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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 11 matching lines...) Expand all Loading... |
| 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 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 ReverbAccumulationBuffer_h | 29 #ifndef ReverbAccumulationBuffer_h |
| 30 #define ReverbAccumulationBuffer_h | 30 #define ReverbAccumulationBuffer_h |
| 31 | 31 |
| 32 #include "AudioArray.h" | 32 #include "core/platform/audio/AudioArray.h" |
| 33 | 33 |
| 34 namespace WebCore { | 34 namespace WebCore { |
| 35 | 35 |
| 36 // ReverbAccumulationBuffer is a circular delay buffer with one client reading f
rom it and multiple clients | 36 // ReverbAccumulationBuffer is a circular delay buffer with one client reading f
rom it and multiple clients |
| 37 // writing/accumulating to it at different delay offsets from the read position.
The read operation will zero the memory | 37 // writing/accumulating to it at different delay offsets from the read position.
The read operation will zero the memory |
| 38 // just read from the buffer, so it will be ready for accumulation the next time
around. | 38 // just read from the buffer, so it will be ready for accumulation the next time
around. |
| 39 class ReverbAccumulationBuffer { | 39 class ReverbAccumulationBuffer { |
| 40 public: | 40 public: |
| 41 ReverbAccumulationBuffer(size_t length); | 41 ReverbAccumulationBuffer(size_t length); |
| 42 | 42 |
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| 58 | 58 |
| 59 private: | 59 private: |
| 60 AudioFloatArray m_buffer; | 60 AudioFloatArray m_buffer; |
| 61 size_t m_readIndex; | 61 size_t m_readIndex; |
| 62 size_t m_readTimeFrame; // for debugging (frame on continuous timeline) | 62 size_t m_readTimeFrame; // for debugging (frame on continuous timeline) |
| 63 }; | 63 }; |
| 64 | 64 |
| 65 } // namespace WebCore | 65 } // namespace WebCore |
| 66 | 66 |
| 67 #endif // ReverbAccumulationBuffer_h | 67 #endif // ReverbAccumulationBuffer_h |
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