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annotate img2tiles.py @ 2286:5d3411f52d00

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Fix ui.reload for locked-on ROMs
author Michael Pavone <pavone@retrodev.com>
date Fri, 13 Jan 2023 23:42:46 -0800
parents dbbf0100f249
children
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dbbf0100f249 Update img2tyles to use Python 3
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1 #!/usr/bin/env python3
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2 from PIL import Image
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3
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4 def gchannel(Val):
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5 return (Val >> 4) & 0xE
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6
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7 threshold = 127
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8
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9 def get_rgba(im, pixels=None, idx=None, color=None):
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10 A = 255
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11 if color is None:
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12 color = pixels[idx]
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13 if type(color) == int:
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14 R, G, B = im.getpalette()[color*3:color*3+3]
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15 else:
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16 if len(color) == 4:
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17 R, G, B, A = color
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18 elif len(color) == 3:
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19 R, G, B = color
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20 else:
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21 L, A = color
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22 R = G = B = L
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23 return (R, G, B, A)
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24
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25 def get_gcolor(im, threshold, pixels=None, idx=None, color=None):
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26 R,G,B,A = get_rgba(im, pixels, idx, color)
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27 if A > threshold:
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28 return (gchannel(R), gchannel(G), gchannel(B))
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29 return 0
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30
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31 def get_color_info(im, pixels, rng, threshold, exclude={}):
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32 gencolors = {}
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33 A = 255
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34 pal = None
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35 transparent = False
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36 for idx in rng:
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37 gcolor = get_gcolor(im, threshold, pixels, idx)
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38 if type(gcolor) == tuple:
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39 if not gcolor in exclude:
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40 if gcolor in gencolors:
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41 gencolors[gcolor] += 1
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42 else:
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43 gencolors[gcolor] = 1
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44 else:
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45 transparent = True
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46 glist = [(gencolors[color], color) for color in gencolors]
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47 glist.sort()
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48 glist.reverse()
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49 return glist
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51 def get_color_info_both(im, pixels, rng, threshold, exclude={}):
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52 gencolors = {}
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53 A = 255
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54 pal = None
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55 transparent = False
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56 for idx in rng:
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57 gcolor = get_gcolor(im, threshold, pixels, idx)
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58 if type(gcolor) == tuple:
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59 if not gcolor in exclude:
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60 if not gcolor in gencolors:
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61 _,best = best_match(gcolor, (exclude,))
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62 gencolors[gcolor] = (color_dist(gcolor, best), 1)
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63 else:
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64 (dist, count) = gencolors[gcolor]
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65 gencolors[gcolor] = (dist, count+1)
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66 else:
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67 transparent = True
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68 glist = [(gencolors[color][0] * gencolors[color][1], color) for color in gencolors]
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69 glist.sort()
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70 glist.reverse()
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71
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72 return glist
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73
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74 def make_palette(im, trans_thresh, max_global, max_line):
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75 pixels = im.getdata()
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76 (width, height) = im.size
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77 colors = get_color_info(im, pixels, range(0, height * width), trans_thresh)
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78 print(len(colors), 'distinct 9-bit colors in image')
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79 glob_pal = {}
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80 print('Static Palette:')
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81 while len(glob_pal) < max_global and len(colors):
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82 idx = len(glob_pal)
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83 (count, color) = colors[0]
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84 print(str(idx) + ':', color)
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85 glob_pal[color] = idx
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86 colors = get_color_info_both(im, pixels, range(0, height * width), trans_thresh, glob_pal)
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87 line_pals = []
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88 if max_global < len(colors):
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89 for line in range(0, height):
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90 linestart = line * width
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91 if len(glob_pal):
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92 linecolors = get_color_info_both(im, pixels, range(linestart, linestart+width), trans_thresh, glob_pal)
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93 else:
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94 linecolors = get_color_info(im, pixels, range(linestart, linestart+width), trans_thresh)
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95 line_pal = {}
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96 while len(line_pal) < max_line and len(linecolors):
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97 (score, color) = linecolors[0]
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98 line_pal[color] = len(line_pal) + max_global
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99 if len(line_pal) < max_line:
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100 combo = dict(glob_pal)
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101 for color in line_pal:
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102 combo[color] = line_pal[color]
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103 linecolors = get_color_info_both(im, pixels, range(linestart, linestart+width), trans_thresh, combo)
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104 #for idx in range(0, min(max_line, len(linecolors))):
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105 # (count, color) = linecolors[idx]
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106 # line_pal[color] = idx + max_global
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107 line_pals.append(line_pal)
