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FFmpeg/libavfilter/vf_identity.c
Anton Khirnov 6d75d44d90 lavfi: drop internal.h
All that remains in it are things that belong in avfilter_internal.h.

Move them there and remove internal.h
2024-08-19 21:48:04 +02:00

448 lines
14 KiB
C

/*
* Copyright (c) 2021 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
*/
/**
* @file
* Calculate the Identity between two input videos.
*/
#include "config_components.h"
#include "libavutil/avstring.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "filters.h"
#include "framesync.h"
#include "scene_sad.h"
typedef struct IdentityContext {
const AVClass *class;
FFFrameSync fs;
double score, min_score, max_score, score_comp[4];
uint64_t nb_frames;
int is_rgb;
int is_msad;
uint8_t rgba_map[4];
int max[4];
char comps[4];
int nb_components;
int nb_threads;
int planewidth[4];
int planeheight[4];
uint64_t **scores;
unsigned (*filter_line)(const uint8_t *buf, const uint8_t *ref, int w);
int (*filter_slice)(AVFilterContext *ctx, void *arg,
int jobnr, int nb_jobs);
ff_scene_sad_fn sad;
} IdentityContext;
#define OFFSET(x) offsetof(IdentityContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static unsigned identity_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
{
unsigned score = 0;
for (int j = 0; j < outw; j++)
score += main_line[j] == ref_line[j];
return score;
}
static unsigned identity_line_16bit(const uint8_t *mmain_line, const uint8_t *rref_line, int outw)
{
const uint16_t *main_line = (const uint16_t *)mmain_line;
const uint16_t *ref_line = (const uint16_t *)rref_line;
unsigned score = 0;
for (int j = 0; j < outw; j++)
score += main_line[j] == ref_line[j];
return score;
}
typedef struct ThreadData {
const uint8_t *main_data[4];
const uint8_t *ref_data[4];
int main_linesize[4];
int ref_linesize[4];
int planewidth[4];
int planeheight[4];
uint64_t **score;
int nb_components;
} ThreadData;
static
int compute_images_msad(AVFilterContext *ctx, void *arg,
int jobnr, int nb_jobs)
{
IdentityContext *s = ctx->priv;
ThreadData *td = arg;
uint64_t *score = td->score[jobnr];
for (int c = 0; c < td->nb_components; c++) {
const int outw = td->planewidth[c];
const int outh = td->planeheight[c];
const int slice_start = (outh * jobnr) / nb_jobs;
const int slice_end = (outh * (jobnr+1)) / nb_jobs;
const int ref_linesize = td->ref_linesize[c];
const int main_linesize = td->main_linesize[c];
const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
uint64_t m = 0;
s->sad(main_line, main_linesize, ref_line, ref_linesize,
outw, slice_end - slice_start, &m);
score[c] = m;
}
return 0;
}
static
int compute_images_identity(AVFilterContext *ctx, void *arg,
int jobnr, int nb_jobs)
{
IdentityContext *s = ctx->priv;
ThreadData *td = arg;
uint64_t *score = td->score[jobnr];
for (int c = 0; c < td->nb_components; c++) {
const int outw = td->planewidth[c];
const int outh = td->planeheight[c];
const int slice_start = (outh * jobnr) / nb_jobs;
const int slice_end = (outh * (jobnr+1)) / nb_jobs;
const int ref_linesize = td->ref_linesize[c];
const int main_linesize = td->main_linesize[c];
const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
uint64_t m = 0;
for (int i = slice_start; i < slice_end; i++) {
m += s->filter_line(main_line, ref_line, outw);
ref_line += ref_linesize;
main_line += main_linesize;
}
score[c] = m;
}
return 0;
}
static void set_meta(AVFilterContext *ctx,
AVDictionary **metadata, const char *key, char comp, float d)
{
char value[128];
