instead interleave channels while decoding

Signed-off-by: Mans Rullgard <mans@mansr.com>

This is simpler and fixes some overflow checker warnings.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This multiplication can overflow the signed range but not the
unsigned.  After right-shifting it will thus fit in the signed
range again.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Multiply by unsigned 0x01010101 to replicate bytes into 32-bit
word.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This is simpler and avoids an invalid shift by 32 in the
aligned case.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This bit manipulation is equivalent but avoids undefined
shifts and overflows.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This avoids crashes due to reading out-of-bounds.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Since it contains dimensions parsing an invalid one has rather
annoying effects.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

This was removed erroneously in
046f081b. This define still is
necessary for getting MAP_ANONYMOUS defined on linux/glibc,
despite the define reshuffling done in that commit.

Without MAP_ANONYMOUS defined, the mprotect calls for setting the
generated mmx2 scaler code pages executable are left out, causing
crashes if that codepath is chosen.

This patch fixes scaling from 192x144 to 320x240 with
-sws_flags fast_bilinear, which crashes on linux at the
moment.
Signed-off-by: Martin Storsjö <martin@martin.st>

A value shifted left by >31 needs to have a 64-bit type.
As there are no defined channels in this range, the fix
is purely theoretical at this point, although it does
avoid some invalid shifts triggering the overflow
checker.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This way the needed linking flags end up in libavcodec.pc.
Signed-off-by: Martin Storsjö <martin@martin.st>

It makes more sense for a bit mask to use an unsigned type.
The change should be source and binary compatible on all
supported systems, hence micro version bump.

Fixes a few invalid shifts.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This is a hand-tuned version of the code with impossible parts of
the FASTDIV function ommitted.

2-5% faster overall on Cortex-A8.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This makes the two pass encoding with x264 working with -f null - as
first pass.

This is required to fulfill avcodec_decode_video2() promise to return
the number of consumed bytes on success.

Add all seven test bitstreams of Coding Technologies "aacPlus Decoder
Check Package". The streams cover different ways to signal SBR and PS
in different formats.

Casting the left-most byte to unsigned avoids an undefined
result of the shift by 24 if bit 7 is set.  This affects
the rm demuxer.
Signed-off-by: Mans Rullgard <mans@mansr.com>

The common non inlined code goes in snow.c, the common inlined code in
snow.h, tables move in snowdata.h (included only by snow.c)

isGray() is left as a FIXME for later.