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, size_t len);
  29   wxSoundStream& Write(const void *buffer, size_t len);
  30
  31   bool SetSoundFormat(const wxSoundFormatBase& format);
  32
  33   bool StartProduction(int evt);
  34   bool StopProduction();
  35
  36  protected:
  37   wxSoundStream *m_router;
  38 };
  39
  40 typedef enum {
  41  wxSOUND_FILE_STOPPED,
  42  wxSOUND_FILE_PAUSED,
  43  wxSOUND_FILE_PLAYING,
  44  wxSOUND_FILE_RECORDING
  45 } wxSoundFileState;
  46
  47 //
  48 // Base class for file coders/decoders
  49 //
  50
  51 class wxSoundFileStream: public wxSoundStream {
  52  public:
  53   wxSoundFileStream(wxInputStream& stream, wxSoundStream& io_sound);
  54   wxSoundFileStream(wxOutputStream& stream, wxSoundStream& io_sound);
  55   ~wxSoundFileStream();
  56
  57   bool Play();
  58   bool Record(unsigned long time);
  59   bool Stop();
  60   bool Pause();
  61   bool Resume();
  62
  63   bool IsStopped() const { return m_state == wxSOUND_FILE_STOPPED; }
  64
  65   bool StartProduction(int evt);
  66   bool StopProduction();
  67
  68   unsigned long GetLength() const;
  69
  70   wxSoundStream& Read(void *buffer, size_t len);
  71   wxSoundStream& Write(const void *buffer, size_t len);
  72
  73   void SetDuplexMode(bool duplex);
  74
  75   bool SetSoundFormat(const wxSoundFormatBase& format);
  76
  77   virtual bool CanRead() { return TRUE; }
  78
  79  protected:
  80   wxSoundRouterStream m_codec;
  81   wxSoundStream *m_sndio;
  82   wxInputStream *m_input;
  83   wxOutputStream *m_output;
  84
  85   wxSoundFileState m_state, m_oldstate;
  86   wxUint32 m_len;
  87
  88  protected:
  89   virtual bool PrepareToPlay() = 0;
  90   virtual bool PrepareToRecord(unsigned long time) = 0;
  91   virtual bool FinishRecording() = 0;
  92
  93   virtual size_t GetData(void *buffer, size_t len) = 0;
  94   virtual size_t PutData(const void *buffer, size_t len) = 0;
  95
  96   void OnSoundEvent(int evt);
  97 };
  98
  99 #endif