src/gallium/auxiliary/util/u_format_table.py

   1 #!/usr/bin/env python
   2
   3 '''
   4 /**************************************************************************
   5  *
   6  * Copyright 2009 VMware, Inc.
   7  * All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the
  11  * "Software"), to deal in the Software without restriction, including
  12  * without limitation the rights to use, copy, modify, merge, publish,
  13  * distribute, sub license, and/or sell copies of the Software, and to
  14  * permit persons to whom the Software is furnished to do so, subject to
  15  * the following conditions:
  16  *
  17  * The above copyright notice and this permission notice (including the
  18  * next paragraph) shall be included in all copies or substantial portions
  19  * of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  22  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  24  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  25  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  26  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  27  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28  *
  29  **************************************************************************/
  30 '''
  31
  32
  33 import sys
  34
  35 from u_format_parse import *
  36
  37
  38 def layout_map(layout):
  39     return 'UTIL_FORMAT_LAYOUT_' + str(layout).upper()
  40
  41
  42 def colorspace_map(colorspace):
  43     return 'UTIL_FORMAT_COLORSPACE_' + str(colorspace).upper()
  44
  45
  46 colorspace_channels_map = {
  47     'rgb': ['r', 'g', 'b', 'a'],
  48     'srgb': ['sr', 'sg', 'sb', 'a'],
  49     'zs': ['z', 's'],
  50     'yuv': ['y', 'u', 'v'],
  51 }
  52
  53
  54 type_map = {
  55     VOID:     "UTIL_FORMAT_TYPE_VOID",
  56     UNSIGNED: "UTIL_FORMAT_TYPE_UNSIGNED",
  57     SIGNED:   "UTIL_FORMAT_TYPE_SIGNED",
  58     FIXED:    "UTIL_FORMAT_TYPE_FIXED",
  59     FLOAT:    "UTIL_FORMAT_TYPE_FLOAT",
  60 }
  61
  62
  63 def bool_map(value):
  64     if value:
  65         return "TRUE"
  66     else:
  67         return "FALSE"
  68
  69
  70 swizzle_map = {
  71     SWIZZLE_X:    "UTIL_FORMAT_SWIZZLE_X",
  72     SWIZZLE_Y:    "UTIL_FORMAT_SWIZZLE_Y",
  73     SWIZZLE_Z:    "UTIL_FORMAT_SWIZZLE_Z",
  74     SWIZZLE_W:    "UTIL_FORMAT_SWIZZLE_W",
  75     SWIZZLE_0:    "UTIL_FORMAT_SWIZZLE_0",
  76     SWIZZLE_1:    "UTIL_FORMAT_SWIZZLE_1",
  77     SWIZZLE_NONE: "UTIL_FORMAT_SWIZZLE_NONE",
  78 }
  79
  80
  81 def write_format_table(formats):
  82     print '/* This file is autogenerated by u_format_table.py from u_format.csv. Do not edit directly. */'
  83     print
  84     # This will print the copyright message on the top of this file
  85     print __doc__.strip()
  86     print
  87     print '#include "u_format.h"'
  88     print
  89     print 'const struct util_format_description'
  90     print 'util_format_none_description = {'
  91     print "   PIPE_FORMAT_NONE,"
  92     print "   \"PIPE_FORMAT_NONE\","
  93     print "   \"none\","
  94     print "   {0, 0, 0},"
  95     print "   0,"
  96     print "   0,"
  97     print "   0,"
  98     print "   0,"
  99     print "   {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}},"
 100     print "   {0, 0, 0, 0},"
 101     print "   0"
 102     print "};"
 103     print
 104     for format in formats:
 105         print 'const struct util_format_description'
 106         print 'util_format_%s_description = {' % (format.short_name(),)
 107         print "   %s," % (format.name,)
 108         print "   \"%s\"," % (format.name,)
 109         print "   \"%s\"," % (format.short_name(),)
 110         print "   {%u, %u, %u},\t/* block */" % (format.block_width, format.block_height, format.block_size())
 111         print "   %s," % (layout_map(format.layout),)
 112         print "   %u,\t/* nr_channels */" % (format.nr_channels(),)
 113         print "   %s,\t/* is_array */" % (bool_map(format.is_array()),)
 114         print "   %s,\t/* is_mixed */" % (bool_map(format.is_mixed()),)
 115         print "   {"
 116         for i in range(4):
 117             channel = format.channels[i]
 118             if i < 3:
 119                 sep = ","
 120             else:
 121                 sep = ""
 122             if channel.size:
 123                 print "      {%s, %s, %u}%s\t/* %s = %s */" % (type_map[channel.type], bool_map(channel.norm), channel.size, sep, "xyzw"[i], channel.name)
 124             else:
 125                 print "      {0, 0, 0}%s" % (sep,)
 126         print "   },"
 127         print "   {"
 128         for i in range(4):
 129             swizzle = format.swizzles[i]
 130             if i < 3:
 131                 sep = ","
 132             else:
 133                 sep = ""
 134             try:
 135                 comment = colorspace_channels_map[format.colorspace][i]
 136             except (KeyError, IndexError):
 137                 comment = 'ignored'
 138             print "      %s%s\t/* %s */" % (swizzle_map[swizzle], sep, comment)
 139         print "   },"
 140         print "   %s," % (colorspace_map(format.colorspace),)
 141         print "};"
 142         print
 143     print "const struct util_format_description *"
 144     print "util_format_description(enum pipe_format format)"
 145     print "{"
 146     print "   if (format >= PIPE_FORMAT_COUNT) {"
 147     print "      return NULL;"
 148     print "   }"
 149     print
 150     print "   switch (format) {"
 151     print "   case PIPE_FORMAT_NONE:"
 152     print "      return &util_format_none_description;"
 153     for format in formats:
 154         print "   case %s:" % format.name
 155         print "      return &util_format_%s_description;" % (format.short_name(),)
 156     print "   default:"
 157     print "      assert(0);"
 158     print "      return NULL;"
 159     print "   }"
 160     print "}"
 161     print
 162
 163
 164 def main():
 165
 166     formats = []
 167     for arg in sys.argv[1:]:
 168         formats.extend(parse(arg))
 169     write_format_table(formats)
 170
 171
 172 if __name__ == '__main__':
 173     main()