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 import u_format_pack
  37
  38
  39 def layout_map(layout):
  40     return 'UTIL_FORMAT_LAYOUT_' + str(layout).upper()
  41
  42
  43 def colorspace_map(colorspace):
  44     return 'UTIL_FORMAT_COLORSPACE_' + str(colorspace).upper()
  45
  46
  47 colorspace_channels_map = {
  48     'rgb': ['r', 'g', 'b', 'a'],
  49     'srgb': ['sr', 'sg', 'sb', 'a'],
  50     'zs': ['z', 's'],
  51     'yuv': ['y', 'u', 'v'],
  52 }
  53
  54
  55 type_map = {
  56     VOID:     "UTIL_FORMAT_TYPE_VOID",
  57     UNSIGNED: "UTIL_FORMAT_TYPE_UNSIGNED",
  58     SIGNED:   "UTIL_FORMAT_TYPE_SIGNED",
  59     FIXED:    "UTIL_FORMAT_TYPE_FIXED",
  60     FLOAT:    "UTIL_FORMAT_TYPE_FLOAT",
  61 }
  62
  63
  64 def bool_map(value):
  65     if value:
  66         return "TRUE"
  67     else:
  68         return "FALSE"
  69
  70
  71 swizzle_map = {
  72     SWIZZLE_X:    "UTIL_FORMAT_SWIZZLE_X",
  73     SWIZZLE_Y:    "UTIL_FORMAT_SWIZZLE_Y",
  74     SWIZZLE_Z:    "UTIL_FORMAT_SWIZZLE_Z",
  75     SWIZZLE_W:    "UTIL_FORMAT_SWIZZLE_W",
  76     SWIZZLE_0:    "UTIL_FORMAT_SWIZZLE_0",
  77     SWIZZLE_1:    "UTIL_FORMAT_SWIZZLE_1",
  78     SWIZZLE_NONE: "UTIL_FORMAT_SWIZZLE_NONE",
  79 }
  80
  81
  82 def write_format_table(formats):
  83     print '/* This file is autogenerated by u_format_table.py from u_format.csv. Do not edit directly. */'
  84     print
  85     # This will print the copyright message on the top of this file
  86     print __doc__.strip()
  87     print
  88     print '#include "u_format.h"'
  89     print
  90     print '''
  91 static void
  92 util_format_none_unpack_8unorm(uint8_t *dst, const uint8_t *src, unsigned length)
  93 {
  94 }
  95
  96 static void
  97 util_format_none_pack_8unorm(uint8_t *dst, const uint8_t *src, unsigned length)
  98 {
  99 }
 100
 101 static void
 102 util_format_none_unpack_float(float *dst, const uint8_t *src, unsigned length)
 103 {
 104 }
 105
 106 static void
 107 util_format_none_pack_float(uint8_t *dst, const float *src, unsigned length)
 108 {
 109 }
 110
 111 static void
 112 util_format_none_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
 113 {
 114 }
 115     '''
 116     print 'const struct util_format_description'
 117     print 'util_format_none_description = {'
 118     print "   PIPE_FORMAT_NONE,"
 119     print "   \"PIPE_FORMAT_NONE\","
 120     print "   \"none\","
 121     print "   {0, 0, 0},"
 122     print "   0,"
 123     print "   0,"
 124     print "   0,"
 125     print "   0,"
 126     print "   0,"
 127     print "   {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}},"
 128     print "   {0, 0, 0, 0},"
 129     print "   0,"
 130     print "   &util_format_none_unpack_8unorm,"
 131     print "   &util_format_none_pack_8unorm,"
 132     print "   &util_format_none_unpack_float,"
 133     print "   &util_format_none_pack_float,"
 134     print "   &util_format_none_fetch_float"
 135     print "};"
 136     print
 137
 138     u_format_pack.generate(formats)
 139
 140     for format in formats:
 141         print 'const struct util_format_description'
 142         print 'util_format_%s_description = {' % (format.short_name(),)
 143         print "   %s," % (format.name,)
 144         print "   \"%s\"," % (format.name,)
 145         print "   \"%s\"," % (format.short_name(),)
 146         print "   {%u, %u, %u},\t/* block */" % (format.block_width, format.block_height, format.block_size())
 147         print "   %s," % (layout_map(format.layout),)
 148         print "   %u,\t/* nr_channels */" % (format.nr_channels(),)
 149         print "   %s,\t/* is_array */" % (bool_map(format.is_array()),)
 150         print "   %s,\t/* is_bitmask */" % (bool_map(format.is_bitmask()),)
 151         print "   %s,\t/* is_mixed */" % (bool_map(format.is_mixed()),)
 152         print "   {"
 153         for i in range(4):
 154             channel = format.channels[i]
 155             if i < 3:
 156                 sep = ","
 157             else:
 158                 sep = ""
 159             if channel.size:
 160                 print "      {%s, %s, %u}%s\t/* %s = %s */" % (type_map[channel.type], bool_map(channel.norm), channel.size, sep, "xyzw"[i], channel.name)
 161             else:
 162                 print "      {0, 0, 0}%s" % (sep,)
 163         print "   },"
 164         print "   {"
 165         for i in range(4):
 166             swizzle = format.swizzles[i]
 167             if i < 3:
 168                 sep = ","
 169             else:
 170                 sep = ""
 171             try:
 172                 comment = colorspace_channels_map[format.colorspace][i]
 173             except (KeyError, IndexError):
 174                 comment = 'ignored'
 175             print "      %s%s\t/* %s */" % (swizzle_map[swizzle], sep, comment)
 176         print "   },"
 177         print "   %s," % (colorspace_map(format.colorspace),)
 178         print "   &util_format_%s_unpack_8unorm," % format.short_name()
 179         print "   &util_format_%s_pack_8unorm," % format.short_name()
 180         print "   &util_format_%s_unpack_float," % format.short_name()
 181         print "   &util_format_%s_pack_float," % format.short_name()
 182         print "   &util_format_%s_fetch_float" % format.short_name()
 183         print "};"
 184         print
 185
 186     print "const struct util_format_description *"
 187     print "util_format_description(enum pipe_format format)"
 188     print "{"
 189     print "   if (format >= PIPE_FORMAT_COUNT) {"
 190     print "      return NULL;"
 191     print "   }"
 192     print
 193     print "   switch (format) {"
 194     print "   case PIPE_FORMAT_NONE:"
 195     print "      return &util_format_none_description;"
 196     for format in formats:
 197         print "   case %s:" % format.name
 198         print "      return &util_format_%s_description;" % (format.short_name(),)
 199     print "   default:"
 200     print "      assert(0);"
 201     print "      return NULL;"
 202     print "   }"
 203     print "}"
 204     print
 205
 206
 207 def main():
 208
 209     formats = []
 210     for arg in sys.argv[1:]:
 211         formats.extend(parse(arg))
 212     write_format_table(formats)
 213
 214
 215 if __name__ == '__main__':
 216     main()