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decklink_dec_c.c
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1 /*
2  * Blackmagic DeckLink output
3  * Copyright (c) 2014 Deti Fliegl
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_dec.h"
27 
28 #define OFFSET(x) offsetof(struct decklink_cctx, x)
29 #define DEC AV_OPT_FLAG_DECODING_PARAM
30 
31 static const AVOption options[] = {
32  { "list_devices", "list available devices" , OFFSET(list_devices), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
33  { "list_formats", "list supported formats" , OFFSET(list_formats), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
34  { "bm_v210", "v210 10 bit per channel" , OFFSET(v210), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, DEC },
35  { "teletext_lines", "teletext lines bitmask", OFFSET(teletext_lines), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, 0x7ffffffffLL, DEC, "teletext_lines"},
36  { "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0x7fff9fffeLL}, 0, 0, DEC, "teletext_lines"},
37  { "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0x7ffffffffLL}, 0, 0, DEC, "teletext_lines"},
38  { "channels", "number of audio channels", OFFSET(audio_channels), AV_OPT_TYPE_INT , { .i64 = 2 }, 2, 16, DEC },
39  { NULL },
40 };
41 
43  .class_name = "Blackmagic DeckLink demuxer",
44  .item_name = av_default_item_name,
45  .option = options,
46  .version = LIBAVUTIL_VERSION_INT,
48 };
49 
51  .name = "decklink",
52  .long_name = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink input"),
53  .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
54  .priv_class = &decklink_demuxer_class,
55  .priv_data_size = sizeof(struct decklink_cctx),
56  .read_header = ff_decklink_read_header,
57  .read_packet = ff_decklink_read_packet,
58  .read_close = ff_decklink_read_close,
59 };
#define NULL
Definition: coverity.c:32
AVOption.
Definition: opt.h:245
int audio_channels
Definition: rtp.c:40
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
static void list_formats(AVFormatContext *ctx, int type)
Definition: v4l2.c:269
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.
av_default_item_name
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
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:477
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:661