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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
**
******************************************************************************/
#include "qwasmaudiodevice_p.h"
#include <emscripten.h>
#include <AL/al.h>
#include <AL/alc.h>
QT_BEGIN_NAMESPACE
QWasmAudioDevice::QWasmAudioDevice(const char *device, const char *desc, bool isDef, QAudioDevice::Mode mode)
: QAudioDevicePrivate(device, mode)
{
description = QString::fromUtf8(desc);
isDefault = isDef;
minimumChannelCount = 1;
maximumChannelCount = 2;
minimumSampleRate = 1;
maximumSampleRate = 192'000;
// native openAL formats
supportedSampleFormats.append(QAudioFormat::UInt8);
supportedSampleFormats.append(QAudioFormat::Int16);
// Browsers use 32bit floats as native, but emscripten reccomends checking for the exension.
if (alIsExtensionPresent("AL_EXT_float32"))
supportedSampleFormats.append(QAudioFormat::Float);
preferredFormat.setChannelCount(2);
preferredFormat.setSampleRate(EM_ASM_INT({
var AudioContext = window.AudioContext || window.webkitAudioContext;
var ctx = new AudioContext();
var sr = ctx.sampleRate;
ctx.close();
return sr;
}));
auto f = QAudioFormat::Float;
if (!supportedSampleFormats.contains(f))
f = QAudioFormat::Int16;
preferredFormat.setSampleFormat(f);
}
QT_END_NAMESPACE
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