Added support for the GCW0 IPU Scaler

Makefile.gcw0

@@ -46,7 +46,7 @@ ifeq ($(WITH_NETWORK), true)
     SDL_LDLIBS += -lSDL_net
 endif
 
-ALL_CFLAGS += -std=c99 -I./src -DTARGET_$(PLATFORM) $(EXTRA_CFLAGS) $(SDL_CFLAGS) $(CFLAGS)
+ALL_CFLAGS += -std=c99 -I./src -DTARGET_$(PLATFORM) $(EXTRA_CFLAGS) $(SDL_CFLAGS) $(CFLAGS) -DTARGET_GCW0
 ALL_LDFLAGS += $(LDFLAGS)
 LDLIBS += $(EXTRA_LDLIBS) $(SDL_LDLIBS)
 

src/video.c

@@ -134,7 +134,22 @@ bool init_scaler( unsigned int new_scaler, bool fullscreen )
 		scaler_function = NULL;
 		break;
 	}
-
+
+#ifdef TARGET_GCW0
+	FILE* aspect_ratio_file = fopen("/sys/devices/platform/jz-lcd.0/keep_aspect_ratio", "w");
+	if (aspect_ratio_file)
+	{
+		if ((scaler_function == shw_8)
+				|| (scaler_function == shw_16)
+				|| (scaler_function == shw_32))
+			fwrite("0", 1, 1, aspect_ratio_file);
+		else
+			fwrite("1", 1, 1, aspect_ratio_file);
+
+		fclose(aspect_ratio_file);
+	}
+#endif
+
 	if (scaler_function == NULL)
 	{
 		assert(false);

src/video_scale.c

@@ -37,6 +37,7 @@ static void scale2x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
 static void scale3x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
 static void scale3x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
 #else
+
 static void s1dot2_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
 static void s1dot2_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
 
@@ -54,6 +55,9 @@ const struct Scalers scalers[] =
 {
 #if defined(TARGET_GP2X) || defined(TARGET_DINGUX)
 	{ 320,           240,            no_scale, nn_16,      nn_32,      "None" },
+#if defined(TARGET_GCW0)
+	{ 320,           200,            shw_8,    shw_16,     shw_32,     "Scale HW"},
+#endif
 	{ 320,           240,            NULL,     s1dot2_16,  s1dot2_32,  "Scale1.2x" },
 	{ 320,           240,            NULL,     hqs1dot2_16,hqs1dot2_32,"hq1.2x" },
 #else
@@ -88,6 +92,8 @@ void set_scaler_by_name( const char *name )
 
 void no_scale( SDL_Surface *src_surface, SDL_Surface *dst_surface )
 {
+	//TODO:: Investigate- doesn't seem quite right
+
 	Uint8 *src = src_surface->pixels,
 	      *dst = dst_surface->pixels;
 
@@ -606,3 +612,20 @@ static void hqs1dot2_32( SDL_Surface *src_surface, SDL_Surface *dst_surface )
 }
 
 #endif
+
+#if defined (TARGET_GCW0)
+void shw_8( SDL_Surface *src_surface, SDL_Surface *dst_surface )
+{
+	no_scale(src_surface, dst_surface);
+}
+
+void shw_16( SDL_Surface *src_surface, SDL_Surface *dst_surface )
+{
+	nn_16(src_surface, dst_surface);
+}
+
+void shw_32( SDL_Surface *src_surface, SDL_Surface *dst_surface )
+{
+	nn_32(src_surface, dst_surface);
+}
+#endif

src/video_scale.h

@@ -38,5 +38,11 @@ extern const uint scalers_count;
 
 void set_scaler_by_name( const char *name );
 
+#if defined(TARGET_GCW0)
+void shw_8( SDL_Surface *src_surface, SDL_Surface *dst_surface );
+void shw_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
+void shw_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
+#endif
+
 #endif /* VIDEO_SCALE_H */