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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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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 "core/dom/DOMTypedArray.h" |
| 34 #include "core/dom/NotShared.h" |
34 #include "modules/ModulesExport.h" | 35 #include "modules/ModulesExport.h" |
35 #include "wtf/PassRefPtr.h" | 36 #include "wtf/PassRefPtr.h" |
36 #include "wtf/RefPtr.h" | 37 #include "wtf/RefPtr.h" |
37 #include "wtf/Vector.h" | 38 #include "wtf/Vector.h" |
38 #include "wtf/build_config.h" | 39 #include "wtf/build_config.h" |
39 | 40 |
40 namespace blink { | 41 namespace blink { |
41 | 42 |
42 class AudioBus; | 43 class AudioBus; |
43 class AudioBufferOptions; | 44 class AudioBufferOptions; |
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67 | 68 |
68 // Format | 69 // Format |
69 size_t length() const { return length_; } | 70 size_t length() const { return length_; } |
70 double duration() const { | 71 double duration() const { |
71 return length() / static_cast<double>(sampleRate()); | 72 return length() / static_cast<double>(sampleRate()); |
72 } | 73 } |
73 float sampleRate() const { return sample_rate_; } | 74 float sampleRate() const { return sample_rate_; } |
74 | 75 |
75 // Channel data access | 76 // Channel data access |
76 unsigned numberOfChannels() const { return channels_.size(); } | 77 unsigned numberOfChannels() const { return channels_.size(); } |
77 DOMFloat32Array* getChannelData(unsigned channel_index, ExceptionState&); | 78 NotShared<DOMFloat32Array> getChannelData(unsigned channel_index, |
78 DOMFloat32Array* getChannelData(unsigned channel_index); | 79 ExceptionState&); |
79 void copyFromChannel(DOMFloat32Array*, long channel_number, ExceptionState&); | 80 NotShared<DOMFloat32Array> getChannelData(unsigned channel_index); |
80 void copyFromChannel(DOMFloat32Array*, | 81 void copyFromChannel(NotShared<DOMFloat32Array>, |
| 82 long channel_number, |
| 83 ExceptionState&); |
| 84 void copyFromChannel(NotShared<DOMFloat32Array>, |
81 long channel_number, | 85 long channel_number, |
82 unsigned long start_in_channel, | 86 unsigned long start_in_channel, |
83 ExceptionState&); | 87 ExceptionState&); |
84 void copyToChannel(DOMFloat32Array*, long channel_number, ExceptionState&); | 88 void copyToChannel(NotShared<DOMFloat32Array>, |
85 void copyToChannel(DOMFloat32Array*, | 89 long channel_number, |
| 90 ExceptionState&); |
| 91 void copyToChannel(NotShared<DOMFloat32Array>, |
86 long channel_number, | 92 long channel_number, |
87 unsigned long start_in_channel, | 93 unsigned long start_in_channel, |
88 ExceptionState&); | 94 ExceptionState&); |
89 | 95 |
90 void Zero(); | 96 void Zero(); |
91 | 97 |
92 DEFINE_INLINE_TRACE() { visitor->Trace(channels_); } | 98 DEFINE_INLINE_TRACE() { visitor->Trace(channels_); } |
93 | 99 |
94 private: | 100 private: |
95 explicit AudioBuffer(AudioBus*); | 101 explicit AudioBuffer(AudioBus*); |
96 | 102 |
97 static DOMFloat32Array* CreateFloat32ArrayOrNull(size_t length); | 103 static DOMFloat32Array* CreateFloat32ArrayOrNull(size_t length); |
98 | 104 |
99 AudioBuffer(unsigned number_of_channels, | 105 AudioBuffer(unsigned number_of_channels, |
100 size_t number_of_frames, | 106 size_t number_of_frames, |
101 float sample_rate); | 107 float sample_rate); |
102 bool CreatedSuccessfully(unsigned desired_number_of_channels) const; | 108 bool CreatedSuccessfully(unsigned desired_number_of_channels) const; |
103 | 109 |
104 float sample_rate_; | 110 float sample_rate_; |
105 size_t length_; | 111 size_t length_; |
106 | 112 |
107 HeapVector<Member<DOMFloat32Array>> channels_; | 113 HeapVector<Member<DOMFloat32Array>> channels_; |
108 }; | 114 }; |
109 | 115 |
110 } // namespace blink | 116 } // namespace blink |
111 | 117 |
112 #endif // AudioBuffer_h | 118 #endif // AudioBuffer_h |
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