utils/wxMMedia2/lib/sndbase.cpp

   1 // --------------------------------------------------------------------------
   2 // Name: sndbase.cpp
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // --------------------------------------------------------------------------
   8 #ifdef __GNUG__
   9 #pragma implementation "sndbase.cpp"
  10 #endif
  11
  12 #include <wx/wxprec.h>
  13 #include "sndbase.h"
  14
  15
  16 // ---------------------------------------------------------------------------
  17 // wxSoundFormatBase
  18 // ---------------------------------------------------------------------------
  19
  20 wxSoundFormatBase::wxSoundFormatBase()
  21 {
  22 }
  23
  24 wxSoundFormatBase::~wxSoundFormatBase()
  25 {
  26 }
  27
  28 wxSoundFormatBase *wxSoundFormatBase::Clone() const
  29 {
  30   return NULL;
  31 }
  32
  33 bool wxSoundFormatBase::operator!=(const wxSoundFormatBase& frmt2) const
  34 {
  35   return (GetType() != frmt2.GetType());
  36 }
  37
  38 // ---------------------------------------------------------------------------
  39 // wxSoundStream
  40 // ---------------------------------------------------------------------------
  41
  42 wxSoundStream::wxSoundStream()
  43 {
  44   int i;
  45
  46   m_sndformat = NULL;
  47   m_handler = NULL;
  48   m_snderror = wxSOUND_NOERR;
  49   m_lastcount = 0;
  50   for (i=0;i<2;i++)
  51     m_callback[i] = NULL;
  52 }
  53
  54 wxSoundStream::~wxSoundStream()
  55 {
  56   if (m_sndformat)
  57     delete m_sndformat;
  58 }
  59
  60 // SetSoundFormat returns TRUE when the format can be handled.
  61 bool wxSoundStream::SetSoundFormat(const wxSoundFormatBase& format)
  62 {
  63   if (m_sndformat)
  64     delete m_sndformat;
  65
  66   m_sndformat = format.Clone();
  67   return TRUE;
  68 }
  69
  70 // Register a callback for a specified async event.
  71 void wxSoundStream::Register(int evt, wxSoundCallback cbk, char *cdata)
  72 {
  73   int c;
  74
  75   switch (evt) {
  76   case wxSOUND_INPUT:
  77     c = 0;
  78     break;
  79   case wxSOUND_OUTPUT:
  80     c = 1;
  81     break;
  82   default:
  83     return;
  84   }
  85   m_callback[c] = cbk;
  86   m_cdata[c] = cdata;
  87 }
  88
  89 void wxSoundStream::OnSoundEvent(int evt)
  90 {
  91   int c;
  92
  93   if (m_handler) {
  94     m_handler->OnSoundEvent(evt);
  95     return;
  96   }
  97
  98   switch (evt) {
  99   case wxSOUND_INPUT:
 100     c = 0;
 101     break;
 102   case wxSOUND_OUTPUT:
 103     c = 1;
 104     break;
 105   default:
 106     return;
 107   }
 108   if (m_callback[c])
 109     m_callback[c](this, evt, m_cdata[c]);
 110 }