OpenShot Library | libopenshot 0.3.3
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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
94
96 void Reader(openshot::ReaderBase *reader);
97
99 std::shared_ptr<openshot::Frame> getFrame();
100
102 void Play();
103
105 void Seek(int64_t new_position);
106
108 void Stop();
109
111 void run();
112
114 void setSpeed(int new_speed) { if (source) source->setSpeed(new_speed); }
115
117 int getSpeed() const { if (source) return source->getSpeed(); else return 1; }
118
120 std::string getError()
121 {
123 }
124
126 double getDefaultSampleRate()
127 {
129 }
130
132 AudioDeviceInfo getCurrentAudioDevice()
133 {
135 }
136
138 AudioDeviceList getAudioDeviceNames()
139 {
140 AudioDevices devs;
141 return devs.getNames();
142 };
143
144 friend class PlayerPrivate;
145 friend class QtPlayer;
146};
147
148} // namespace openshot
149
150#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.
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,...
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
This struct hold information about Audio Devices.