mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
101 lines
4.6 KiB
C++
101 lines
4.6 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 HRTFElevation_h
|
|
#define HRTFElevation_h
|
|
|
|
#include "HRTFKernel.h"
|
|
#include "nsAutoRef.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<HRTFElevation> createBuiltin(int elevation, float sampleRate);
|
|
|
|
// Given two HRTFElevations, and an interpolation factor x: 0 -> 1, returns an interpolated HRTFElevation.
|
|
static nsReturnRef<HRTFElevation> 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);
|
|
|
|
private:
|
|
HRTFElevation(const HRTFElevation& other) MOZ_DELETE;
|
|
void operator=(const HRTFElevation& other) MOZ_DELETE;
|
|
|
|
HRTFElevation(HRTFKernelList *kernelListL, int elevation, float sampleRate)
|
|
: m_elevationAngle(elevation)
|
|
, m_sampleRate(sampleRate)
|
|
{
|
|
m_kernelListL.SwapElements(*kernelListL);
|
|
}
|
|
|
|
// 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<HRTFKernel> calculateKernelForAzimuthElevation(int azimuth, int elevation, SpeexResamplerState* resampler, float sampleRate);
|
|
|
|
HRTFKernelList m_kernelListL;
|
|
double m_elevationAngle;
|
|
float m_sampleRate;
|
|
};
|
|
|
|
} // namespace WebCore
|
|
|
|
template <>
|
|
class nsAutoRefTraits<WebCore::HRTFElevation> :
|
|
public nsPointerRefTraits<WebCore::HRTFElevation> {
|
|
public:
|
|
static void Release(WebCore::HRTFElevation* ptr) { delete(ptr); }
|
|
};
|
|
|
|
#endif // HRTFElevation_h
|