fbaccel: use the same blit-limiting hack on spark and azbox

TODO: test on other architectures, simplify code

src/driver/fbaccel.cpp

@@ -244,6 +244,8 @@ CFbAccel::CFbAccel(CFrameBuffer *_fb)
 		bpafd = -1;
 		return;
 	}
+#endif
+#if HAVE_SPARK_HARDWARE || HAVE_AZBOX_HARDWARE
 	OpenThreads::Thread::start();
 #endif
 
@@ -271,13 +273,15 @@ CFbAccel::CFbAccel(CFrameBuffer *_fb)
 
 CFbAccel::~CFbAccel()
 {
-#if HAVE_SPARK_HARDWARE
+#if HAVE_SPARK_HARDWARE || HAVE_AZBOX_HARDWARE
 	if (blit_thread)
 	{
 		blit_thread = false;
 		blit(); /* wakes up the thread */
 		OpenThreads::Thread::join();
 	}
+#endif
+#if HAVE_SPARK_HARDWARE
 	if (backbuffer)
 	{
 		fprintf(stderr, "CFbAccel: unmap backbuffer\n");
@@ -722,7 +726,6 @@ void CFbAccel::setupGXA()
 }
 #endif
 
-#if HAVE_SPARK_HARDWARE
 #define BLIT_INTERVAL 40
 void CFbAccel::run()
 {
@@ -763,6 +766,7 @@ void CFbAccel::blit()
 	blit_mutex.unlock();
 }
 
+#if HAVE_SPARK_HARDWARE
 void CFbAccel::_blit()
 {
 #ifdef PARTIAL_BLIT
@@ -884,7 +888,7 @@ void CFbAccel::blit()
 
 #else
 /* not azbox and not spark -> no blit() needed */
-void CFbAccel::blit()
+void CFbAccel::_blit()
 {
 #ifdef USE_OPENGL
 	if (glfb)

src/driver/framebuffer_ng.h

@@ -36,10 +36,8 @@
 #include <vector>
 #include <OpenThreads/Mutex>
 #include <OpenThreads/ScopedLock>
-#if HAVE_SPARK_HARDWARE
 #include <OpenThreads/Thread>
 #include <OpenThreads/Condition>
-#endif
 
 #define fb_pixel_t uint32_t
 
@@ -69,9 +67,7 @@ typedef struct fb_var_screeninfo t_fb_var_screeninfo;
 
 class CFrameBuffer;
 class CFbAccel
-#if HAVE_SPARK_HARDWARE
 	: public OpenThreads::Thread
-#endif
 {
 	private:
 		CFrameBuffer *fb;
@@ -84,14 +80,12 @@ class CFbAccel
 		void add_gxa_sync_marker(void);
 #endif /* USE_NEVIS_GXA */
 		void setColor(fb_pixel_t col);
-#if HAVE_SPARK_HARDWARE
 		void run(void);
 		void _blit(void);
 		bool blit_thread;
 		bool blit_pending;
 		OpenThreads::Condition blit_cond;
 		OpenThreads::Mutex blit_mutex;
-#endif
 	public:
 		fb_pixel_t *backbuffer;
 		fb_pixel_t *lbb;