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