path: root/apps/gui/skin_engine/skin_backdrops.c
diff options
authorWilliam Wilgus <>2020-10-07 02:01:35 -0400
committerWilliam Wilgus <>2020-10-26 12:28:48 -0400
commit3237ae4a4ff9296a377ff9194a11038da161208f (patch)
treeaf4338c78467b9b0845d76c39da1fbe10f25e23e /apps/gui/skin_engine/skin_backdrops.c
parent12f3ed1699d6bef25bed90ba95cbcc1a6bb4934a (diff)
LCD core move buf ptr and address look up function viewport struct
I'm currently running up against the limitations of the lcd_draw functions I want these functions to be able to be used on any size buffer not just buffers with a stride matching the underlying device [DONE] allow the framebuffer to be decoupled from the device framebuffer [DONE need examples] allow for some simple blit like transformations [DONE] remove the device framebuffer from the plugin api [DONE}ditto remote framebuffer [DONE] remove _viewport_get_framebuffer you can call struct *vp = lcd_set_viewport(NULL) and vp->buffer->fb_ptr while remote lcds may compile (and work in the sim) its not been tested on targets [FIXED] backdrops need work to be screen agnostic [FIXED] screen statusbar is not being combined into the main viewport correctly yet [FIXED] screen elements are displayed incorrectly after switch to void* [FIXED] core didn't restore proper viewport on splash etc. [NEEDS TESTING] remote lcd garbled data [FIXED] osd lib garbled screen on bmp_part [FIXED] grey_set_vp needs to return old viewport like lcd_set_viewport [FIXED] Viewport update now handles viewports with differing buffers/strides by copying to the main buffer [FIXED] splash on top of WPS leaves old framebuffer data (doesn't redraw) [UPDATE] refined this a bit more to have clear_viewport set the clean bit and have skin_render do its own screen clear scrolling viewports no longer trigger wps refresh also fixed a bug where guisyncyesno was displaying and then disappearing [ADDED!] New LCD macros that allow you to create properly size frame buffers in you desired size without wasting bytes (LCD_ and LCD_REMOTE_) LCD_STRIDE(w, h) same as STRIDE_MAIN LCD_FBSTRIDE(w, h) returns target specific stride for a buffer W x H LCD_NBELEMS(w, h) returns the number of fb_data sized elemenst needed for a buffer W x H LCD_NATIVE_STRIDE(s) conversion between rockbox native vertical and lcd native stride (2bitH) test_viewports.c has an example of usage [FIXED!!] 2bit targets don't respect non-native strides [FIXED] Few define snags Change-Id: I0d04c3834e464eca84a5a715743a297a0cefd0af
Diffstat (limited to 'apps/gui/skin_engine/skin_backdrops.c')
1 files changed, 21 insertions, 4 deletions
diff --git a/apps/gui/skin_engine/skin_backdrops.c b/apps/gui/skin_engine/skin_backdrops.c
index 243fc30a3a..caf705af54 100644
--- a/apps/gui/skin_engine/skin_backdrops.c
+++ b/apps/gui/skin_engine/skin_backdrops.c
@@ -204,11 +204,28 @@ bool skin_backdrops_preload(void)
return retval;
-void* skin_backdrop_get_buffer(int backdrop_id)
+void skin_backdrop_set_buffer(int backdrop_id, struct skin_viewport *svp)
- if (backdrop_id < 0)
- return NULL;
- return backdrops[backdrop_id].buffer;
+ if (UNLIKELY(!svp))
+ return;
+ else if (backdrop_id < 0)
+ {
+ svp->vp.buffer = NULL; /*Default*/
+ return;
+ }
+ enum screen_type screen = backdrops[backdrop_id].screen;
+ svp->framebuf.ch_ptr = backdrops[backdrop_id].buffer;
+#if defined(HAVE_REMOTE_LCD)
+ if (screen == SCREEN_REMOTE)
+ svp->framebuf.elems = REMOTE_LCD_BACKDROP_BYTES / sizeof(fb_remote_data);
+ else
+ {
+ svp->framebuf.elems = LCD_BACKDROP_BYTES / sizeof(fb_data);
+ }
+ svp->framebuf.get_address_fn = NULL; /*Default iterator*/
+ screens[screen].viewport_set_buffer(&svp->vp, &svp->framebuf);
void skin_backdrop_show(int backdrop_id)