0,0 → 1,147 |
/* |
* Copyright (c) 2007 Bobby Bingham |
* |
* 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 |
* audio and video splitter |
*/ |
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#include <stdio.h> |
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#include "libavutil/attributes.h" |
#include "libavutil/internal.h" |
#include "libavutil/mem.h" |
#include "libavutil/opt.h" |
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#include "avfilter.h" |
#include "audio.h" |
#include "internal.h" |
#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) |
{ |
SplitContext *s = ctx->priv; |
int i; |
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for (i = 0; i < s->nb_outputs; i++) { |
char name[32]; |
AVFilterPad pad = { 0 }; |
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snprintf(name, sizeof(name), "output%d", i); |
pad.type = ctx->filter->inputs[0].type; |
pad.name = av_strdup(name); |
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ff_insert_outpad(ctx, i, &pad); |
} |
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return 0; |
} |
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static av_cold void split_uninit(AVFilterContext *ctx) |
{ |
int i; |
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for (i = 0; i < ctx->nb_outputs; i++) |
av_freep(&ctx->output_pads[i].name); |
} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
{ |
AVFilterContext *ctx = inlink->dst; |
int i, ret = AVERROR_EOF; |
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for (i = 0; i < ctx->nb_outputs; i++) { |
AVFrame *buf_out; |
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if (ctx->outputs[i]->closed) |
continue; |
buf_out = av_frame_clone(frame); |
if (!buf_out) { |
ret = AVERROR(ENOMEM); |
break; |
} |
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ret = ff_filter_frame(ctx->outputs[i], buf_out); |
if (ret < 0) |
break; |
} |
av_frame_free(&frame); |
return ret; |
} |
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#define OFFSET(x) offsetof(SplitContext, x) |
#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
static const AVOption options[] = { |
{ "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS }, |
{ NULL } |
}; |
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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[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_VIDEO, |
.filter_frame = filter_frame, |
}, |
{ NULL } |
}; |
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AVFilter avfilter_vf_split = { |
.name = "split", |
.description = NULL_IF_CONFIG_SMALL("Pass on the input to N video 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, |
}; |
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static const AVFilterPad avfilter_af_asplit_inputs[] = { |
{ |
.name = "default", |
.type = AVMEDIA_TYPE_AUDIO, |
.filter_frame = filter_frame, |
}, |
{ NULL } |
}; |
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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, |
}; |