2 * Copyright (c) 2007 Bobby Bingham
4 * This file is part of Libav.
6 * Libav 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 * Libav 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 Libav; 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"
35 static int split_init(AVFilterContext *ctx, const char *args)
37 int i, nb_outputs = 2;
40 nb_outputs = strtol(args, NULL, 0);
41 if (nb_outputs <= 0) {
42 av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
44 return AVERROR(EINVAL);
48 for (i = 0; i < nb_outputs; i++) {
50 AVFilterPad pad = { 0 };
52 snprintf(name, sizeof(name), "output%d", i);
53 pad.type = ctx->filter->inputs[0].type;
54 pad.name = av_strdup(name);
56 ff_insert_outpad(ctx, i, &pad);
62 static void split_uninit(AVFilterContext *ctx)
66 for (i = 0; i < ctx->nb_outputs; i++)
67 av_freep(&ctx->output_pads[i].name);
70 static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *frame)
72 AVFilterContext *ctx = inlink->dst;
75 for (i = 0; i < ctx->nb_outputs; i++) {
76 AVFilterBufferRef *buf_out = avfilter_ref_buffer(frame, ~AV_PERM_WRITE);
78 ret = AVERROR(ENOMEM);
82 ret = ff_filter_frame(ctx->outputs[i], buf_out);
86 avfilter_unref_bufferp(&frame);
90 static const AVFilterPad avfilter_vf_split_inputs[] = {
93 .type = AVMEDIA_TYPE_VIDEO,
94 .get_video_buffer = ff_null_get_video_buffer,
95 .filter_frame = filter_frame,
100 AVFilter avfilter_vf_split = {
102 .description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
105 .uninit = split_uninit,
107 .inputs = avfilter_vf_split_inputs,
111 static const AVFilterPad avfilter_af_asplit_inputs[] = {
114 .type = AVMEDIA_TYPE_AUDIO,
115 .get_audio_buffer = ff_null_get_audio_buffer,
116 .filter_frame = filter_frame,
121 AVFilter avfilter_af_asplit = {
123 .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
126 .uninit = split_uninit,
128 .inputs = avfilter_af_asplit_inputs,