE_INT, {.i64 = OFF }, OFF, NB_GUIDANCE_MODES - 1, FLAGS, "guidance" },
|
|
{ "off", "only one input is enabled", 0, AV_OPT_TYPE_CONST, {.i64 = OFF }, 0, 0, FLAGS, "guidance" },
|
|
{ "on", "two inputs are required", 0, AV_OPT_TYPE_CONST, {.i64 = ON }, 0, 0, FLAGS, "guidance" },
|
|
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 0xF, FLAGS },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(guided);
|
|
|
|
typedef struct ThreadData {
|
|
int width;
|
|
int height;
|
|
float *src;
|
|
float *dst;
|
|
int srcStride;
|
|
int dstStride;
|
|
} ThreadData;
|
|
|
|
static int box_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
|
|
{
|
|
GuidedContext *s = ctx->priv;
|
|
ThreadData *t = arg;
|
|
|
|
const int width = t->width;
|
|
const int height = t->height;
|
|
const int src_stride = t->srcStride;
|
|
const int dst_stride = t->dstStride;
|
|
const int slice_start = (height * jobnr) / nb_jobs;
|
|
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
|
|
const int radius = s->radius;
|
|
const float *src = t->src;
|
|
float *dst = t->dst;
|
|
|
|
int w;
|
|
int numPix;
|
|
w = (radius << 1) + 1;
|
|
numPix = w * w;
|
|
for (int i = slice_start;i < slice_end;i++) {
|
|
for (int j = 0;j < width;j++) {
|
|
float temp = 0.0;
|
|
for (int row = -radius;row <= radius;row++) {
|
|
for (int col = -radius;col <= radius;col++) {
|
|
int x = i + row;
|
|
int y = j + col;
|
|
x = (x < 0) ? 0 : (x >= height ? height - 1 : x);
|
|
y = (y < 0) ? 0 : (y >= width ? width - 1 : y);
|
|
temp += src[x * src_stride + y];
|
|
}
|
|
}
|
|
dst[i * dst_stride + j] = temp / numPix;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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_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));
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
GuidedContext *s = ctx->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
if (s->mode == BASIC) {
|
|
s->sub = 1;
|
|
}
|
|
else if (s->mode == FAST) {
|
|
if (s->radius >= s->sub)
|
|
s->radius = s->radius / s->sub;
|
|
else {
|
|
s->radius = 1;
|
|
}
|
|
}
|
|
|
|
s->depth = desc->comp[0].depth;
|
|
s->width = ctx->inputs[0]->w;
|
|
s->height = ctx->inputs[0]->h;
|
|
|
|
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->box_slice = box_slice;
|
|
return 0;
|
|
}
|
|
|
|
#define GUIDED(type, name) \
|
|
static int guided_##name(AVFilterContext *ctx, GuidedContext *s, \
|
|
const uint8_t *ssrc, const uint8_t *ssrcRef, \
|
|
uint8_t *ddst, int radius, float eps, int width, int height, \
|
|
int src_stride, int src_ref_stride, int dst_stride, \
|
|
float maxval) \
|
|
{ \
|
|
int ret = 0; \
|
|
type *dst = (type *)ddst; \
|
|
const type *src = (const type *)ssrc; \
|
|
const type *srcRef = (const type *)ssrcRef; \
|
|
\
|
|
int sub = s->sub; \
|
|
int h = (height % sub) == 0 ? height / sub : height / sub + 1; \
|
|
int w = (width % sub) == 0 ? width / sub : width / sub + 1; \
|
|
\
|
|
ThreadData t; \
|
|
const int nb_threads = ff_filter_get_nb_threads(ctx); \
|
|
float *I; \
|
|
float *II; \
|
|
float *P; \
|
|
float *IP; \
|
|
float *meanI; \
|
|
float *meanII; \
|
|
float *meanP; \
|
|
float *meanIP; \
|
|
float *A; \
|
|
float *B; \
|
|
float *meanA; \
|
|
float *meanB; \
|
|
\
|
|
I = av_calloc(w * h, sizeof(float)); \
|
|
II = av_calloc(w * h, sizeof(float)); \
|
|
P = av_calloc(w * h, sizeof(float)); \
|
|
IP = av_calloc(w * h, sizeof(float)); \
|
|
meanI = av_calloc(w * h, sizeof(float)); \
|
|
meanII = av_calloc(w * h, sizeof(float)); \
|
|
meanP = av_calloc(w * h, sizeof(float)); \
|
|
meanIP = av_calloc(w * h, sizeof(float)); \
|
|
\
|
|
