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decklink_enc_c.c
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1 /*
2  * Blackmagic DeckLink output
3  * Copyright (c) 2013-2014 Ramiro Polla
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavformat/avformat.h"
23 #include "libavutil/opt.h"
24 
25 #include "decklink_enc.h"
26 
27 #define OFFSET(x) offsetof(struct decklink_cctx, x)
28 #define ENC AV_OPT_FLAG_ENCODING_PARAM
29 static const AVOption options[] = {
30  { "list_devices", "list available devices" , OFFSET(list_devices), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, ENC },
31  { "list_formats", "list supported formats" , OFFSET(list_formats), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, ENC },
32  { "preroll" , "video preroll in seconds", OFFSET(preroll ), AV_OPT_TYPE_DOUBLE, { .dbl = 0.5 }, 0, 5, ENC },
33  { NULL },
34 };
35 
36 static const AVClass decklink_muxer_class = {
37  .class_name = "Blackmagic DeckLink muxer",
38  .item_name = av_default_item_name,
39  .option = options,
40  .version = LIBAVUTIL_VERSION_INT,
42 };
43 
45  .name = "decklink",
46  .long_name = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
47  .audio_codec = AV_CODEC_ID_PCM_S16LE,
48  .video_codec = AV_CODEC_ID_RAWVIDEO,
49  .subtitle_codec = AV_CODEC_ID_NONE,
50  .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
51  .priv_class = &decklink_muxer_class,
52  .priv_data_size = sizeof(struct decklink_cctx),
53  .write_header = ff_decklink_write_header,
54  .write_packet = ff_decklink_write_packet,
55  .write_trailer = ff_decklink_write_trailer,
56 };