Stopped images having their height halved when using blocky printing
[rainbowstream.git] / rainbowstream / c_image.py
CommitLineData
0418d443 1from PIL import Image
60431c3b 2from os.path import join, dirname, getmtime, exists, expanduser
816e305f 3from .config import *
13e6b275 4from .py3patch import *
60431c3b 5
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6import ctypes
7import sys
8import os
9
60431c3b 10
11def call_c():
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12 """
13 Call the C program for converting RGB to Ansi colors
14 """
60431c3b 15 library = expanduser('~/.image.so')
16 sauce = join(dirname(__file__), 'image.c')
17 if not exists(library) or getmtime(sauce) > getmtime(library):
4a885ebf 18 build = "cc -fPIC -shared -o %s %s" % (library, sauce)
bb68c687 19 os.system(build + " >/dev/null 2>&1")
991c30af 20 image_c = ctypes.cdll.LoadLibrary(library)
60431c3b 21 image_c.init()
22 return image_c.rgb_to_ansi
23
24rgb2short = call_c()
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25
26
60431c3b 27def pixel_print(ansicolor):
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28 """
29 Print a pixel with given Ansi color
30 """
60431c3b 31 sys.stdout.write('\033[48;5;%sm \033[0m' % (ansicolor))
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32
33
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34def block_print(lower, higher):
35 """
36 Print two pixels arranged above each other with Ansi color.
37 Abuses Unicode to print two pixels in the space of one terminal block.
38 """
39 sys.stdout.write('\033[38;5;%sm\033[48;5;%smâ–„\033[0m' % (higher, lower))
40
41
422dd385 42def image_to_display(path, start=None, length=None):
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43 """
44 Display an image
45 """
4592d231 46 rows, columns = os.popen('stty size', 'r').read().split()
47 if not start:
632c6fa5 48 start = c['IMAGE_SHIFT']
4592d231 49 if not length:
50 length = int(columns) - 2 * start
991c30af 51 i = Image.open(path)
60431c3b 52 i = i.convert('RGBA')
991c30af 53 w, h = i.size
60431c3b 54 i.load()
4592d231 55 width = min(w, length)
60431c3b 56 height = int(float(h) * (float(width) / float(w)))
f5677fb1 57 i = i.resize((width, height), Image.ANTIALIAS)
632c6fa5 58 height = min(height, c['IMAGE_MAX_HEIGHT'])
60431c3b 59
a3cf675b 60 for real_y in xrange(height // 2):
c3bab4ef 61 sys.stdout.write(' ' * start)
13e6b275 62 for x in xrange(width):
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63 y = real_y * 2
64 p0 = i.getpixel((x, y))
65 p1 = i.getpixel((x, y+1))
66 r0, g0, b0 = p0[:3]
67 r1, g1, b1 = p1[:3]
68 block_print(rgb2short(r0, g0, b0), rgb2short(r1, g1, b1))
c3bab4ef 69 sys.stdout.write('\n')
60431c3b 70
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71
72"""
73For direct using purpose
74"""
60431c3b 75if __name__ == '__main__':
76 image_to_display(sys.argv[1])