Audio: Rewrite audio module
This commit is contained in:
Jérôme Leclercq
309
src/Nazara/Audio/OpenALDevice.cpp
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309
src/Nazara/Audio/OpenALDevice.cpp
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// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Audio module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Audio/OpenALDevice.hpp>
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#include <Nazara/Audio/OpenALBuffer.hpp>
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#include <Nazara/Audio/OpenALLibrary.hpp>
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#include <Nazara/Audio/OpenALSource.hpp>
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#include <cstring>
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#include <stdexcept>
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#include <Nazara/Audio/Debug.hpp>
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namespace Nz
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{
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namespace
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{
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thread_local ALCcontext* s_currentContext;
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}
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OpenALDevice::OpenALDevice(OpenALLibrary& library, ALCdevice* device) :
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m_library(library),
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m_device(device)
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{
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m_context = m_library.alcCreateContext(device, nullptr);
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if (!m_context)
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throw std::runtime_error("failed to create OpenAL context");
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MakeContextCurrent();
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m_renderer = reinterpret_cast<const char*>(m_library.alGetString(AL_RENDERER));
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m_vendor = reinterpret_cast<const char*>(m_library.alGetString(AL_VENDOR));
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// We complete the formats table
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m_audioFormatValues.fill(0);
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_Mono)] = AL_FORMAT_MONO16;
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_Stereo)] = AL_FORMAT_STEREO16;
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// "The presence of an enum value does not guarantee the applicability of an extension to the current context."
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if (library.alIsExtensionPresent("AL_EXT_MCFORMATS"))
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{
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_Quad)] = m_library.alGetEnumValue("AL_FORMAT_QUAD16");
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_5_1)] = m_library.alGetEnumValue("AL_FORMAT_51CHN16");
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_6_1)] = m_library.alGetEnumValue("AL_FORMAT_61CHN16");
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_7_1)] = m_library.alGetEnumValue("AL_FORMAT_71CHN16");
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}
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else if (library.alIsExtensionPresent("AL_LOKI_quadriphonic"))
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m_audioFormatValues[UnderlyingCast(AudioFormat::I16_Quad)] = m_library.alGetEnumValue("AL_FORMAT_QUAD16_LOKI");
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SetListenerDirection(Vector3f::Forward());
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}
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OpenALDevice::~OpenALDevice()
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{
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MakeContextCurrent();
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m_library.alcDestroyContext(m_context);
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m_library.alcCloseDevice(m_device);
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if (s_currentContext == m_context)
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s_currentContext = nullptr;
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}
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std::shared_ptr<AudioBuffer> OpenALDevice::CreateBuffer()
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{
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MakeContextCurrent();
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ALuint bufferId = 0;
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m_library.alGenBuffers(1, &bufferId);
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if (bufferId == 0)
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return {};
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return std::make_shared<OpenALBuffer>(shared_from_this(), m_library, bufferId);
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}
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std::shared_ptr<AudioSource> OpenALDevice::CreateSource()
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{
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MakeContextCurrent();
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ALuint sourceId = 0;
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m_library.alGenSources(1, &sourceId);
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if (sourceId == 0)
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return {};
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return std::make_shared<OpenALSource>(shared_from_this(), m_library, sourceId);
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}
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/*!
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* \brief Gets the factor of the Doppler effect
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* \return Global factor of the Doppler effect
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*/
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float OpenALDevice::GetDopplerFactor() const
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{
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MakeContextCurrent();
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return m_library.alGetFloat(AL_DOPPLER_FACTOR);
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}
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/*!
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* \brief Gets the global volume
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* \return Float between [0, inf) with 100.f being the default
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*/
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float OpenALDevice::GetGlobalVolume() const
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{
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MakeContextCurrent();
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ALfloat gain = 0.f;
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m_library.alGetListenerf(AL_GAIN, &gain);
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return gain * 100.f;
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}
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/*!
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* \brief Gets the direction of the listener
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* \return Direction of the listener, in front of the listener
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*
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* \param up Current up direction
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*
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* \see GetListenerRotation
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*/
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Vector3f OpenALDevice::GetListenerDirection(Vector3f* up) const
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{
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MakeContextCurrent();
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ALfloat orientation[6];
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m_library.alGetListenerfv(AL_ORIENTATION, orientation);
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if (up)
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up->Set(orientation[3], orientation[4], orientation[5]);
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return Vector3f(orientation[0], orientation[1], orientation[2]);
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}
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/*!
