FFmpeg
decklink_enc_c.c
Go to the documentation of this file.
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 "libavformat/mux.h"
24 #include "libavutil/opt.h"
25 
26 #include "decklink_common_c.h"
27 #include "decklink_enc.h"
28 
29 #define OFFSET(x) offsetof(struct decklink_cctx, x)
30 #define ENC AV_OPT_FLAG_ENCODING_PARAM
31 static const AVOption options[] = {
32  { "list_devices", "use ffmpeg -sinks decklink instead", OFFSET(list_devices), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC | AV_OPT_FLAG_DEPRECATED},
33  { "list_formats", "list supported formats" , OFFSET(list_formats), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 1, ENC },
34  { "preroll" , "video preroll in seconds", OFFSET(preroll ), AV_OPT_TYPE_DOUBLE, { .dbl = 0.5 }, 0, 5, ENC },
35  { "vanc_queue_size", "VANC queue buffer size", OFFSET(vanc_queue_size), AV_OPT_TYPE_INT64, { .i64 = (1024 * 1024)}, 0, INT64_MAX, ENC },
36 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
37  { "duplex_mode" , "duplex mode" , OFFSET(duplex_mode ), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 5, ENC, .unit = "duplex_mode"},
38 #else
39  { "duplex_mode" , "duplex mode" , OFFSET(duplex_mode ), AV_OPT_TYPE_INT , { .i64 = 0 }, 0, 2, ENC, .unit = "duplex_mode"},
40 #endif
41  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, .unit = "duplex_mode"},
42  { "half" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, .unit = "duplex_mode"},
43  { "full" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, .unit = "duplex_mode"},
44 #if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
45  { "one_sub_device_full", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, .unit = "duplex_mode"},
46  { "one_sub_device_half", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 3 }, 0, 0, ENC, .unit = "duplex_mode"},
47  { "two_sub_device_full", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 4 }, 0, 0, ENC, .unit = "duplex_mode"},
48  { "four_sub_device_half", NULL ,0 , AV_OPT_TYPE_CONST , { .i64 = 5 }, 0, 0, ENC, .unit = "duplex_mode"},
49 #endif
50  { "link" , "single/dual/quad SDI link configuration", OFFSET(link), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 3, ENC, .unit = "link"},
51  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, .unit = "link"},
52  { "single" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, .unit = "link"},
53  { "dual" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 2 }, 0, 0, ENC, .unit = "link"},
54  { "quad" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 3 }, 0, 0, ENC, .unit = "link"},
55  { "sqd" , "set Square Division" , OFFSET(sqd) , AV_OPT_TYPE_INT, { .i64 = -1 }, -1,1, ENC, .unit = "sqd"},
56  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, .unit = "sqd"},
57  { "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, .unit = "sqd"},
58  { "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, .unit = "sqd"},
59  { "level_a" , "set SMPTE LevelA" , OFFSET(level_a) , AV_OPT_TYPE_INT, { .i64 = -1 }, -1,1, ENC, .unit = "level_a"},
60  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = -1 }, 0, 0, ENC, .unit = "level_a"},
61  { "false" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 0 }, 0, 0, ENC, .unit = "level_a"},
62  { "true" , NULL , 0 , AV_OPT_TYPE_CONST , { .i64 = 1 }, 0, 0, ENC, .unit = "level_a"},
63  { "timing_offset", "genlock timing pixel offset", OFFSET(timing_offset), AV_OPT_TYPE_INT, { .i64 = INT_MIN }, INT_MIN, INT_MAX, ENC, .unit = "timing_offset"},
64  { "unset" , NULL , 0 , AV_OPT_TYPE_CONST, { .i64 = INT_MIN }, 0, 0, ENC, .unit = "timing_offset"},
65  { NULL },
66 };
67 
68 static const AVClass decklink_muxer_class = {
69  .class_name = "Blackmagic DeckLink outdev",
70  .item_name = av_default_item_name,
71  .option = options,
72  .version = LIBAVUTIL_VERSION_INT,
74 };
75 
77  .p.name = "decklink",
78  .p.long_name = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
79  .p.audio_codec = AV_CODEC_ID_PCM_S16LE,
80  .p.video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
81  .p.subtitle_codec = AV_CODEC_ID_EIA_608,
82  .p.flags = AVFMT_NOFILE,
83  .p.priv_class = &decklink_muxer_class,
84  .get_device_list = ff_decklink_list_output_devices,
85  .priv_data_size = sizeof(struct decklink_cctx),
87  .write_packet = ff_decklink_write_packet,
88  .write_trailer = ff_decklink_write_trailer,
89 };
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:334
AV_CODEC_ID_EIA_608
@ AV_CODEC_ID_EIA_608
Definition: codec_id.h:566
AVOutputFormat::name
const char * name
Definition: avformat.h:510
opt.h
AVOption
AVOption.
Definition: opt.h:429
FFOutputFormat::p
AVOutputFormat p
The public AVOutputFormat.
Definition: mux.h:65
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Underlying C type is double.
Definition: opt.h:267
AV_OPT_TYPE_INT64
@ AV_OPT_TYPE_INT64
Underlying C type is int64_t.
Definition: opt.h:263
AV_CODEC_ID_WRAPPED_AVFRAME
@ AV_CODEC_ID_WRAPPED_AVFRAME
Passthrough codec, AVFrames wrapped in AVPacket.
Definition: codec_id.h:608
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:75
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:237
AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT
@ AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT
Definition: log.h:40
options
Definition: swscale.c:42
FFOutputFormat
Definition: mux.h:61
list_formats
static void list_formats(AVFormatContext *ctx, int type)
Definition: v4l2.c:297
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:94
AVFMT_NOFILE
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:468
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:386
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:80
avformat.h
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Underlying C type is int.
Definition: opt.h:327
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:348
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
mux.h