2 * Copyright (c) 2007 Bobby Bingham
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * audio and video splitter
28 #include "libavutil/internal.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/opt.h"
37 typedef struct SplitContext {
42 static int split_init(AVFilterContext *ctx)
44 SplitContext *s = ctx->priv;
47 for (i = 0; i < s->nb_outputs; i++) {
49 AVFilterPad pad = { 0 };
51 snprintf(name, sizeof(name), "output%d", i);
52 pad.type = ctx->filter->inputs[0].type;
53 pad.name = av_strdup(name);
55 ff_insert_outpad(ctx, i, &pad);
61 static void split_uninit(AVFilterContext *ctx)
65 for (i = 0; i < ctx->nb_outputs; i++)
66 av_freep(&ctx->output_pads[i].name);
69 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
71 AVFilterContext *ctx = inlink->dst;
72 int i, ret = AVERROR_EOF;
74 for (i = 0; i < ctx->nb_outputs; i++) {
77 if (ctx->outputs[i]->closed)
79 buf_out = av_frame_clone(frame);
81 ret = AVERROR(ENOMEM);
85 ret = ff_filter_frame(ctx->outputs[i], buf_out);
89 av_frame_free(&frame);
93 #define OFFSET(x) offsetof(SplitContext, x)
94 #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM
95 static const AVOption options[] = {
96 { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS },
100 #define split_options options
101 AVFILTER_DEFINE_CLASS(split);
103 #define asplit_options options
104 AVFILTER_DEFINE_CLASS(asplit);
106 static const AVFilterPad avfilter_vf_split_inputs[] = {
109 .type = AVMEDIA_TYPE_VIDEO,
110 .get_video_buffer = ff_null_get_video_buffer,
111 .filter_frame = filter_frame,
116 AVFilter avfilter_vf_split = {
118 .description = NULL_IF_CONFIG_SMALL("Pass on the input video to N outputs."),
120 .priv_size = sizeof(SplitContext),
121 .priv_class = &split_class,
124 .uninit = split_uninit,
126 .inputs = avfilter_vf_split_inputs,
129 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
132 static const AVFilterPad avfilter_af_asplit_inputs[] = {
135 .type = AVMEDIA_TYPE_AUDIO,
136 .get_audio_buffer = ff_null_get_audio_buffer,
137 .filter_frame = filter_frame,
142 AVFilter avfilter_af_asplit = {
144 .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
146 .priv_size = sizeof(SplitContext),
147 .priv_class = &asplit_class,
150 .uninit = split_uninit,
152 .inputs = avfilter_af_asplit_inputs,
155 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,