60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
import io
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import struct
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import sys
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from ._common import *
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from ._exceptions import InvalidImageDataError
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from piexif import _webp
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def insert(exif, image, new_file=None):
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"""
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py:function:: piexif.insert(exif_bytes, filename)
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Insert exif into JPEG.
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:param bytes exif_bytes: Exif as bytes
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:param str filename: JPEG
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"""
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if exif[0:6] != b"\x45\x78\x69\x66\x00\x00":
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raise ValueError("Given data is not exif data")
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output_file = False
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# Prevents "UnicodeWarning: Unicode equal comparison failed" warnings on Python 2
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maybe_image = sys.version_info >= (3,0,0) or isinstance(image, str)
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if maybe_image and image[0:2] == b"\xff\xd8":
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image_data = image
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file_type = "jpeg"
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elif maybe_image and image[0:4] == b"RIFF" and image[8:12] == b"WEBP":
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image_data = image
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file_type = "webp"
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else:
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with open(image, 'rb') as f:
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image_data = f.read()
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if image_data[0:2] == b"\xff\xd8":
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file_type = "jpeg"
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elif image_data[0:4] == b"RIFF" and image_data[8:12] == b"WEBP":
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file_type = "webp"
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else:
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raise InvalidImageDataError
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output_file = True
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if file_type == "jpeg":
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exif = b"\xff\xe1" + struct.pack(">H", len(exif) + 2) + exif
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segments = split_into_segments(image_data)
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new_data = merge_segments(segments, exif)
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elif file_type == "webp":
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exif = exif[6:]
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new_data = _webp.insert(image_data, exif)
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if isinstance(new_file, io.BytesIO):
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new_file.write(new_data)
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new_file.seek(0)
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elif new_file:
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with open(new_file, "wb+") as f:
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f.write(new_data)
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elif output_file:
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with open(image, "wb+") as f:
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f.write(new_data)
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else:
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raise ValueError("Give a 3rd argument to 'insert' to output file") |