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/attributes.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/opt.h"
41 typedef struct SplitContext {
46 static av_cold int split_init(AVFilterContext *ctx)
48 SplitContext *s = ctx->priv;
51 for (i = 0; i < s->nb_outputs; i++) {
52 AVFilterPad pad = { 0 };
54 pad.type = ctx->filter->inputs[0].type;
55 pad.name = av_asprintf("output%d", i);
57 return AVERROR(ENOMEM);
59 if ((ret = ff_insert_outpad(ctx, i, &pad)) < 0) {
68 static av_cold void split_uninit(AVFilterContext *ctx)
72 for (i = 0; i < ctx->nb_outputs; i++)
73 av_freep(&ctx->output_pads[i].name);
76 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
78 AVFilterContext *ctx = inlink->dst;
79 int i, ret = AVERROR_EOF;
81 for (i = 0; i < ctx->nb_outputs; i++) {
84 if (ff_outlink_get_status(ctx->outputs[i]))
86 buf_out = av_frame_clone(frame);
88 ret = AVERROR(ENOMEM);
92 ret = ff_filter_frame(ctx->outputs[i], buf_out);
96 av_frame_free(&frame);
100 #define OFFSET(x) offsetof(SplitContext, x)
101 #define FLAGS (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
102 static const AVOption options[] = {
103 { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS },
107 #define split_options options
108 AVFILTER_DEFINE_CLASS(split);
110 #define asplit_options options
111 AVFILTER_DEFINE_CLASS(asplit);
113 static const AVFilterPad avfilter_vf_split_inputs[] = {
116 .type = AVMEDIA_TYPE_VIDEO,
117 .filter_frame = filter_frame,
122 AVFilter ff_vf_split = {
124 .description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."),
125 .priv_size = sizeof(SplitContext),
126 .priv_class = &split_class,
128 .uninit = split_uninit,
129 .inputs = avfilter_vf_split_inputs,
131 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
134 static const AVFilterPad avfilter_af_asplit_inputs[] = {
137 .type = AVMEDIA_TYPE_AUDIO,
138 .filter_frame = filter_frame,
143 AVFilter ff_af_asplit = {
145 .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
146 .priv_size = sizeof(SplitContext),
147 .priv_class = &asplit_class,
149 .uninit = split_uninit,
150 .inputs = avfilter_af_asplit_inputs,
152 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,