The Tor Browser / file comparison
comparison: content/media/webaudio/blink/ReverbInputBuffer.h
content/media/webaudio/blink/ReverbInputBuffer.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:467c71f5f4bf |
|---|---|
| 1 /* | |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
| 14 * its contributors may be used to endorse or promote products derived | |
| 15 * from this software without specific prior written permission. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 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 | |
| 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 | |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #ifndef ReverbInputBuffer_h | |
| 30 #define ReverbInputBuffer_h | |
| 31 | |
| 32 #include "nsTArray.h" | |
| 33 #include "mozilla/MemoryReporting.h" | |
| 34 | |
| 35 namespace WebCore { | |
| 36 | |
| 37 // ReverbInputBuffer is used to buffer input samples for deferred processing by the background threads. | |
| 38 class ReverbInputBuffer { | |
| 39 public: | |
| 40 ReverbInputBuffer(size_t length); | |
| 41 | |
| 42 // The realtime audio thread keeps writing samples here. | |
| 43 // The assumption is that the buffer's length is evenly divisible by numberOfFrames (for nearly all cases this will be fine). | |
| 44 // FIXME: remove numberOfFrames restriction... | |
| 45 void write(const float* sourceP, size_t numberOfFrames); | |
| 46 | |
| 47 // Background threads can call this to check if there's anything to read... | |
| 48 size_t writeIndex() const { return m_writeIndex; } | |
| 49 | |
| 50 // The individual background threads read here (and hope that they can keep up with the buffer writing). | |
| 51 // readIndex is updated with the next readIndex to read from... | |
| 52 // The assumption is that the buffer's length is evenly divisible by numberOfFrames. | |
| 53 // FIXME: remove numberOfFrames restriction... | |
| 54 float* directReadFrom(int* readIndex, size_t numberOfFrames); | |
| 55 | |
| 56 void reset(); | |
| 57 | |
| 58 size_t sizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const | |
| 59 { | |
| 60 return m_buffer.SizeOfExcludingThis(aMallocSizeOf); | |
| 61 } | |
| 62 | |
| 63 | |
| 64 private: | |
| 65 nsTArray<float> m_buffer; | |
| 66 size_t m_writeIndex; | |
| 67 }; | |
| 68 | |
| 69 } // namespace WebCore | |
| 70 | |
| 71 #endif // ReverbInputBuffer_h |
