Merge branch 'hzy-fix-example' into 'dev'

fix camera_480p.py example

See merge request maix_sw/k230_canmv!206

tests/media/camera_480p.py

@@ -1,69 +1,58 @@
+# Camera Example
+
 from media.camera import *
 from media.display import *
 from media.media import *
-from time import *
-import time
-import image
-from mpp import *
-import gc
-from random import randint
-
-def canmv_camera_test():
-    print("canmv_camera_test")
+import time, os
+import sys
 
+def camera_test():
+    print("camera_test")
     # use hdmi for display
     display.init(LT9611_1920X1080_30FPS)
-
-    # use EVB LCD for display
-    # display.init(HX8377_1080X1920_30FPS)
-
     camera.sensor_init(CAM_DEV_ID_0, CAM_DEFAULT_SENSOR)
-
     out_width = 640
     out_height = 480
+    # set camera out width align up with 16Bytes
     out_width = ALIGN_UP(out_width, 16)
-
-    # set chn0 output yuv420sp
+    # set chn0 output size
     camera.set_outsize(CAM_DEV_ID_0, CAM_CHN_ID_0, out_width, out_height)
+    # set chn0 out format
     camera.set_outfmt(CAM_DEV_ID_0, CAM_CHN_ID_0, PIXEL_FORMAT_YUV_SEMIPLANAR_420)
-
+    # create meida source device
     meida_source = media_device(CAMERA_MOD_ID, CAM_DEV_ID_0, CAM_CHN_ID_0)
+    # create meida sink device
     meida_sink = media_device(DISPLAY_MOD_ID, DISPLAY_DEV_ID, DISPLAY_CHN_VIDEO1)
+    # create meida link
     media.create_link(meida_source, meida_sink)
-
+    # set display plane with video channel
     display.set_plane(0, 0, out_width, out_height, PIXEL_FORMAT_YVU_PLANAR_420, DISPLAY_MIRROR_NONE, DISPLAY_CHN_VIDEO1)
-
-    ret = media.buffer_init()
-    if ret:
-        print("canmv_camera_test, buffer init failed")
-        return ret
-
+    # init meida buffer
+    media.buffer_init()
+    # start stream for camera device0
     camera.start_stream(CAM_DEV_ID_0)
-    img = None
     try:
-        capture_count = 0
         while True:
-            img = camera.capture_image(0, 0)
+            os.exitpoint()
+            img = camera.capture_image(CAM_DEV_ID_0, CAM_CHN_ID_0)
             img.compress_for_ide()
-            camera.release_image(0, 0, img)
-            gc.collect()
-            capture_count += 1
-            print(capture_count)
-    except Exception as e:
-        print(f"An error occurred during buffer used: {e}")
-    finally:
-        print('end')
-        if img:
-            camera.release_image(0, 0, img)
-        else:
-            print('img not dumped')
+            # release image for dev and chn
+            camera.release_image(CAM_DEV_ID_0, CAM_CHN_ID_0, img)
+    except KeyboardInterrupt as e:
+        print("user stop: ", e)
+    except BaseException as e:
+        sys.print_exception(e)
+    # stop stream for camera device0
     camera.stop_stream(CAM_DEV_ID_0)
-
+    # deinit display
     display.deinit()
-
+    # destroy media link
     media.destroy_link(meida_source, meida_sink)
-    time.sleep(1)
-    print("camera test exit")
-    return 0
-
-canmv_camera_test()
+    os.exitpoint(os.EXITPOINT_ENABLE_SLEEP)
+    time.sleep_ms(100)
+    # deinit media buffer
+    media.buffer_deinit()
+
+if __name__ == "__main__":
+    os.exitpoint(os.EXITPOINT_ENABLE)
+    camera_test()