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Commit 5df56db introduced four completely rewritten functions with
intrinsics, but it turns out two of them have integers that can
overflow. Because those two functions were barely faster than
what they replaced, fixing these overflows will probably make the
functions slower than what they replaced, so this is reverted.
Credit: Oss-Fuzz
Issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47416
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Credit: Oss-Fuzz
Issue: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47187
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Quite a lot of decoders have trouble streaming or seeking in a
file with frames that only consist of constant subframes because
of the large difference between the largest and smallest subframe.
To remedy this, this commit makes it possible to disable the use
of constant subframes for the last subframe in case all others are
constant with a new API function. This means the minimum bitrate
for a FLAC file encoded with this function used is raised to
1bit/sample (i.e. 48kbit/s for 48kHz material). This commit also
adds tests to the test suite
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New intrinsic routines are added to compute the best fixed
predictor. According to my testing, the new routine is about
3 times as fast as the existing routine. This means an
overall speedup for preset -2 of about 30% and for preset
-0 of about 15% for CDDA
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As pointed out by Ozkan Sezer, on some platforms `int32_t` is actually
a typedef for `long` so `unsigned` cannot be used interchangably with
`FLAC__uint32`. Fix is to switch from `unsigned` to explicit sized ISO
C types defined in <stdint.h>.
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Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
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Usage of internal aliases for float and double do not provide
substantial value. For integer-only libs, the macro
FLAC__INTEGER_ONLY_LIBRARY is used in the appropriate places
already.
Also, adapt copyright messages to include 2016.
Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
Closes: https://github.com/xiph/flac/pull/10
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Patch-from: lvqcl <lvqcl.mail@gmail.com>
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Patch-from: lvqcl <lvqcl.mail@gmail.com>
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It's simpler but not faster so it is disabled by default. Maybe it
will be faster on newer CPUs though..
Patch-from: lvqcl <lvqcl.mail@gmail.com>
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Patch-from: lvqcl <lvqcl.mail@gmail.com>
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This reverts commit 151739921b74fbf31420358a5fbeb094efa017ed.
This patch only when part way to replace all FLAC_* with FLaC_*
and its really not worth going all the way.
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Previous autorconf versions had problems with variable begining witj
'FLAC_' (autoconf uses 'AC_').
Reported-by: lvqcl <lvqcl.mail@gmail.com>
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