openmv/tools/pyopenmv_fb.py
2024-08-06 10:55:52 +03:00

137 lines
4.4 KiB
Python
Executable File

#!/usr/bin/env python2
# This file is part of the OpenMV project.
#
# Copyright (c) 2013-2021 Ibrahim Abdelkader <iabdalkader@openmv.io>
# Copyright (c) 2013-2021 Kwabena W. Agyeman <kwagyeman@openmv.io>
#
# This work is licensed under the MIT license, see the file LICENSE for details.
#
# An example script using pyopenmv to grab the framebuffer.
import sys
import numpy as np
import pygame
import pyopenmv
import argparse
import time
test_script = """
import sensor, image, time
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
clock = time.clock()
while(True):
clock.tick()
img = sensor.snapshot()
print(clock.fps(), " FPS")
"""
bench_script = """
import sensor, image, time
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.VGA)
img = sensor.snapshot().compress()
while(True):
img.flush()
"""
def pygame_test(port, poll_rate, scale, benchmark):
# init pygame
pygame.init()
pyopenmv.disconnect()
connected = False
for i in range(10):
try:
# opens CDC port.
# Set small timeout when connecting
pyopenmv.init(port, baudrate=921600, timeout=0.050)
connected = True
break
except Exception as e:
connected = False
time.sleep(0.100)
if not connected:
print("Failed to connect to OpenMV's serial port.\n"
"Please install OpenMV's udev rules first:\n"
"sudo cp openmv/udev/50-openmv.rules /etc/udev/rules.d/\n"
"sudo udevadm control --reload-rules\n\n")
sys.exit(1)
# Set higher timeout after connecting for lengthy transfers.
pyopenmv.set_timeout(1*2) # SD Cards can cause big hicups.
pyopenmv.stop_script()
pyopenmv.enable_fb(True)
pyopenmv.exec_script(bench_script if benchmark else test_script)
# init screen
running = True
screen = None
clock = pygame.time.Clock()
fps_clock = pygame.time.Clock()
font = pygame.font.SysFont("monospace", 30)
if benchmark:
screen = pygame.display.set_mode((640, 120), pygame.DOUBLEBUF, 32)
try:
while running:
# Read state
w, h, data, size, text, fmt = pyopenmv.read_state()
if text is not None:
print(text, end="")
if data is not None:
fps = fps_clock.get_fps()
# Create image from RGB888
if not benchmark:
image = pygame.image.frombuffer(data.flat[0:], (w, h), 'RGB')
image = pygame.transform.smoothscale(image, (w * scale, h * scale))
if screen is None:
screen = pygame.display.set_mode((w * scale, h * scale), pygame.DOUBLEBUF, 32)
# blit stuff
if benchmark:
screen.fill((0, 0, 0))
else:
screen.blit(image, (0, 0))
screen.blit(font.render(f"{fps:.2f} FPS {fps * size / 1024**2:.2f} MB/s {w}x{h} {fmt}", 5, (255, 0, 0)), (0, 0))
# update display
pygame.display.flip()
fps_clock.tick(1000//poll_rate)
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
elif event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
running = False
if event.key == pygame.K_c:
pygame.image.save(image, "capture.png")
clock.tick(1000//poll_rate)
except KeyboardInterrupt:
pass
pygame.quit()
pyopenmv.stop_script()
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='pyopenmv module')
parser.add_argument('--port', action = 'store', help='OpenMV camera port (default /dev/ttyACM0)', default='/dev/ttyACM0', )
parser.add_argument('--poll', action = 'store', help='Poll rate (default 4ms)', default=4, type=int)
parser.add_argument('--bench', action = 'store_true', help='Run throughput benchmark.', default=False)
parser.add_argument('--scale', action = 'store', help='Set frame scaling factor (default 4x).', default=4, type=int)
args = parser.parse_args()
pygame_test(args.port, args.poll, args.scale, args.bench)