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 #include "wx/defs.h"
  13 #include "wx/mmedia/defs.h"
  14 #include "wx/mmedia/sndcodec.h"
  15 #include "wx/mmedia/sndbase.h"
  16
  17 //
  18 // ULAW format
  19 //
  20 class WXDLLIMPEXP_MMEDIA wxSoundFormatUlaw: public wxSoundFormatBase {
  21 public:
  22     wxSoundFormatUlaw();
  23     ~wxSoundFormatUlaw();
  24
  25     void SetSampleRate(wxUint32 srate);
  26     wxUint32 GetSampleRate() const;
  27
  28     void SetChannels(wxUint8 channels);
  29     wxUint8 GetChannels() const;
  30
  31     wxSoundFormatType GetType() const { return wxSOUND_ULAW; }
  32     wxSoundFormatBase *Clone() const;
  33
  34     wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
  35     wxUint32 GetBytesFromTime(wxUint32 time) const;
  36
  37     bool operator !=(const wxSoundFormatBase& frmt2) const;
  38
  39 protected:
  40     wxUint32 m_srate;
  41     wxUint8 m_channels;
  42 };
  43
  44 //
  45 // ULAW converter class
  46 //
  47
  48 class WXDLLIMPEXP_MMEDIA wxSoundRouterStream;
  49 class WXDLLIMPEXP_MMEDIA wxSoundStreamUlaw: public wxSoundStreamCodec {
  50 public:
  51     wxSoundStreamUlaw(wxSoundStream& sndio);
  52     ~wxSoundStreamUlaw();
  53
  54     wxSoundStream& Read(void *buffer, wxUint32 len);
  55     wxSoundStream& Write(const void *buffer, wxUint32 len);
  56
  57     bool SetSoundFormat(const wxSoundFormatBase& format);
  58
  59     wxUint32 GetBestSize() const;
  60
  61 protected:
  62     wxSoundRouterStream *m_router;
  63 };
  64
  65 #endif