Major changes in wxVidXANIM (support for output filtering)

Several API addings
Added process.cpp, process.h and utilsunx.cpp in wxMMedia directory
They should be moved to src/unix, src/common and include/wx to use them


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6280 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxMMedia2/process.cpp

@@ -0,0 +1,85 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        process.cpp
+// Purpose:     Process termination classes
+// Author:      Guilhem Lavaux
+// Modified by: Vadim Zeitlin to check error codes, added Detach() method
+// Created:     24/06/98
+// RCS-ID:      $Id$
+// Copyright:   (c) Guilhem Lavaux
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+    #pragma implementation "process.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/defs.h"
+#endif
+
+#include "wx/process.h"
+
+IMPLEMENT_DYNAMIC_CLASS(wxProcess, wxEvtHandler)
+IMPLEMENT_DYNAMIC_CLASS(wxProcessEvent, wxEvent)
+
+wxProcess::wxProcess(wxEvtHandler *parent, bool needPipe, int id)
+{
+    if (parent)
+        SetNextHandler(parent);
+
+    m_id         = id;
+    m_needPipe   = needPipe;
+    m_in_stream  = NULL;
+    m_out_stream = NULL;
+}
+
+wxProcess::~wxProcess()
+{
+    if (m_in_stream)
+      delete m_in_stream;
+    if (m_out_stream)
+      delete m_out_stream;
+}
+
+void wxProcess::OnTerminate(int pid, int status)
+{
+    wxProcessEvent event(m_id, pid, status);
+
+    if ( !ProcessEvent(event) )
+        delete this;
+    //else: the object which processed the event is responsible for deleting
+    //      us!
+}
+
+void wxProcess::Detach()
+{
+    SetNextHandler(NULL);
+}
+
+void wxProcess::SetPipeStreams(wxInputStream *in_stream, wxOutputStream *out_stream)
+{
+    m_in_stream  = in_stream;
+    m_out_stream = out_stream;
+}
+
+wxInputStream *wxProcess::GetInputStream() const
+{
+    return m_in_stream;
+}
+
+wxOutputStream *wxProcess::GetOutputStream() const
+{
+    return m_out_stream;
+}
+
+bool wxProcess::NeedPipe() const
+{
+    return m_needPipe;
+}