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| -rwxr-xr-x | gifterm.py | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/gifterm.py b/gifterm.py new file mode 100755 index 0000000..04e7c04 --- /dev/null +++ b/gifterm.py @@ -0,0 +1,106 @@ +#!/usr/bin/env python + +import os, sys, argparse, os.path, json, time, signal, atexit +#NOTE: This script uses pygments for RGB->X256 conversion since pygments is +#readily available. If you do not like pygments (e.g. because it is large), +#you could patch in something like https://github.com/magarcia/python-x256 +#(but don't forget to send me a pull request ;) +from pygments.formatters import terminal256 +from PIL import Image, GifImagePlugin, ImageSequence + +formatter = terminal256.Terminal256Formatter() +reset_sequence = terminal256.EscapeSequence(fg=formatter._closest_color(0,0,0), bg=formatter._closest_color(0,0,0)).reset_string() +clear_screen = '\033[H\033[2J' +cursor_invisible = '\033[?25l' +cursor_visible = '\033[?25h' + +def termify_pixels(img): + sx, sy = img.size + out = '' + + fg,bg = None,None + fgd,bgd = {},{} + def bgescape(color): + nonlocal bg, bgd + if bg == color: + return '' + bg=color + if color == (0,0,0,0): + return '\033[49m' + if color in bgd: + return bgd[color] + r,g,b,_ = color + bgd[color] = '\033[48;5;'+str(formatter._closest_color(r,g,b))+'m' + return bgd[color] + + def fgescape(color): + nonlocal fg, fgd + if fg == color: + return '' + fg=color + r,g,b,_ = color + fgd[color] = '\033[38;5;'+str(formatter._closest_color(r,g,b))+'m' + return fgd[color] + + def balloon(x,y): + if x+1 == img.size[0] or img.im.getpixel((x+1, y)) != (0,255,0,127): + w = 1 + while x-w >= 0 and img.im.getpixel((x-w, y)) == (0,255,0,127): + w += 1 + return '$balloon{}$'.format(w) + return '' + + for y in range(0, sy, 2): + for x in range(sx): + coltop = img.im.getpixel((x, y)) + colbot = img.im.getpixel((x, y+1)) if y+1 < img.size[1] else (0,0,0,0) + + if coltop[3] == 127: #Control colors + out += reset_sequence + out += {(255, 0, 0, 127): lambda x,y:'$\\$', + (0, 0, 255, 127): lambda x,y:'$/$', + (0, 255, 0, 127): balloon + }.get(coltop, lambda x,y:' ')(x,y) + continue + + if coltop[3] != 255: + coltop = (0,0,0,0) + if colbot[3] != 255: + colbot = (0,0,0,0) + + #Da magicks: ▀█▄ + c,cf = '▀','█' + te,be = fgescape,bgescape + if coltop == (0,0,0,0) or ((coltop == bg or colbot == fg) and not colbot == (0,0,0,0)): + c,cf,te,be = '▄',' ',be,te + if colbot == coltop: + c,te,be = cf,te,te + out += te(coltop) + be(colbot) + c + out = out.rstrip() + '\n' + return out[:-1] + reset_sequence + '\n' + +if __name__ == '__main__': + parser = argparse.ArgumentParser(description='Render pixel images on 256-color ANSI terminals') + parser.add_argument('image', type=str) + args = parser.parse_args() + img = Image.open(args.image) + frames = [] + palette = img.getpalette() + for frame in ImageSequence.Iterator(img): + f = frame.copy() + #This works around a known bug in Pillow + #See also: http://stackoverflow.com/questions/4904940/python-converting-gif-frames-to-png + f.putpalette(palette) + f = f.convert("RGBA") + frames.append(termify_pixels(f)) + + print(cursor_invisible) + atexit.register(lambda:print(cursor_visible)) + signal.signal(signal.SIGTERM, lambda signum, stack_frame: exit(1)) + + while True: + for frame in frames: + print(clear_screen, reset_sequence) + print(frame) + time.sleep(img.info['duration']/1000.0) + |