50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
import math
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def round_up_16(num):
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return ((num + (16 - 1)) & ~(16 - 1))
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def round_up_n(num, n):
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if (num > 0):
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temp = float(num) / n
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return math.ceil(temp) * n
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else:
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return -math.ceil(float(-num) / n) * n
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def cal_img_row_offset(crop_num, pad_num, start_row, out_row, orig_row):
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scaled_img_row = int(out_row - (pad_num[1] + pad_num[3]))
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if ((start_row - pad_num[1]) > 0):
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img_str_row = int((start_row - pad_num[1]))
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else:
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img_str_row = 0
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valid_row = int(orig_row - (crop_num[1] + crop_num[3]))
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img_str_row = int(valid_row * img_str_row / scaled_img_row)
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return int(img_str_row + crop_num[1])
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def get_pad_num(pad_num_orig, left, up, right, bottom):
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pad_num = [0]*4
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for i in range(0,4):
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pad_num[i] = pad_num_orig[i]
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if not (left):
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pad_num[0] = 0
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if not (up):
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pad_num[1] = 0
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if not (right):
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pad_num[2] = 0
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if not (bottom):
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pad_num[3] = 0
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return pad_num
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def get_byte_per_pixel(raw_fmt):
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if raw_fmt.lower() in ['RGB888', 'rgb888', 'RGB', 'rgb888']:
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return 4
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elif raw_fmt.lower() in ['YUV', 'yuv', 'YUV422', 'yuv422']:
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return 2
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elif raw_fmt.lower() in ['RGB565', 'rgb565']:
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return 2
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elif raw_fmt.lower() in ['NIR888', 'nir888', 'NIR', 'nir']:
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return 1
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else:
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return -1 |