[display] Refactor to avoid implicit framebuffer allocation.

platform/armemu/display.c

Index: platform/armemu/display.c
diff --git a/platform/armemu/display.c b/platform/armemu/display.c
index 72ecb7be077637e936605f26723125c01ad7bae0..124afb59475bfa94673251e73c3311a88c0c50e0 100644
--- a/platform/armemu/display.c
+++ b/platform/armemu/display.c
@@ -53,17 +53,30 @@ void platform_init_display(void)
 #endif
 }
 
+status_t display_get_framebuffer(struct display_framebuffer *fb)
+{

[gkalsi, 2016/03/09 21:13:37]

DEBUG_ASSERT(fb)

[cdotstout, 2016/03/09 22:48:00]

Done.

+    if (!has_display())
+        return ERR_NOT_FOUND;
+
+    fb->format = DISPLAY_FORMAT_RGB_x888;
+    fb->flush = NULL;
+    fb->image.format = IMAGE_FORMAT_RGB_x888;
+    fb->image.pixels = display_fb;
+    fb->image.width = display_w;
+    fb->image.height = display_h;
+    fb->image.rowbytes = display_w;
+
+    return NO_ERROR;
+}
+
 status_t display_get_info(struct display_info *info)
 {

[gkalsi, 2016/03/09 21:13:37]

DEBUG_ASSERT(info)

[cdotstout, 2016/03/09 22:48:00]

Done.

     if (!has_display())
         return ERR_NOT_FOUND;
 
-    info->framebuffer = display_fb;
-    info->format = GFX_FORMAT_RGB_x888;
+    info->format = DISPLAY_FORMAT_RGB_x888;
     info->width = display_w;
     info->height = display_h;
-    info->stride = display_w;
-    info->flush = NULL;
 
     return NO_ERROR;
 }