utils/wxMMedia/mmfile.h

   1 // /////////////////////////////////////////////////////////////////////////////
   2 // Name:       mmfile.h
   3 // Purpose:    wxMMedia
   4 // Author:     Guilhem Lavaux
   5 // Created:    1997
   6 // Updated:    1998
   7 // Copyright:  (C) 1997, 1998, Guilhem Lavaux
   8 // License:    wxWindows license
   9 // /////////////////////////////////////////////////////////////////////////////
  10 #ifndef __MMD_file_H__
  11 #define __MMD_file_H__
  12
  13 #ifdef __GNUG__
  14 #pragma interface
  15 #endif
  16
  17 #ifdef WX_PRECOMP
  18 #include "wx_prec.h"
  19 #else
  20 #include "wx/wx.h"
  21 #endif
  22 #include "wx/string.h"
  23 #include "wx/stream.h"
  24 #include "mmtype.h"
  25
  26 ///
  27 typedef enum {
  28   wxMMFILE_NOERROR,
  29   wxMMFILE_INVALID,
  30   wxMMFILE_EOF
  31 } ///
  32  wxMMFileError;
  33
  34 typedef struct {
  35   wxInt8 hours;
  36   wxUint8 minutes, seconds;
  37 } wxMMtime;
  38
  39 /// Common base class for multimedia file.
  40 class wxMMediaFile {
  41 public:
  42   wxMMediaFile();
  43   ///
  44   wxMMediaFile(wxInputStream& is, bool preload, bool seekable);
  45   ///
  46   wxMMediaFile(wxOutputStream& is, bool seekable);
  47   ///
  48   wxMMediaFile(const wxString& fname);
  49   ///
  50   virtual ~wxMMediaFile();
  51
  52   ///
  53   wxInputStream *GetIRawData();
  54   wxOutputStream *GetORawData();
  55   ///
  56   wxString GetCurrentFile();
  57
  58   ///
  59   virtual void SetFile(wxInputStream& is,
  60                        bool preload = FALSE, bool seekable = FALSE);
  61   ///
  62   virtual void SetFile(wxOutputStream& is, bool seekable = FALSE);
  63   ///
  64   void SetFile(const wxString& fname);
  65
  66   ///
  67   wxMMFileError GetFileError() const { return m_mmerror; }
  68   ///
  69   virtual wxMMtime GetLength();
  70   ///
  71   virtual wxMMtime GetPosition();
  72   ///
  73   virtual bool StartPlay() = 0;
  74   ///
  75   virtual void StopPlay() = 0;
  76 protected:
  77   ///
  78   wxMMFileError m_mmerror;
  79   ///
  80   wxInputStream *m_istream, *m_i_temp;
  81   ///
  82   wxOutputStream *m_ostream, *m_o_temp;
  83   ///
  84   wxString m_tmpfname, m_mfname;
  85   ///
  86   bool m_seekable;
  87
  88   ///
  89   void CacheIO();
  90   ///
  91   void CleanUpPrevious();
  92 };
  93
  94 #endif