/*
* Copyright (c) 2016 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/pixdesc.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include "framesync.h"
#define OFFSET(x) offsetof(MaskedClampContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
typedef struct ThreadData {
AVFrame *b, *o, *m, *d;
} ThreadData;
typedef struct MaskedClampContext {
const AVClass *class;
int planes;
int undershoot;
int overshoot;
int linesize[4];
int width[4], height[4];
int nb_planes;
int depth;
FFFrameSync fs;
int (*maskedclamp)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} MaskedClampContext;
static const AVOption maskedclamp_options[] = {
{ "undershoot", "set undershoot", OFFSET(undershoot), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
{ "overshoot", "set overshoot", OFFSET(overshoot), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(maskedclamp);
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 process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
MaskedClampContext *s = fs->opaque;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out, *base, *dark, *bright;
int ret;
if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 1, &dark, 0)) < 0 ||
(ret = ff_framesync_get_frame(&s->fs, 2, &bright, 0)) < 0)
return ret;
if (ctx->is_disabled) {
out = av_frame_clone(base);
if (!out)
return AVERROR(ENOMEM);
} else {
ThreadData td;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
av_frame_copy_props(out, base);
td.b = base;
td.o = dark;
td.m = bright;
td.d = out;
ctx->internal->execute(ctx, s->maskedclamp, &td, NULL, FFMIN(s->height[0],
ff_filter_get_nb_threads(ctx)));
}
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, out);
}
static int maskedclamp8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
MaskedClampContext *s = ctx->priv;
ThreadData *td = arg;
int p;
for (p = 0; p < s->nb_planes; p++) {
const ptrdiff_t blinesize = td->b->linesize[p];
const ptrdiff_t brightlinesize = td->m->linesize[p];
const ptrdiff_t darklinesize = td->o->linesize[p];
const ptrdiff_t dlinesize = td->d->linesize[p];
const int w = s->width[p];
const int h = s->height[p];
const int slice_start = (h * jobnr) / nb_jobs;
const int slice_end = (h * (jobnr+1)) / nb_jobs;
const uint8_t *bsrc = td->b->data[p] + slice_start * blinesize;
const uint8_t *darksrc = td->o->data[p] + slice_start * darklinesize;
const uint8_t *brightsrc = td->m->data[p] + slice_start * brightlinesize;
uint8_t *dst = td->d->data[p] + slice_start * dlinesize;
const int undershoot = s->undershoot;
const int overshoot = s->overshoot;
int x, y;
if (!((1 << p) & s->planes)) {
av_image_copy_plane(dst, dlinesize, bsrc, blinesize,
s->linesize[p], slice_end - slice_start);
continue;
}
for (y = slice_start; y < slice_end; y++) {
for (x = 0; x < w; x++) {
if (bsrc[x] < darksrc[x] - undershoot)
dst[x] = darksrc[x] - undershoot;
else if (bsrc[x] > brightsrc[x] + overshoot)
dst[x] = brightsrc[x] + overshoot;
else
dst[x] = bsrc[x];
}
dst += dlinesize;
bsrc += blinesize;
darksrc += darklinesize;
brightsrc += brightlinesize;
}
}
return 0;
}
static int maskedclamp16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
MaskedClampContext *s = ctx->priv;
ThreadData *td = arg;
int p;
for (p = 0; p < s->nb_planes; p++) {
const ptrdiff_t blinesize = td->b->linesize[p] / 2;
const ptrdiff_t brightlinesize = td->m->linesize[p] / 2;
const ptrdiff_t darklinesize = td->o->linesize[p] / 2;
const ptrdiff_t dlinesize = td->d->linesize[p] / 2;
const int w = s->width[p];
const int h = s->height[p];
const int slice_start = (h * jobnr) / nb_jobs;
const int slice_end = (h * (jobnr+1)) / nb_jobs;
const uint16_t *bsrc = (const uint16_t *)td->b->data[p] + slice_start * blinesize;
const uint16_t *darksrc = (const uint16_t *)td->o->data[p] + slice_start * darklinesize;
