FFmpeg
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_common_c.h"
26 #include "decklink_enc.h"
27 
28 #define OFFSET(x) offsetof(struct decklink_cctx, x)
29 #define ENC AV_OPT_FLAG_ENCODING_PARAM
30 static const AVOption options[] = {
31  { "list_devices", "list available devices" , OFFSET(list_devices), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, ENC },
32  { "list_formats", "list supported formats" , OFFSET(list_formats), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, ENC },
33  { "preroll" , "video preroll in seconds", OFFSET(preroll ), AV_OPT_TYPE_DOUBLE, { .dbl = 0.5 }, 0, 5, ENC },
34  { "duplex_mode" , "duplex mode" , OFFSET(duplex_mode ), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 2, ENC, "duplex_mode"},
35  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "duplex_mode"},
36  { "half" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "duplex_mode"},
37  { "full" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "duplex_mode"},
38  { "timing_offset", "genlock timing pixel offset", OFFSET(timing_offset), AV_OPT_TYPE_INT, { .i64 = INT_MIN }, INT_MIN, INT_MAX, ENC, "timing_offset"},
39  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST, { .i64 = INT_MIN }, 0, 0, ENC, "timing_offset"},
40  { NULL },
41 };
42 
43 static const AVClass decklink_muxer_class = {
44  .class_name = "Blackmagic DeckLink outdev",
45  .item_name = av_default_item_name,
46  .option = options,
47  .version = LIBAVUTIL_VERSION_INT,
49 };
50 
52  .name = "decklink",
53  .long_name = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
54  .audio_codec = AV_CODEC_ID_PCM_S16LE,
55  .video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
56  .subtitle_codec = AV_CODEC_ID_NONE,
57  .flags = AVFMT_NOFILE,
58  .get_device_list = ff_decklink_list_output_devices,
59  .priv_class = &decklink_muxer_class,
60  .priv_data_size = sizeof(struct decklink_cctx),
61  .write_header = ff_decklink_write_header,
62  .write_packet = ff_decklink_write_packet,
63  .write_trailer = ff_decklink_write_trailer,
64 };
#define NULL
Definition: coverity.c:32
AVOption.
Definition: opt.h:246
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
static void list_formats(AVFormatContext *ctx, int type)
Definition: v4l2.c:275
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AVOptions.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * name
Definition: avformat.h:500
Passthrough codec, AVFrames wrapped in AVPacket.
Definition: avcodec.h:726
Describe the class of an AVClass context structure.
Definition: log.h:67
Main libavformat public API header.
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:458