Optimize draw_rgb565 display write speed by skipping slow synchronous canvas updates during raw video frames

lib/ili9341.py

@@ -233,7 +233,7 @@ class ILI9341:
                 mono = 1 if lum >= 128 else 0
                 self.canvas.pixel(screen_x, screen_y, mono)
 
-    def draw_rgb565(self, x, y, w, h, data):
+    def draw_rgb565(self, x, y, w, h, data, sync_canvas=True):
         """Draw raw RGB565 pixel data on the screen at specified (x,y) with width and height."""
         # Clip coordinates
         x_start = max(0, x)
@@ -265,7 +265,8 @@ class ILI9341:
                 self.cs(1)
                 
         # Sync the internal 1-bit canvas buffer
-        self._update_mono_canvas_rgb565(x, y, w, h, data)
+        if sync_canvas:
+            self._update_mono_canvas_rgb565(x, y, w, h, data)
         return True
 
     # --- SCREENSHOT ---

lib/st7796.py

@@ -233,7 +233,7 @@ class ST7796:
                 mono = 1 if lum >= 128 else 0
                 self.canvas.pixel(screen_x, screen_y, mono)
 
-    def draw_rgb565(self, x, y, w, h, data):
+    def draw_rgb565(self, x, y, w, h, data, sync_canvas=True):
         """Draw raw RGB565 pixel data on the screen at specified (x,y) with width and height."""
         # Clip coordinates
         x_start = max(0, x)
@@ -265,7 +265,8 @@ class ST7796:
                 self.cs(1)
                 
         # Sync the internal 1-bit canvas buffer
-        self._update_mono_canvas_rgb565(x, y, w, h, data)
+        if sync_canvas:
+            self._update_mono_canvas_rgb565(x, y, w, h, data)
         return True
 
     # --- SCREENSHOT ---

mcp_server.py

@@ -77,8 +77,11 @@ class MCPServer:
         if self.sock is None:
             return
             
+        t0 = 0
+        t1 = 0
         try:
             client, addr = self.sock.accept()
+            t0 = time.ticks_ms()
         except OSError as e:
             import errno
             err = getattr(e, 'errno', None)
@@ -110,6 +113,7 @@ class MCPServer:
                 
             header_text = req_bytes[:header_end].decode('utf-8', 'ignore')
             lines = header_text.split('\r\n')
+            t1 = time.ticks_ms()
             if len(lines) == 0 or not lines[0]:
                 client.close()
                 return
@@ -171,6 +175,7 @@ class MCPServer:
                     if not chunk:
                         break
                     body_bytes.extend(chunk)
+                t2 = time.ticks_ms()
                     
                 # Parse query parameters from path (e.g. /api/screen/raw?x=0&y=0&w=320&h=240)
                 width = getattr(self.display, 'width', 320)
@@ -186,10 +191,12 @@ class MCPServer:
                             elif k == 'y': y = int(v)
                             elif k == 'w': w = int(v)
                             elif k == 'h': h = int(v)
+                t3 = time.ticks_ms()
                             
                 # Draw directly using display raw RGB565 method
                 self.override_active = True
-                self.display.draw_rgb565(x, y, w, h, body_bytes)
+                self.display.draw_rgb565(x, y, w, h, body_bytes, sync_canvas=False)
+                t4 = time.ticks_ms()
                 
                 resp_body = "OK"
                 resp = "HTTP/1.1 200 OK\r\n"
@@ -206,6 +213,15 @@ class MCPServer:
                         time.sleep_ms(10)
                         continue
                     total_sent += sent
+                t5 = time.ticks_ms()
+                print("[RAW API Profile] total={}ms: accept_to_header={}ms, recv_body={}ms, route_n_prep={}ms, draw={}ms, send_resp={}ms".format(
+                    time.ticks_diff(t5, t0),
+                    time.ticks_diff(t1, t0),
+                    time.ticks_diff(t2, t1),
+                    time.ticks_diff(t3, t2),
+                    time.ticks_diff(t4, t3),
+                    time.ticks_diff(t5, t4)
+                ))
             else:
                 # Return 404
                 resp = "HTTP/1.1 404 Not Found\r\nContent-Length: 0\r\nConnection: close\r\n\r\n"