FFmpeg: libavdevice/decklink_common.h Source File

FFmpeg
decklink_common.h
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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 #ifndef AVDEVICE_DECKLINK_COMMON_H
23 #define AVDEVICE_DECKLINK_COMMON_H
24 
25 #include <DeckLinkAPIVersion.h>
26 
27 #include "decklink_common_c.h"
28 
29 class decklink_output_callback;
30 class decklink_input_callback;
31 
32  typedef struct AVPacketQueue {
33   AVPacketList *first_pkt, *last_pkt;
34   int nb_packets;
35   unsigned long long size;
36   int abort_request;
37   pthread_mutex_t mutex;
38   pthread_cond_t cond;
39   AVFormatContext *avctx;
40 } AVPacketQueue;
41 
42  struct decklink_ctx {
43  /* DeckLink SDK interfaces */
44   IDeckLink *dl;
45   IDeckLinkOutput *dlo;
46   IDeckLinkInput *dli;
47   decklink_output_callback *output_callback;
48   decklink_input_callback *input_callback;
49 
50  /* DeckLink mode information */
51   BMDTimeValue bmd_tb_den;
52   BMDTimeValue bmd_tb_num;
53   BMDDisplayMode bmd_mode;
54   int bmd_width;
55   int bmd_height;
56   int bmd_field_dominance;
57 
58  /* Capture buffer queue */
59   AVPacketQueue queue;
60 
61  /* Streams present */
62   int audio;
63   int video;
64 
65  /* Status */
66   int playback_started;
67   int capture_started;
68   int64_t last_pts;
69   unsigned long frameCount;
70   unsigned int dropped;
71   AVStream *audio_st;
72   AVStream *video_st;
73   AVStream *teletext_st;
74 
75  /* Options */
76   int list_devices;
77   int list_formats;
78   int64_t teletext_lines;
79   double preroll;
80 
81   int frames_preroll;
82   int frames_buffer;
83 
84   sem_t semaphore;
85 
86   int channels;
87 };
88 
89  typedef enum { DIRECTION_IN, DIRECTION_OUT} decklink_direction_t;
90 
91 #ifdef _WIN32
92 #if BLACKMAGIC_DECKLINK_API_VERSION < 0x0a040000
93 typedef unsigned long buffercount_type;
94 #else
95 typedef unsigned int buffercount_type;
96 #endif
97 IDeckLinkIterator *CreateDeckLinkIteratorInstance(void);
98 #else
99  typedef uint32_t buffercount_type;
100 #endif
101 
102 
103 HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName);
104 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);
105 int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction, int num);
106 int ff_decklink_list_devices(AVFormatContext *avctx);
107 int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction = DIRECTION_OUT);
108 
109 #endif /* AVDEVICE_DECKLINK_COMMON_H */
AVPacketQueue::cond
pthread_cond_t cond
Definition: decklink_common.h:38
AVFormatContext
Format I/O context.
Definition: avformat.h:1314
pthread_mutex_t
HMTX pthread_mutex_t
Definition: os2threads.h:49
AVPacketQueue::mutex
pthread_mutex_t mutex
Definition: decklink_common.h:37
AVPacketQueue::last_pkt
AVPacketList * last_pkt
Definition: decklink_common.h:33
AVPacketQueue::first_pkt
AVPacketList * first_pkt
Definition: decklink_common.h:33
AVPacketQueue::size
unsigned long long size
Definition: decklink_common.h:35
AVStream
Stream structure.
Definition: avformat.h:877
height
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
AVPacketQueue::avctx
AVFormatContext * avctx
Definition: decklink_common.h:39
HRESULT
DWORD HRESULT
Definition: basicDataTypeConversions.h:54
width
static int width
Definition: demuxing_decoding.c:39

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