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