The return value is not needed.  This fixes the warning:
libavutil/eval.c:353:15: warning: ignoring return value of ‘strtod’

Also fix a comment and an #endif comment.

Use this for enabling the ppc timer.h implementation only on
assemblers that support labels in the inline assembly.

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

CC:libav-stable@libav.org

Fixes build with yasm-1.1

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

1.5x-1.8x faster on sandybridge

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

4x-6x faster on sandybridge

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

We never used the rolling-average mode, and this makes av_update_lls 15% faster.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

These help avoiding overflows and simplify error handling.

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

libavutil/cpu.c:133:9: warning: unused variable ‘ret’ [-Wunused-variable]

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>

This fixes build failures on windows since 2a6eaeaa8.

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

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

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

CC:libav-stable@libav.org

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

This makes linking succeed for tools that include config.h but
don't link to libavutil.

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

97c -> 49c
Some codecs could benefit from more unrolling, but AAC doesn't.

Explicitly saying it can't hurt.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

This prevents non-AltiVec-enabled compilers from choking.

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

cmp{p,s}{s,d} instructions do take an imm8 operand.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Add simpler names and a shorthand for native atomics (as opposed to
pthreads fallback).

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

The named constant needs to be searched for in the same object on which
the option is set, i.e. target_obj.

The check `src > dst' in the form `&c->out[-back] > c->out' invokes
pointer overflow, which is undefined behavior in C.

Remove the check.  Also replace `&c->out[-back] < c->out_start' with
a safe form `c->out - c->out_start < back' to avoid overflow.

CC: libav-stable@libav.org

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This allows reporting missing features and requesting samples from
all libraries in a standard way; with a simplified API.

The mingw win32 atomics appear to be faulty, so they should not be used
if the gcc ones are available.

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

Fixes video playback in applications still using reordered_opaque.

On the current code, armcc will fail with:
"libavutil/atomic_gcc.h", line 52: Error:  #2771: first argument must be
a pointer to integer or enumeration type

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

Not all gcc configurations have an implementation of all the atomic
operations, and some gcc configurations have some atomic builtins
implemented but not all.

Thus check for the most essential function, whose presence should
indicate that all others are present as well, since it can be used
to implement all the other ones.

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

This makes them pass standalone compilation tests. Previously,
they included atomic.h which included themselves again, leading to
double definitions.

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