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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 13 matching lines...) Expand all Loading... |
| 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 AudioBus_h | 29 #ifndef AudioBus_h |
| 30 #define AudioBus_h | 30 #define AudioBus_h |
| 31 | 31 |
| 32 #include "platform/audio/AudioChannel.h" | 32 #include "platform/audio/AudioChannel.h" |
| 33 #include "wtf/Noncopyable.h" | 33 #include "wtf/Noncopyable.h" |
| 34 #include "wtf/PassOwnPtr.h" |
| 34 #include "wtf/ThreadSafeRefCounted.h" | 35 #include "wtf/ThreadSafeRefCounted.h" |
| 35 #include "wtf/Vector.h" | 36 #include "wtf/Vector.h" |
| 36 #include <memory> | |
| 37 | 37 |
| 38 namespace blink { | 38 namespace blink { |
| 39 | 39 |
| 40 // An AudioBus represents a collection of one or more AudioChannels. | 40 // An AudioBus represents a collection of one or more AudioChannels. |
| 41 // The data layout is "planar" as opposed to "interleaved". | 41 // The data layout is "planar" as opposed to "interleaved". |
| 42 // An AudioBus with one channel is mono, an AudioBus with two channels is stereo
, etc. | 42 // An AudioBus with one channel is mono, an AudioBus with two channels is stereo
, etc. |
| 43 class PLATFORM_EXPORT AudioBus : public ThreadSafeRefCounted<AudioBus> { | 43 class PLATFORM_EXPORT AudioBus : public ThreadSafeRefCounted<AudioBus> { |
| 44 WTF_MAKE_NONCOPYABLE(AudioBus); | 44 WTF_MAKE_NONCOPYABLE(AudioBus); |
| 45 public: | 45 public: |
| 46 enum { | 46 enum { |
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| 152 AudioBus(unsigned numberOfChannels, size_t length, bool allocate); | 152 AudioBus(unsigned numberOfChannels, size_t length, bool allocate); |
| 153 | 153 |
| 154 void discreteSumFrom(const AudioBus&); | 154 void discreteSumFrom(const AudioBus&); |
| 155 | 155 |
| 156 // Up/down-mix by in-place summing upon the existing channel content. | 156 // Up/down-mix by in-place summing upon the existing channel content. |
| 157 // http://webaudio.github.io/web-audio-api/#channel-up-mixing-and-down-mixin
g | 157 // http://webaudio.github.io/web-audio-api/#channel-up-mixing-and-down-mixin
g |
| 158 void sumFromByUpMixing(const AudioBus&); | 158 void sumFromByUpMixing(const AudioBus&); |
| 159 void sumFromByDownMixing(const AudioBus&); | 159 void sumFromByDownMixing(const AudioBus&); |
| 160 | 160 |
| 161 size_t m_length; | 161 size_t m_length; |
| 162 Vector<std::unique_ptr<AudioChannel>> m_channels; | 162 Vector<OwnPtr<AudioChannel>> m_channels; |
| 163 int m_layout; | 163 int m_layout; |
| 164 float m_busGain; | 164 float m_busGain; |
| 165 std::unique_ptr<AudioFloatArray> m_dezipperGainValues; | 165 OwnPtr<AudioFloatArray> m_dezipperGainValues; |
| 166 bool m_isFirstTime; | 166 bool m_isFirstTime; |
| 167 float m_sampleRate; // 0.0 if unknown or N/A | 167 float m_sampleRate; // 0.0 if unknown or N/A |
| 168 }; | 168 }; |
| 169 | 169 |
| 170 } // namespace blink | 170 } // namespace blink |
| 171 | 171 |
| 172 #endif // AudioBus_h | 172 #endif // AudioBus_h |
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