snprintf(value, sizeof(value), "%f", d);
if (comp) {
char key2[128];
snprintf(key2, sizeof(key2), "lavfi.%s.%s%s%c",
ctx->filter->name, ctx->filter->name, key, comp);
av_dict_set(metadata, key2, value, 0);
} else {
char key2[128];
snprintf(key2, sizeof(key2), "lavfi.%s.%s%s",
ctx->filter->name, ctx->filter->name, key);
av_dict_set(metadata, key2, value, 0);
}
}
static int do_identity(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
IdentityContext *s = ctx->priv;
AVFrame *master, *ref;
double comp_score[4], score = 0.;
uint64_t comp_sum[4] = { 0 };
AVDictionary **metadata;
ThreadData td;
int ret;
ret = ff_framesync_dualinput_get(fs, &master, &ref);
if (ret < 0)
return ret;
if (ctx->is_disabled || !ref)
return ff_filter_frame(ctx->outputs[0], master);
metadata = &master->metadata;
td.nb_components = s->nb_components;
td.score = s->scores;
for (int c = 0; c < s->nb_components; c++) {
td.main_data[c] = master->data[c];
td.ref_data[c] = ref->data[c];
td.main_linesize[c] = master->linesize[c];
td.ref_linesize[c] = ref->linesize[c];
td.planewidth[c] = s->planewidth[c];
td.planeheight[c] = s->planeheight[c];
}
ff_filter_execute(ctx, s->filter_slice, &td, NULL,
FFMIN(s->planeheight[1], s->nb_threads));
for (int j = 0; j < s->nb_threads; j++) {
for (int c = 0; c < s->nb_components; c++)
comp_sum[c] += s->scores[j][c];
}
for (int c = 0; c < s->nb_components; c++)
comp_score[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
for (int c = 0; c < s->nb_components && s->is_msad; c++)
comp_score[c] /= (double)s->max[c];
for (int c = 0; c < s->nb_components; c++)
score += comp_score[c];
score /= s->nb_components;
s->min_score = FFMIN(s->min_score, score);
s->max_score = FFMAX(s->max_score, score);
s->score += score;
for (int j = 0; j < s->nb_components; j++)
s->score_comp[j] += comp_score[j];
s->nb_frames++;
for (int j = 0; j < s->nb_components; j++) {
int c = s->is_rgb ? s->rgba_map[j] : j;
set_meta(ctx, metadata, ".", s->comps[j], comp_score[c]);
}
set_meta(ctx, metadata, "_avg", 0, score);
return ff_filter_frame(ctx->outputs[0], master);
}
static av_cold int init(AVFilterContext *ctx)
{
IdentityContext *s = ctx->priv;
s->fs.on_event = do_identity;
return 0;
}
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
#define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
#define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
#define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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_NONE
};
static int config_input_ref(AVFilterLink *inlink)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
AVFilterContext *ctx = inlink->dst;
IdentityContext *s = ctx->priv;
s->nb_threads = ff_filter_get_nb_threads(ctx);
s->nb_components = desc->nb_components;
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);
}
s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
s->comps[0] = s->is_rgb ? 'R' : 'Y' ;
s->comps[1] = s->is_rgb ? 'G' : 'U' ;
s->comps[2] = s->is_rgb ? 'B' : 'V' ;
s->comps[3] = 'A';
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->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->scores = av_calloc(s->nb_threads, sizeof(*s->scores));
if (!s->scores)
return AVERROR(ENOMEM);
for (int t = 0; t < s->nb_threads; t++) {
s->scores[t] = av_calloc(s->nb_components, sizeof(*s->scores[0]));
if (!s->scores[t])
return AVERROR(ENOMEM);
}
s->min_score = +INFINITY;
s->max_score = -INFINITY;
s->max[0] = (1 << desc->comp[0].depth) - 1;
s->max[1] = (1 << desc->comp[1].depth) - 1;
s->max[2] = (1 << desc->comp[2].depth) - 1;
