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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020, Google Inc.
#
# Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
#
# gen-formats.py - Generate formats definitions from YAML
import argparse
import re
import string
import sys
import yaml
class DRMFourCC(object):
format_regex = re.compile(r"#define (DRM_FORMAT_[A-Z0-9_]+)[ \t]+fourcc_code\(('.', '.', '.', '.')\)")
mod_vendor_regex = re.compile(r"#define DRM_FORMAT_MOD_VENDOR_([A-Z0-9_]+)[ \t]+([0-9a-fA-Fx]+)")
mod_regex = re.compile(r"#define ([A-Za-z0-9_]+)[ \t]+fourcc_mod_code\(([A-Z0-9_]+), ([0-9a-fA-Fx]+)\)")
def __init__(self, filename):
self.formats = {}
self.vendors = {}
self.mods = {}
for line in open(filename, 'rb').readlines():
line = line.decode('utf-8')
match = DRMFourCC.format_regex.match(line)
if match:
format, fourcc = match.groups()
self.formats[format] = fourcc
continue
match = DRMFourCC.mod_vendor_regex.match(line)
if match:
vendor, value = match.groups()
self.vendors[vendor] = int(value, 0)
continue
match = DRMFourCC.mod_regex.match(line)
if match:
mod, vendor, value = match.groups()
self.mods[mod] = (vendor, int(value, 0))
continue
def fourcc(self, name):
return self.formats[name]
def mod(self, name):
vendor, value = self.mods[name]
return self.vendors[vendor], value
def generate_h(formats, drm_fourcc):
template = string.Template('constexpr PixelFormat ${name}{ __fourcc(${fourcc}), __mod(${mod}) };')
fmts = []
for format in formats:
name, format = format.popitem()
fourcc = drm_fourcc.fourcc(format['fourcc'])
if format.get('big-endian'):
fourcc += '| DRM_FORMAT_BIG_ENDIAN'
data = {
'name': name,
'fourcc': fourcc,
'mod': '0, 0',
}
mod = format.get('mod')
if mod:
data['mod'] = '%u, %u' % drm_fourcc.mod(mod)
fmts.append(template.substitute(data))
return {'formats': '\n'.join(fmts)}
def fill_template(template, data):
template = open(template, 'rb').read()
template = template.decode('utf-8')
template = string.Template(template)
return template.substitute(data)
def main(argv):
# Parse command line arguments
parser = argparse.ArgumentParser()
parser.add_argument('-o', dest='output', metavar='file', type=str,
help='Output file name. Defaults to standard output if not specified.')
parser.add_argument('input', type=str,
help='Input file name.')
parser.add_argument('template', type=str,
help='Template file name.')
parser.add_argument('drm_fourcc', type=str,
help='Path to drm_fourcc.h.')
args = parser.parse_args(argv[1:])
data = open(args.input, 'rb').read()
formats = yaml.safe_load(data)['formats']
drm_fourcc = DRMFourCC(args.drm_fourcc)
data = generate_h(formats, drm_fourcc)
data = fill_template(args.template, data)
if args.output:
output = open(args.output, 'wb')
output.write(data.encode('utf-8'))
output.close()
else:
sys.stdout.write(data)
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
|
