From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- dom/media/webaudio/blink/ReverbConvolverStage.h | 84 +++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 dom/media/webaudio/blink/ReverbConvolverStage.h (limited to 'dom/media/webaudio/blink/ReverbConvolverStage.h') diff --git a/dom/media/webaudio/blink/ReverbConvolverStage.h b/dom/media/webaudio/blink/ReverbConvolverStage.h new file mode 100644 index 0000000000..f770e76d45 --- /dev/null +++ b/dom/media/webaudio/blink/ReverbConvolverStage.h @@ -0,0 +1,84 @@ +/* + * 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 ReverbConvolverStage_h +#define ReverbConvolverStage_h + +#include "FFTConvolver.h" + +#include "nsTArray.h" +#include "mozilla/FFTBlock.h" +#include "mozilla/MemoryReporting.h" +#include "mozilla/UniquePtr.h" + +namespace WebCore { + +using mozilla::FFTBlock; + +class ReverbAccumulationBuffer; +class ReverbConvolver; + +// A ReverbConvolverStage represents the convolution associated with a +// sub-section of a large impulse response. It incorporates a delay line to +// account for the offset of the sub-section within the larger impulse response. +class ReverbConvolverStage { + public: + // renderPhase is useful to know so that we can manipulate the pre versus post + // delay so that stages will perform their heavy work (FFT processing) on + // different slices to balance the load in a real-time thread. + ReverbConvolverStage(const float* impulseResponse, size_t responseLength, + size_t reverbTotalLatency, size_t stageOffset, + size_t stageLength, size_t fftSize, size_t renderPhase, + ReverbAccumulationBuffer*); + + // |source| must point to an array of WEBAUDIO_BLOCK_SIZE elements. + void process(const float* source); + + void processInBackground(ReverbConvolver* convolver); + + // Useful for background processing + int inputReadIndex() const { return m_inputReadIndex; } + + size_t sizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const; + + private: + mozilla::UniquePtr m_fftKernel; + mozilla::UniquePtr m_fftConvolver; + + ReverbAccumulationBuffer* m_accumulationBuffer; + size_t m_accumulationReadIndex; + int m_inputReadIndex; + + size_t m_postDelayLength; + + nsTArray m_temporaryBuffer; +}; + +} // namespace WebCore + +#endif // ReverbConvolverStage_h -- cgit v1.2.3