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TurboJPEG: Add lossless JPEG detection capability

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Add a new TurboJPEG C API function (tjDecompressHeader4()) and Java API
method (TJDecompressor.getFlags()) that return the bitwise OR of any
flags that are relevant to the JPEG image being decompressed (currently
TJFLAG_PROGRESSIVE, TJFLAG_ARITHMETIC, TJFLAG_LOSSLESS, and their Java
equivalents.)  This allows a calling program to determine whether the
image being decompressed is a lossless JPEG image, which means that the
decompression scaling feature will not be available and that a
full-sized destination buffer should be allocated.

More specifically, this fixes a buffer overrun in TJBench, TJExample,
and the decompress* fuzz targets that occurred when attempting (in vain)
to decompress a lossless JPEG image with decompression scaling enabled.
This commit is contained in:
DRC
2022-11-21 20:57:39 -06:00
parent b85b028d2b
commit 98ff1fd103
32 changed files with 481 additions and 283 deletions
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doxygen.config
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@@ -1,5 +1,5 @@
PROJECT_NAME = TurboJPEG
PROJECT_NUMBER = 2.1.4
PROJECT_NUMBER = 2.2
OUTPUT_DIRECTORY = doc/
USE_WINDOWS_ENCODING = NO
OPTIMIZE_OUTPUT_FOR_C = YES