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Side by Side Diff: Source/modules/webaudio/AudioBuffer.h

Issue 606653006: bindings: Adds DOMArrayBuffer, etc. as thin wrappers for ArrayBuffer, etc. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Synced. Created 6 years, 2 months ago
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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
(...skipping 12 matching lines...) Expand all
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 "core/dom/DOMTypedArray.h"
33 #include "wtf/Float32Array.h" 34 #include "wtf/Float32Array.h"
34 #include "wtf/PassRefPtr.h" 35 #include "wtf/PassRefPtr.h"
35 #include "wtf/RefPtr.h" 36 #include "wtf/RefPtr.h"
36 #include "wtf/Vector.h" 37 #include "wtf/Vector.h"
37 38
38 namespace blink { 39 namespace blink {
39 40
40 class AudioBus; 41 class AudioBus;
41 class ExceptionState; 42 class ExceptionState;
42 43
43 class AudioBuffer : public GarbageCollectedFinalized<AudioBuffer>, public Script Wrappable { 44 class AudioBuffer : public GarbageCollectedFinalized<AudioBuffer>, public Script Wrappable {
44 DEFINE_WRAPPERTYPEINFO(); 45 DEFINE_WRAPPERTYPEINFO();
45 public: 46 public:
46 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate); 47 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
47 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&); 48 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
48 49
49 // Returns 0 if data is not a valid audio file. 50 // Returns 0 if data is not a valid audio file.
50 static AudioBuffer* createFromAudioFileData(const void* data, size_t dataSiz e, bool mixToMono, float sampleRate); 51 static AudioBuffer* createFromAudioFileData(const void* data, size_t dataSiz e, bool mixToMono, float sampleRate);
51 52
52 static AudioBuffer* createFromAudioBus(AudioBus*); 53 static AudioBuffer* createFromAudioBus(AudioBus*);
53 54
54 // Format 55 // Format
55 size_t length() const { return m_length; } 56 size_t length() const { return m_length; }
56 double duration() const { return length() / static_cast<double>(sampleRate() ); } 57 double duration() const { return length() / static_cast<double>(sampleRate() ); }
57 float sampleRate() const { return m_sampleRate; } 58 float sampleRate() const { return m_sampleRate; }
58 59
59 // Channel data access 60 // Channel data access
60 unsigned numberOfChannels() const { return m_channels.size(); } 61 unsigned numberOfChannels() const { return m_channels.size(); }
61 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat e&); 62 PassRefPtr<DOMFloat32Array> getChannelData(unsigned channelIndex, ExceptionS tate&);
62 Float32Array* getChannelData(unsigned channelIndex); 63 Float32Array* getChannelData(unsigned channelIndex);
63 void zero(); 64 void zero();
64 65
65 void trace(Visitor*) { } 66 void trace(Visitor*) { }
66 67
67 virtual v8::Handle<v8::Object> associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*) override; 68 virtual v8::Handle<v8::Object> associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*) override;
68 69
69 protected: 70 protected:
70 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa te); 71 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa te);
71 explicit AudioBuffer(AudioBus*); 72 explicit AudioBuffer(AudioBus*);
72 bool createdSuccessfully(unsigned desiredNumberOfChannels) const; 73 bool createdSuccessfully(unsigned desiredNumberOfChannels) const;
73 74
74 float m_sampleRate; 75 float m_sampleRate;
75 size_t m_length; 76 size_t m_length;
76 77
77 Vector<RefPtr<Float32Array> > m_channels; 78 Vector<RefPtr<Float32Array> > m_channels;
78 }; 79 };
79 80
80 } // namespace blink 81 } // namespace blink
81 82
82 #endif // AudioBuffer_h 83 #endif // AudioBuffer_h
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