OLD | NEW |
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 |
OLD | NEW |