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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 Loading... |
| 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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