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/*
* Copyright (c) 2007 Bobby Bingham
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* audio and video splitter
*/
#include <stdio.h>
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "internal.h"
#include "video.h"
typedef struct SplitContext {
const AVClass *class;
int nb_outputs;
} SplitContext;
static int split_init(AVFilterContext *ctx)
{
SplitContext *s = ctx->priv;
int i;
for (i = 0; i < s->nb_outputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
ff_insert_outpad(ctx, i, &pad);
}
return 0;
}
static void split_uninit(AVFilterContext *ctx)
{
int i;
for (i = 0; i < ctx->nb_outputs; i++)
av_freep(&ctx->output_pads[i].name);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
int i, ret = 0;
for (i = 0; i < ctx->nb_outputs; i++) {
AVFrame *buf_out = av_frame_clone(frame);
if (!buf_out) {
ret = AVERROR(ENOMEM);
break;
}
ret = ff_filter_frame(ctx->outputs[i], buf_out);
if (ret < 0)
break;
}
av_frame_free(&frame);
return ret;
}
#define OFFSET(x) offsetof(SplitContext, x)
#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM
static const AVOption options[] = {
{ "outputs", "Number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS },
{ NULL },
};
static const AVClass split_class = {
.class_name = "split",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVClass asplit_class = {
.class_name = "asplit",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad avfilter_vf_split_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = ff_null_get_video_buffer,
.filter_frame = filter_frame,
},
{ NULL }
};
AVFilter avfilter_vf_split = {
.name = "split",
.description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
.priv_size = sizeof(SplitContext),
.priv_class = &split_class,
.init = split_init,
.uninit = split_uninit,
.inputs = avfilter_vf_split_inputs,
.outputs = NULL,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
};
static const AVFilterPad avfilter_af_asplit_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer,
.filter_frame = filter_frame,
},
{ NULL }
};
AVFilter avfilter_af_asplit = {
.name = "asplit",
.description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
.priv_size = sizeof(SplitContext),
.priv_class = &asplit_class,
.init = split_init,
.uninit = split_uninit,
.inputs = avfilter_af_asplit_inputs,
.outputs = NULL,
.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
};
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