oggdecoder.h

Idź do dokumentacji tego pliku.

/***************************************************************************
 *   Copyright (C) 2005 by Kamil Pawlowski   *
 *   kamilpe@gmail.com   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef _OGGDECODER_H_
#define _OGGDECODER_H_

#define FILE_READ_BUFFER        4096

#define AUDIO_TEMP_BUFFER       4096

#include <fstream>
#include <iostream>
#include <SDL.h>
#include <SDL_audio.h>
#include <ogg/ogg.h>
#include "audiobuffer.h"
#include "codec_base.h"
#include "codec_theora.h"

using namespace std;

class CStreamReader
{
        public:
                virtual void read(char *buffer,  int len) = 0;
};

class CFileStreamReader : public CStreamReader
{
        public:
                virtual void read(char *buffer, int len);

                CFileStreamReader(char *filename);
                CFileStreamReader();
                ~CFileStreamReader();

                void open(char *filename);
                void close();
        private:
                ifstream stream;
                int file_is_open;
};


class COggDecoder
{
        public:
                COggDecoder(CStreamReader *data_stream);

                void InitStreams();

                int Decode();

                int HasData();

        private:
                ogg_sync_state  ogg_state;
                CStreamReader   *data_stream;
        protected:
                unsigned char   buffer[AUDIO_TEMP_BUFFER];
                int             buffer_len;
                yuv_buffer      yuv;
                CVideoCodec     *video_codec;
                CAudioCodec     *audio_codec;
                int             play_video;
                int             play_audio;

                virtual int making_video_buffer() = 0;
                virtual int making_audio_buffer() = 0;
                
};

#endif

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