From cc82835c2b38b1552fbf631babd46a8d1f39aef7 Mon Sep 17 00:00:00 2001
From: Guilhem Lavaux <lavaux@easynet.fr>
Date: Sun, 14 Nov 1999 17:20:11 +0000
Subject: [PATCH] Fixed bug in wxSound windows driver (Recording is in
 progress: don't try it it make Windows crash completely)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4556 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 utils/wxMMedia2/lib/makefile.vc |  2 +-
 utils/wxMMedia2/lib/sndwin.cpp  | 22 +++++++++++++++-------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/utils/wxMMedia2/lib/makefile.vc b/utils/wxMMedia2/lib/makefile.vc
index 12736d67ca..28224c0016 100644
--- a/utils/wxMMedia2/lib/makefile.vc
+++ b/utils/wxMMedia2/lib/makefile.vc
@@ -18,7 +18,7 @@ THISDIR = $(MMDIR)\lib
 EXTRALIBS=$(WXDIR)\lib\glcanvas.lib
 
 LIBTARGET=$(WXDIR)\lib\mmedia2.lib
-OBJECTS = cdbase.obj cdwin.obj g711.obj g721.obj g723_24.obj \
+OBJECTS = cdbase.obj cdwin.obj g711.obj g721.obj g723_24.obj sndg72x.obj \
         g723_40.obj g72x.obj sndbase.obj sndcodec.obj sndpcm.obj \
         sndcpcm.obj sndulaw.obj sndfile.obj sndwav.obj sndaiff.obj sndwin.obj \
         vidbase.obj
diff --git a/utils/wxMMedia2/lib/sndwin.cpp b/utils/wxMMedia2/lib/sndwin.cpp
index d4b73f2370..3dfb2ec139 100644
--- a/utils/wxMMedia2/lib/sndwin.cpp
+++ b/utils/wxMMedia2/lib/sndwin.cpp
@@ -65,6 +65,9 @@ wxSoundStreamWin::wxSoundStreamWin()
   CreateSndWindow();
   SetSoundFormat(pcm);
 
+  m_internal->m_input_enabled = FALSE;
+  m_internal->m_output_enabled = FALSE;
+
   if (!OpenDevice(wxSOUND_OUTPUT))
     return;
 
@@ -83,12 +86,18 @@ wxSoundStreamWin::~wxSoundStreamWin()
 LRESULT APIENTRY _EXPORT _wxSoundHandlerWndProc(HWND hWnd, UINT message,
                  WPARAM wParam, LPARAM lParam)
 {
+  wxSoundStreamWin *sndwin;
+
+  sndwin = wxFindSoundFromHandle((WXHWND)hWnd);
+  if (!sndwin)
+    return (LRESULT)0;
+
   switch (message) {
   case MM_WOM_DONE:
-    wxFindSoundFromHandle((WXHWND)hWnd)->NotifyDoneBuffer(wParam, wxSOUND_OUTPUT);
+    sndwin->NotifyDoneBuffer(wParam, wxSOUND_OUTPUT);
     break;
   case MM_WIM_DATA:
-    wxFindSoundFromHandle((WXHWND)hWnd)->NotifyDoneBuffer(wParam, wxSOUND_INPUT);
+    sndwin->NotifyDoneBuffer(wParam, wxSOUND_INPUT);
     break;
   default:
     break;
@@ -228,16 +237,15 @@ bool wxSoundStreamWin::OpenDevice(int mode)
 // -------------------------------------------------------------------------
 void wxSoundStreamWin::CloseDevice()
 {
-  m_internal->m_output_enabled = FALSE;
-  m_internal->m_input_enabled  = FALSE;
-
   if (m_internal->m_output_enabled) {
+    m_internal->m_output_enabled = FALSE;
     waveOutReset(m_internal->m_devout);
     FreeHeaders(wxSOUND_OUTPUT);
     waveOutClose(m_internal->m_devout);
   }
 
   if (m_internal->m_input_enabled) {
+    m_internal->m_input_enabled  = FALSE;
     waveInReset(m_internal->m_devin);
     FreeHeaders(wxSOUND_INPUT);
     waveInClose(m_internal->m_devin);
@@ -549,12 +557,12 @@ wxSoundInfoHeader *wxSoundStreamWin::NextFragmentInput()
 {
   wxSoundInfoHeader *header;
 
+  m_current_frag_in = (m_current_frag_in + 1) % WXSOUND_MAX_QUEUE;
+
   header = m_headers_rec[m_current_frag_in];
   if (header->m_recording)
     WaitFor(header);
 
-  m_current_frag_in = (m_current_frag_in + 1) % WXSOUND_MAX_QUEUE;
-
   if (m_current_frag_in == m_input_frag_in)
     m_queue_filled = TRUE;