A = av_calloc(w * h, sizeof(float)); \
|
|
B = av_calloc(w * h, sizeof(float)); \
|
|
meanA = av_calloc(w * h, sizeof(float)); \
|
|
meanB = av_calloc(w * h, sizeof(float)); \
|
|
\
|
|
if (!I || !II || !P || !IP || !meanI || !meanII || !meanP || \
|
|
!meanIP || !A || !B || !meanA || !meanB) { \
|
|
ret = AVERROR(ENOMEM); \
|
|
goto end; \
|
|
} \
|
|
for (int i = 0;i < h;i++) { \
|
|
for (int j = 0;j < w;j++) { \
|
|
int x = i * w + j; \
|
|
I[x] = src[(i * src_stride + j) * sub] / maxval; \
|
|
II[x] = I[x] * I[x]; \
|
|
P[x] = srcRef[(i * src_ref_stride + j) * sub] / maxval; \
|
|
IP[x] = I[x] * P[x]; \
|
|
} \
|
|
} \
|
|
\
|
|
t.width = w; \
|
|
t.height = h; \
|
|
t.srcStride = w; \
|
|
t.dstStride = w; \
|
|
t.src = I; \
|
|
t.dst = meanI; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
t.src = II; \
|
|
t.dst = meanII; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
t.src = P; \
|
|
t.dst = meanP; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
t.src = IP; \
|
|
t.dst = meanIP; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
\
|
|
for (int i = 0;i < h;i++) { \
|
|
for (int j = 0;j < w;j++) { \
|
|
int x = i * w + j; \
|
|
float varI = meanII[x] - (meanI[x] * meanI[x]); \
|
|
float covIP = meanIP[x] - (meanI[x] * meanP[x]); \
|
|
A[x] = covIP / (varI + eps); \
|
|
B[x] = meanP[x] - A[x] * meanI[x]; \
|
|
} \
|
|
} \
|
|
\
|
|
t.src = A; \
|
|
t.dst = meanA; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
t.src = B; \
|
|
t.dst = meanB; \
|
|
ctx->internal->execute(ctx, s->box_slice, &t, NULL, FFMIN(h, nb_threads)); \
|
|
\
|
|
for (int i = 0;i < height;i++) { \
|
|
for (int j = 0;j < width;j++) { \
|
|
int x = i / sub * w + j / sub; \
|
|
dst[i * dst_stride + j] = meanA[x] * src[i * src_stride + j] + \
|
|
meanB[x] * maxval; \
|
|
} \
|
|
} \
|
|
end: \
|
|
av_freep(&I); \
|
|
av_freep(&II); \
|
|
av_freep(&P); \
|
|
av_freep(&IP); \
|
|
av_freep(&meanI); \
|
|
av_freep(&meanII); \
|
|
av_freep(&meanP); \
|
|
av_freep(&meanIP); \
|
|
av_freep(&A); \
|
|
av_freep(&B); \
|
|
av_freep(&meanA); \
|
|
av_freep(&meanB); \
|
|
return ret; \
|
|
}
|
|
|
|
GUIDED(uint8_t, byte)
|
|
GUIDED(uint16_t, word)
|
|
|
|
static int filter_frame(AVFilterContext *ctx, AVFrame **out, AVFrame *in, AVFrame *ref)
|
|
{
|
|
GuidedContext *s = ctx->priv;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
*out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!*out)
|
|
return AVERROR(ENOMEM);
|
|
av_frame_copy_props(*out, in);
|
|
|
|
for (int plane = 0; plane < s->nb_planes; plane++) {
|
|
if (!(s->planes & (1 << plane))) {
|
|
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;
|
|
}
|
|
if (s->depth <= 8)
|
|
guided_byte(ctx, s, in->data[plane], ref->data[plane], (*out)->data[plane], s->radius, s->eps,
|
|
s->planewidth[plane], s->planeheight[plane],
|
|
in->linesize[plane], ref->linesize[plane], (*out)->linesize[plane], (1 << s->depth) - 1.f);
|
|
else
|
|
guided_word(ctx, s, in->data[plane], ref->data[plane], (*out)->data[plane], s->radius, s->eps,
|
|
s->planewidth[plane], s->planeheight[plane],
|
|
in->linesize[plane] / 2, ref->linesize[plane] / 2, (*out)->linesize[plane] / 2, (1 << s->depth) - 1.f);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_frame(FFFrameSync *fs)
|
|
{
|
|
AVFilterContext *ctx = fs->parent;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
AVFrame *out_frame = NULL, *main_frame = NULL, *ref_frame = NULL;
|
|
int ret;
|
|
ret = ff_framesync_dualinput_get(fs, &main_frame, &ref_frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = filter_frame(ctx, &out_frame, main_frame, ref_frame);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
