Time QR decoding and add kdmukai's speedups

240x240 image decoding goes from 1800ms to 406ms. Thanks, @kdmukai!

c_mpos/micropython.cmake

@@ -21,6 +21,18 @@ target_sources(usermod_c_mpos INTERFACE ${MPOS_C_SOURCES})
 # Add include directories.
 target_include_directories(usermod_c_mpos INTERFACE ${MPOS_C_INCLUDES})
 
+
+target_compile_definitions(usermod_c_mpos INTERFACE
+    # force quirc to use single precision floating point math
+    -DQUIRC_FLOAT_TYPE=float
+    -DQUIRC_USE_TGMATH=1
+)
+
+# Be sure to set the -O2 "optimize" flag!!
+target_compile_options(usermod_c_mpos INTERFACE
+    -O2
+)
+
 # Link our INTERFACE library to the usermod target.
 target_link_libraries(usermod INTERFACE usermod_c_mpos)
 

internal_filesystem/apps/com.micropythonos.camera/assets/camera_app.py

@@ -171,11 +171,15 @@ class CameraApp(Activity):
     def qrdecode_one(self):
         try:
             import qrdecode
+            import utime
+            before = utime.ticks_ms()
             result = qrdecode.qrdecode_rgb565(self.current_cam_buffer, self.width, self.height)
+            after = utime.ticks_ms()
             #result = bytearray("INSERT_QR_HERE", "utf-8")
             if not result:
                 self.status_label.set_text(self.status_label_text_searching)
             else:
+                print(f"SUCCESSFUL QR DECODE TOOK: {after-before}ms")
                 result = remove_bom(result)
                 result = print_qr_buffer(result)
                 print(f"QR decoding found: {result}")