#!/usr/bin/env ipython3 from pylab import * from numpy import * from matplotlib.image import imread # color is forced to be 0123 red gray mauve black and we need to compensate ''' 0 red (global) 1 gray 2 mauve 3 black ''' permutation = int32([3,2,2,1]) FONT_HEIGHT = 16 def write_table_bytes(f,a,cspan=16): a = array(a).ravel() nrows = int(ceil(a.shape[0]/cspan)) for row in range(nrows): bb = a[row*cspan:(row+1)*cspan] s = ','.join(['$%02X'%b for b in bb]) f.write('\t!byte ' + s + '\n') f.write('\n') def padto4(a): w = int32(ceil(a.shape[1]/4))*4 foo = int32(zeros((FONT_HEIGHT,w))) foo[:,:a.shape[1]]=a return foo def pack_label(a): ''' Pack label in blitting order. Labels start as FONT_HEIGHT x W arrays Round W up to multiple of 4 Group columns into 4 Pack bytes Extract top, bottom blocks a = im[:,:28] a = pack_label(a) close('all') a = a.reshape(a.shape[0]//8,8) #imshow(a);show(block=True) # should be 5 butes of 0xff then a bute of # 0001 0101 = 0x15 = 21 # byte 15 should be # 0 0 1 3 # 3 3 2 1 # 1111 1001 # F9 = 249 # should end in # 1 3 3 3 # 2 1 1 1 # 1001 0101 # 0x95 = 149 print(a.flat[15]) print(a) ''' a = padto4(a) H,W = a.shape a = a.reshape( H, W//4, 4) a = permutation[a] a = (a[...,0]<<6)|(a[...,1]<<4)|(a[...,2]<<2)|(a[...,3]<<0) top = a[:8,:].T.flat bot = a[8:,:].T.flat a = concatenate([top,bot]) return a # labels are packed monolithically def write_label(name,a): W0 = a.shape[1]*2 a = pack_label(a) W = prod(a.shape)//2 f.write('%s_RAW_WIDTH = %d\n'%(name,W0)) f.write('%s_PAD_WIDTH = %d\n'%(name,W)) f.write('\t!byte %d\n'%W0) f.write('\t!byte %d\n'%W) f.write('%s:\n'%name) cspan = FONT_HEIGHT for bb in a.reshape(prod(a.shape)//cspan,cspan): f.write('\t!byte ' + ','.join(['$%02X'%b for b in bb]) + '\n') f.write('\n') #1234567890ABCDEF def pack_font(a): a = padto4(a) a = a.reshape( FONT_HEIGHT, a.shape[1]//4, 4) a = permutation[a] a = (a[...,0]<<6)|(a[...,1]<<4)|(a[...,2]<<2)|(a[...,3]<<0) a = a.T return a # fonts are packed as separate width 4 characters def write_font(name,a): W0 = a.shape[1]*2 a = pack_font(a) W = prod(a.shape)//2 f.write('%s_RAW_WIDTH = %d\n'%(name,W0)) f.write('%s_PAD_WIDTH = %d\n'%(name,W)) f.write('\t!byte %d\n'%W0) f.write('\t!byte %d\n'%W) f.write('%s:\n'%name) cspan = FONT_HEIGHT for bb in a.reshape(prod(a.shape)//cspan,cspan): f.write('\t!byte ' + ','.join(['$%02X'%b for b in bb]) + '\n') f.write('\n') im = imread('text.png')[...,:3] # Hide magenta rules magenta = all(int32(np.round(im))==[1,0,1],-1) im[magenta,:] = [0,0,0] # Average to width 2 pixels im = sum(im[:,:,:3],axis=2) im = (im[:,1::2]+im[:,0::2])/2 im = int32(np.round(im+.1)) # Split out the rows IMW = im.shape[-1] NROW = im.shape[0]//FONT_HEIGHT print('nrows',NROW) im = im.reshape(NROW,FONT_HEIGHT,IMW) pwidths = int32([1+(where(any(r,0))[0][-1]|3) for r in im]) bwidths = pwidths//4 rows = [r[:,:w] for r,w in zip(im,pwidths)] zlabel = rows[0] rlabel = rows[1] ilabel = rows[2] digits = rows[3] fpslabel = rows[4] interlace = rows[5] looplabel = rows[6] _ = rows[7] _ = rows[8] ZXCV = rows[9] Z,X,C,V,I,J,K,L,F = ZXCV.reshape(16,9,8).transpose(1,0,2) with open('fontscratch.asm', 'w') as f: f.write('\n') f.write('\n') f.write('FONT_HEIGHT = %d\n\n'%FONT_HEIGHT) write_label('EQUATION',zlabel ) write_label('REALEQ' ,rlabel ) write_label('IMAGEQ' ,ilabel ) write_label('FPSLABEL',fpslabel) write_label('LACELABEL',interlace) write_label('LOOPLABEL',looplabel) write_label('ZKEY',Z) write_label('XKEY',X) write_label('CKEY',C) write_label('VKEY',V) write_label('IKEY',I) write_label('JKEY',J) write_label('KKEY',K) write_label('LKEY',L) write_label('FKEY',F) f.write('\n') f.write('\n') with open('fontdata.asm', 'w') as f: f.write('\n') f.write('\n') write_font ('DIGITS' ,digits) f.write('\n') f.write('\n') # This is a decimal converstion table for (real,imag) parts of +1 NDIGITS = 6 NBITS = 6 scale = 1/64*10**NDIGITS N = 1<