Add support for QualcommOnyxEPDController (#1221)

* Adds support for QualcommOnyxEPDController
* Refactors code to rely on epd constants returned from android-luajit-launcher

ffi/framebuffer_android.lua

@@ -11,14 +11,8 @@ local has_eink_screen, eink_platform = android.isEink()
 -- does the device needs to handle all screen refreshes
 local has_eink_full_support = android.isEinkFull()
 
--- for *some* rockchip devices
-local rk_full, rk_partial, rk_a2, rk_auto = 1, 2, 3, 4 -- luacheck: ignore
 
--- for *some* freescale devices
-local update_full, update_partial = 32, 0 -- luacheck: ignore
-local waveform_du, waveform_gc16, waveform_regal = 1, 2, 7 -- luacheck: ignore
-local partial_du, partial_gc16, partial_regal = waveform_du, waveform_gc16, waveform_regal -- luacheck: ignore
-local full_gc16, full_regal = update_full + waveform_gc16, update_full + waveform_regal -- luacheck: ignore
+local full, partial, full_ui, partial_ui, fast, delay_page, delay_ui, delay_fast = android.getEinkConstants()
 
 local framebuffer = {}
 
@@ -35,18 +29,18 @@ end
 -- update the entire screen
 function framebuffer:_updateFull()
     -- freescale ntx platform
-    if has_eink_screen and (eink_platform == "freescale") then
+    if has_eink_screen and (eink_platform == "freescale" or eink_platform == "qualcomm") then
         if has_eink_full_support then
-            -- we handle the screen entirely. No delay is needed
-            self:_updatePartial(full_gc16, 0)
+            -- we handle the screen entirely
+            self:_updatePartial(full, delay_page)
         else
             -- we're racing against system driver. Let the system win and apply
             -- a full update after it.
-            self:_updatePartial(full_gc16, 500)
+            self:_updatePartial(full, 500)
         end
     -- rockchip rk3x platform
     elseif has_eink_screen and (eink_platform == "rockchip") then
-        android.einkUpdate(rk_full)
+        android.einkUpdate(full)
     end
 end
 
@@ -141,43 +135,43 @@ function framebuffer:_updateWindow()
     android.lib.ANativeWindow_unlockAndPost(android.app.window);
 end
 
-function framebuffer:refreshFullImp(x, y, w, h)
+function framebuffer:refreshFullImp(x, y, w, h) -- luacheck: ignore
     self:_updateWindow()
     self:_updateFull()
 end
 
 function framebuffer:refreshPartialImp(x, y, w, h)
     self:_updateWindow()
     if has_eink_full_support then
-        self:_updatePartial(partial_regal, 0, x, y, w, h)
+        self:_updatePartial(partial, delay_page, x, y, w, h)
     end
 end
 
 function framebuffer:refreshFlashPartialImp(x, y, w, h)
     self:_updateWindow()
     if has_eink_full_support then
-        self:_updatePartial(full_regal, 0, x, y, w, h)
+        self:_updatePartial(full, delay_page, x, y, w, h)
     end
 end
 
 function framebuffer:refreshUIImp(x, y, w, h)
     self:_updateWindow()
     if has_eink_full_support then
-        self:_updatePartial(partial_regal, 0, x, y, w, h)
+        self:_updatePartial(partial_ui, delay_ui, x, y, w, h)
     end
 end
 
 function framebuffer:refreshFlashUIImp(x, y, w, h)
     self:_updateWindow()
     if has_eink_full_support then
-        self:_updatePartial(full_regal, 0, x, y, w, h)
+        self:_updatePartial(full_ui, delay_ui, x, y, w, h)
     end
 end
 
 function framebuffer:refreshFastImp(x, y, w, h)
     self:_updateWindow()
     if has_eink_full_support then
-        self:_updatePartial(partial_du, 0, x, y, w, h)
+        self:_updatePartial(fast, delay_fast, x, y, w, h)
     end
 end