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fix: support animated sticker convert(RGBA)

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xz-dev 2024-07-16 18:58:10 +08:00
parent be477874e3
commit a6b8c09379
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1 changed files with 29 additions and 6 deletions
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35
sticker/lib/util.py
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@ -25,7 +25,7 @@ try:
except ImportError:
print("[Warning] Magic is not installed, using file extensions to guess mime types")
magic = None
from PIL import Image
from PIL import Image, ImageSequence
from . import matrix
@ -60,11 +60,33 @@ def video_to_gif(data: bytes, mime: str) -> bytes:
return gif.read()
def _convert_image(data: bytes) -> (bytes, int, int):
image: Image.Image = Image.open(BytesIO(data)).convert("RGBA")
def _convert_image(data: bytes, mimetype: str) -> (bytes, int, int):
image: Image.Image = Image.open(BytesIO(data))
new_file = BytesIO()
image.save(new_file, "png")
w, h = image.size
suffix = mimetypes.guess_extension(mimetype)
if suffix:
suffix = suffix[1:]
# Determine if the image is a GIF
is_animated = getattr(image, "is_animated", False)
if is_animated:
frames = [frame.convert("RGBA") for frame in ImageSequence.Iterator(image)]
# Save the new GIF
frames[0].save(
new_file,
format='GIF',
save_all=True,
append_images=frames[1:],
loop=image.info.get('loop', 0), # Default loop to 0 if not present
duration=image.info.get('duration', 100), # Set a default duration if not present
transparency=image.info.get('transparency', 255), # Default to 255 if transparency is not present
disposal=image.info.get('disposal', 2) # Default to disposal method 2 (restore to background)
)
# Get the size of the first frame to determine resizing
w, h = frames[0].size
else:
image = image.convert("RGBA")
image.save(new_file, format=suffix)
w, h = image.size
if w > 256 or h > 256:
# Set the width and height to lower values so clients wouldn't show them as huge images
if w > h:
@ -103,7 +125,8 @@ def _convert_sticker(data: bytes) -> (bytes, str, int, int):
gif.seek(0)
data = gif.read()
mimetype = "image/gif"
rlt = _convert_image(data)
rlt = _convert_image(data, mimetype)
suffix = mimetypes.guess_extension(mimetype)
return rlt[0], mimetype, rlt[1], rlt[2]