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108 return (glob_pal, line_pals, max_global, max_line)
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109
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110 def color_dist(a, b):
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111 (ra, ga, ba) = a
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112 (rb, gb, bb) = b
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113 return (ra-rb)**2 + (ga-gb)**2 + (ba-bb)**2
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114
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115 def best_match(gpixel, pals):
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116 bestdist = color_dist((0,0,0), (15, 15, 15))
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117 bestpalidx = 0
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118 bestcolor = (0,0,0)
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119 for i in range(0, len(pals)):
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120 pal = pals[i]
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121 for cur in pal:
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122 curdist = color_dist(gpixel, cur)
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123 if curdist < bestdist:
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124 bestdist = curdist
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125 bestpalidx = pal[cur]
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126 bestcolor = cur
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127 return (bestpalidx, bestcolor)
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128
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129 def trans_image(im, trans_thresh, pal, chunky):
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130 (global_pal, line_pals, _, _) = pal
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131 pixels = im.getdata()
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132 (width, height) = im.size
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133 gpixels = []
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134 A = 255
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135 pal = None
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136 x = 0
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137 y = 0
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138 numchannels = len(im.getbands())
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diff changeset
139 offset = 1 if numchannels == 4 or numchannels == 2 else 0
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140 for pixel in pixels:
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diff changeset
141 if x == width:
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142 x = 0
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143 y += 1
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144 if width % 8 and not chunky:
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145 for i in range(0, 8-(width%8)):
864
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146 gpixels.append(0)
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diff changeset
147 gpixel = get_gcolor(im, trans_thresh, color=pixel)
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148 if type(gpixel) == tuple:
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149 if gpixel in global_pal:
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diff changeset
150 val = global_pal[gpixel]
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diff changeset
151 elif gpixel in line_pals[y]:
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diff changeset
152 val = line_pals[y][gpixel]
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153 else:
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diff changeset
154 bestpal,color = best_match(gpixel, (global_pal, line_pals[y]))
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diff changeset
155 val = bestpal
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156 gpixels.append(offset+val)
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157 else:
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158 gpixels.append(gpixel)
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159 x += 1
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160 if width % 8 and not chunky:
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161 for i in range(0, 8-(width%8)):
864
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162 gpixels.append(0)
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163 width += 8-(width%8)
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164 if height % 8 and not chunky:
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165 for y in range(0, 8-(height%8)):
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166 for x in range(0, width):
864
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167 gpixels.append(0)
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168 height += 8-(height%8)
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169
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diff changeset
170 return (width, height, gpixels)
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171
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172 def appendword(b, word):
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173 b.append(word >> 8)
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174 b.append(word & 0xff)
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175
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176 def to_tiles(palpix, raw=False, chunky=False, tile_height=8, sprite_order = False):
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177 (width, height, pixels) = palpix
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178 b = bytearray()
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179 if chunky:
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180 if not raw:
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181 appendword(b, width)
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diff changeset
182 appendword(b, height)
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183 for pixel in pixels:
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184 b.append(pixel)
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185 else:
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186 cwidth = width//8
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187 cheight = height//tile_height
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188 words = len(pixels)//4
864
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189 if not raw:
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diff changeset
190 appendword(b, words)
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diff changeset
191 appendword(b, cwidth)
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diff changeset
192 appendword(b, cheight)
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diff changeset
193
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194 if sprite_order:
2050
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195 for cx in range(0, cwidth):
864
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196 xstart = cx * 8
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197 for cy in range(0, cheight):
864
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198 startoff = cy*tile_height*width + xstart
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199 for row in range(0, tile_height):
864
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200 rowoff = startoff + row*width
2050
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201 for bytecol in range(0, 4):
864
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202 boff = bytecol * 2 + rowoff
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203 #print('boff:', boff, 'len(pixels)', len(pixels), 'cx', cx, 'cy', cy, 'cwidth', cwidth, 'cheight', cheight)
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204 #print('pixels[boff]:', pixels[boff])
864
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205 b.append(pixels[boff] << 4 | pixels[boff+1])
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206 else:
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207 for cy in range(0, cheight):
864
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208 ystart = cy*tile_height*width
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209 for cx in range(0, cwidth):
864
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diff changeset
210 startoff = (cx*8) + ystart
2050
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211 for row in range(0, tile_height):
864
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diff changeset
212 rowoff = startoff + row*width
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213 for bytecol in range(0, 4):
864
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214 boff = bytecol * 2 + rowoff
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215 #print('boff:', boff, 'len(pixels)', len(pixels), 'cx', cx, 'cy', cy, 'cwidth', cwidth, 'cheight', cheight)
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216 #print('pixels[boff]:', pixels[boff])
864
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diff changeset
