1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
#!/usr/bin/python
import sys, struct
# Lookup tables for DDS flags
DDSD_FLAG_TABLE = \
{
'DDSD_CAPS' : 0x1,
'DDSD_HEIGHT' : 0x2,
'DDSD_WIDTH' : 0x4,
'DDSD_PITCH' : 0x8,
'DDSD_PIXELFORMAT' : 0x1000,
'DDSD_MIPMAPCOUNT' : 0x20000,
'DDSD_LINEARSIZE' : 0x80000,
'DDSD_DEPTH' : 0x800000
}
DDPF_FLAG_TABLE = \
{
'DDPF_ALPHAPIXELS' : 0x1,
'DDPF_FOURCC' : 0x4,
'DDPF_RGB' : 0x40
}
# -----------------------------------------------------------------------------
# Main script
inFile = open(sys.argv[1])
# Read and unpack the header
rawData = inFile.read(32)
( sMagic,
dwSize,
dwFlags,
dwHeight,
dwWidth,
dwPitchOrLinearSize,
dwDepth,
dwMipMapCount
) = \
struct.unpack('4s I I I I I I I', rawData)
# Must have magic header
if (sMagic != 'DDS ' or dwSize != 124):
print "Not a valid DDS file."
sys.exit(1)
# Print out header information
print "DDS file, %dx%d" % (dwWidth, dwHeight)
if (dwFlags & DDSD_FLAG_TABLE['DDSD_LINEARSIZE']):
print "\t%d bytes" % dwPitchOrLinearSize
if (dwFlags & DDSD_FLAG_TABLE['DDSD_MIPMAPCOUNT']):
print "\t%d mipmaps" % dwMipMapCount
# Discard the 11 reserved DWORDS
inFile.read(11 * 4)
# Read the pixel format
rawPixelFormat = inFile.read(32)
(
dwSize,
dwFlags,
sFourCC,
dwRGBBitCount,
dwRBitMask,
dwGBitMask,
dwBBitMask,
dwRGBAlphaBitMask
) = \
struct.unpack('2I 4s 5I', rawPixelFormat)
# Print out pixel format information
if (DDPF_FLAG_TABLE['DDPF_FOURCC'] & dwFlags):
print "\t%s" % sFourCC
# Close file
inFile.close()
|
