ffmpeg/libavdevice/decklink_common.h

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