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", "use ffmpeg -sinks decklink instead", OFFSET(list_devices), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC | AV_OPT_FLAG_DEPRECATED},
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 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
35  { "duplex_mode" , "duplex mode" , OFFSET(duplex_mode ), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 5, ENC, "duplex_mode"},
36 #else
37  { "duplex_mode" , "duplex mode" , OFFSET(duplex_mode ), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 2, ENC, "duplex_mode"},
38 #endif
39  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "duplex_mode"},
40  { "half" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "duplex_mode"},
41  { "full" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "duplex_mode"},
42 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
43  { "one_sub_device_full", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "duplex_mode"},
44  { "one_sub_device_half", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 3 }, 0, 0, ENC, "duplex_mode"},
45  { "two_sub_device_full", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 4 }, 0, 0, ENC, "duplex_mode"},
46  { "four_sub_device_half", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 5 }, 0, 0, ENC, "duplex_mode"},
47 #endif
48  { "link" , "single/dual/quad SDI link configuration", OFFSET(link), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 3, ENC, "link"},
49  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "link"},
50  { "single" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "link"},
51  { "dual" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, "link"},
52  { "quad" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 3 }, 0, 0, ENC, "link"},
53  { "sqd" , "set Square Division" , OFFSET(sqd) , AV_OPT_TYPE_INT, { .i64 = -1 }, -1,1, ENC, "sqd"},
54  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, "sqd"},
55  { "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "sqd"},
56  { "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "sqd"},
57  { "level_a" , "set SMPTE LevelA" , OFFSET(level_a) , AV_OPT_TYPE_INT, { .i64 = -1 }, -1,1, ENC, "level_a"},
58  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, "level_a"},
59  { "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, "level_a"},
60  { "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, "level_a"},
61  { "timing_offset", "genlock timing pixel offset", OFFSET(timing_offset), AV_OPT_TYPE_INT, { .i64 = INT_MIN }, INT_MIN, INT_MAX, ENC, "timing_offset"},
62  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST, { .i64 = INT_MIN }, 0, 0, ENC, "timing_offset"},
63  { NULL },
64 };
65 
66 static const AVClass decklink_muxer_class = {
67  .class_name = "Blackmagic DeckLink outdev",
68  .item_name = av_default_item_name,
69  .option = options,
70  .version = LIBAVUTIL_VERSION_INT,
72 };
73 
75  .name = "decklink",
76  .long_name = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
77  .audio_codec = AV_CODEC_ID_PCM_S16LE,
78  .video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
79  .subtitle_codec = AV_CODEC_ID_NONE,
80  .flags = AVFMT_NOFILE,
81  .get_device_list = ff_decklink_list_output_devices,
82  .priv_class = &decklink_muxer_class,
83  .priv_data_size = sizeof(struct decklink_cctx),
85  .write_packet = ff_decklink_write_packet,
86  .write_trailer = ff_decklink_write_trailer,
87 };
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:314
AVOutputFormat::name
const char * name
Definition: avformat.h:496
opt.h
AVOption
AVOption.
Definition: opt.h:247
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
AV_CODEC_ID_WRAPPED_AVFRAME
@ AV_CODEC_ID_WRAPPED_AVFRAME
Passthrough codec, AVFrames wrapped in AVPacket.
Definition: codec_id.h:572
link
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a link
Definition: filter_design.txt:23
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT
@ AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT
Definition: log.h:40
list_formats
static void list_formats(AVFormatContext *ctx, int type)
Definition: v4l2.c:277
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AVFMT_NOFILE
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:463
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:48
AVOutputFormat
Definition: avformat.h:495
AVClass::class_name
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:71
avformat.h
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:347
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
AV_OPT_FLAG_DEPRECATED
#define AV_OPT_FLAG_DEPRECATED
set if option is deprecated, users should refer to AVOption.help text for more information
Definition: opt.h:294