realtime_analyser.cc | Explore in Territory

/*
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. OR ITS CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/modules/webaudio/realtime_analyser.h"

#include <limits.h>

#include <algorithm>
#include <bit>
#include <complex>

#include "third_party/blink/renderer/platform/audio/audio_bus.h"
#include "third_party/blink/renderer/platform/audio/audio_utilities.h"
#include "third_party/blink/renderer/platform/audio/vector_math.h"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"

namespace blink {

namespace {

void ApplyWindow(float* p, size_t n) { … }

// Returns x if x is finite (not NaN or infinite), otherwise returns
// default_value
float EnsureFinite(float x, float default_value) { … }

}  // namespace

RealtimeAnalyser::RealtimeAnalyser(unsigned render_quantum_frames)
    : … { … }

bool RealtimeAnalyser::SetFftSize(uint32_t size) { … }

void RealtimeAnalyser::GetFloatFrequencyData(DOMFloat32Array* destination_array,
                                             double current_time) { … }

void RealtimeAnalyser::GetByteFrequencyData(DOMUint8Array* destination_array,
                                            double current_time) { … }

void RealtimeAnalyser::GetFloatTimeDomainData(
    DOMFloat32Array* destination_array) { … }

void RealtimeAnalyser::GetByteTimeDomainData(DOMUint8Array* destination_array) { … }

void RealtimeAnalyser::WriteInput(AudioBus* bus, uint32_t frames_to_process) { … }

void RealtimeAnalyser::DoFFTAnalysis() { … }

void RealtimeAnalyser::ConvertToByteData(DOMUint8Array* destination_array) { … }

void RealtimeAnalyser::ConvertFloatToDb(DOMFloat32Array* destination_array) { … }

}  // namespace blink
chromium/third_party/blink/renderer/modules/webaudio/realtime_analyser.cc
