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  1. /*
  2.  * Blackmagic DeckLink common code
  3.  * Copyright (c) 2013-2014 Ramiro Polla, Luca Barbato, 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 <DeckLinkAPIVersion.h>
  23.  
  24. #include "decklink_common_c.h"
  25.  
  26. class decklink_output_callback;
  27. class decklink_input_callback;
  28.  
  29. typedef struct AVPacketQueue {
  30.     AVPacketList *first_pkt, *last_pkt;
  31.     int nb_packets;
  32.     unsigned long long size;
  33.     int abort_request;
  34.     pthread_mutex_t mutex;
  35.     pthread_cond_t cond;
  36.     AVFormatContext *avctx;
  37. } AVPacketQueue;
  38.  
  39. struct decklink_ctx {
  40.     /* DeckLink SDK interfaces */
  41.     IDeckLink *dl;
  42.     IDeckLinkOutput *dlo;
  43.     IDeckLinkInput *dli;
  44.     decklink_output_callback *output_callback;
  45.     decklink_input_callback *input_callback;
  46.  
  47.     /* DeckLink mode information */
  48.     BMDTimeValue bmd_tb_den;
  49.     BMDTimeValue bmd_tb_num;
  50.     BMDDisplayMode bmd_mode;
  51.     int bmd_width;
  52.     int bmd_height;
  53.     int bmd_field_dominance;
  54.  
  55.     /* Capture buffer queue */
  56.     AVPacketQueue queue;
  57.  
  58.     /* Streams present */
  59.     int audio;
  60.     int video;
  61.  
  62.     /* Status */
  63.     int playback_started;
  64.     int capture_started;
  65.     int64_t last_pts;
  66.     unsigned long frameCount;
  67.     unsigned int dropped;
  68.     AVStream *audio_st;
  69.     AVStream *video_st;
  70.  
  71.     /* Options */
  72.     int list_devices;
  73.     int list_formats;
  74.     double preroll;
  75.  
  76.     int frames_preroll;
  77.     int frames_buffer;
  78.  
  79.     sem_t semaphore;
  80.  
  81.     int channels;
  82. };
  83.  
  84. typedef enum { DIRECTION_IN, DIRECTION_OUT} decklink_direction_t;
  85.  
  86. #ifdef _WIN32
  87. #if BLACKMAGIC_DECKLINK_API_VERSION < 0x0a040000
  88. typedef unsigned long buffercount_type;
  89. #else
  90. typedef unsigned int buffercount_type;
  91. #endif
  92. IDeckLinkIterator *CreateDeckLinkIteratorInstance(void);
  93. #else
  94. typedef uint32_t buffercount_type;
  95. #endif
  96.  
  97.  
  98. HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName);
  99. int ff_decklink_set_format(AVFormatContext *avctx, int width, int height, int tb_num, int tb_den, decklink_direction_t direction = DIRECTION_OUT, int num = 0);
  100. int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction, int num);
  101. int ff_decklink_list_devices(AVFormatContext *avctx);
  102. int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction = DIRECTION_OUT);
  103.  
  104.