snapshot

# Snapshot Example
#
# Note: You will need an SD card to run this example.
#
# You can use your CanMV Cam to save image files.

from media.camera import *
from media.display import *
from media.media import *
import time, os

DISPLAY_WIDTH = ALIGN_UP(1920, 16)
DISPLAY_HEIGHT = 1080

def camera_init():
    # use hdmi for display
    display.init(LT9611_1920X1080_30FPS)
    # init default sensor
    camera.sensor_init(CAM_DEV_ID_0, CAM_DEFAULT_SENSOR)
    # set chn0 output size
    camera.set_outsize(CAM_DEV_ID_0, CAM_CHN_ID_0, DISPLAY_WIDTH, DISPLAY_HEIGHT)
    # set chn0 output format
    camera.set_outfmt(CAM_DEV_ID_0, CAM_CHN_ID_0, PIXEL_FORMAT_YUV_SEMIPLANAR_420)
    # create meida source device
    globals()["meida_source"] = media_device(CAMERA_MOD_ID, CAM_DEV_ID_0, CAM_CHN_ID_0)
    # create meida sink device
    globals()["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, DISPLAY_WIDTH, DISPLAY_HEIGHT, PIXEL_FORMAT_YVU_PLANAR_420, DISPLAY_MIRROR_NONE, DISPLAY_CHN_VIDEO1)
    # set chn1 output rgb888
    camera.set_outsize(CAM_DEV_ID_0, CAM_CHN_ID_1, DISPLAY_WIDTH, DISPLAY_HEIGHT)
    camera.set_outfmt(CAM_DEV_ID_0, CAM_CHN_ID_1, PIXEL_FORMAT_RGB_888)
    # media buffer init
    media.buffer_init()
    # start stream for camera device0
    camera.start_stream(CAM_DEV_ID_0)

def camera_deinit():
    # stop stream for camera device0
    camera.stop_stream(CAM_DEV_ID_0)
    # deinit display
    display.deinit()
    os.exitpoint(os.EXITPOINT_ENABLE_SLEEP)
    time.sleep_ms(100)
    # destroy media link
    media.destroy_link(globals()["meida_source"], globals()["meida_sink"])
    # deinit media buffer
    media.buffer_deinit()

def capture_picture():
    time.sleep(1)
    rgb888_img = camera.capture_image(CAM_DEV_ID_0, CAM_CHN_ID_1)
    try:
        rgb888_img.to_jpeg().save("/sdcard/snapshot.jpg")
        print("save image ok")
    except Exception as e:
        print("save image fail: ", e)
    # release image for dev and chn
    camera.release_image(CAM_DEV_ID_0, CAM_CHN_ID_1, rgb888_img)

def main():
    os.exitpoint(os.EXITPOINT_ENABLE_SLEEP)
    print("camera init")
    camera_init()
    print("camera capture")
    capture_picture()
    print("camera deinit")
    camera_deinit()

if __name__ == "__main__":
    main()

具体接口使用请参考相关文档说明：

• camere

• display

• media

• image