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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020, Google Inc.
#
# Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
#
# Generate formats definitions from YAML
import argparse
import jinja2
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, file):
self.formats = {}
self.vendors = {}
self.mods = {}
for line in file:
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_formats(formats, drm_fourcc):
fmts = []
for format in formats:
name, format = format.popitem()
fourcc = drm_fourcc.fourcc(format['fourcc'])
data = {
'name': name,
'fourcc': fourcc,
'mod': '0, 0',
'big_endian': format.get('big_endian'),
}
mod = format.get('mod')
if mod:
data['mod'] = '%u, %u' % drm_fourcc.mod(mod)
fmts.append(data)
return fmts
def main(argv):
# Parse command line arguments
parser = argparse.ArgumentParser()
parser.add_argument('-o', dest='output', metavar='file', default=sys.stdout,
type=argparse.FileType('w', encoding='utf-8'),
help='Output file name. Defaults to standard output if not specified.')
parser.add_argument('input', type=argparse.FileType('rb'),
help='Input file name.')
parser.add_argument('template', type=argparse.FileType('r', encoding='utf-8'),
help='Template file name.')
parser.add_argument('drm_fourcc', type=argparse.FileType('r', encoding='utf-8'),
help='Path to drm_fourcc.h.')
args = parser.parse_args(argv[1:])
formats = yaml.safe_load(args.input)['formats']
drm_fourcc = DRMFourCC(args.drm_fourcc)
env = jinja2.Environment()
template = env.from_string(args.template.read())
string = template.render({
'formats': generate_formats(formats, drm_fourcc),
})
args.output.write(string)
return 0
if __name__ == '__main__':
sys.exit(main(sys.argv))
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