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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.     { NULL },
  35. };
  36.  
  37. static const AVClass decklink_muxer_class = {
  38.     .class_name = "Blackmagic DeckLink muxer",
  39.     .item_name  = av_default_item_name,
  40.     .option     = options,
  41.     .version    = LIBAVUTIL_VERSION_INT,
  42.     .category   = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
  43. };
  44.  
  45. AVOutputFormat ff_decklink_muxer = {
  46.     .name           = "decklink",
  47.     .long_name      = NULL_IF_CONFIG_SMALL("Blackmagic DeckLink output"),
  48.     .audio_codec    = AV_CODEC_ID_PCM_S16LE,
  49.     .video_codec    = AV_CODEC_ID_RAWVIDEO,
  50.     .subtitle_codec = AV_CODEC_ID_NONE,
  51.     .flags          = AVFMT_NOFILE | AVFMT_RAWPICTURE,
  52.     .priv_class     = &decklink_muxer_class,
  53.     .priv_data_size = sizeof(struct decklink_cctx),
  54.     .write_header   = ff_decklink_write_header,
  55.     .write_packet   = ff_decklink_write_packet,
  56.     .write_trailer  = ff_decklink_write_trailer,
  57. };
  58.