TMS320DM642学习----第六篇（CCS中.dat文件类型详解）

MagicNumber Format StartingAddress PageNum Length [NewFormat]

1 1651 2 8cc0 0 1a70c
2 79
3 74
4 74
5 67
6 ...
7 ...

 1 import cv2
 2 import glob
 3 Path = glob.glob('*.jpg')
 4 count = 0
 5 for Pic in Path:
 6         I = cv2.imread(Pic)
 7         res = cv2.resize(I,(190,190),interpolation=cv2.INTER_CUBIC)
 8         Name = "Test" + str(count)
 9         cv2.imwrite(Name + ".png",res)
10         fid = open(Name + ".dat",'w')
11         fid.write('1651 2 8cc0 0 1a70c'+'
')
12         width,height = res.shape[:2]
13         for channel in range(3):
14                 for row in range(height):
15                         for col in range(width):
16                                 fid.write(str(res[row][col][channel])+'
')
17         count += 1

 1 from scipy.io.wavfile import write, read
 2 import numpy as np
 3 import math
 4 import glob
 5 import sys
 6 import os
 7 
 8 INT16_FAC = (2**15)-1
 9 INT32_FAC = (2**31)-1
10 INT64_FAC = (2**63)-1
11 norm_fact = {'int16':INT16_FAC, 'int32':INT32_FAC, 'int64':INT64_FAC,'float32':1.0,'float64':1.0}
12 
13 def wavread(filename):
14     """
15     Read a sound file and convert it to a normalized floating point array
16     filename: name of file to read
17     returns fs: sampling rate of file, x: floating point array
18     """
19     if (os.path.isfile(filename) == False):                  # raise error if wrong input file
20             print("Input file does not exist. Make sure you computed the analysis/synthesis")
21 
22     fs, x = read(filename)
23 
24     if (len(x.shape) !=1):                                   # raise error if more than one channel
25             raise ValueError("Audio file should be mono")
26 
27     if (fs !=44100):                                         # raise error if more than one channel
28             raise ValueError("Sampling rate of input sound should be 44100")
29 
30     #scale down and convert audio into floating point number in range of -1 to 1
31     x = np.float32(x)/norm_fact[x.dtype.name]
32     return fs, x
33 
34 path = glob.glob('*.wav')
35 count = 1
36 for p in path:
37     fs, dat = wavread(str(p))
38 
39     fid = open(str(count)+'.dat','w')
40     # flie·Magic=1651 X=9 data·StartAddress=0x80000000 X=0 data·Number(Hex)=0x7a120 X=5
41     fid.write('1651 9 80000000 0 7a120 5'+'
')
42     for i in dat:
43             fid.write(str(i)+'
')
44     fid.close()
45     count += 1

1 1651 9 80000000 0 7a120 5
2 0.0
3 0.05011866
4 0.10004042
5 0.14956915
6 0.19851027
7 ...
8 ...