| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef ReverbInputBuffer_h |
| #define ReverbInputBuffer_h |
| |
| #include "platform/PlatformExport.h" |
| #include "platform/audio/AudioArray.h" |
| |
| namespace WebCore { |
| |
| // ReverbInputBuffer is used to buffer input samples for deferred processing by the background threads. |
| class PLATFORM_EXPORT ReverbInputBuffer { |
| public: |
| ReverbInputBuffer(size_t length); |
| |
| // The realtime audio thread keeps writing samples here. |
| // The assumption is that the buffer's length is evenly divisible by numberOfFrames (for nearly all cases this will be fine). |
| // FIXME: remove numberOfFrames restriction... |
| void write(const float* sourceP, size_t numberOfFrames); |
| |
| // Background threads can call this to check if there's anything to read... |
| size_t writeIndex() const { return m_writeIndex; } |
| |
| // The individual background threads read here (and hope that they can keep up with the buffer writing). |
| // readIndex is updated with the next readIndex to read from... |
| // The assumption is that the buffer's length is evenly divisible by numberOfFrames. |
| // FIXME: remove numberOfFrames restriction... |
| float* directReadFrom(int* readIndex, size_t numberOfFrames); |
| |
| void reset(); |
| |
| private: |
| AudioFloatArray m_buffer; |
| size_t m_writeIndex; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // ReverbInputBuffer_h |