TheoraDataSource.h

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/************************************************************************************
This source file is part of the Theora Video Playback Library
For latest info, see http://libtheoraplayer.googlecode.com
*************************************************************************************
Copyright (c) 2008-2014 Kresimir Spes (kspes@cateia.com)
This program is free software; you can redistribute it and/or modify it under
the terms of the BSD license: http://opensource.org/licenses/BSD-3-Clause
*************************************************************************************/
#ifndef _TheoraDataSource_h
#define _TheoraDataSource_h

#include <stdint.h>
#include <limits.h>
#include <string>
#include "TheoraExport.h"

class TheoraPlayerExport TheoraDataSource
{
public:

        virtual ~TheoraDataSource();
        virtual int read(void* output,int nBytes) = 0;
        virtual std::string repr() = 0;
        virtual void seek(uint64_t byte_index) = 0;
        virtual uint64_t size() = 0;
        virtual uint64_t tell() = 0;
};


class TheoraPlayerExport TheoraFileDataSource : public TheoraDataSource
{
        FILE* mFilePtr;
        std::string mFilename;
        uint64_t mSize;
        
        void openFile();
public:
        TheoraFileDataSource(std::string filename);
        ~TheoraFileDataSource();

        int read(void* output,int nBytes);
        void seek(uint64_t byte_index);
        std::string repr() { return mFilename; }
        uint64_t size();
        uint64_t tell();
        
        std::string getFilename() { return mFilename; }
};

class TheoraPlayerExport TheoraMemoryFileDataSource : public TheoraDataSource
{
        std::string mFilename;
        uint64_t mSize, mReadPointer;
        unsigned char* mData;
public:
        TheoraMemoryFileDataSource(unsigned char* data, long size, const std::string& filename = "memory");
        TheoraMemoryFileDataSource(std::string filename);
        ~TheoraMemoryFileDataSource();

        int read(void* output,int nBytes);
        void seek(uint64_t byte_index);
        std::string repr() { return "MEM:"+mFilename; }
        uint64_t size();
        uint64_t tell();
        std::string getFilename() { return mFilename; }
};

#endif