mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-07 04:05:49 +00:00
95 lines
3.9 KiB
C++
95 lines
3.9 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 HRTFDatabase_h
|
|
#define HRTFDatabase_h
|
|
|
|
#include "HRTFElevation.h"
|
|
#include "nsAutoRef.h"
|
|
#include "nsTArray.h"
|
|
#include "mozilla/MemoryReporting.h"
|
|
|
|
namespace WebCore {
|
|
|
|
class HRTFKernel;
|
|
|
|
class HRTFDatabase {
|
|
public:
|
|
static nsReturnRef<HRTFDatabase> create(float sampleRate);
|
|
|
|
// getKernelsFromAzimuthElevation() returns a left and right ear kernel, and an interpolated left and right frame delay for the given azimuth and elevation.
|
|
// azimuthBlend must be in the range 0 -> 1.
|
|
// Valid values for azimuthIndex are 0 -> HRTFElevation::NumberOfTotalAzimuths - 1 (corresponding to angles of 0 -> 360).
|
|
// Valid values for elevationAngle are MinElevation -> MaxElevation.
|
|
void getKernelsFromAzimuthElevation(double azimuthBlend, unsigned azimuthIndex, double elevationAngle, HRTFKernel* &kernelL, HRTFKernel* &kernelR, double& frameDelayL, double& frameDelayR);
|
|
|
|
// Returns the number of different azimuth angles.
|
|
static unsigned numberOfAzimuths() { return HRTFElevation::NumberOfTotalAzimuths; }
|
|
|
|
float sampleRate() const { return m_sampleRate; }
|
|
|
|
// Number of elevations loaded from resource.
|
|
static const unsigned NumberOfRawElevations;
|
|
|
|
size_t sizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
|
|
|
|
private:
|
|
HRTFDatabase(const HRTFDatabase& other) MOZ_DELETE;
|
|
void operator=(const HRTFDatabase& other) MOZ_DELETE;
|
|
|
|
explicit HRTFDatabase(float sampleRate);
|
|
|
|
// Minimum and maximum elevation angles (inclusive) for a HRTFDatabase.
|
|
static const int MinElevation;
|
|
static const int MaxElevation;
|
|
static const unsigned RawElevationAngleSpacing;
|
|
|
|
// Interpolates by this factor to get the total number of elevations from every elevation loaded from resource.
|
|
static const unsigned InterpolationFactor;
|
|
|
|
// Total number of elevations after interpolation.
|
|
static const unsigned NumberOfTotalElevations;
|
|
|
|
// Returns the index for the correct HRTFElevation given the elevation angle.
|
|
static unsigned indexFromElevationAngle(double);
|
|
|
|
nsTArray<nsAutoRef<HRTFElevation> > m_elevations;
|
|
float m_sampleRate;
|
|
};
|
|
|
|
} // namespace WebCore
|
|
|
|
template <>
|
|
class nsAutoRefTraits<WebCore::HRTFDatabase> :
|
|
public nsPointerRefTraits<WebCore::HRTFDatabase> {
|
|
public:
|
|
static void Release(WebCore::HRTFDatabase* ptr) { delete(ptr); }
|
|
};
|
|
|
|
#endif // HRTFDatabase_h
|