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SFML - Simple and Fast Multimedia Library

SFML v1.6

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AudioDevice.cpp

//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2009 Laurent Gomila ([email protected])
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//

// Headers
#include <SFML/Audio/AudioDevice.hpp>
#include <SFML/Audio/AudioResource.hpp>
#include <SFML/Audio/Listener.hpp>
#include <algorithm>
#include <iostream>


namespace sf
{
namespace priv
{
// Static member data
AudioDevice* AudioDevice::ourInstance;


AudioDevice::AudioDevice() :
myRefCount(0)
{
    // Create the device
    myDevice = alcOpenDevice(NULL);

    if (myDevice)
    {
        // Create the context
        myContext = alcCreateContext(myDevice, NULL);

        if (myContext)
        {
            // Set the context as the current one (we'll only need one)
            alcMakeContextCurrent(myContext);

            // Initialize the listener, located at the origin and looking along the Z axis
            Listener::SetPosition(0.f, 0.f, 0.f);
            Listener::SetTarget(0.f, 0.f, -1.f);
        }
        else
        {
            std::cerr << "Failed to create the audio context" << std::endl;
        }
    }
    else
    {
        std::cerr << "Failed to open the audio device" << std::endl;
    }
}


AudioDevice::~AudioDevice()
{
    // Destroy the context
    alcMakeContextCurrent(NULL);
    if (myContext)
        alcDestroyContext(myContext);
    
    // Destroy the device
    if (myDevice)
        alcCloseDevice(myDevice);
}


AudioDevice& AudioDevice::GetInstance()
{
    // Create the audio device if it doesn't exist
    if (!ourInstance)
        ourInstance = new AudioDevice;

    return *ourInstance;
}


void AudioDevice::AddReference()
{
    // Create the audio device if it doesn't exist
    if (!ourInstance)
        ourInstance = new AudioDevice;

    // Increase the references count
    ourInstance->myRefCount++;
}


void AudioDevice::RemoveReference()
{
    // Decrease the references count
    ourInstance->myRefCount--;

    // Destroy the audio device if the references count reaches 0
    if (ourInstance->myRefCount == 0)
    {
        delete ourInstance;
        ourInstance = NULL;
    }
}


ALCdevice* AudioDevice::GetDevice() const
{
    return myDevice;
}


ALenum AudioDevice::GetFormatFromChannelsCount(unsigned int ChannelsCount) const
{
    // Find the good format according to the number of channels
    switch (ChannelsCount)
    {
        case 1 : return AL_FORMAT_MONO16;
        case 2 : return AL_FORMAT_STEREO16;
        case 4 : return alGetEnumValue("AL_FORMAT_QUAD16");
        case 6 : return alGetEnumValue("AL_FORMAT_51CHN16");
        case 7 : return alGetEnumValue("AL_FORMAT_61CHN16");
        case 8 : return alGetEnumValue("AL_FORMAT_71CHN16");
    }

    return 0;
}

} // namespace priv

} // namespace sf

 ::  Copyright © 2007-2008 Laurent Gomila, all rights reserved  ::  Documentation generated by doxygen 1.5.2  :: 

