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/* |
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* Copyright (c) 2007 Bobby Bingham |
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*
* 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
*/
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/**
* @file |
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* audio and video splitter |
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*/
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#include <stdio.h>
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#include "libavutil/attributes.h" |
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#include "libavutil/internal.h"
#include "libavutil/mem.h" |
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#include "libavutil/opt.h"
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#define FF_INTERNAL_FIELDS 1
#include "framequeue.h"
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#include "avfilter.h" |
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#include "audio.h" |
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#include "formats.h" |
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#include "internal.h" |
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#include "video.h" |
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typedef struct SplitContext {
const AVClass *class;
int nb_outputs;
} SplitContext;
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static av_cold int split_init(AVFilterContext *ctx) |
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{ |
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SplitContext *s = ctx->priv; |
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int i, ret; |
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for (i = 0; i < s->nb_outputs; i++) { |
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char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i); |
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pad.type = ctx->filter->inputs[0].type; |
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pad.name = av_strdup(name); |
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if (!pad.name)
return AVERROR(ENOMEM); |
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|
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if ((ret = ff_insert_outpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
} |
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}
return 0;
}
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static av_cold void split_uninit(AVFilterContext *ctx) |
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{
int i;
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for (i = 0; i < ctx->nb_outputs; i++) |
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av_freep(&ctx->output_pads[i].name);
}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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int i, ret = AVERROR_EOF; |
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for (i = 0; i < ctx->nb_outputs; i++) { |
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AVFrame *buf_out; |
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if (ctx->outputs[i]->status_in) |
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continue; |
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buf_out = av_frame_clone(frame); |
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if (!buf_out) {
ret = AVERROR(ENOMEM); |
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break; |
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} |
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ret = ff_filter_frame(ctx->outputs[i], buf_out); |
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if (ret < 0)
break;
} |
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av_frame_free(&frame); |
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return ret; |
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}
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#define OFFSET(x) offsetof(SplitContext, x) |
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#define FLAGS (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM) |
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static const AVOption options[] = { |
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{ "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS }, |
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{ NULL } |
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};
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#define split_options options
AVFILTER_DEFINE_CLASS(split); |
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#define asplit_options options
AVFILTER_DEFINE_CLASS(asplit); |
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static const AVFilterPad avfilter_vf_split_inputs[] = {
{ |
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.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame, |
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},
{ NULL }
};
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AVFilter ff_vf_split = { |
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.name = "split", |
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.description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."), |
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.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, |
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}; |
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static const AVFilterPad avfilter_af_asplit_inputs[] = {
{ |
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.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame, |
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},
{ NULL }
};
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AVFilter ff_af_asplit = { |
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.name = "asplit", |
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.description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."), |
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.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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}; |