utils/wxMMedia2/lib/sndwav.h

   1 // --------------------------------------------------------------------------
   2 // Name: sndwav.h
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // --------------------------------------------------------------------------
   8 #ifndef _WX_SNDWAV_H
   9 #define _WX_SNDWAV_H
  10
  11 #ifdef __GNUG__
  12 #pragma interface "sndwav.h"
  13 #endif
  14
  15 #include <wx/defs.h>
  16 #include <wx/stream.h>
  17 #include <wx/datstrm.h>
  18 #include "sndbase.h"
  19 #include "sndcodec.h"
  20 #include "sndfile.h"
  21
  22 //
  23 // WAVE codec
  24 //
  25
  26 class wxSoundWave: public wxSoundFileStream {
  27 public:
  28     wxSoundWave(wxInputStream& stream, wxSoundStream& io_sound);
  29     wxSoundWave(wxOutputStream& stream, wxSoundStream& io_sound);
  30     ~wxSoundWave();
  31
  32     bool CanRead();
  33     wxString GetCodecName() const;
  34
  35 protected:
  36     bool PrepareToPlay();
  37     bool PrepareToRecord(wxUint32 time);
  38     bool FinishRecording();
  39     bool RepositionStream(wxUint32 position);
  40
  41     wxUint32 GetData(void *buffer, wxUint32 len);
  42     wxUint32 PutData(const void *buffer, wxUint32 len);
  43
  44     bool HandleOutputPCM(wxDataInputStream& data, wxUint16 channels,
  45                          wxUint32 sample_fq, wxUint32 byte_p_sec,
  46                          wxUint16 byte_p_spl, wxUint16 bits_p_spl);
  47     bool HandleOutputG721(wxDataInputStream& data, wxUint16 channels,
  48                           wxUint32 sample_fq, wxUint32 byte_p_sec,
  49                           wxUint16 byte_p_spl, wxUint16 bits_p_spl);
  50     wxSoundFormatBase *HandleInputPCM(wxDataOutputStream& data);
  51     wxSoundFormatBase *HandleInputG72X(wxDataOutputStream& data);
  52
  53 protected:
  54     off_t m_base_offset;
  55 };
  56
  57 #endif