Add FF_INPUT_BUFFER_PADDING_SIZE.
If allocation fails, also free memory which was allocated previously in
adpcm_encode_init().

It is already set in avcodec_alloc_frame().

DSPContext.bswap_buf() requires aligned output

Provide MMX, SSE2 and SSSE3 versions, with a fast-path when the weights are
multiples of 512 (which is often the case when the values round up nicely).

*_TIMER report for the 16x16 and 8x8 cases:
C:
9015 decicycles in 16, 524257 runs, 31 skips
2656 decicycles in 8, 524271 runs, 17 skips
MMX:
4156 decicycles in 16, 262090 runs, 54 skips
1206 decicycles in 8, 262131 runs, 13 skips
MMX on fast-path:
2760 decicycles in 16, 524222 runs, 66 skips
995 decicycles in 8, 524252 runs, 36 skips
SSE2:
2163 decicycles in 16, 262131 runs, 13 skips
832 decicycles in 8, 262137 runs, 7 skips
SSE2 with fast path:
1783 decicycles in 16, 524276 runs, 12 skips
711 decicycles in 8, 524283 runs, 5 skips
SSSE3:
2117 decicycles in 16, 262136 runs, 8 skips
814 decicycles in 8, 262143 runs, 1 skips
SSSE3 with fast path:
1315 decicycles in 16, 524285 runs, 3 skips
578 decicycles in 8, 524286 runs, 2 skips

This means around a 4% speedup for some sequences.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

This fixes some unused variable warnings with YASM disabled.

Currently, any samples in the final frame are not decoded because they are
only represented by one frame instead of two. So we encode two final frames to
cover both the analysis delay and the MDCT delay.

Fixes handling of CODEC_CAP_SMALL_LAST_FRAME.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

There are many places where we read an unchecked 4-bit index into it.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

Fixes CVE-2011-3945

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 807a045a)
Signed-off-by: Alex Converse <alex.converse@gmail.com>

Fixes: CVE-2011-3952

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Based on fix by Michael Niedermayer

While pshufb allows emulating bswap on XMM registers for SSSE3, more
shuffling is needed for SSE2. Alignment is critical, so specific codepaths
are provided for this case.

For the huffyuv sequence "angels_480-huffyuvcompress.avi":
C (using bswap instruction): ~ 55k cycles
SSE2:                        ~ 40k cycles
SSSE3 using unaligned loads: ~ 35k cycles
SSSE3 using aligned loads:   ~ 30k cycles
Signed-off-by: Diego Biurrun <diego@biurrun.de>

This fixes playback of e.g. RGB48 (bpp=6) content on x86 CPUs. Fixes
bug 214.

Some compilers still do not support this syntax.
Signed-off-by: Mans Rullgard <mans@mansr.com>

On x86-64, it indeed uses all 16 registers (and on x86-32, this gets
clipped to 8). Not marking it properly causes callers of this function
to fail randomly because of XMM register clobbering.

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

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

Note: This fixes the following GCC warning :-
libavcodec/sunrast.c:94: warning: comparison of unsigned expression < 0 is always false.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

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

Forgot to add the equivalent amount to the incoming sample pointer as the output pointer.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

10l: Forgot to adjust deinterleave for new location of incoming samples in 7946a5ac.

This produced incorrect, but surprisingly listenable results.

Thanks to Justin Ruggles for the report.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

This function is video-only, so there's no point in setting more
linesizes.

Fixes stack corruption in avplay.

Overall speedup of HE-AAC decoding 2.3x on Cortex-A8, 1.2x on A9.
Signed-off-by: Mans Rullgard <mans@mansr.com>

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

This prepares for assembly optimisations by moving the most
time-consuming loops to functions called through pointers
in a new context.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Earlier, calling avcodec_encode_audio worked fine even if time_base
wasn't set. Now it crashes due to trying to scale the output pts to
the codec context time base. This affects e.g. VLC.

If no time_base is set for audio codecs, set it to the sample
rate.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Fixes build with --enable-libspeex