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