Added some missing methods and a constructor.

svn-id: r8540

3 files changed, 24 insertions, 0 deletions

diff --git a/backends/dc/audio.cpp b/backends/dc/audio.cpp
index 526d8cbbef..23af162e9a 100644
--- a/backends/dc/audio.cpp
+++ b/backends/dc/audio.cpp
@@ -49,11 +49,20 @@ bool OSystem_Dreamcast::set_sound_proc(SoundProc *proc, void *param, SoundFormat
   return true;
 }
 
+void OSystem_Dreamcast::clear_sound_proc()
+{
+  _sound_proc = NULL;
+  _sound_proc_param = NULL;
+}
+
 void OSystem_Dreamcast::checkSound()
 {
   int n;
   int curr_ring_buffer_samples;
 
+  if(!_sound_proc)
+    return;
+
   if(read_sound_int(&SOUNDSTATUS->mode) != MODE_PLAY)
     start_sound();
 
diff --git a/backends/dc/dc.h b/backends/dc/dc.h
index 56cdb8dd00..775c33b54f 100644
--- a/backends/dc/dc.h
+++ b/backends/dc/dc.h
@@ -6,12 +6,16 @@
 class OSystem_Dreamcast : public OSystem {
 
  public:
+  OSystem_Dreamcast();
+
   // Set colors of the palette
   void set_palette(const byte *colors, uint start, uint num);
 
   // Set the size of the video bitmap.
   // Typically, 320x200
   void init_size(uint w, uint h);
+  int16 get_height() { return _screen_h; }
+  int16 get_width() { return _screen_w; }
 
   // Draw a bitmap to screen.
   // The screen will not be updated to reflect the new bitmap
@@ -49,6 +53,7 @@ class OSystem_Dreamcast : public OSystem {
   
   // Set function that generates samples 
   bool set_sound_proc(SoundProc *proc, void *param, SoundFormat format);
+  void clear_sound_proc();
 		
   // Poll cdrom status
   // Returns true if cd audio is playing
diff --git a/backends/dc/dcmain.cpp b/backends/dc/dcmain.cpp
index c83271b294..5832167ac7 100644
--- a/backends/dc/dcmain.cpp
+++ b/backends/dc/dcmain.cpp
@@ -42,6 +42,16 @@ OSystem *OSystem_Dreamcast::create() {
 	return syst;
 }
 
+OSystem_Dreamcast::OSystem_Dreamcast()
+  : screen(NULL), mouse(NULL), overlay(NULL), _ms_buf(NULL),
+    _sound_proc(NULL), _timer_active(false)
+{
+  memset(screen_tx, 0, sizeof(screen_tx));
+  memset(mouse_tx, 0, sizeof(screen_tx));
+  memset(ovl_tx, 0, sizeof(screen_tx));
+}
+
+
 /* CD Audio */
 static bool find_track(int track, int &first_sec, int &last_sec)
 {