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