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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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doc/html/search/functions_0.js
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@@ -9,7 +9,7 @@ var searchData=
['tjdecodeyuv_123',['tjDecodeYUV',['../group___turbo_j_p_e_g.html#ga70abbf38f77a26fd6da8813bef96f695',1,'turbojpeg.h']]],
['tjdecodeyuvplanes_124',['tjDecodeYUVPlanes',['../group___turbo_j_p_e_g.html#ga10e837c07fa9d25770565b237d3898d9',1,'turbojpeg.h']]],
['tjdecompress2_125',['tjDecompress2',['../group___turbo_j_p_e_g.html#gae9eccef8b682a48f43a9117c231ed013',1,'turbojpeg.h']]],
['tjdecompressheader3_126',['tjDecompressHeader3',['../group___turbo_j_p_e_g.html#ga0595681096bba7199cc6f3533cb25f77',1,'turbojpeg.h']]],
['tjdecompressheader4_126',['tjDecompressHeader4',['../group___turbo_j_p_e_g.html#gac104e6e729f57f195009405949d198dc',1,'turbojpeg.h']]],
['tjdecompresstoyuv2_127',['tjDecompressToYUV2',['../group___turbo_j_p_e_g.html#ga04d1e839ff9a0860dd1475cff78d3364',1,'turbojpeg.h']]],
['tjdecompresstoyuvplanes_128',['tjDecompressToYUVPlanes',['../group___turbo_j_p_e_g.html#gaa59f901a5258ada5bd0185ad59368540',1,'turbojpeg.h']]],
['tjdestroy_129',['tjDestroy',['../group___turbo_j_p_e_g.html#ga75f355fa27225ba1a4ee392c852394d2',1,'turbojpeg.h']]],