contrib/include/wx/mmedia/sndmsad.h

   1 // --------------------------------------------------------------------------
   2 // Name: sndmsad(pcm).h
   3 // Purpose: MS ADPCM codec
   4 // Date: 25/02/2000
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 2000
   6 // CVSID: $Id$
   7 // --------------------------------------------------------------------------
   8 #ifndef _WX_SNDULAW_H
   9 #define _WX_SNDULAW_H
  10
  11 #ifdef __GNUG__
  12 #pragma interface "sndmsad.h"
  13 #endif
  14
  15 #include "wx/defs.h"
  16 #include "wx/dynarray.h"
  17 #include "wx/mmedia/sndcodec.h"
  18 #include "wx/mmedia/sndbase.h"
  19
  20 WX_DEFINE_EXPORTED_ARRAY(wxUint16, wxMSAdpcmCoeffs);
  21
  22 //
  23 // MSADPCM format
  24 //
  25 class WXDLLEXPORT wxSoundFormatMSAdpcm: public wxSoundFormatBase {
  26  public:
  27   wxSoundFormatMSAdpcm();
  28   ~wxSoundFormatMSAdpcm();
  29
  30   void SetSampleRate(wxUint32 srate);
  31   wxUint32 GetSampleRate() const;
  32
  33   void SetSamplesBlock(wxUint16 sampblock);
  34   wxUint16 GetSamplesBlock() const;
  35
  36   void SetCoefs(wxMSAdpcmCoefs& coefs);
  37   wxMSAdpcmCoefs& GetCoefs() const;
  38
  39   wxSoundFormatType GetType() const { return wxSOUND_ULAW; }
  40   wxSoundFormatBase *Clone() const;
  41
  42   wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
  43   wxUint32 GetBytesFromTime(wxUint32 time) const;
  44
  45   bool operator !=(const wxSoundFormatBase& frmt2) const;
  46
  47  protected:
  48   wxUint32 m_srate;
  49   wxMSAdpcmCoefs *m_coefs;
  50 };
  51
  52 //
  53 // MS ADPCM converter class
  54 //
  55 class WXDLLEXPORT wxSoundRouterStream;
  56 class WXDLLEXPORT wxSoundStreamAdpcm: public wxSoundStreamCodec {
  57 public:
  58     wxSoundStreamAdpcm(wxSoundStream& sndio);
  59     ~wxSoundStreamAdpcm();
  60
  61     wxSoundStream& Read(void *buffer, wxUint32 len);
  62     wxSoundStream& Write(const void *buffer, wxUint32 len);
  63
  64     bool SetSoundFormat(const wxSoundFormatBase& format);
  65
  66     wxUint32 GetBestSize() const;
  67
  68 protected:
  69     wxSoundRouterStream *m_router;
  70 };
  71
  72 #endif