SoundFile.hpp

//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
//
// 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.
//

#ifndef SFML_SOUNDFILE_HPP
#define SFML_SOUNDFILE_HPP

// Headers
#include <SFML/System/NonCopyable.hpp>
#include <sndfile.h>
#include <string>


namespace sf
{
namespace priv
{
class SoundFile : NonCopyable
{
public :

    SoundFile();

    ~SoundFile();

    std::size_t GetSamplesCount() const;

    unsigned int GetChannelsCount() const;

    unsigned int GetSampleRate() const;

    bool OpenRead(const std::string& filename);

    bool OpenRead(const void* data, std::size_t sizeInBytes);

    bool OpenWrite(const std::string& filename, unsigned int channelsCount, unsigned int sampleRate);

    std::size_t Read(Int16* data, std::size_t nbSamples);

    void Write(const Int16* data, std::size_t nbSamples);

    void Seek(float timeOffset);

private :

    static int GetFormatFromFilename(const std::string& filename);

    class MemoryIO
    {
    public :

        SF_VIRTUAL_IO Prepare(const void* data, std::size_t sizeInBytes);

    private :

        static sf_count_t GetLength(void* userData);
        static sf_count_t Read(void* ptr, sf_count_t count, void* userData);
        static sf_count_t Seek(sf_count_t offset, int whence, void* userData);
        static sf_count_t Tell(void* userData);
        static sf_count_t Write(const void* ptr, sf_count_t count, void* userData);

        const char* myDataStart;
        const char* myDataPtr;
        sf_count_t  myTotalSize;
    };

    // Member data
    SNDFILE*     myFile;          
    MemoryIO     myMemoryIO;      
    std::size_t  myNbSamples;     
    unsigned int myChannelsCount; 
    unsigned int mySampleRate;    
};

} // namespace priv

} // namespace sf


#endif // SFML_SOUNDFILE_HPP

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