def write_animation(self, filename_out):
if not self.frames: return
webp.save_images(self.frames,
filename_out,
fps=self.fps,
quality=self.quality,
preset=self.preset)
def test_anim_image_palette(self, image_bars_palette):
with TemporaryDirectory() as tmpdir:
file_name = os.path.join(tmpdir, 'image.webp')
assert image_bars_palette.mode == 'P'
webp.save_images([image_bars_palette] * 3, file_name, lossless=True)
dec_imgs = webp.load_images(file_name, 'RGBA')
actual = np.asarray(dec_imgs[0], dtype=np.uint8)
image_bars_rgba = image_bars_palette.convert('RGBA')
expected = np.asarray(image_bars_rgba, dtype=np.uint8)
assert_array_equal(actual, expected)
def test_anim_simple_resample(self):
width = 256
height = 64
img1 = Image.new('RGB', (width, height))
draw = ImageDraw.Draw(img1)
draw.rectangle([0, 0, width-1, height-1], fill=(0, 0, 255))
draw.rectangle([0, 0, (width/4-1), height-1], fill=(255, 0, 0))
img2 = Image.new('RGB', (width, height))
draw = ImageDraw.Draw(img2)
draw.rectangle([0, 0, width-1, height-1], fill=(0, 0, 255))
draw.rectangle([0, 0, (width/4-1), height-1], fill=(0, 255, 0))
imgs = [img1, img1, img2, img2]
with TemporaryDirectory() as tmpdir:
file_name = os.path.join(tmpdir, 'anim.webp')
webp.save_images(imgs, file_name, fps=4, lossless=True)
dec_imgs = webp.load_images(file_name, 'RGBA', fps=4)
assert len(dec_imgs) == 4
def test_anim_simple(self):
imgs = []
width = 256
height = 64
for i in range(4):
img = Image.new('RGBA', (width, height))
draw = ImageDraw.Draw(img)
draw.rectangle([0, 0, width-1, height-1], fill=(0, 0, 255))
x = i * (width/4)
draw.rectangle([x, 0, x + (width/4-1), height-1], fill=(255, 0, 0))
imgs.append(img)
with TemporaryDirectory() as tmpdir:
file_name = os.path.join(tmpdir, 'anim.webp')
webp.save_images(imgs, file_name, fps=4, lossless=True)
dec_imgs = webp.load_images(file_name, 'RGBA')
assert len(dec_imgs) == 4
for dec_img, img in zip(dec_imgs, imgs):
actual = np.asarray(dec_img, dtype=np.uint8)
expected = np.asarray(img, dtype=np.uint8)
assert_array_equal(actual, expected)
from PIL import Image
import re
fp_in = "./*.png"
fp_out = "out.gif"
def atoi(text):
return int(text) if text.isdigit() else text
def natural_keys(text):
return [atoi(c) for c in re.split(r'(\d+)', text)]
img, *imgs = [
Image.open(f) for f in sorted(glob.glob(fp_in), key=natural_keys)
]
# the crate i use to extract images works
# not very well, therefore I do some make up on
# all resulting images.
# unpredictably, this inverts the image. It's fine by me - but what the hell?
for value in imgs:
pixels = value.load()
for i in range(img.size[0]):
for j in range(img.size[1]):
if pixels[i, j] > (200, 200, 200):
pixels[i, j] = (0, 0, 0)
webp.save_images(imgs, "anim.webp", lossless=False, fps=30)