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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>
#include "libavutil/internal.h"
#include "libavutil/mem.h" |
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#include "avfilter.h" |
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#include "audio.h" |
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#include "internal.h" |
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#include "video.h" |
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|
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static int split_init(AVFilterContext *ctx, const char *args) |
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{
int i, nb_outputs = 2;
if (args) {
nb_outputs = strtol(args, NULL, 0);
if (nb_outputs <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
nb_outputs);
return AVERROR(EINVAL);
}
}
for (i = 0; i < nb_outputs; i++) {
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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pad.rej_perms = AV_PERM_WRITE; |
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|
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ff_insert_outpad(ctx, i, &pad); |
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}
return 0;
}
static void split_uninit(AVFilterContext *ctx)
{
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, AVFilterBufferRef *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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|
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for (i = 0; i < ctx->nb_outputs; i++) { |
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AVFilterBufferRef *buf_out;
if (ctx->outputs[i]->closed)
continue; |
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buf_out = avfilter_ref_buffer(frame, ~AV_PERM_WRITE);
if (!buf_out) {
ret = AVERROR(ENOMEM); |
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break; |
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} |
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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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avfilter_unref_bufferp(&frame); |
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return ret; |
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}
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static const AVFilterPad avfilter_vf_split_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = ff_null_get_video_buffer, |
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.filter_frame = filter_frame, |
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},
{ NULL }
};
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AVFilter avfilter_vf_split = { |
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.name = "split", |
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.description = NULL_IF_CONFIG_SMALL("Pass on the input video to N outputs."), |
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|
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.init = split_init,
.uninit = split_uninit,
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.inputs = avfilter_vf_split_inputs, |
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.outputs = NULL, |
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}; |
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|
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static const AVFilterPad avfilter_af_asplit_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer, |
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.filter_frame = filter_frame, |
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},
{ NULL }
};
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AVFilter avfilter_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."),
.init = split_init,
.uninit = split_uninit,
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.inputs = avfilter_af_asplit_inputs, |
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.outputs = NULL, |
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}; |