av_frame_free(&main_frame);
|
|
|
|
return ff_filter_frame(outlink, out_frame);
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
|
|
GuidedContext *s = ctx->priv;
|
|
AVFilterLink *mainlink = ctx->inputs[0];
|
|
FFFrameSyncIn *in;
|
|
int ret;
|
|
|
|
if (s->guidance == ON) {
|
|
if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
|
|
ctx->inputs[0]->h != ctx->inputs[1]->h) {
|
|
av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
|
|
av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
outlink->w = mainlink->w;
|
|
outlink->h = mainlink->h;
|
|
outlink->time_base = mainlink->time_base;
|
|
outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
|
|
outlink->frame_rate = mainlink->frame_rate;
|
|
|
|
if (s->guidance == OFF)
|
|
return 0;
|
|
|
|
if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
|
|
return ret;
|
|
|
|
outlink->time_base = s->fs.time_base;
|
|
|
|
in = s->fs.in;
|
|
in[0].time_base = mainlink->time_base;
|
|
in[1].time_base = ctx->inputs[1]->time_base;
|
|
in[0].sync = 2;
|
|
in[0].before = EXT_INFINITY;
|
|
in[0].after = EXT_INFINITY;
|
|
in[1].sync = 1;
|
|
in[1].before = EXT_INFINITY;
|
|
in[1].after = EXT_INFINITY;
|
|
s->fs.opaque = s;
|
|
s->fs.on_event = process_frame;
|
|
|
|
return ff_framesync_configure(&s->fs);
|
|
}
|
|
|
|
static int activate(AVFilterContext *ctx)
|
|
{
|
|
GuidedContext *s = ctx->priv;
|
|
AVFrame *frame = NULL;
|
|
AVFrame *out = NULL;
|
|
int ret, status;
|
|
int64_t pts;
|
|
if (s->guidance)
|
|
return ff_framesync_activate(&s->fs);
|
|
|
|
FF_FILTER_FORWARD_STATUS_BACK(ctx->outputs[0], ctx->inputs[0]);
|
|
|
|
if ((ret = ff_inlink_consume_frame(ctx->inputs[0], &frame)) > 0) {
|
|
ret = filter_frame(ctx, &out, frame, frame);
|
|
av_frame_free(&frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = ff_filter_frame(ctx->outputs[0], out);
|
|
}
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ff_inlink_acknowledge_status(ctx->inputs[0], &status, &pts)) {
|
|
ff_outlink_set_status(ctx->outputs[0], status, pts);
|
|
return 0;
|
|
}
|
|
if (ff_outlink_frame_wanted(ctx->outputs[0]))
|
|
ff_inlink_request_frame(ctx->inputs[0]);
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int init(AVFilterContext *ctx)
|
|
{
|
|
GuidedContext *s = ctx->priv;
|
|
AVFilterPad pad = { 0 };
|
|
int ret;
|
|
|
|
pad.type = AVMEDIA_TYPE_VIDEO;
|
|
pad.name = "source";
|
|
pad.config_props = config_input;
|
|
|
|
if ((ret = ff_insert_inpad(ctx, 0, &pad)) < 0)
|
|
return ret;
|
|
|
|
if (s->guidance == ON) {
|
|
pad.type = AVMEDIA_TYPE_VIDEO;
|
|
pad.name = "guidance";
|
|
pad.config_props = NULL;
|
|
|
|
if ((ret = ff_insert_inpad(ctx, 1, &pad)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
GuidedContext *s = ctx->priv;
|
|
if (s->guidance == ON)
|
|
ff_framesync_uninit(&s->fs);
|
|
return;
|
|
}
|
|
|
|
static int process_command(AVFilterContext *ctx,
|
|
const char *cmd,
|
|
const char *arg,
|
|
char *res,
|
|
int res_len,
|
|
int flags)
|
|
{
|
|
int ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const AVFilterPad guided_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
const AVFilter ff_vf_guided = {
|
|
.name = "guided",
|
|
.description = NULL_IF_CONFIG_SMALL("Apply Guided filter."),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.query_formats = query_formats,
|
|
.priv_size = sizeof(GuidedContext),
|
|
.priv_class = &guided_class,
|
|
.activate = activate,
|
|
.inputs = NULL,
|
|
.outputs = guided_outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
|
.process_command = process_command,
|
|
};
|