pylib/gfxprim/generators/core/make_GP_Pixel.py

   1 #!/usr/bin/python
   2 #
   3 # Script generating:
   4 #
   5 #  GP_Pixel.gen.c, GP_Pixel.gen.h
   6 #  GP_Pixel_Scale.gen.h
   7 #  GP_Pixel_Access.gen.h
   8 #
   9 # 2011 - Tomas Gavenciak <gavento@ucw.cz>
  10 #
  11
  12 from gfxprim.generators.generator import *
  13 from gfxprim.generators.pixeltype import *
  14 from gfxprim.generators.core.gen_pixeltype import *
  15 from gfxprim.generators.core.gen_pixel_access import *
  16
  17 @generator(CHeaderGenerator(name = 'GP_Pixel_Scale.gen.h'),
  18            descr = 'Fast value scaling macros\nDo not include directly, use GP_Pixel.h',
  19            authors = ["2011 - Tomas Gavenciak <gavento@ucw.cz>"])
  20 def core_GP_Pixel_Scale_gen(h):
  21   h.rhead(
  22     "/* helper macros to transfer s1-bit value to s2-bit value\n"
  23     " * NOTE: efficient and accurate for both up- and downscaling,\n"
  24     " * WARNING: GP_SCALE_VAL requires constants numebrs as first two parameters\n"
  25     " */\n"
  26     "#define GP_SCALE_VAL(s1, s2, val) ( GP_SCALE_VAL_##s1##_##s2(val) )\n\n"
  27
  28     "{% for s1 in [1, 2, 4, 8] %}{% for s2 in [1, 2, 4, 8] %}"
  29       "{% if s2>s1 %}"
  30         "#define GP_SCALE_VAL_{{s1}}_{{s2}}(val) ((val) * {{ multcoef(s1, s2) }})\n"
  31       "{% else %}"
  32         "#define GP_SCALE_VAL_{{s1}}_{{s2}}(val) ((val) >> {{ s1 - s2 }})\n"
  33       "{% endif %}"
  34     "{% endfor %}{% endfor %}", multcoef = lambda s1,s2: hex(sum([1<<i*s1 for i in range(s2/s1)]))
  35     )
  36
  37 @generator(CHeaderGenerator(name='GP_Pixel.gen.h'),
  38            CSourceGenerator(name='GP_Pixel.gen.c'),
  39            descr = 'Pixel type definitions and functions\nDo not include directly, use GP_Pixel.h',
  40            authors = ["2011 - Tomas Gavenciak <gavento@ucw.cz>"])
  41 def core_GP_Pixel_gen(h, c):
  42   c.rhead(
  43     '#include <stdio.h>\n'
  44     '#include "GP_Pixel.h"\n\n')
  45
  46   ## Enum of types
  47   gen_GP_PixelType(h, c)
  48
  49   ## PixelType parameters in C
  50   gen_GP_PixelTypes(h, c)
  51
  52   ## List of types
  53   for t in pixeltypes.values():
  54     if t.name != 'UNKNOWN':
  55       h.rbody(str_start(t))
  56       h.rbody(str_description(t))
  57       c.rbody(str_start(t))
  58       c.rbody(str_description(t))
  59
  60       gen_print(t, h, c)
  61       gen_get_chs(t, h, c)
  62       gen_get_pixel_addr(t, h, c)
  63
  64   ## Conversion macros
  65   gen_convert_to(pixeltypes['RGB565'], pixeltypes['RGBA8888'], h, c)
  66   gen_convert_to(pixeltypes['RGBA8888'], pixeltypes['V2'], h, c)
  67   gen_convert_to(pixeltypes['VA12'], pixeltypes['RGBA8888'], h, c)
  68
  69
  70 @generator(CHeaderGenerator(name = 'GP_GetPutPixel.gen.h'),
  71            descr = 'Access pixel bytes, Get and PutPixel\nDo not include directly, use GP_Pixel.h',
  72            authors = ["2011 - Tomas Gavenciak <gavento@ucw.cz>"])
  73 def core_GP_Pixel_Scale_gen(h):
  74   h.rhead('#include "GP_Common.h"\n\n');
  75   h.rhead('struct GP_Context;\n\n');
  76   # Per-bpp adress/offset macros
  77   for bpp in bitsizes:
  78     for bit_endian in bit_endians:
  79       if (bpp < 8) or (bit_endian == bit_endians[0]):
  80         gen_get_pixel_addr_bpp(bpp, get_size_suffix(bpp, bit_endian), h)
  81
  82   # Per-bpp adress/offset macros
  83   for bpp in bitsizes:
  84     for bit_endian in bit_endians:
  85       if (bpp < 8) or (bit_endian == bit_endians[0]):
  86         gen_getpixel_bpp(bpp, get_size_suffix(bpp, bit_endian), h)
  87         gen_putpixel_bpp(bpp, get_size_suffix(bpp, bit_endian), h)
  88