s->max[3] = (1 << desc->comp[3].depth) - 1;
s->is_msad = !strcmp(ctx->filter->name, "msad");
s->filter_slice = !s->is_msad ? compute_images_identity : compute_images_msad;
s->filter_line = desc->comp[0].depth > 8 ? identity_line_16bit : identity_line_8bit;
s->sad = ff_scene_sad_get_fn(desc->comp[0].depth <= 8 ? 8 : 16);
if (!s->sad)
return AVERROR(EINVAL);
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
IdentityContext *s = ctx->priv;
AVFilterLink *mainlink = ctx->inputs[0];
FilterLink *il = ff_filter_link(mainlink);
FilterLink *ol = ff_filter_link(outlink);
int ret;
ret = ff_framesync_init_dualinput(&s->fs, ctx);
if (ret < 0)
return ret;
outlink->w = mainlink->w;
outlink->h = mainlink->h;
outlink->time_base = mainlink->time_base;
outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
ol->frame_rate = il->frame_rate;
if ((ret = ff_framesync_configure(&s->fs)) < 0)
return ret;
outlink->time_base = s->fs.time_base;
if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
av_log(ctx, AV_LOG_WARNING, "not matching timebases found between first input: %d/%d and second input %d/%d, results may be incorrect!\n",
mainlink->time_base.num, mainlink->time_base.den,
ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
return 0;
}
static int activate(AVFilterContext *ctx)
{
IdentityContext *s = ctx->priv;
return ff_framesync_activate(&s->fs);
}
static av_cold void uninit(AVFilterContext *ctx)
{
IdentityContext *s = ctx->priv;
if (s->nb_frames > 0) {
char buf[256];
buf[0] = 0;
for (int j = 0; j < s->nb_components; j++) {
int c = s->is_rgb ? s->rgba_map[j] : j;
av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], s->score_comp[c] / s->nb_frames);
}
av_log(ctx, AV_LOG_INFO, "%s%s average:%f min:%f max:%f\n",
ctx->filter->name,
buf,
s->score / s->nb_frames,
s->min_score,
s->max_score);
}
ff_framesync_uninit(&s->fs);
for (int t = 0; t < s->nb_threads && s->scores; t++)
av_freep(&s->scores[t]);
av_freep(&s->scores);
}
static const AVFilterPad identity_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_VIDEO,
},{
.name = "reference",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input_ref,
},
};
static const AVFilterPad identity_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
static const AVOption options[] = {
{ NULL }
};
#if CONFIG_IDENTITY_FILTER
#define identity_options options
FRAMESYNC_DEFINE_CLASS(identity, IdentityContext, fs);
const AVFilter ff_vf_identity = {
.name = "identity",
.description = NULL_IF_CONFIG_SMALL("Calculate the Identity between two video streams."),
.preinit = identity_framesync_preinit,
.init = init,
.uninit = uninit,
.activate = activate,
.priv_size = sizeof(IdentityContext),
.priv_class = &identity_class,
FILTER_INPUTS(identity_inputs),
FILTER_OUTPUTS(identity_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
AVFILTER_FLAG_SLICE_THREADS |
AVFILTER_FLAG_METADATA_ONLY,
};
#endif /* CONFIG_IDENTITY_FILTER */
#if CONFIG_MSAD_FILTER
#define msad_options options
FRAMESYNC_DEFINE_CLASS(msad, IdentityContext, fs);
const AVFilter ff_vf_msad = {
.name = "msad",
.description = NULL_IF_CONFIG_SMALL("Calculate the MSAD between two video streams."),
.preinit = msad_framesync_preinit,
.init = init,
.uninit = uninit,
.activate = activate,
.priv_size = sizeof(IdentityContext),
.priv_class = &msad_class,
FILTER_INPUTS(identity_inputs),
FILTER_OUTPUTS(identity_outputs),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
AVFILTER_FLAG_SLICE_THREADS |
AVFILTER_FLAG_METADATA_ONLY,
};
#endif /* CONFIG_MSAD_FILTER */