This allows us to get rid of demuxer-specific hacks in the decoder and
will allow streamcopy from matroska once we have a wavpack muxer.

Currently the demuxer shaves the blocks and exports only the
information that is useful to the decoder.

Exporting the blocks just as they are stored is simpler to understand
and will make remuxing wavpack easier.

We don't know whether it will be float until we look at the data.

The decoder always returns output if an error does not occur.

Such blocks are not valid.

Number of samples in the first block is checked to be strictly positive
earlier in wavpack_decode_frame() and number of samples in all the other
blocks is checked to be equal to the first one.

The caller never cares about the number of decoded samples, so this only
confuses the reader.

This simplifies the code and makes it faster.

The decoder always consumes full packets.

mkvmerge apparrently uses it for mpeg1/2 video, but it contains the same
information as CodecPrivate, so it can be ignored.

Smacker audio uses overflows instead of clipping.

This reverts commit 375ca0ac.

This matches the other eabi attribute in the same file. This is
required in order to build for arm/hardfloat with other object
file formats than ELF.
Signed-off-by: Martin Storsjö <martin@martin.st>

the second and third sources were incremented only by half of the needed size

Initial support for the ICL compiler on windows. Requires a new
c99wrap with ICL support (1.0.2+).

Currently not much different speed wise compared to msvc. In the
future with a few changes it can be made to support the inline asm.
This would be the primary reason for using it.

Passed all fate tests, versions tested:
    13.1.1.171 (2013 Update 3) x86 and x64
    12.1.5.344 (2011 Update 11) x86 and x64
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Change the check_exec_crash test to use a function pointer instead of
simply calling the function. The EBP availability test will crash when
compiled with ICL likely due to compiler optimization shenanigans.

Originally the check_exec_crash code was moved out of main to fix a
problem with gcc's treatment of non-leaf main on x86_32. Libav already
moved the code out of main but the addition of the function pointer will
prevent any inlining which fixes the remaining problem.

A function pointer is used since it is compiler agnostic (as opposed to
say __attribute__ ((noinline)) which would only work with gcc compatible
compilers).
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This fixes build failures on windows since 2a6eaeaa.
Signed-off-by: Martin Storsjö <martin@martin.st>

Mostly based on libavcodec's

It will be useful in lavfi, and could conceivably be useful to the user
applications as well.

It will be used in other places than lavc.

This means that typedef struct SomeStruct {...} SomeStruct will only be
documented as SomeStruct in the doxy, without a pointless entry in the
typedefs list.

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

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

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Prevent most out of buffer reads.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Many functions treat it as such already.
Fixes Bug 499.

CC:libav-stable@libav.org

ff_mpeg_unref_picture clears the flag indicating that the frame needs to
be reallocated after a frame size change. Since we have now reference
counted buffers we can unref the buffers immediately.

Signed-off-by: Martin Storsjö <martin@martin.st>

Prevent out of buffer write when decoding broken samples.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

If the "build_only" variable is set in the configuration file, the
FATE client will skip running tests and just compile all targets.
Signed-off-by: Martin Storsjö <martin@martin.st>