utils/wxMMedia2/lib/sndfile.h

   1 // --------------------------------------------------------------------------
   2 // Name: sndfile.h
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // --------------------------------------------------------------------------
   8 #ifndef _WX_SNDFILE_H
   9 #define _WX_SNDFILE_H
  10
  11 #include <wx/defs.h>
  12 #include <wx/stream.h>
  13 #include <stdlib.h>
  14 #include "sndbase.h"
  15 #include "sndcodec.h"
  16
  17 #define wxSOUND_INFINITE_TIME ((unsigned long)-1)
  18
  19 //
  20 // Codec router class
  21 //
  22
  23 class WXDLLEXPORT wxSoundRouterStream: public wxSoundStreamCodec {
  24  public:
  25   wxSoundRouterStream(wxSoundStream& sndio);
  26   ~wxSoundRouterStream();
  27
  28   wxSoundStream& Read(void *buffer, wxUint32 len);
  29   wxSoundStream& Write(const void *buffer, wxUint32 len);
  30
  31   bool SetSoundFormat(const wxSoundFormatBase& format);
  32
  33   bool StartProduction(int evt);
  34   bool StopProduction();
  35
  36   wxUint32 GetBestSize() const;
  37
  38  protected:
  39   wxSoundStream *m_router;
  40 };
  41
  42 typedef enum {
  43  wxSOUND_FILE_STOPPED,
  44  wxSOUND_FILE_PAUSED,
  45  wxSOUND_FILE_PLAYING,
  46  wxSOUND_FILE_RECORDING
  47 } wxSoundFileState;
  48
  49 //
  50 // Base class for file coders/decoders
  51 //
  52
  53 class wxSoundFileStream: public wxSoundStream {
  54  public:
  55   wxSoundFileStream(wxInputStream& stream, wxSoundStream& io_sound);
  56   wxSoundFileStream(wxOutputStream& stream, wxSoundStream& io_sound);
  57   ~wxSoundFileStream();
  58
  59   bool Play();
  60   bool Record(unsigned long time);
  61   bool Stop();
  62   bool Pause();
  63   bool Resume();
  64
  65   bool IsStopped() const { return m_state == wxSOUND_FILE_STOPPED; }
  66
  67   bool StartProduction(int evt);
  68   bool StopProduction();
  69
  70   wxUint32 GetLength();
  71   wxUint32 GetPosition();
  72
  73   wxSoundStream& Read(void *buffer, wxUint32 len);
  74   wxSoundStream& Write(const void *buffer, wxUint32 len);
  75
  76   void SetDuplexMode(bool duplex);
  77
  78   bool SetSoundFormat(const wxSoundFormatBase& format);
  79
  80   virtual bool CanRead() { return FALSE; }
  81
  82  protected:
  83   wxSoundRouterStream m_codec;
  84   wxSoundStream *m_sndio;
  85   wxInputStream *m_input;
  86   wxOutputStream *m_output;
  87
  88   wxSoundFileState m_state, m_oldstate;
  89   wxUint32 m_length, m_bytes_left;
  90   bool m_prepared;
  91
  92  protected:
  93   virtual bool PrepareToPlay() = 0;
  94   virtual bool PrepareToRecord(unsigned long time) = 0;
  95   virtual bool FinishRecording() = 0;
  96   void FinishPreparation(wxUint32 len);
  97
  98   virtual wxUint32 GetData(void *buffer, wxUint32 len) = 0;
  99   virtual wxUint32 PutData(const void *buffer, wxUint32 len) = 0;
 100
 101   void OnSoundEvent(int evt);
 102 };
 103
 104 #endif