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-rwxr-xr-xgifterm.py106
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)
+