mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-12-05 01:56:41 +00:00
319440e54f
Signed-off-by: Paul B Mahol <onemda@gmail.com>
272 lines
7.9 KiB
C
272 lines
7.9 KiB
C
/*
|
|
* Copyright (c) 2015 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/avstring.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "framesync.h"
|
|
#include "video.h"
|
|
|
|
typedef struct StackContext {
|
|
const AVClass *class;
|
|
const AVPixFmtDescriptor *desc;
|
|
int nb_inputs;
|
|
int is_vertical;
|
|
int nb_planes;
|
|
|
|
AVFrame **frames;
|
|
FFFrameSync fs;
|
|
} StackContext;
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
AVFilterFormats *pix_fmts = NULL;
|
|
int fmt;
|
|
|
|
for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
|
|
if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
|
|
desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
|
|
desc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
|
|
ff_add_format(&pix_fmts, fmt);
|
|
}
|
|
|
|
return ff_set_common_formats(ctx, pix_fmts);
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
StackContext *s = inlink->dst->priv;
|
|
return ff_framesync_filter_frame(&s->fs, inlink, in);
|
|
}
|
|
|
|
static av_cold int init(AVFilterContext *ctx)
|
|
{
|
|
StackContext *s = ctx->priv;
|
|
int i, ret;
|
|
|
|
if (!strcmp(ctx->filter->name, "vstack"))
|
|
s->is_vertical = 1;
|
|
|
|
s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
|
|
if (!s->frames)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (i = 0; i < s->nb_inputs; i++) {
|
|
AVFilterPad pad = { 0 };
|
|
|
|
pad.type = AVMEDIA_TYPE_VIDEO;
|
|
pad.name = av_asprintf("input%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 process_frame(FFFrameSync *fs)
|
|
{
|
|
AVFilterContext *ctx = fs->parent;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
StackContext *s = fs->opaque;
|
|
AVFrame **in = s->frames;
|
|
AVFrame *out;
|
|
int i, p, ret, offset[4] = { 0 };
|
|
|
|
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_inputs; i++) {
|
|
AVFilterLink *inlink = ctx->inputs[i];
|
|
int linesize[4];
|
|
int height[4];
|
|
|
|
if ((ret = av_image_fill_linesizes(linesize, inlink->format, inlink->w)) < 0)
|
|
return ret;
|
|
|
|
height[1] = height[2] = FF_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
|
|
height[0] = height[3] = inlink->h;
|
|
|
|
for (p = 0; p < s->nb_planes; p++) {
|
|
if (s->is_vertical) {
|
|
av_image_copy_plane(out->data[p] + offset[p] * out->linesize[p],
|
|
out->linesize[p],
|
|
in[i]->data[p],
|
|
in[i]->linesize[p],
|
|
linesize[p], height[p]);
|
|
offset[p] += height[p];
|
|
} else {
|
|
av_image_copy_plane(out->data[p] + offset[p],
|
|
out->linesize[p],
|
|
in[i]->data[p],
|
|
in[i]->linesize[p],
|
|
linesize[p], height[p]);
|
|
offset[p] += linesize[p];
|
|
}
|
|
}
|
|
}
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
StackContext *s = ctx->priv;
|
|
AVRational time_base = ctx->inputs[0]->time_base;
|
|
AVRational frame_rate = ctx->inputs[0]->frame_rate;
|
|
int height = ctx->inputs[0]->h;
|
|
int width = ctx->inputs[0]->w;
|
|
FFFrameSyncIn *in;
|
|
int i, ret;
|
|
|
|
if (s->is_vertical) {
|
|
for (i = 1; i < s->nb_inputs; i++) {
|
|
if (ctx->inputs[i]->w != width) {
|
|
av_log(ctx, AV_LOG_ERROR, "Input %d width %d does not match input %d width %d.\n", i, ctx->inputs[i]->w, 0, width);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
height += ctx->inputs[i]->h;
|
|
}
|
|
} else {
|
|
for (i = 1; i < s->nb_inputs; i++) {
|
|
if (ctx->inputs[i]->h != height) {
|
|
av_log(ctx, AV_LOG_ERROR, "Input %d height %d does not match input %d height %d.\n", i, ctx->inputs[i]->h, 0, height);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
width += ctx->inputs[i]->w;
|
|
}
|
|
}
|
|
|
|
s->desc = av_pix_fmt_desc_get(outlink->format);
|
|
if (!s->desc)
|
|
return AVERROR_BUG;
|
|
s->nb_planes = av_pix_fmt_count_planes(outlink->format);
|
|
|
|
outlink->w = width;
|
|
outlink->h = height;
|
|
outlink->time_base = time_base;
|
|
outlink->frame_rate = frame_rate;
|
|
|
|
if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
|
|
return ret;
|
|
|
|
in = s->fs.in;
|
|
s->fs.opaque = s;
|
|
s->fs.on_event = process_frame;
|
|
|
|
for (i = 0; i < s->nb_inputs; i++) {
|
|
AVFilterLink *inlink = ctx->inputs[i];
|
|
|
|
in[i].time_base = inlink->time_base;
|
|
in[i].sync = 1;
|
|
in[i].before = EXT_STOP;
|
|
in[i].after = EXT_INFINITY;
|
|
}
|
|
|
|
return ff_framesync_configure(&s->fs);
|
|
}
|
|
|
|
static int request_frame(AVFilterLink *outlink)
|
|
{
|
|
StackContext *s = outlink->src->priv;
|
|
return ff_framesync_request_frame(&s->fs, outlink);
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
StackContext *s = ctx->priv;
|
|
ff_framesync_uninit(&s->fs);
|
|
av_freep(&s->frames);
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(StackContext, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
|
|
static const AVOption stack_options[] = {
|
|
{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVFilterPad outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
.request_frame = request_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
#if CONFIG_HSTACK_FILTER
|
|
|
|
#define hstack_options stack_options
|
|
AVFILTER_DEFINE_CLASS(hstack);
|
|
|
|
AVFilter ff_vf_hstack = {
|
|
.name = "hstack",
|
|
.description = NULL_IF_CONFIG_SMALL("Stack video inputs horizontally."),
|
|
.priv_size = sizeof(StackContext),
|
|
.priv_class = &hstack_class,
|
|
.query_formats = query_formats,
|
|
.outputs = outputs,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|
|
|
|
#endif /* CONFIG_HSTACK_FILTER */
|
|
|
|
#if CONFIG_VSTACK_FILTER
|
|
|
|
#define vstack_options stack_options
|
|
AVFILTER_DEFINE_CLASS(vstack);
|
|
|
|
AVFilter ff_vf_vstack = {
|
|
.name = "vstack",
|
|
.description = NULL_IF_CONFIG_SMALL("Stack video inputs vertically."),
|
|
.priv_size = sizeof(StackContext),
|
|
.priv_class = &vstack_class,
|
|
.query_formats = query_formats,
|
|
.outputs = outputs,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
|
|
};
|
|
|
|
#endif /* CONFIG_VSTACK_FILTER */
|