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/internal.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/opt.h"
38 typedef struct SplitContext
{
43 static av_cold
int split_init(AVFilterContext
*ctx
)
45 SplitContext
*s
= ctx
->priv
;
48 for (i
= 0; i
< s
->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 return AVERROR(ENOMEM
);
58 ff_insert_outpad(ctx
, i
, &pad
);
64 static av_cold
void split_uninit(AVFilterContext
*ctx
)
68 for (i
= 0; i
< ctx
->nb_outputs
; i
++)
69 av_freep(&ctx
->output_pads
[i
].name
);
72 static int filter_frame(AVFilterLink
*inlink
, AVFrame
*frame
)
74 AVFilterContext
*ctx
= inlink
->dst
;
75 int i
, ret
= AVERROR_EOF
;
77 for (i
= 0; i
< ctx
->nb_outputs
; i
++) {
80 if (ctx
->outputs
[i
]->closed
)
82 buf_out
= av_frame_clone(frame
);
84 ret
= AVERROR(ENOMEM
);
88 ret
= ff_filter_frame(ctx
->outputs
[i
], buf_out
);
92 av_frame_free(&frame
);
96 #define OFFSET(x) offsetof(SplitContext, x)
97 #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM
98 static const AVOption options
[] = {
99 { "outputs", "set number of outputs", OFFSET(nb_outputs
), AV_OPT_TYPE_INT
, { .i64
= 2 }, 1, INT_MAX
, FLAGS
},
103 #define split_options options
104 AVFILTER_DEFINE_CLASS(split
);
106 #define asplit_options options
107 AVFILTER_DEFINE_CLASS(asplit
);
109 static const AVFilterPad avfilter_vf_split_inputs
[] = {
112 .type
= AVMEDIA_TYPE_VIDEO
,
113 .filter_frame
= filter_frame
,
118 AVFilter ff_vf_split
= {
120 .description
= NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."),
121 .priv_size
= sizeof(SplitContext
),
122 .priv_class
= &split_class
,
124 .uninit
= split_uninit
,
125 .inputs
= avfilter_vf_split_inputs
,
127 .flags
= AVFILTER_FLAG_DYNAMIC_OUTPUTS
,
130 static const AVFilterPad avfilter_af_asplit_inputs
[] = {
133 .type
= AVMEDIA_TYPE_AUDIO
,
134 .filter_frame
= filter_frame
,
139 AVFilter ff_af_asplit
= {
141 .description
= NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
142 .priv_size
= sizeof(SplitContext
),
143 .priv_class
= &asplit_class
,
145 .uninit
= split_uninit
,
146 .inputs
= avfilter_af_asplit_inputs
,
148 .flags
= AVFILTER_FLAG_DYNAMIC_OUTPUTS
,