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  • sf::Glyph
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  • sf::Image
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  • sf::Sound
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  • sf::SoundStream::SoundStream::Chunk
  • sf::Sprite
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  • sf::Unicode::Unicode::Text
  • sf::Vector2< T >
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  • sf::VideoMode
  • sf::View
  • sf::Window
  • sf::WindowListener
  • sf::WindowSettings
• Class Hierarchy
  • sf::AudioResource
    • sf::Sound
      • sf::SoundStream
        • sf::Music
    • sf::SoundBuffer
  • sf::Clock
  • sf::Color
  • sf::Drawable
    • sf::PostFX
    • sf::Shape
    • sf::Sprite
    • sf::String
  • sf::Event
  • sf::Event::Event::JoyButtonEvent
  • sf::Event::Event::JoyMoveEvent
  • sf::Event::Event::KeyEvent
  • sf::Event::Event::MouseButtonEvent
  • sf::Event::Event::MouseMoveEvent
  • sf::Event::Event::MouseWheelEvent
  • sf::Event::Event::SizeEvent
  • sf::Event::Event::TextEvent
  • sf::Ftp::Ftp::Response
    • sf::Ftp::Ftp::DirectoryResponse
    • sf::Ftp::Ftp::ListingResponse
  • sf::Glyph
  • sf::Http::Http::Request
  • sf::Http::Http::Response
  • sf::IPAddress
  • sf::Listener
  • sf::Matrix3
  • sf::NonCopyable
    • sf::Context
    • sf::Ftp
    • sf::Http
    • sf::Input
    • sf::Lock
    • sf::Mutex
    • sf::Thread
      • sf::SoundRecorder
        • sf::SoundBufferRecorder
      • sf::SoundStream
    • sf::Window
      • sf::RenderWindow
  • sf::Packet
  • sf::Randomizer
  • sf::Rect< T >
  • sf::RenderTarget
    • sf::RenderWindow
  • sf::Resource< T >
  • sf::Resource< Font >
    • sf::Font
  • sf::Resource< Image >
    • sf::Image
  • sf::Resource< SoundBuffer >
    • sf::SoundBuffer
  • sf::ResourcePtr< T >
  • sf::SelectorBase
    • sf::Selector< Type >
  • sf::SocketHelper
  • sf::SocketTCP
  • sf::SocketUDP
  • sf::SoundStream::SoundStream::Chunk
  • sf::Unicode
  • sf::Unicode::Unicode::Text
  • sf::Vector2< T >
  • sf::Vector3< T >
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    • sf::Input
    • sf::Window
  • sf::WindowSettings
• Class Members
• Namespace List
  • sf::Blend
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  • sf::Style
• Namespace Members
• File List
  • Arial.hpp
  • Audio.hpp
  • AudioDevice.cpp
  • AudioDevice.hpp
  • AudioResource.cpp
  • AudioResource.hpp
  • Clock.cpp
  • Clock.hpp
  • Color.cpp
  • Color.hpp
  • Config.hpp
  • Context.cpp
  • Context.hpp
  • Doxygen.hpp
  • Drawable.cpp
  • Drawable.hpp
  • Event.hpp
  • Font.cpp
  • Font.hpp
  • FontLoader.cpp
  • FontLoader.hpp
  • Ftp.cpp
  • Ftp.hpp
  • Glyph.hpp
  • Graphics.hpp
  • GraphicsContext.cpp
  • GraphicsContext.hpp
  • Http.cpp
  • Http.hpp
  • Image.cpp
  • Image.hpp
  • ImageLoader.cpp
  • ImageLoader.hpp
  • Input.cpp
  • Input.hpp
  • IPAddress.cpp
  • IPAddress.hpp
  • Cocoa/Joystick.cpp
  • Template for new ports/Joystick.cpp
  • Win32/Joystick.cpp
  • Cocoa/Joystick.hpp
  • Joystick.hpp
  • Template for new ports/Joystick.hpp
  • Win32/Joystick.hpp
  • Listener.cpp
  • Listener.hpp
  • Lock.cpp
  • Lock.hpp
  • Matrix3.cpp
  • Matrix3.hpp
  • Matrix3.inl
  • Music.cpp
  • Music.hpp
  • Mutex.cpp
  • Mutex.hpp
  • Win32/Mutex.hpp
  • Network.hpp
  • NonCopyable.hpp
  • OpenAL.hpp
  • OpenGL.hpp
  • Packet.cpp
  • Packet.hpp
  • Platform.cpp
  • Platform.hpp
  • Win32/Platform.hpp
  • PostFX.cpp
  • PostFX.hpp
  • Randomizer.cpp
  • Randomizer.hpp
  • Rect.hpp
  • Rect.inl
  • RenderTarget.cpp
  • RenderTarget.hpp
  • RenderWindow.cpp
  • RenderWindow.hpp
  • Resource.hpp
  • Resource.inl
  • ResourcePtr.inl
  • Selector.hpp
  • Selector.inl
  • SelectorBase.cpp
  • SelectorBase.hpp
  • SFML_Main.cpp
  • Shape.cpp
  • Shape.hpp
  • Sleep.cpp
  • Sleep.hpp
  • SocketHelper.cpp
  • SocketHelper.hpp
  • Win32/SocketHelper.hpp
  • Sockets.hpp
  • SocketTCP.cpp
  • SocketTCP.hpp
  • SocketUDP.cpp
  • SocketUDP.hpp
  • Sound.cpp
  • Sound.hpp
  • SoundBuffer.cpp
  • SoundBuffer.hpp
  • SoundBufferRecorder.cpp
  • SoundBufferRecorder.hpp
  • SoundFile.cpp
  • SoundFile.hpp
  • SoundFileDefault.cpp
  • SoundFileDefault.hpp
  • SoundFileOgg.cpp
  • SoundFileOgg.hpp
  • SoundRecorder.cpp
  • SoundRecorder.hpp
  • SoundStream.cpp
  • SoundStream.hpp
  • Sprite.cpp
  • Sprite.hpp
  • String.cpp
  • String.hpp
  • System.hpp
  • Thread.cpp
  • Thread.hpp
  • Win32/Thread.hpp
  • Unicode.cpp
  • Unicode.hpp
  • Unicode.inl
  • Vector2.hpp
  • Vector2.inl
  • Vector3.hpp
  • Vector3.inl
  • VideoMode.cpp
  • VideoMode.hpp
  • Cocoa/VideoModeSupport.cpp
  • Template for new ports/VideoModeSupport.cpp
  • Win32/VideoModeSupport.cpp
  • Cocoa/VideoModeSupport.hpp
  • Template for new ports/VideoModeSupport.hpp
  • VideoModeSupport.hpp
  • Win32/VideoModeSupport.hpp
  • View.cpp
  • View.hpp
  • Window.cpp
  • Window/Window.hpp
  • Window.hpp
  • WindowHandle.hpp
  • WindowImpl.cpp
  • WindowImpl.hpp
  • WindowImplCocoa.hpp
  • WindowImplWin32.cpp
  • WindowImplWin32.hpp
  • WindowImplXXX.cpp
  • WindowImplXXX.hpp
  • WindowListener.hpp
  • WindowSettings.hpp
  • WindowStyle.hpp

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