def test_insert_exif(self):
"""Can PIL open WebP that is inserted exif?"""
IMAGE_DIR = "tests/images/"
OUT_DIR = "tests/images/out/"
files = [
"tool1.webp",
"pil1.webp",
"pil2.webp",
"pil3.webp",
"pil_rgb.webp",
"pil_rgba.webp",
]
exif_dict = {
"0th": {
piexif.ImageIFD.Software: b"PIL",
piexif.ImageIFD.Make: b"Make",
}
}
for filename in files:
try:
Image.open(IMAGE_DIR + filename)
except:
print("Pillow can't read {0}".format(filename))
continue
with open(IMAGE_DIR + filename, "rb") as f:
data = f.read()
exif_bytes = piexif.dump(exif_dict)
exif_inserted = _webp.insert(data, exif_bytes)
with open(OUT_DIR + "i_" + filename, "wb") as f:
f.write(exif_inserted)
Image.open(OUT_DIR + "i_" + filename)
def insert(exif, image, new_file=None):
"""
py:function:: piexif.insert(exif_bytes, filename)
Insert exif into JPEG.
:param bytes exif_bytes: Exif as bytes
:param str filename: JPEG
"""
if exif[0:6] != b"\x45\x78\x69\x66\x00\x00":
raise ValueError("Given data is not exif data")
output_file = False
# Prevents "UnicodeWarning: Unicode equal comparison failed" warnings on Python 2
maybe_image = sys.version_info >= (3, 0, 0) or isinstance(image, str)
if maybe_image and image[0:2] == b"\xff\xd8":
image_data = image
file_type = "jpeg"
elif maybe_image and image[0:4] == b"RIFF" and image[8:12] == b"WEBP":
image_data = image
file_type = "webp"
else:
with open(image, 'rb') as f:
image_data = f.read()
if image_data[0:2] == b"\xff\xd8":
file_type = "jpeg"
elif image_data[0:4] == b"RIFF" and image_data[8:12] == b"WEBP":
file_type = "webp"
else:
raise InvalidImageDataError
output_file = True
if file_type == "jpeg":
exif = b"\xff\xe1" + struct.pack(">H", len(exif) + 2) + exif
segments = split_into_segments(image_data)
new_data = merge_segments(segments, exif)
elif file_type == "webp":
exif = exif[6:]
new_data = _webp.insert(image_data, exif)
if isinstance(new_file, io.BytesIO):
new_file.write(new_data)
new_file.seek(0)
elif new_file:
with open(new_file, "wb+") as f:
f.write(new_data)
elif output_file:
with open(image, "wb+") as f:
f.write(new_data)
else:
raise ValueError("Give a 3rd argument to 'insert' to output file")