contrib/include/wx/mmedia/sndwin.h

   1 // --------------------------------------------------------------------------
   2 // Name: sndwin.h
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // License:    wxWindows license
   8 // --------------------------------------------------------------------------
   9 #ifndef _WX_SNDWIN_H
  10 #define _WX_SNDWIN_H
  11
  12 #include "wx/defs.h"
  13 #include "wx/mmedia/defs.h"
  14 #include "wx/mmedia/sndbase.h"
  15
  16 typedef struct _wxSoundInternal wxSoundInternal;
  17 typedef struct _wxSoundInfoHeader wxSoundInfoHeader;
  18
  19 // class WXDLLIMPEXP_MMEDIA wxSoundInternal;
  20 class WXDLLIMPEXP_MMEDIA wxSoundStreamWin : public wxSoundStream {
  21  public:
  22   wxSoundStreamWin();
  23   ~wxSoundStreamWin();
  24
  25   wxSoundStream& Write(const void *buffer, wxUint32 len);
  26   wxSoundStream& Read(void *buffer, wxUint32 len);
  27
  28   bool SetSoundFormat(const wxSoundFormatBase& base);
  29
  30   bool StartProduction(int evt);
  31   bool StopProduction();
  32
  33   bool QueueFilled() const;
  34
  35   // Internal but defined as public
  36   void NotifyDoneBuffer(wxUint32 dev_handle, int flag);
  37
  38   wxUint32 GetBestSize() const { return 4096; }
  39
  40  protected:
  41   wxSoundInternal *m_internal;
  42   wxUint32 m_current_frag_in, m_current_frag_out;
  43   wxUint32 m_input_frag_in, m_output_frag_out;
  44   wxSoundInfoHeader **m_headers_play, **m_headers_rec;
  45
  46   bool m_production_started, m_queue_filled, m_waiting_for;
  47
  48  protected:
  49   void CreateSndWindow();
  50   void DestroySndWindow();
  51   bool OpenDevice(int mode);
  52   void CloseDevice();
  53
  54   wxSoundInfoHeader *AllocHeader(int mode);
  55   void FreeHeader(wxSoundInfoHeader *header, int mode);
  56   bool AllocHeaders(int mode);
  57   void FreeHeaders(int mode);
  58
  59   void WaitFor(wxSoundInfoHeader *info);
  60   bool AddToQueue(wxSoundInfoHeader *info);
  61   void ClearHeader(wxSoundInfoHeader *info);
  62
  63   wxSoundInfoHeader *NextFragmentOutput();
  64   wxSoundInfoHeader *NextFragmentInput();
  65 };
  66
  67 #endif