OpenMW/apps/openmw/mwsound/sound_decoder.hpp

#ifndef GAME_SOUND_SOUND_DECODER_H
#define GAME_SOUND_SOUND_DECODER_H

#include <string>

#include <OgreResourceGroupManager.h>

namespace MWSound
{
    enum SampleType {
        SampleType_UInt8,
        SampleType_Int16,
        SampleType_Float32
    };
    const char *getSampleTypeName(SampleType type);

    enum ChannelConfig {
        ChannelConfig_Mono,
        ChannelConfig_Stereo,
        ChannelConfig_Quad,
        ChannelConfig_5point1,
        ChannelConfig_7point1
    };
    const char *getChannelConfigName(ChannelConfig config);

    size_t framesToBytes(size_t frames, ChannelConfig config, SampleType type);
    size_t bytesToFrames(size_t bytes, ChannelConfig config, SampleType type);

    struct Sound_Decoder
    {
        Ogre::ResourceGroupManager &mResourceMgr;

        virtual void open(const std::string &fname) = 0;
        virtual void close() = 0;

        virtual std::string getName() = 0;
        virtual void getInfo(int *samplerate, ChannelConfig *chans, SampleType *type) = 0;

        virtual size_t read(char *buffer, size_t bytes) = 0;
        virtual void readAll(std::vector<char> &output);
        virtual void rewind() = 0;
        virtual size_t getSampleOffset() = 0;

        Sound_Decoder() : mResourceMgr(Ogre::ResourceGroupManager::getSingleton())
        { }
        virtual ~Sound_Decoder() { }

    private:
        Sound_Decoder(const Sound_Decoder &rhs);
        Sound_Decoder& operator=(const Sound_Decoder &rhs);
    };
}

#endif