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"
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);
55 pad.rej_perms = AV_PERM_WRITE;
57 ff_insert_outpad(ctx, i, &pad);
63 static void split_uninit(AVFilterContext *ctx)
67 for (i = 0; i < ctx->nb_outputs; i++)
68 av_freep(&ctx->output_pads[i].name);
71 static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *frame)
73 AVFilterContext *ctx = inlink->dst;
74 int i, ret = AVERROR_EOF;
76 for (i = 0; i < ctx->nb_outputs; i++) {
77 AVFilterBufferRef *buf_out;
79 if (ctx->outputs[i]->closed)
81 buf_out = avfilter_ref_buffer(frame, ~AV_PERM_WRITE);
83 ret = AVERROR(ENOMEM);
87 ret = ff_filter_frame(ctx->outputs[i], buf_out);
91 avfilter_unref_bufferp(&frame);
95 static const AVFilterPad avfilter_vf_split_inputs[] = {
98 .type = AVMEDIA_TYPE_VIDEO,
99 .get_video_buffer = ff_null_get_video_buffer,
100 .filter_frame = filter_frame,
105 AVFilter avfilter_vf_split = {
107 .description = NULL_IF_CONFIG_SMALL("Pass on the input video to N outputs."),
110 .uninit = split_uninit,
112 .inputs = avfilter_vf_split_inputs,
116 static const AVFilterPad avfilter_af_asplit_inputs[] = {
119 .type = AVMEDIA_TYPE_AUDIO,
120 .get_audio_buffer = ff_null_get_audio_buffer,
121 .filter_frame = filter_frame,
126 AVFilter avfilter_af_asplit = {
128 .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
131 .uninit = split_uninit,
133 .inputs = avfilter_af_asplit_inputs,