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