contrib/include/wx/mmedia/sndulaw.h

   1 // --------------------------------------------------------------------------
   2 // Name: sndulaw.h
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // License:    wxWindows license
   8 // --------------------------------------------------------------------------
   9 #ifndef _WX_SNDULAW_H
  10 #define _WX_SNDULAW_H
  11
  12 #ifdef __GNUG__
  13 #pragma interface "sndulaw.h"
  14 #endif
  15
  16 #include "wx/defs.h"
  17 #include "wx/mmedia/defs.h"
  18 #include "wx/mmedia/sndcodec.h"
  19 #include "wx/mmedia/sndbase.h"
  20
  21 //
  22 // ULAW format
  23 //
  24 class WXDLLIMPEXP_MMEDIA wxSoundFormatUlaw: public wxSoundFormatBase {
  25 public:
  26     wxSoundFormatUlaw();
  27     ~wxSoundFormatUlaw();
  28
  29     void SetSampleRate(wxUint32 srate);
  30     wxUint32 GetSampleRate() const;
  31
  32     void SetChannels(wxUint8 channels);
  33     wxUint8 GetChannels() const;
  34
  35     wxSoundFormatType GetType() const { return wxSOUND_ULAW; }
  36     wxSoundFormatBase *Clone() const;
  37
  38     wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
  39     wxUint32 GetBytesFromTime(wxUint32 time) const;
  40
  41     bool operator !=(const wxSoundFormatBase& frmt2) const;
  42
  43 protected:
  44     wxUint32 m_srate;
  45     wxUint8 m_channels;
  46 };
  47
  48 //
  49 // ULAW converter class
  50 //
  51
  52 class WXDLLIMPEXP_MMEDIA wxSoundRouterStream;
  53 class WXDLLIMPEXP_MMEDIA wxSoundStreamUlaw: public wxSoundStreamCodec {
  54 public:
  55     wxSoundStreamUlaw(wxSoundStream& sndio);
  56     ~wxSoundStreamUlaw();
  57
  58     wxSoundStream& Read(void *buffer, wxUint32 len);
  59     wxSoundStream& Write(const void *buffer, wxUint32 len);
  60
  61     bool SetSoundFormat(const wxSoundFormatBase& format);
  62
  63     wxUint32 GetBestSize() const;
  64
  65 protected:
  66     wxSoundRouterStream *m_router;
  67 };
  68
  69 #endif