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 "sndcodec.h"
  16 #include "sndbase.h"
  17
  18 //
  19 // ULAW format
  20 //
  21 class WXDLLEXPORT wxSoundFormatUlaw: public wxSoundFormatBase {
  22  public:
  23   wxSoundFormatUlaw();
  24   ~wxSoundFormatUlaw();
  25
  26   void SetSampleRate(wxUint32 srate);
  27   wxUint32 GetSampleRate() const;
  28
  29   void SetChannels(wxUint8 channels);
  30   wxUint8 GetChannels() const;
  31
  32   wxSoundFormatType GetType() const { return wxSOUND_ULAW; }
  33   wxSoundFormatBase *Clone() const;
  34
  35   wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
  36   wxUint32 GetBytesFromTime(wxUint32 time) const;
  37
  38   bool operator !=(const wxSoundFormatBase& frmt2) const;
  39
  40  protected:
  41   wxUint32 m_srate;
  42 };
  43
  44 //
  45 // ULAW converter class
  46 //
  47
  48 class WXDLLEXPORT wxSoundRouterStream;
  49 class WXDLLEXPORT 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