gen_table_fourcc.py

   1 #!/usr/bin/env python3
   2
   3 # Copyright 2021 Collabora, Ltd.
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining
   6 # a copy of this software and associated documentation files (the
   7 # "Software"), to deal in the Software without restriction, including
   8 # without limitation the rights to use, copy, modify, merge, publish,
   9 # distribute, sublicense, and/or sell copies of the Software, and to
  10 # permit persons to whom the Software is furnished to do so, subject to
  11 # the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the
  14 # next paragraph) shall be included in all copies or substantial
  15 # portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  20 # NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  21 # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  22 # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24 # SOFTWARE.
  25
  26 # Helper script that reads drm_fourcc.h and writes a static table with the
  27 # simpler format token modifiers
  28
  29 import sys
  30 import re
  31
  32 filename = sys.argv[1]
  33 towrite = sys.argv[2]
  34
  35 fm_re = {
  36     'intel': r'^#define I915_FORMAT_MOD_(\w+)',
  37     'others': r'^#define DRM_FORMAT_MOD_((?:ARM|SAMSUNG|QCOM|VIVANTE|NVIDIA|BROADCOM|ALLWINNER)\w+)\s',
  38     'vendors': r'^#define DRM_FORMAT_MOD_VENDOR_(\w+)'
  39 }
  40
  41 def print_fm_intel(f, f_mod):
  42     f.write('    {{ DRM_MODIFIER_INTEL({}, {}) }},\n'.format(f_mod, f_mod))
  43
  44 # generic write func
  45 def print_fm(f, vendor, mod, f_name):
  46     f.write('    {{ DRM_MODIFIER({}, {}, {}) }},\n'.format(vendor, mod, f_name))
  47
  48 with open(filename, "r") as f:
  49     data = f.read()
  50     for k, v in fm_re.items():
  51         fm_re[k] = re.findall(v, data, flags=re.M)
  52
  53 with open(towrite, "w") as f:
  54     f.write('''\
  55 /* AUTOMATICALLY GENERATED by gen_table_fourcc.py. You should modify
  56    that script instead of adding here entries manually! */
  57 static const struct drmFormatModifierInfo drm_format_modifier_table[] = {
  58 ''')
  59     f.write('    { DRM_MODIFIER_INVALID(NONE, INVALID_MODIFIER) },\n')
  60     f.write('    { DRM_MODIFIER_LINEAR(NONE, LINEAR) },\n')
  61
  62     for entry in fm_re['intel']:
  63         print_fm_intel(f, entry)
  64
  65     for entry in fm_re['others']:
  66         (vendor, mod) = entry.split('_', 1)
  67         if vendor == 'ARM' and (mod == 'TYPE_AFBC' or mod == 'TYPE_MISC'):
  68             continue
  69         print_fm(f, vendor, mod, mod)
  70
  71     f.write('''\
  72 };
  73 ''')
  74
  75     f.write('''\
  76 static const struct drmFormatModifierVendorInfo drm_format_modifier_vendor_table[] = {
  77 ''')
  78
  79     for entry in fm_re['vendors']:
  80         f.write("    {{ DRM_FORMAT_MOD_VENDOR_{}, \"{}\" }},\n".format(entry, entry))
  81
  82     f.write('''\
  83 };
  84 ''')