utils/wxMMedia2/lib/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 // --------------------------------------------------------------------------
   8 #ifndef _WX_SNDWIN_H
   9 #define _WX_SNDWIN_H
  10
  11 #include <wx/wxprec.h>
  12 #include "sndbase.h"
  13
  14 typedef struct _wxSoundInternal wxSoundInternal;
  15 typedef struct _wxSoundInfoHeader wxSoundInfoHeader;
  16
  17 class WXDLLEXPORT wxSoundStreamWin : public wxSoundStream {
  18  public:
  19   wxSoundStreamWin();
  20   ~wxSoundStreamWin();
  21
  22   wxSoundStream& Write(const void *buffer, wxUint32 len);
  23   wxSoundStream& Read(void *buffer, wxUint32 len);
  24
  25   bool SetSoundFormat(wxSoundFormatBase& base);
  26
  27   bool StartProduction(int evt);
  28   bool StopProduction();
  29
  30   bool QueueFilled() const;
  31
  32   // Internal but defined as public
  33   void NotifyDoneBuffer(wxUint32 dev_handle, int flag);
  34
  35   wxUint32 GetBestSize() const { return 4096; }
  36
  37  protected:
  38   wxSoundInternal *m_internal;
  39   wxUint32 m_current_frag_in, m_current_frag_out;
  40   wxUint32 m_input_frag_in, m_output_frag_out;
  41   wxSoundInfoHeader **m_headers_play, **m_headers_rec;
  42
  43   bool m_production_started, m_queue_filled, m_waiting_for;
  44
  45  protected:
  46   void CreateSndWindow();
  47   void DestroySndWindow();
  48   bool OpenDevice(int mode);
  49   void CloseDevice();
  50
  51   wxSoundInfoHeader *AllocHeader(int mode);
  52   void FreeHeader(wxSoundInfoHeader *header, int mode);
  53   bool AllocHeaders(int mode);
  54   void FreeHeaders(int mode);
  55
  56   void WaitFor(wxSoundInfoHeader *info);
  57   bool AddToQueue(wxSoundInfoHeader *info);
  58   void ClearHeader(wxSoundInfoHeader *info);
  59
  60   wxSoundInfoHeader *NextFragmentOutput();
  61   wxSoundInfoHeader *NextFragmentInput();
  62 };
  63
  64 #endif