/*
* Copyright (c) 2013 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/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "framesync.h"
typedef struct InputParam {
int depth[4];
int nb_planes;
int planewidth[4];
int planeheight[4];
} InputParam;
typedef struct MergePlanesContext {
const AVClass *class;
int64_t mapping;
const enum AVPixelFormat out_fmt;
int nb_inputs;
int nb_planes;
int planewidth[4];
int planeheight[4];
int map[4][2];
const AVPixFmtDescriptor *outdesc;
FFFrameSync fs;
FFFrameSyncIn fsin[3]; /* must be immediately after fs */
} MergePlanesContext;
#define OFFSET(x) offsetof(MergePlanesContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption mergeplanes_options[] = {
{ "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS },
{ "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, .flags=FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(mergeplanes);
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
MergePlanesContext *s = inlink->dst->priv;
return ff_framesync_filter_frame(&s->fs, inlink, in);
}
static av_cold int init(AVFilterContext *ctx)
{
MergePlanesContext *s = ctx->priv;
int64_t m = s->mapping;
int i, ret;
s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
s->outdesc->nb_components < 2) {
av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");
return AVERROR(EINVAL);
}
s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
for (i = s->nb_planes - 1; i >= 0; i--) {
s->map[i][0] = m & 0xf;
m >>= 4;
s->map[i][1] = m & 0xf;
m >>= 4;
if (s->map[i][0] > 3 || s->map[i][1] > 3) {
av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
return AVERROR(EINVAL);
}
s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1);
}
av_assert0(s->nb_inputs && s->nb_inputs <= 4);
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_VIDEO;
pad.name = av_asprintf("in%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
pad.filter_frame = filter_frame;
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){
av_freep(&pad.name);
return ret;
}
}
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
MergePlanesContext *s = ctx->priv;
AVFilterFormats *formats = NULL;
int i;
s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
for (i = 0; i < AV_PIX_FMT_NB; i++) {
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
if (desc->comp[0].depth_minus1 == s->outdesc->comp[0].depth_minus1 &&
av_pix_fmt_count_planes(i) == desc->nb_components)
ff_add_format(&formats, i);
}
for (i = 0; i < s->nb_inputs; i++)
ff_formats_ref(formats, &ctx->inputs[i]->out_formats);
formats = NULL;
ff_add_format(&formats, s->out_fmt);
ff_formats_ref(formats, &ctx->outputs[0]->in_formats);
return 0;
}
static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
AVFilterLink *outlink = ctx->outputs[0];
MergePlanesContext *s = fs->opaque;
AVFrame *in[4] = { NULL };
AVFrame *out;
int i, ret;
for (i = 0; i < s->nb_inputs; i++) {
if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
return ret;
}
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
for (i = 0; i < s->nb_planes; i++) {
const int input = s->map[i][1];
const int plane = s->map[i][0];
av_image_copy_plane(out->data[i], out->linesize[i],
in[input]->data[plane], in[input]->linesize[plane],
s->planewidth[i], s->planeheight[i]);
}
return ff_filter_frame(outlink, out);
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
MergePlanesContext *s = ctx->priv;
InputParam inputsp[4];
FFFrameSyncIn *in;
int i;
ff_framesync_init(&s->fs, ctx, s->nb_inputs);
in = s->fs.in;
s->fs.opaque = s;
s->fs.on_event = process_frame;
outlink->w = ctx->inputs[0]->w;
outlink->h = ctx->inputs[0]->h;
outlink->time_base = ctx->inputs[0]->time_base;
outlink->frame_rate = ctx->inputs[0]->frame_rate;
outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;
s->planewidth[1] =
s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w);
s->planewidth[0] =
s->planewidth[3] = outlink->w;
s->planeheight[1] =
s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);
s->planeheight[0] =
s->planeheight[3] = outlink->h;
for (i = 0; i < s->nb_inputs; i++) {
InputParam *inputp = &inputsp[i];
AVFilterLink *inlink = ctx->inputs[i];
const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format);
int j;
if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "
"does not match output link %s SAR %d:%d\n",
i, ctx->input_pads[i].name,
inlink->sample_aspect_ratio.num,
inlink->sample_aspect_ratio.den,
ctx->output_pads[0].name,
outlink->sample_aspect_ratio.num,
outlink->sample_aspect_ratio.den);
return AVERROR(EINVAL);
}
inputp->planewidth[1] =
inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w);
inputp->planewidth[0] =
inputp->planewidth[3] = inlink->w;
inputp->planeheight[1] =
inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h);
inputp->planeheight[0] =
inputp->planeheight[3] = inlink->h;
inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);
for (j = 0; j < inputp->nb_planes; j++)
inputp->depth[j] = indesc->comp[j].depth_minus1 + 1;
in[i].time_base = inlink->time_base;
in[i].sync = 1;
in[i].before = EXT_STOP;
in[i].after = EXT_STOP;
}
for (i = 0; i < s->nb_planes; i++) {
const int input = s->map[i][1];
const int plane = s->map[i][0];
InputParam *inputp = &inputsp[input];
if (plane + 1 > inputp->nb_planes) {
av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",
input, plane);
goto fail;
}
if (s->outdesc->comp[i].depth_minus1 + 1 != inputp->depth[plane]) {
av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "
"match input %d plane %d depth %d\n",
i, s->outdesc->comp[i].depth_minus1 + 1,
input, plane, inputp->depth[plane]);
goto fail;
}
if (s->planewidth[i] != inputp->planewidth[plane]) {
av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "
"match input %d plane %d width %d\n",
i, s->planewidth[i],
input, plane, inputp->planewidth[plane]);
goto fail;
}
if (s->planeheight[i] != inputp->planeheight[plane]) {
av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "
"match input %d plane %d height %d\n",
i, s->planeheight[i],
input, plane, inputp->planeheight[plane]);
goto fail;
}
}
return ff_framesync_configure(&s->fs);
fail:
return AVERROR(EINVAL);
}
static int request_frame(AVFilterLink *outlink)
{
MergePlanesContext *s = outlink->src->priv;
return ff_framesync_request_frame(&s->fs, outlink);
}
static av_cold void uninit(AVFilterContext *ctx)
{
MergePlanesContext *s = ctx->priv;
int i;
ff_framesync_uninit(&s->fs);
for (i = 0; i < ctx->nb_inputs; i++)
av_freep(&ctx->input_pads[i].name);
}
static const AVFilterPad mergeplanes_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
};
AVFilter avfilter_vf_mergeplanes = {
.name = "mergeplanes",
.description = NULL_IF_CONFIG_SMALL("Merge planes."),
.priv_size = sizeof(MergePlanesContext),
.priv_class = &mergeplanes_class,
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = NULL,
.outputs = mergeplanes_outputs,
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
};