MP3FromPCM.hh

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/*
 *  Copyright (C) Massimo Cora' 2006 <maxcvs@email.it>
 *
 *  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 Library 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 _MP3FROMPCM_HH_
#define _MP3FROMPCM_HH_

#ifndef _FRAMED_FILTER_HH
#include "FramedFilter.hh"
#endif


#include "OStreamAudioEncoder.hh"

#define AUDIO_BLOCK_SIZE 4096

class MP3FromPCM : public FramedFilter
{
public:
        static MP3FromPCM* createNew( UsageEnvironment& env, FramedSource *audio_source );

        virtual ~MP3FromPCM ();
protected:
        MP3FromPCM( UsageEnvironment& env, FramedSource *audio_source );

private:                // functions
        virtual void doGetNextFrame();

        static void afterGettingFrame(void* clientData, unsigned frameSize,
                                unsigned numTruncatedBytes,
                                struct timeval presentationTime,
                                unsigned durationInMicroseconds);

        void afterGettingFrame1(unsigned frameSize,
                          unsigned numTruncatedBytes,
                          struct timeval presentationTime,
                          unsigned durationInMicroseconds);

        char const* MIMEtype() const;

private:                // data
        bool _initialized;

        OStreamAudioEncoder* _audio_encoder;
        
        FramedSource * _audio_source;

        unsigned char* _input_buffer;
        unsigned int _input_buffer_size;
};

#endif /* _MP3FROMPCM_HH_ */

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