From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- dom/media/webaudio/blink/ReverbInputBuffer.h | 71 ++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 dom/media/webaudio/blink/ReverbInputBuffer.h (limited to 'dom/media/webaudio/blink/ReverbInputBuffer.h') diff --git a/dom/media/webaudio/blink/ReverbInputBuffer.h b/dom/media/webaudio/blink/ReverbInputBuffer.h new file mode 100644 index 000000000..906021c0d --- /dev/null +++ b/dom/media/webaudio/blink/ReverbInputBuffer.h @@ -0,0 +1,71 @@ +/* + * 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 m_buffer; + size_t m_writeIndex; +}; + +} // namespace WebCore + +#endif // ReverbInputBuffer_h -- cgit v1.2.3