217 b.append(pixels[boff] << 4 | pixels[boff+1])
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parents:
diff changeset
218 return b
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diff changeset
219
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diff changeset
220 def add_pal_entries(tiles, pal):
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diff changeset
221 (global_pal, line_pals, max_global, max_line) = pal
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diff changeset
222 tiles.append(max_global)
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parents:
diff changeset
223 tiles.append(max_line)
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diff changeset
224 pal_list = [(0, 0, 0)] * max_global
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parents:
diff changeset
225 for entry in global_pal:
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diff changeset
226 pal_list[global_pal[entry]] = entry
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parents:
diff changeset
227 for entry in pal_list:
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diff changeset
228 (R, G, B) = entry
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diff changeset
229 tiles.append(B)
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Michael Pavone <pavone@retrodev.com>
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diff changeset
230 tiles.append(G << 4 | R)
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
231 for line in line_pals:
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parents:
diff changeset
232 pal_list = [(0, 0, 0)] * max_line
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parents:
diff changeset
233 for entry in line:
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parents:
diff changeset
234 pal_list[line[entry]-max_global] = entry
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parents:
diff changeset
235 for entry in pal_list:
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parents:
diff changeset
236 (R, G, B) = entry
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parents:
diff changeset
237 tiles.append(B)
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diff changeset
238 tiles.append(G << 4 | R)
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parents:
diff changeset
239
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parents:
diff changeset
240
40703069bb68 Get everything needed to build menu.bin either committed or buildable via the Makefile
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diff changeset
241
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
242 def main(argv):
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diff changeset
243
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diff changeset
244 posargs = []
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diff changeset
245 omit_pal = raw = chunky = False
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parents:
diff changeset
246 expect_option = None
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parents:
diff changeset
247 options = {}
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parents:
diff changeset
248 tile_height = 8
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diff changeset
249 sprite_order = False
2050
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250 for i in range(1, len(argv)):
864
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diff changeset
251 if argv[i].startswith('-'):
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Michael Pavone <pavone@retrodev.com>
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diff changeset
252 if argv[i] == '-r':
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diff changeset
253 raw = True
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diff changeset
254 elif argv[i] == '-p':
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diff changeset
255 omit_pal = True
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parents:
diff changeset
256 elif argv[i] == '-o':
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diff changeset
257 sprite_order = True
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diff changeset
258 elif argv[i] == '-c':
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diff changeset
259 chunky = True
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diff changeset
260 elif argv[i] == '-i':
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parents:
diff changeset
261 tile_height = 16
40703069bb68 Get everything needed to build menu.bin either committed or buildable via the Makefile
Michael Pavone <pavone@retrodev.com>
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262 elif argv[i] == '-s' or argv[i] == '--spec':
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263 expect_option = 'specfile'
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264 else:
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265 print('Unrecognized switch', argv[i])
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266 return
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267 elif not expect_option is None:
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268 options[expect_option] = argv[i]
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269 expect_option = None
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270 else:
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271 posargs.append(argv[i])
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272 if len(posargs) < 2 and not ('specfile' in options and len(posargs) >= 1):
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273 print("Usage: img2tiles.py [OPTIONS] infile outfile [STATIC_COLORS [DYNAMIC_COLORS]]")
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274 return
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275 if 'specfile' in options:
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276 props = open(options['specfile']).read().strip().split(',')
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277 fname,static_colors,dynamic_colors = props[0:3]
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278 for prop in props[3:]:
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279 if prop == 'chunky':
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280 chunky = True
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281 elif prop == 'raw':
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282 raw = True
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283 elif prop == 'nopal':
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284 omit_pal = True
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285 elif prop == 'interlace':
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286 tile_height = 16
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287 elif prop == 'sprite':
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288 sprite_order = True
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289 static_colors = int(static_colors)
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290 dynamic_colors = int(dynamic_colors)
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291 outfile = posargs[0]
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292 else:
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293 fname = posargs[0]
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294 outfile = posargs[1]
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295 static_colors = 8
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296 dynamic_colors = 8
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297 if len(posargs) > 2:
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298 static_colors = int(posargs[2])
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299 dynamic_colors = 16-static_colors
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300 if len(posargs) > 3:
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301 dynamic_colors = int(posargs[3])
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302 if dynamic_colors + static_colors > 16:
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303 print("No more than 16 combined dynamic and static colors are allowed")
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304 return
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305 im = Image.open(fname)
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306 pal = make_palette(im, threshold, static_colors, dynamic_colors)
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307 palpix = trans_image(im, threshold, pal, chunky)
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308 tiles = to_tiles(palpix, raw, chunky, tile_height, sprite_order)
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309 if not omit_pal:
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310 bits = add_pal_entries(tiles, pal)
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311 out = open(outfile, 'wb')
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312 out.write(tiles)
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313
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314 if __name__ == '__main__':
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315 import sys
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316 main(sys.argv)