contrib/src/mmedia/sndpcm.cpp

   1 // --------------------------------------------------------------------------
   2 // Name: sndpcm.cpp
   3 // Purpose:
   4 // Date: 08/11/1999
   5 // Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
   6 // CVSID: $Id$
   7 // wxWindows licence
   8 // --------------------------------------------------------------------------
   9 #ifdef __GNUG__
  10 #pragma implementation "sndpcm.cpp"
  11 #endif
  12
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/defs.h"
  17 #endif
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #include "wx/mmedia/sndbase.h"
  24 #include "wx/mmedia/sndpcm.h"
  25
  26 wxSoundFormatPcm::wxSoundFormatPcm(wxUint32 srate, wxUint8 bps,
  27                                    wxUint16 nchannels, bool sign,
  28                                    int order)
  29  : m_srate(srate), m_bps(bps), m_nchan(nchannels), m_order(order),
  30    m_signed(sign)
  31 {
  32 }
  33
  34 wxSoundFormatPcm::~wxSoundFormatPcm()
  35 {
  36 }
  37
  38 void wxSoundFormatPcm::SetSampleRate(wxUint32 srate)
  39 {
  40   m_srate = srate;
  41 }
  42
  43 void wxSoundFormatPcm::SetBPS(wxUint8 bps)
  44 {
  45   m_bps = bps;
  46 }
  47
  48 void wxSoundFormatPcm::SetChannels(wxUint16 nchannels)
  49 {
  50   m_nchan = nchannels;
  51 }
  52
  53 void wxSoundFormatPcm::SetOrder(int order)
  54 {
  55   m_order = order;
  56 }
  57
  58 void wxSoundFormatPcm::Signed(bool sign)
  59 {
  60   m_signed = sign;
  61 }
  62
  63 wxSoundFormatBase *wxSoundFormatPcm::Clone() const
  64 {
  65   wxSoundFormatPcm *new_pcm;
  66
  67   new_pcm = new wxSoundFormatPcm();
  68   new_pcm->m_srate = m_srate;
  69   new_pcm->m_bps   = m_bps;
  70   new_pcm->m_nchan = m_nchan;
  71   new_pcm->m_order = m_order;
  72   new_pcm->m_signed= m_signed;
  73
  74   return new_pcm;
  75 }
  76
  77 wxUint32 wxSoundFormatPcm::GetTimeFromBytes(wxUint32 bytes) const
  78 {
  79   return (bytes / (m_srate * (m_bps / 8) * m_nchan));
  80 }
  81
  82 wxUint32 wxSoundFormatPcm::GetBytesFromTime(wxUint32 time) const
  83 {
  84   return (time * (m_srate * (m_bps / 8) * m_nchan));
  85 }
  86
  87 bool wxSoundFormatPcm::operator!=(const wxSoundFormatBase& format) const
  88 {
  89   wxSoundFormatPcm *format2 = (wxSoundFormatPcm *)&format;
  90
  91   if (format.GetType() != wxSOUND_PCM)
  92     return true;
  93
  94   return ( (m_srate != format2->m_srate) ||
  95            (m_bps != format2->m_bps) ||
  96            (m_nchan != format2->m_nchan) ||
  97            (m_order != format2->m_order) ||
  98            (m_signed != format2->m_signed) );
  99 }