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/HRTFElevation.h | 114 +++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 dom/media/webaudio/blink/HRTFElevation.h (limited to 'dom/media/webaudio/blink/HRTFElevation.h') diff --git a/dom/media/webaudio/blink/HRTFElevation.h b/dom/media/webaudio/blink/HRTFElevation.h new file mode 100644 index 0000000000..cd54bbc04a --- /dev/null +++ b/dom/media/webaudio/blink/HRTFElevation.h @@ -0,0 +1,114 @@ +/* + * 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 HRTFElevation_h +#define HRTFElevation_h + +#include "HRTFKernel.h" +#include "nsAutoRef.h" +#include "mozilla/MemoryReporting.h" + +struct SpeexResamplerState_; +typedef struct SpeexResamplerState_ SpeexResamplerState; + +namespace WebCore { + +// HRTFElevation contains all of the HRTFKernels (one left ear and one right ear +// per azimuth angle) for a particular elevation. + +class HRTFElevation { + public: + // Loads and returns an HRTFElevation with the given HRTF database subject + // name and elevation from browser (or WebKit.framework) resources. Normally, + // there will only be a single HRTF database set, but this API supports the + // possibility of multiple ones with different names. Interpolated azimuths + // will be generated based on InterpolationFactor. Valid values for elevation + // are -45 -> +90 in 15 degree increments. + static nsReturnRef createBuiltin(int elevation, + float sampleRate); + + // Given two HRTFElevations, and an interpolation factor x: 0 -> 1, returns an + // interpolated HRTFElevation. + static nsReturnRef createByInterpolatingSlices( + HRTFElevation* hrtfElevation1, HRTFElevation* hrtfElevation2, float x, + float sampleRate); + + double elevationAngle() const { return m_elevationAngle; } + unsigned numberOfAzimuths() const { return NumberOfTotalAzimuths; } + float sampleRate() const { return m_sampleRate; } + + // Returns the left and right kernels for the given azimuth index. + // The interpolated delays based on azimuthBlend: 0 -> 1 are returned in + // frameDelayL and frameDelayR. + void getKernelsFromAzimuth(double azimuthBlend, unsigned azimuthIndex, + HRTFKernel*& kernelL, HRTFKernel*& kernelR, + double& frameDelayL, double& frameDelayR); + + // Total number of azimuths after interpolation. + static const unsigned NumberOfTotalAzimuths; + + static size_t fftSizeForSampleRate(float sampleRate); + + size_t sizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const; + + private: + HRTFElevation(const HRTFElevation& other) = delete; + void operator=(const HRTFElevation& other) = delete; + + HRTFElevation(HRTFKernelList&& kernelListL, int elevation, float sampleRate) + : m_kernelListL(std::move(kernelListL)), + m_elevationAngle(elevation), + m_sampleRate(sampleRate) {} + + // Returns the list of left ear HRTFKernels for all the azimuths going from 0 + // to 360 degrees. + const HRTFKernelList& kernelListL() { return m_kernelListL; } + + // Given a specific azimuth and elevation angle, returns the left HRTFKernel. + // Values for azimuth must be multiples of 15 in 0 -> 345, + // but not all azimuths are available for elevations > +45. + // Valid values for elevation are -45 -> +90 in 15 degree increments. + static nsReturnRef calculateKernelForAzimuthElevation( + int azimuth, int elevation, SpeexResamplerState* resampler, + float sampleRate); + + HRTFKernelList m_kernelListL; + double m_elevationAngle; + float m_sampleRate; +}; + +} // namespace WebCore + +template <> +class nsAutoRefTraits + : public nsPointerRefTraits { + public: + static void Release(WebCore::HRTFElevation* ptr) { delete (ptr); } +}; + +#endif // HRTFElevation_h -- cgit v1.2.3