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* \brief Gets the position of the listener
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* \return Position of the listener
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*
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* \see GetListenerVelocity
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*/
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Vector3f OpenALDevice::GetListenerPosition() const
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{
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MakeContextCurrent();
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Vector3f position;
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m_library.alGetListenerfv(AL_POSITION, &position.x);
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return position;
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}
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/*!
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* \brief Gets the rotation of the listener
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* \return Rotation of the listener
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*
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* \param up Current up direction
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*
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* \see GetListenerDirection
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*/
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Quaternionf OpenALDevice::GetListenerRotation(Vector3f* up) const
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{
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MakeContextCurrent();
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ALfloat orientation[6];
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m_library.alGetListenerfv(AL_ORIENTATION, orientation);
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Vector3f forward(orientation[0], orientation[1], orientation[2]);
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if (up)
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up->Set(orientation[3], orientation[4], orientation[5]);
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return Quaternionf::RotationBetween(Vector3f::Forward(), forward);
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}
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/*!
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* \brief Gets the velocity of the listener
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* \return Velocity of the listener
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*
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* \see GetListenerPosition
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*/
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Vector3f OpenALDevice::GetListenerVelocity() const
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{
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MakeContextCurrent();
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Vector3f velocity;
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m_library.alGetListenerfv(AL_VELOCITY, &velocity.x);
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return velocity;
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}
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void OpenALDevice::MakeContextCurrent() const
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{
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if (s_currentContext != m_context)
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{
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m_library.alcMakeContextCurrent(m_context);
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s_currentContext = m_context;
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}
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}
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/*!
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* \brief Gets the speed of sound
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* \return Speed of sound
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*/
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float OpenALDevice::GetSpeedOfSound() const
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{
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MakeContextCurrent();
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return m_library.alGetFloat(AL_SPEED_OF_SOUND);
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}
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/*!
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* \brief Checks whether the format is supported by the engine
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* \return true if it is the case
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*
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* \param format Format to check
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*/
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bool OpenALDevice::IsFormatSupported(AudioFormat format) const
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{
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if (format == AudioFormat::Unknown)
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return false;
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return m_audioFormatValues[UnderlyingCast(format)] != 0;
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}
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/*!
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* \brief Sets the factor of the doppler effect
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*
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* \param dopplerFactor Global factor of the doppler effect
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*/
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void OpenALDevice::SetDopplerFactor(float dopplerFactor)
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{
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MakeContextCurrent();
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m_library.alDopplerFactor(dopplerFactor);
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}
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/*!
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* \brief Sets the global volume
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*
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* \param volume Float between [0, inf) with 1.f being the default
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*/
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void OpenALDevice::SetGlobalVolume(float volume)
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{
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MakeContextCurrent();
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m_library.alListenerf(AL_GAIN, volume);
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}
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/*!
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* \brief Sets the direction of the listener
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*
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* \param direction Direction of the listener, in front of the listener
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* \param up Up vector
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*
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* \see SetListenerDirection, SetListenerRotation
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*/
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void OpenALDevice::SetListenerDirection(const Vector3f& direction, const Vector3f& up)
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{
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MakeContextCurrent();
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ALfloat orientation[6] =
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{
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direction.x, direction.y, direction.z,
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up.x, up.y, up.z
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};
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m_library.alListenerfv(AL_ORIENTATION, orientation);
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}
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/*!
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* \brief Sets the position of the listener
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*
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* \param position Position of the listener
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*
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* \see SetListenerVelocity
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*/
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void OpenALDevice::SetListenerPosition(const Vector3f& position)
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{
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MakeContextCurrent();
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m_library.alListenerfv(AL_POSITION, &position.x);
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}
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/*!
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* \brief Sets the velocity of the listener
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*
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* \param velocity Velocity of the listener
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*
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* \see SetListenerPosition
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*/
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void OpenALDevice::SetListenerVelocity(const Vector3f& velocity)
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{
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MakeContextCurrent();
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m_library.alListenerfv(AL_VELOCITY, &velocity.x);
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}
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/*!
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* \brief Sets the speed of sound
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*
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* \param speed Speed of sound
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*/
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void OpenALDevice::SetSpeedOfSound(float speed)
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{
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MakeContextCurrent();
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m_library.alSpeedOfSound(speed);
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}
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}
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