esp-idf/examples/peripherals/jpeg/jpeg_decode/open_rgb.py

92 wiersze
2.4 KiB
Python

# SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import argparse
import cv2 as cv
import numpy as np
def open_picture(path): # type: (str) -> list[int]
with open(path, 'rb') as f:
data = f.read()
f.close()
new_data = [int(x) for x in data]
return new_data
def picture_show_rgb888(data, h, w): # type: (list[int], int, int) -> None
data = np.array(data).reshape(h, w, 3).astype(np.uint8)
cv.imshow('data', data)
cv.waitKey()
def picture_show_rgb565(data, h, w): # type: (list[int], int, int) -> None
new_data = [0] * ((len(data) // 2) * 3)
for i in range(len(data)):
if i % 2 != 0:
new_data[3 * (i - 1) // 2 + 2] = (data[i] & 0xf8)
new_data[3 * (i - 1) // 2 + 1] |= (data[i] & 0x7) << 5
else:
new_data[3 * i // 2] = (data[i] & 0x1f) << 3
new_data[3 * i // 2 + 1] |= (data[i] & 0xe0) >> 3
new_data = np.array(new_data).reshape(h, w, 3).astype(np.uint8)
cv.imshow('data', new_data)
cv.waitKey()
def picture_show_gray(data, h, w): # type: (list[int], int, int) -> None
new_data = np.array(data).reshape(h, w, 1).astype(np.uint8)
cv.imshow('data', new_data)
cv.waitKey()
def main(): # type: () -> None
parser = argparse.ArgumentParser(description='which mode need to show')
parser.add_argument(
'--pic_path',
type=str,
help='What is the path of your picture',
required=True)
parser.add_argument(
'--pic_type',
type=str,
help='What type you want to show',
required=True,
choices=['rgb565', 'rgb888', 'gray'])
parser.add_argument(
'--hight',
type=int,
help='the picture hight',
default=480)
parser.add_argument(
'--width',
type=int,
help='the picture width',
default=640)
args = parser.parse_args()
hight = args.hight
width = args.width
data = open_picture(args.pic_path)
if (args.pic_type == 'rgb565'):
picture_show_rgb565(data, hight, width)
elif (args.pic_type == 'rgb888'):
picture_show_rgb888(data, hight, width)
elif (args.pic_type == 'gray'):
picture_show_gray(data, hight, width)
else:
print('This type is not supported in this script!')
if __name__ == '__main__':
main()