IABSD.fr/xenocara/lib/libdrm/gen_table_fourcc.py

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• Author : jsg
  Date : 2022-04-29 10:11:42
  Hash : 17634269
  Message : Import libdrm 2.4.110

• lib/libdrm/gen_table_fourcc.py

• #!/usr/bin/env python3
  
  # Copyright 2021 Collabora, Ltd.
  #
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  #
  # The above copyright notice and this permission notice (including the
  # next paragraph) shall be included in all copies or substantial
  # portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  # Helper script that reads drm_fourcc.h and writes a static table with the
  # simpler format token modifiers
  
  import sys
  import re
  
  filename = sys.argv[1]
  towrite = sys.argv[2]
  
  fm_re = {
      'intel': r'^#define I915_FORMAT_MOD_(\w+)',
      'others': r'^#define DRM_FORMAT_MOD_((?:ARM|SAMSUNG|QCOM|VIVANTE|NVIDIA|BROADCOM|ALLWINNER)\w+)\s',
      'vendors': r'^#define DRM_FORMAT_MOD_VENDOR_(\w+)'
  }
  
  def print_fm_intel(f, f_mod):
      f.write('    {{ DRM_MODIFIER_INTEL({}, {}) }},\n'.format(f_mod, f_mod))
  
  # generic write func
  def print_fm(f, vendor, mod, f_name):
      f.write('    {{ DRM_MODIFIER({}, {}, {}) }},\n'.format(vendor, mod, f_name))
  
  with open(filename, "r") as f:
      data = f.read()
      for k, v in fm_re.items():
          fm_re[k] = re.findall(v, data, flags=re.M)
  
  with open(towrite, "w") as f:
      f.write('''\
  /* AUTOMATICALLY GENERATED by gen_table_fourcc.py. You should modify
     that script instead of adding here entries manually! */
  static const struct drmFormatModifierInfo drm_format_modifier_table[] = {
  ''')
      f.write('    { DRM_MODIFIER_INVALID(NONE, INVALID_MODIFIER) },\n')
      f.write('    { DRM_MODIFIER_LINEAR(NONE, LINEAR) },\n')
  
      for entry in fm_re['intel']:
          print_fm_intel(f, entry)
  
      for entry in fm_re['others']:
          (vendor, mod) = entry.split('_', 1)
          if vendor == 'ARM' and (mod == 'TYPE_AFBC' or mod == 'TYPE_MISC' or mod == 'TYPE_AFRC'):
              continue
          print_fm(f, vendor, mod, mod)
  
      f.write('''\
  };
  ''')
  
      f.write('''\
  static const struct drmFormatModifierVendorInfo drm_format_modifier_vendor_table[] = {
  ''')
  
      for entry in fm_re['vendors']:
          f.write("    {{ DRM_FORMAT_MOD_VENDOR_{}, \"{}\" }},\n".format(entry, entry))
  
      f.write('''\
  };
  ''')