зеркало из https://github.com/mozilla/gecko-dev.git
72 строки
2.9 KiB
C++
72 строки
2.9 KiB
C++
/*
|
|
* 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 "nsTArray.h"
|
|
#include "mozilla/MemoryReporting.h"
|
|
|
|
namespace WebCore {
|
|
|
|
// ReverbInputBuffer is used to buffer input samples for deferred processing by the background threads.
|
|
class ReverbInputBuffer {
|
|
public:
|
|
explicit 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();
|
|
|
|
size_t sizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
return m_buffer.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
|
|
private:
|
|
nsTArray<float> m_buffer;
|
|
size_t m_writeIndex;
|
|
};
|
|
|
|
} // namespace WebCore
|
|
|
|
#endif // ReverbInputBuffer_h
|