622e48cbd2
Changed some name in wxMMedia2 git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
135 lines
2.9 KiB
C++
135 lines
2.9 KiB
C++
// --------------------------------------------------------------------------
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// Name: sndulaw.cpp
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// Purpose:
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// Date: 08/11/1999
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// Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
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// CVSID: $Id$
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// --------------------------------------------------------------------------
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#ifdef __GNUG__
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#pragma implementation "sndulaw.cpp"
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#endif
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#include "sndbase.h"
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#include "sndfile.h"
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#include "sndpcm.h"
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#include "sndulaw.h"
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#include "g72x.h"
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// --------------------------------------------------------------------------
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// wxSoundFormatUlaw
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// --------------------------------------------------------------------------
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wxSoundFormatUlaw::wxSoundFormatUlaw()
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: m_srate(22050)
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{
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}
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wxSoundFormatUlaw::~wxSoundFormatUlaw()
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{
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}
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void wxSoundFormatUlaw::SetSampleRate(wxUint32 srate)
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{
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m_srate = srate;
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}
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wxUint32 wxSoundFormatUlaw::GetSampleRate() const
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{
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return m_srate;
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}
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wxSoundFormatBase *wxSoundFormatUlaw::Clone() const
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{
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wxSoundFormatUlaw *ulaw = new wxSoundFormatUlaw();
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ulaw->m_srate = m_srate;
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return ulaw;
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}
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wxUint32 wxSoundFormatUlaw::GetTimeFromBytes(wxUint32 bytes) const
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{
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return (bytes / m_srate);
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}
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wxUint32 wxSoundFormatUlaw::GetBytesFromTime(wxUint32 time) const
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{
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return time * m_srate;
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}
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bool wxSoundFormatUlaw::operator !=(const wxSoundFormatBase& frmt2) const
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{
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wxSoundFormatUlaw *ulaw = (wxSoundFormatUlaw *)&frmt2;
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if (frmt2.GetType() != wxSOUND_ULAW)
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return TRUE;
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return (ulaw->m_srate != m_srate);
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}
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// --------------------------------------------------------------------------
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// wxSoundStreamUlaw
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// --------------------------------------------------------------------------
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wxSoundStreamUlaw::wxSoundStreamUlaw(wxSoundStream& sndio)
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: wxSoundStreamCodec(sndio)
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{
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// PCM converter
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m_router = new wxSoundRouterStream(sndio);
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}
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wxSoundStreamUlaw::~wxSoundStreamUlaw()
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{
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delete m_router;
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}
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wxSoundStream& wxSoundStreamUlaw::Read(void *buffer, size_t len)
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{
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return *this;
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}
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wxSoundStream& wxSoundStreamUlaw::Write(const void *buffer, size_t len)
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{
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wxUint16 *old_linear;
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register wxUint16 *linear_buffer;
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register const wxUint8 *ulaw_buffer;
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register size_t countdown = len;
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old_linear = linear_buffer = new wxUint16[len*2];
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ulaw_buffer = (const wxUint8 *)buffer;
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while (countdown != 0) {
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*linear_buffer++ = ulaw2linear(*ulaw_buffer++);
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countdown--;
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}
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m_router->Write(old_linear, len * 2);
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delete[] old_linear;
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return *m_router;
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}
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bool wxSoundStreamUlaw::SetSoundFormat(const wxSoundFormatBase& format)
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{
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if (format.GetType() != wxSOUND_ULAW) {
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m_snderror = wxSOUND_INVFRMT;
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return FALSE;
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}
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wxSoundFormatPcm pcm;
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wxSoundFormatUlaw *ulaw;
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wxSoundStreamCodec::SetSoundFormat(format);
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ulaw = (wxSoundFormatUlaw *)m_sndformat;
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pcm.SetSampleRate(ulaw->GetSampleRate());
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pcm.SetBPS(16);
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pcm.SetChannels(1);
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pcm.Signed(TRUE);
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pcm.SetOrder(wxBYTE_ORDER);
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m_router->SetSoundFormat(pcm);
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return TRUE;
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}
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