utils/wxMMedia2/lib/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 <stddef.h>
  16 #include "sndcodec.h"
  17 #include "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   wxSoundFormatType GetType() const { return wxSOUND_ULAW; }
  31   wxSoundFormatBase *Clone() const;
  32
  33   wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
  34   wxUint32 GetBytesFromTime(wxUint32 time) const;
  35
  36   bool operator !=(const wxSoundFormatBase& frmt2) const;
  37
  38  protected:
  39   wxUint32 m_srate;
  40 };
  41
  42 //
  43 // ULAW converter class
  44 //
  45
  46 class WXDLLEXPORT wxSoundRouterStream;
  47 class WXDLLEXPORT wxSoundStreamUlaw: public wxSoundStreamCodec {
  48  public:
  49   wxSoundStreamUlaw(wxSoundStream& sndio);
  50   ~wxSoundStreamUlaw();
  51
  52   wxSoundStream& Read(void *buffer, wxUint32 len);
  53   wxSoundStream& Write(const void *buffer, wxUint32 len);
  54
  55   bool SetSoundFormat(const wxSoundFormatBase& format);
  56
  57   wxUint32 GetBestSize() const;
  58
  59  protected:
  60   wxSoundRouterStream *m_router;
  61 };
  62
  63 #endif