const uint16_t *brightsrc = (const uint16_t *)td->m->data[p] + slice_start * brightlinesize;
uint16_t *dst = (uint16_t *)td->d->data[p] + slice_start * dlinesize;
const int undershoot = s->undershoot;
const int overshoot = s->overshoot;
int x, y;
if (!((1 << p) & s->planes)) {
av_image_copy_plane((uint8_t *)dst, dlinesize, (const uint8_t *)bsrc, blinesize,
s->linesize[p], slice_end - slice_start);
continue;
}
for (y = slice_start; y < slice_end; y++) {
for (x = 0; x < w; x++) {
if (bsrc[x] < darksrc[x] - undershoot)
dst[x] = darksrc[x] - undershoot;
else if (bsrc[x] > brightsrc[x] + overshoot)
dst[x] = brightsrc[x] + overshoot;
else
dst[x] = bsrc[x];
}
dst += dlinesize;
bsrc += blinesize;
darksrc += darklinesize;
brightsrc += brightlinesize;
}
}
return 0;
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
MaskedClampContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int vsub, hsub, ret;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
return ret;
hsub = desc->log2_chroma_w;
vsub = desc->log2_chroma_h;
s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
s->height[0] = s->height[3] = inlink->h;
s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
s->width[0] = s->width[3] = inlink->w;
s->depth = desc->comp[0].depth;
if (desc->comp[0].depth == 8)
s->maskedclamp = maskedclamp8;
else
s->maskedclamp = maskedclamp16;
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
MaskedClampContext *s = ctx->priv;
AVFilterLink *base = ctx->inputs[0];
AVFilterLink *dark = ctx->inputs[1];
AVFilterLink *bright = ctx->inputs[2];
FFFrameSyncIn *in;
int ret;
if (base->format != dark->format ||
base->format != bright->format) {
av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
return AVERROR(EINVAL);
}
if (base->w != dark->w || base->h != dark->h ||
base->w != bright->w || base->h != bright->h) {
av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
"(size %dx%d) do not match the corresponding "
"second input link %s parameters (%dx%d) "
"and/or third input link %s parameters (size %dx%d)\n",
ctx->input_pads[0].name, base->w, base->h,
ctx->input_pads[1].name, dark->w, dark->h,
ctx->input_pads[2].name, bright->w, bright->h);
return AVERROR(EINVAL);
}
outlink->w = base->w;
outlink->h = base->h;
outlink->time_base = base->time_base;
outlink->sample_aspect_ratio = base->sample_aspect_ratio;
outlink->frame_rate = base->frame_rate;
if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
return ret;
in = s->fs.in;
in[0].time_base = base->time_base;
in[1].time_base = dark->time_base;
in[2].time_base = bright->time_base;
in[0].sync = 1;
in[0].before = EXT_STOP;
in[0].after = EXT_INFINITY;
in[1].sync = 1;
in[1].before = EXT_STOP;
in[1].after = EXT_INFINITY;
in[2].sync = 1;
in[2].before = EXT_STOP;
in[2].after = EXT_INFINITY;
s->fs.opaque = s;
s->fs.on_event = process_frame;
return ff_framesync_configure(&s->fs);
}
static int activate(AVFilterContext *ctx)
{
MaskedClampContext *s = ctx->priv;
return ff_framesync_activate(&s->fs);
}
static av_cold void uninit(AVFilterContext *ctx)
{
MaskedClampContext *s = ctx->priv;
ff_framesync_uninit(&s->fs);
}
static const AVFilterPad maskedclamp_inputs[] = {
{
.name = "base",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
},
{
.name = "dark",
.type = AVMEDIA_TYPE_VIDEO,
},
{
.name = "bright",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
static const AVFilterPad maskedclamp_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
{ NULL }
};
AVFilter ff_vf_maskedclamp = {
.name = "maskedclamp",
.description = NULL_IF_CONFIG_SMALL("Clamp first stream with second stream and third stream."),
.priv_size = sizeof(MaskedClampContext),
.uninit = uninit,
.activate = activate,
.query_formats = query_formats,
.inputs = maskedclamp_inputs,
.outputs = maskedclamp_outputs,
.priv_class = &maskedclamp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
};