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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/media/webaudio/blink/HRTFDatabase.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | dom/media/webaudio/blink/HRTFDatabase.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/dom/media/webaudio/blink/HRTFDatabase.h b/dom/media/webaudio/blink/HRTFDatabase.h new file mode 100644 index 0000000000..50cf2958bd --- /dev/null +++ b/dom/media/webaudio/blink/HRTFDatabase.h @@ -0,0 +1,104 @@ +/* + * 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); + + // clang-format off + // 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. + // clang-format on + 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) = delete; + void operator=(const HRTFDatabase& other) = 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 |