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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 */ | 27 */ |
28 | 28 |
29 #ifndef AudioBuffer_h | 29 #ifndef AudioBuffer_h |
30 #define AudioBuffer_h | 30 #define AudioBuffer_h |
31 | 31 |
32 #include "bindings/core/v8/ScriptWrappable.h" | 32 #include "bindings/core/v8/ScriptWrappable.h" |
33 #include "wtf/Float32Array.h" | 33 #include "wtf/Float32Array.h" |
34 #include "wtf/PassRefPtr.h" | 34 #include "wtf/PassRefPtr.h" |
35 #include "wtf/RefCounted.h" | |
36 #include "wtf/RefPtr.h" | 35 #include "wtf/RefPtr.h" |
37 #include "wtf/Vector.h" | 36 #include "wtf/Vector.h" |
38 | 37 |
39 namespace blink { | 38 namespace blink { |
40 | 39 |
41 class AudioBus; | 40 class AudioBus; |
42 class ExceptionState; | 41 class ExceptionState; |
43 | 42 |
44 class AudioBuffer : public RefCountedWillBeGarbageCollectedFinalized<AudioBuffer
>, public ScriptWrappable { | 43 class AudioBuffer : public GarbageCollectedFinalized<AudioBuffer>, public Script
Wrappable { |
45 public: | 44 public: |
46 static PassRefPtrWillBeRawPtr<AudioBuffer> create(unsigned numberOfChannels,
size_t numberOfFrames, float sampleRate); | 45 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames,
float sampleRate); |
47 static PassRefPtrWillBeRawPtr<AudioBuffer> create(unsigned numberOfChannels,
size_t numberOfFrames, float sampleRate, ExceptionState&); | 46 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames,
float sampleRate, ExceptionState&); |
48 | 47 |
49 // Returns 0 if data is not a valid audio file. | 48 // Returns 0 if data is not a valid audio file. |
50 static PassRefPtrWillBeRawPtr<AudioBuffer> createFromAudioFileData(const voi
d* data, size_t dataSize, bool mixToMono, float sampleRate); | 49 static AudioBuffer* createFromAudioFileData(const void* data, size_t dataSiz
e, bool mixToMono, float sampleRate); |
51 | 50 |
52 static PassRefPtrWillBeRawPtr<AudioBuffer> createFromAudioBus(AudioBus*); | 51 static AudioBuffer* createFromAudioBus(AudioBus*); |
53 | 52 |
54 // Format | 53 // Format |
55 size_t length() const { return m_length; } | 54 size_t length() const { return m_length; } |
56 double duration() const { return length() / static_cast<double>(sampleRate()
); } | 55 double duration() const { return length() / static_cast<double>(sampleRate()
); } |
57 float sampleRate() const { return m_sampleRate; } | 56 float sampleRate() const { return m_sampleRate; } |
58 | 57 |
59 // Channel data access | 58 // Channel data access |
60 unsigned numberOfChannels() const { return m_channels.size(); } | 59 unsigned numberOfChannels() const { return m_channels.size(); } |
61 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat
e&); | 60 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat
e&); |
62 Float32Array* getChannelData(unsigned channelIndex); | 61 Float32Array* getChannelData(unsigned channelIndex); |
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74 | 73 |
75 float m_sampleRate; | 74 float m_sampleRate; |
76 size_t m_length; | 75 size_t m_length; |
77 | 76 |
78 Vector<RefPtr<Float32Array> > m_channels; | 77 Vector<RefPtr<Float32Array> > m_channels; |
79 }; | 78 }; |
80 | 79 |
81 } // namespace blink | 80 } // namespace blink |
82 | 81 |
83 #endif // AudioBuffer_h | 82 #endif // AudioBuffer_h |
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