openshot-audio  0.1.7
juce_BufferingAudioSource.h
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1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2015 - ROLI Ltd.
6 
7  Permission is granted to use this software under the terms of either:
8  a) the GPL v2 (or any later version)
9  b) the Affero GPL v3
10 
11  Details of these licenses can be found at: www.gnu.org/licenses
12 
13  JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
14  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15  A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 
17  ------------------------------------------------------------------------------
18 
19  To release a closed-source product which uses JUCE, commercial licenses are
20  available: visit www.juce.com for more information.
21 
22  ==============================================================================
23 */
24 
25 #ifndef JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
26 #define JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
27 
28 
29 //==============================================================================
40  private TimeSliceClient
41 {
42 public:
43  //==============================================================================
57  TimeSliceThread& backgroundThread,
58  bool deleteSourceWhenDeleted,
59  int numberOfSamplesToBuffer,
60  int numberOfChannels = 2);
61 
68 
69  //==============================================================================
71  void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
72 
74  void releaseResources() override;
75 
77  void getNextAudioBlock (const AudioSourceChannelInfo&) override;
78 
79  //==============================================================================
81  void setNextReadPosition (int64 newPosition) override;
82 
84  int64 getNextReadPosition() const override;
85 
87  int64 getTotalLength() const override { return source->getTotalLength(); }
88 
90  bool isLooping() const override { return source->isLooping(); }
91 
92 private:
93  //==============================================================================
95  TimeSliceThread& backgroundThread;
96  int numberOfSamplesToBuffer, numberOfChannels;
98  CriticalSection bufferStartPosLock;
99  int64 volatile bufferValidStart, bufferValidEnd, nextPlayPos;
100  double volatile sampleRate;
101  bool wasSourceLooping, isPrepared;
102 
103  bool readNextBufferChunk();
104  void readBufferSection (int64 start, int length, int bufferOffset);
105  int useTimeSlice() override;
106 
108 };
109 
110 
111 #endif // JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
Definition: juce_AudioSampleBuffer.h:34
virtual int64 getNextReadPosition() const =0
bool isLooping() const override
Definition: juce_BufferingAudioSource.h:90
Definition: juce_TimeSliceThread.h:47
virtual bool isLooping() const =0
virtual int64 getTotalLength() const =0
virtual void releaseResources()=0
#define JUCE_API
Definition: juce_StandardHeader.h:139
JOCTET * buffer
Definition: juce_JPEGLoader.cpp:302
virtual void prepareToPlay(int samplesPerBlockExpected, double sampleRate)=0
Definition: juce_CriticalSection.h:47
Definition: juce_BufferingAudioSource.h:39
Definition: juce_AudioSource.h:33
virtual void setNextReadPosition(int64 newPosition)=0
png_uint_32 length
Definition: juce_PNGLoader.cpp:2078
long long int64
Definition: juce_MathsFunctions.h:60
virtual void getNextAudioBlock(const AudioSourceChannelInfo &bufferToFill)=0
#define JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(className)
Definition: juce_PlatformDefs.h:198
Definition: juce_TimeSliceThread.h:84
int64 getTotalLength() const override
Definition: juce_BufferingAudioSource.h:87
virtual int useTimeSlice()=0
Definition: juce_PositionableAudioSource.h:39