hrtf_database.cc | Explore in Territory

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#include "third_party/blink/renderer/platform/audio/hrtf_database.h"

#include <memory>
#include <utility>

#include "base/memory/ptr_util.h"
#include "third_party/blink/public/resources/grit/blink_resources.h"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"

namespace blink {

namespace {

// Minimum and maximum elevation angles (inclusive) for a HRTFDatabase.
constexpr int kMinElevation = …;
constexpr int kMaxElevation = …;
constexpr unsigned kRawElevationAngleSpacing = …;

// = 10, -45 -> +90 (each 15 degrees)
constexpr unsigned kNumberOfRawElevations = …;

// Interpolates by this factor to get the total number of elevations from
// every elevation loaded from resource.
constexpr unsigned kInterpolationFactor = …;

// Total number of elevations after interpolation.
constexpr unsigned kNumberOfTotalElevations = …;

// Returns the index for the correct HRTFElevation given the elevation angle.
unsigned IndexFromElevationAngle(double elevation_angle) { … }

}  // namespace

HRTFDatabase::HRTFDatabase(float sample_rate)
    : … { … }

unsigned HRTFDatabase::NumberOfAzimuths() { … }

unsigned HRTFDatabase::NumberOfRawElevations() { … }

void HRTFDatabase::GetKernelsFromAzimuthElevation(double azimuth_blend,
                                                  unsigned azimuth_index,
                                                  double elevation_angle,
                                                  HRTFKernel*& kernel_l,
                                                  HRTFKernel*& kernel_r,
                                                  double& frame_delay_l,
                                                  double& frame_delay_r) const { … }

}  // namespace blink
chromium/third_party/blink/renderer/platform/audio/hrtf_database.cc
