OpenShot Library | libopenshot 0.4.0
AudioPlaybackThread.h
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1
10// Copyright (c) 2008-2019 OpenShot Studios, LLC
11//
12// SPDX-License-Identifier: LGPL-3.0-or-later
13
14#ifndef OPENSHOT_AUDIO_PLAYBACK_THREAD_H
15#define OPENSHOT_AUDIO_PLAYBACK_THREAD_H
16
17#include "ReaderBase.h"
18#include "RendererBase.h"
19#include "AudioReaderSource.h"
20#include "AudioDevices.h"
21#include "AudioReaderSource.h"
22#include "Qt/VideoCacheThread.h"
23
24#include <OpenShotAudio.h>
25#include <AppConfig.h>
26#include <juce_audio_basics/juce_audio_basics.h>
27#include <juce_audio_devices/juce_audio_devices.h>
28
29namespace openshot
30{
31
32// Forward decls
33class ReaderBase;
34class Frame;
35class PlayerPrivate;
36class QtPlayer;
37
38
43private:
46
48 static AudioDeviceManagerSingleton* m_pInstance;
49
50public:
52 std::string initialise_error;
53
56
59
62
65 static AudioDeviceManagerSingleton* Instance(int rate, int channels);
66
68 juce::AudioDeviceManager audioDeviceManager;
69
71 void CloseAudioDevice();
72 };
73
77 class AudioPlaybackThread : juce::Thread
78 {
79 juce::AudioSourcePlayer player;
80 juce::AudioTransportSource transport;
81 juce::MixerAudioSource mixer;
82 AudioReaderSource *source;
83 double sampleRate;
84 int numChannels;
85 juce::WaitableEvent play;
86 bool is_playing;
87 juce::TimeSliceThread time_thread;
88 openshot::VideoCacheThread *videoCache;
89 std::mutex transportMutex;
90 std::condition_variable transportCondition;
91
96
98 void NotifyTransportStateChanged();
99
101 void Reader(openshot::ReaderBase *reader);
102
104 std::shared_ptr<openshot::Frame> getFrame();
105
107 void Play();
108
110 void Seek(int64_t new_position);
111
113 void Stop();
114
116 void run();
117
119 void setSpeed(int new_speed) { if (source) source->setSpeed(new_speed); }
120
122 int getSpeed() const { if (source) return source->getSpeed(); else return 1; }
123
125 std::string getError()
126 {
128 }
129
131 double getDefaultSampleRate()
132 {
134 }
135
137 AudioDeviceInfo getCurrentAudioDevice()
138 {
140 }
141
143 AudioDeviceList getAudioDeviceNames()
144 {
145 AudioDevices devs;
146 return devs.getNames();
147 };
148
149 friend class PlayerPrivate;
150 friend class QtPlayer;
151};
152
153} // namespace openshot
154
155#endif // OPENSHOT_AUDIO_PLAYBACK_THREAD_H
Header file for Audio Device Info struct.
Header file for AudioReaderSource class.
Header file for ReaderBase class.
Header file for RendererBase class.
Source file for VideoCacheThread class.
Singleton wrapper for AudioDeviceManager (to prevent multiple instances).
double defaultSampleRate
Default sample rate (as detected)
static AudioDeviceManagerSingleton * Instance()
Override with default sample rate & channels (44100, 2) and no preferred audio device.
juce::AudioDeviceManager audioDeviceManager
Public device manager property.
AudioDeviceInfo currentAudioDevice
Current open audio device (or last attempted device - if none were successful)
std::string initialise_error
Error found during JUCE initialise method.
A class which probes the available audio devices.
Definition: AudioDevices.h:46
AudioDeviceList getNames()
The audio playback thread.
This class is used to expose any ReaderBase derived class as an AudioSource in JUCE.
int getSpeed() const
Get Speed (The speed and direction to playback a reader (1=normal, 2=fast, 3=faster,...
void setSpeed(int new_speed)
Set Speed (The speed and direction to playback a reader (1=normal, 2=fast, 3=faster,...
The private part of QtPlayer class, which contains an audio thread and video thread,...
Definition: PlayerPrivate.h:31
This class is used to playback a video from a reader.
Definition: QtPlayer.h:33
This abstract class is the base class, used by all readers in libopenshot.
Definition: ReaderBase.h:76
The video cache class.
This namespace is the default namespace for all code in the openshot library.
Definition: Compressor.h:29
std::vector< std::pair< std::string, std::string > > AudioDeviceList
Definition: AudioDevices.h:42
This struct hold information about Audio Devices.
Definition: AudioDevices.h:27