OpenShot Library | libopenshot  0.2.2
DecklinkWriter.h
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1 /**
2  * @file
3  * @brief Header file for DecklinkWriter class
4  * @author Jonathan Thomas <jonathan@openshot.org>
5  *
6  * @section LICENSE
7  *
8  * Copyright (c) 2008-2014 OpenShot Studios, LLC
9  * <http://www.openshotstudios.com/>. This file is part of
10  * OpenShot Library (libopenshot), an open-source project dedicated to
11  * delivering high quality video editing and animation solutions to the
12  * world. For more information visit <http://www.openshot.org/>.
13  *
14  * OpenShot Library (libopenshot) is free software: you can redistribute it
15  * and/or modify it under the terms of the GNU Lesser General Public License
16  * as published by the Free Software Foundation, either version 3 of the
17  * License, or (at your option) any later version.
18  *
19  * OpenShot Library (libopenshot) is distributed in the hope that it will be
20  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22  * GNU Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public License
25  * along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
26  */
27 
28 #ifndef OPENSHOT_DECKLINK_WRITER_H
29 #define OPENSHOT_DECKLINK_WRITER_H
30 
31 #include "WriterBase.h"
32 
33 #include <cmath>
34 #include <ctime>
35 #include <fcntl.h>
36 #include <iostream>
37 #include <omp.h>
38 #include <pthread.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <memory>
43 #include <unistd.h>
44 
45 #include "CacheMemory.h"
46 #include "Exceptions.h"
47 #include "Frame.h"
48 #include "DecklinkOutput.h"
49 
50 using namespace std;
51 
52 namespace openshot
53 {
54 
55  /**
56  * @brief This class uses the Blackmagic Decklink libraries, to send video streams to Blackmagic devices.
57  *
58  * This requires special hardware manufactured by <a href="http://www.blackmagicdesign.com/products">Blackmagic Designs</a>.
59  * Once the device is acquired and connected, this reader returns openshot::Frame objects containing the image and audio data.
60  */
61  class DecklinkWriter : public WriterBase
62  {
63  private:
64  bool is_open;
65 
66  IDeckLink *deckLink;
67  IDeckLinkDisplayModeIterator *displayModeIterator;
68  IDeckLinkOutput *deckLinkOutput;
69  IDeckLinkVideoConversion *m_deckLinkConverter;
70  pthread_mutex_t sleepMutex;
71  pthread_cond_t sleepCond;
72  IDeckLinkIterator *deckLinkIterator;
73  DeckLinkOutputDelegate *delegate;
74  IDeckLinkDisplayMode *displayMode;
75  BMDVideoInputFlags inputFlags;
76  BMDDisplayMode selectedDisplayMode;
77  BMDPixelFormat pixelFormat;
78  int displayModeCount;
79  int exitStatus;
80  int ch;
81  bool foundDisplayMode;
82  HRESULT result;
83  int g_videoModeIndex;
84  int g_audioChannels;
85  int g_audioSampleDepth;
86  int g_maxFrames;
87  int device;
88 
89  public:
90 
91  /// Constructor for DecklinkWriter. This automatically opens the device or it
92  /// throws one of the following exceptions.
93  DecklinkWriter(int device, int video_mode, int pixel_format, int channels, int sample_depth);
94 
95  /// Close the device and video stream
96  void Close();
97 
98  /// This method is required for all derived classes of WriterBase. Write a Frame to the video file.
99  void WriteFrame(std::shared_ptr<Frame> frame);
100 
101  /// This method is required for all derived classes of WriterBase. Write a block of frames from a reader.
102  void WriteFrame(ReaderBase* reader, int start, int length);
103 
104  /// Open device and video stream - which is called by the constructor automatically
105  void Open();
106 
107  /// Determine if writer is open or closed
108  bool IsOpen() { return is_open; };
109 
110 
111  };
112 
113 }
114 
115 #endif
WriterBase.h
Header file for WriterBase class.
openshot
This namespace is the default namespace for all code in the openshot library.
Definition: AudioBufferSource.h:45
openshot::DecklinkWriter
This class uses the Blackmagic Decklink libraries, to send video streams to Blackmagic devices.
Definition: DecklinkWriter.h:61
openshot::DecklinkWriter::IsOpen
bool IsOpen()
Determine if writer is open or closed.
Definition: DecklinkWriter.h:108
CacheMemory.h
Header file for CacheMemory class.
Frame.h
Header file for Frame class.
openshot::ReaderBase
This abstract class is the base class, used by all readers in libopenshot.
Definition: ReaderBase.h:96
DecklinkOutput.h
Header file for DecklinkOutput class.
DeckLinkOutputDelegate
Implementation of the Blackmagic Decklink API (used by the DecklinkWriter)
Definition: DecklinkOutput.h:75
Exceptions.h
Header file for all Exception classes.
openshot::WriterBase
This abstract class is the base class, used by writers. Writers are types of classes that encode vide...
Definition: WriterBase.h:86