8b33ae2d5a
Completed some TODO in wxMMedia (wxSoundUlaw, ...) Reworked the PCM converted: it should be simpler to add converters now and it is cleaner. Implemented status information in wxVideoWindows but it doesn't work on my Win98SE (UNSUPPORTED_FUNCTION) Changed *ERR into *ERROR Added a TODO: we must detect the best format in wxSoundWindows git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6311 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
// --------------------------------------------------------------------------
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// Name: sndbase.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, 2000
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// CVSID: $Id$
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// --------------------------------------------------------------------------
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#ifdef __GNUG__
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#pragma implementation "sndbase.cpp"
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#endif
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#include <wx/wxprec.h>
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#include "sndbase.h"
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// ---------------------------------------------------------------------------
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// wxSoundFormatBase
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// ---------------------------------------------------------------------------
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wxSoundFormatBase::wxSoundFormatBase()
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{
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}
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wxSoundFormatBase::~wxSoundFormatBase()
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{
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}
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wxSoundFormatBase *wxSoundFormatBase::Clone() const
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{
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return NULL;
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}
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bool wxSoundFormatBase::operator!=(const wxSoundFormatBase& frmt2) const
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{
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return (GetType() != frmt2.GetType());
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}
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// ---------------------------------------------------------------------------
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// wxSoundStream
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// ---------------------------------------------------------------------------
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wxSoundStream::wxSoundStream()
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{
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int i;
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// Reset all variables to their neutral value.
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m_sndformat = NULL;
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m_handler = NULL;
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m_snderror = wxSOUND_NOERROR;
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m_lastcount = 0;
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for (i=0;i<2;i++)
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m_callback[i] = NULL;
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}
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wxSoundStream::~wxSoundStream()
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{
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if (m_sndformat)
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delete m_sndformat;
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}
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// --------------------------------------------------------------------------
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// SetSoundFormat(const wxSoundFormatBase& format) is one of the most
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// important function of the wxSoundStream class. It prepares the stream to
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// receive or send the data in a strict format. Normally, the sound stream
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// should be ready to accept any format it is asked to manage but in certain
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// cases, it really cannot: in that case it returns FALSE. To have more
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// details in the functionnalities of SetSoundFormat see
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// wxSoundRouterStream::SetSoundFormat()
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// --------------------------------------------------------------------------
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bool wxSoundStream::SetSoundFormat(const wxSoundFormatBase& format)
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{
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// delete the previous prepared format
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if (m_sndformat)
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delete m_sndformat;
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// create a new one by cloning the format passed in parameter
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m_sndformat = format.Clone();
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return TRUE;
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}
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// --------------------------------------------------------------------------
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// Register(int evt, ...) registers the callback for a specified async event.
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// Warning ! Only one callback by event is supported. It means that if you
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// call twice this function the previous registered callback is absolutely
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// ignored.
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// --------------------------------------------------------------------------
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void wxSoundStream::SetCallback(int evt, wxSoundCallback cbk, void *cdata)
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{
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int c;
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switch (evt) {
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case wxSOUND_INPUT:
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c = 0;
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break;
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case wxSOUND_OUTPUT:
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c = 1;
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break;
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default:
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return;
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}
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m_callback[c] = cbk;
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m_cdata[c] = cdata;
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}
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// --------------------------------------------------------------------------
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// OnSoundEvent(int evt) is called either when the driver is ready to receive
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// a new block to play or when the driver has a new recorded buffer. You
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// must be careful here and try not to spend a lot of time: this is a
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// real-time call. In the case, an "event handler" was specified previously,
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// it called him before everything.
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// --------------------------------------------------------------------------
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void wxSoundStream::OnSoundEvent(int evt)
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{
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int c;
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if (m_handler) {
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m_handler->OnSoundEvent(evt);
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return;
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}
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switch (evt) {
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case wxSOUND_INPUT:
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c = 0;
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break;
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case wxSOUND_OUTPUT:
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c = 1;
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break;
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default:
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return;
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}
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if (m_callback[c])
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m_callback[c](this, evt, m_cdata[c]);
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}
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