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STY: Add two abbreviations for an inline image object #3048

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STY: Add two abbreviations for an inline image object #3048

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4f0c026
STY: Add two abbreviations for an inline image object
j-t-1 Jan 13, 2025
414a960
STY: Add two abbreviations for an inline image object
j-t-1 Apr 18, 2025
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4 changes: 2 additions & 2 deletions pypdf/filters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -656,10 +656,10 @@ def decode_stream_data(stream: Any) -> bytes:
data = FlateDecode.decode(data, params)
elif filter_name in (FT.RUN_LENGTH_DECODE, FTA.RL):
data = RunLengthDecode.decode(data)
elif filter_name == FT.CCITT_FAX_DECODE:
elif filter_name in (FT.CCITT_FAX_DECODE, FTA.CCF):
height = stream.get(IA.HEIGHT, ())
data = CCITTFaxDecode.decode(data, params, height)
elif filter_name == FT.DCT_DECODE:
elif filter_name in (FT.DCT_DECODE, FTA.DCT):
data = DCTDecode.decode(data)
elif filter_name == FT.JPX_DECODE:
data = JPXDecode.decode(data)
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24 changes: 24 additions & 0 deletions tests/test_filters.py
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Expand Up @@ -246,6 +246,30 @@ def test_ccitt_fax_decode():
)


def test_ccitt_fax_decode_and_ccf():
data = RESOURCE_ROOT.joinpath("imagemagick-CCITTFaxDecode.pdf").read_bytes()
reader = PdfReader(BytesIO(data))
image1 = reader.pages[0].images[0].data

data = data.replace(b"/CCITTFaxDecode", b"/CCF")
reader = PdfReader(BytesIO(data))
image2 = reader.pages[0].images[0].data

assert image1 == image2


def test_dct_decode_and_dct():
data = RESOURCE_ROOT.joinpath("jpeg.pdf").read_bytes()
reader = PdfReader(BytesIO(data))
image1 = reader.pages[0].images[0].data

data = data.replace(b"/DCTDecode", b"/DCT")
reader = PdfReader(BytesIO(data))
image2 = reader.pages[0].images[0].data

assert image1 == image2


@pytest.mark.enable_socket
def test_decompress_zlib_error(caplog):
reader = PdfReader(BytesIO(get_data_from_url(name="tika-952445.pdf")))
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