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[wxWidgets.git] / utils / wxMMedia2 / lib / sndwav.h

// --------------------------------------------------------------------------
// Name: sndwav.h
// Purpose:
// Date: 08/11/1999
// Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
// CVSID: $Id$
// --------------------------------------------------------------------------
#ifndef _WX_SNDWAV_H
#define _WX_SNDWAV_H

#ifdef __GNUG__
#pragma interface "sndwav.h"
#endif

#include <wx/defs.h>
#include <wx/stream.h>
#include <wx/datstrm.h>
#include "sndbase.h"
#include "sndcodec.h"
#include "sndfile.h"

//
// WAVE codec
//

class wxSoundWave: public wxSoundFileStream {
public:
    wxSoundWave(wxInputStream& stream, wxSoundStream& io_sound);
    wxSoundWave(wxOutputStream& stream, wxSoundStream& io_sound);
    ~wxSoundWave();
    
    bool CanRead();
    wxString GetCodecName() const;
    
protected:
    bool PrepareToPlay(); 
    bool PrepareToRecord(wxUint32 time);
    bool FinishRecording();
    bool RepositionStream(wxUint32 position);
    
    wxUint32 GetData(void *buffer, wxUint32 len);
    wxUint32 PutData(const void *buffer, wxUint32 len);
    
    bool HandleOutputPCM(wxDataInputStream& data, wxUint16 channels,
                         wxUint32 sample_fq, wxUint32 byte_p_sec,
                         wxUint16 byte_p_spl, wxUint16 bits_p_spl);
    bool HandleOutputG721(wxDataInputStream& data, wxUint16 channels,
                          wxUint32 sample_fq, wxUint32 byte_p_sec,
                          wxUint16 byte_p_spl, wxUint16 bits_p_spl);
    wxSoundFormatBase *HandleInputPCM(wxDataOutputStream& data);
    wxSoundFormatBase *HandleInputG72X(wxDataOutputStream& data);

protected:
    off_t m_base_offset;
};

#endif