The sh4 optimizations are removed, because the code is
100% identical to the C code, so it is unlikely to
provide any real practical benefit.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This changes the LOCAL_ALIGNED definition on systems where
DECLARE_ALIGNED is used so it matches the manual alignment
case, ensuring invalid use will not compile on x86 only to
fail on everything else.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This fixes removal of TOOLS as well as HOSTPROGS declared in the
top-level Makefile. The clean target in common.mak needs to be
eval'd since the variables used within are reset for each library.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This fixes the automatic use of $foo_extralibs when feature foo
is enabled indirectly through a _select or _suggest.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The values compared here can be more than INT64_MAX apart. Since the
difference is always positive, converting to uint64_t before subtracting
gives the correct result without overflows.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This allows compiling optimised functions for features not enabled
in the core build and selecting these at runtime if the system has
the necessary support.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This is consistent with usual ARM nomenclature as well as with the
VFPV3 and NEON symbols which both lack the ARM prefix.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This tests instruction set support in both inline and external asm.
If both fail, the base config option is disabled.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The check_insn function tests an instruction in both inline asm and
standalone assembly, and sets _external/_inline config properties
accordingly.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The check_inline_asm function should check the actual C compiler,
not the one used for assembly files. Usually these are the same,
but they might be different, typically when using a compiler other
than gcc.
The check_as should, as its name suggests, test the type of input
the AS command is used with, i.e. a standalond assembly (.S) file.
Finally, check for gnu assembler using the modified check_as as
this reflects actual usage.
Signed-off-by: Mans Rullgard <mans@mansr.com>
These are properties of the targeted core and do not depend on
specific assembly support in the toolchain which if missing will
render the controlling options here disabled.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Probe for the toolchain default architecture version if no --cpu flag
is present or an unknown cpu is specified. Works with gcc, clang and
armcc.
This allows configuring based on the arch version even if it is not
explicitly specified to configure. It also causes an explicit -march
flag to be added to CFLAGS and ASFLAGS, which in turn lets us do
proper instruction set tests with the assembler.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This will allow arch-specific ways of determining the target
variant when none is specified on the command line.
Signed-off-by: Mans Rullgard <mans@mansr.com>
When initialising an FFTContext for a plain FFT, mdct_bits is not set
and can contain a garbage value. Since nbits is always valid and for
MDCT operation is mdct_bits - 2 checking this instead avoids using an
uninitialised value while having the same effect.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Some shells, e.g. minix3, have a broken 'test' builtin which fails
if the first operand of a binary operator looks like a unary operator.
Prefixing the values with 'x' prevents this from happening.
Signed-off-by: Mans Rullgard <mans@mansr.com>
- Add special cases for offsets of 2, 3, or 4 bytes. This means the
offset is always >4 in the generic case, allowing 32-bit copies to
be used there.
- Don't use memcpy() for sizes less than 16 bytes.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This is useful for debugging. Dependencies for these files are not
generated due to limitations in many compilers.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This is (erroneously) required to enable various things in the
newlib headers. As cygwin uses newlib, it is covered by this.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This code spews a multitude of warnings with glibc (unchecked
return values), some of them possibly warranted. Furthermore,
the deamonisation is not suitable for use with typical startup
scripts as it does not provide the PID of the daemon in any way.
Users wishing to run avserver as a daemon can still do so using
start-stop-daemon or equivalent tools.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
The -mpowerpc64 and -mpowerpc-gfxopt flags are implicitly set by
-mcpu as needed. Passing them explicitly is redundant and can
conflict with user-supplied flags.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The third argument of OP_U8_ALTIVEC is evaluated at most once so
there is no need for a potentially unused temporary variable.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Some awk versions do not treat the result of unary + on a (numeric)
string as numeric, giving wrong results when used in a boolean context
Using unary - instead is logically equivalent works as expected.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Subtracting a (positive) value from the address of an array violates
C99 section 6.5.6:
If both the pointer operand and the result point to elements of the
same array object, or one past the last element of the array object,
the evaluation shall not produce an overflow; otherwise, the
behavior is undefined.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Subtracting a (positive) value from the address of an array violates
C99 section 6.5.6:
If both the pointer operand and the result point to elements of the
same array object, or one past the last element of the array object,
the evaluation shall not produce an overflow; otherwise, the
behavior is undefined.
Signed-off-by: Mans Rullgard <mans@mansr.com>
HAVE_THREADS is set in config.h if pthreads or w32threads is
available, which presumably the proper condition here.
Also fixes undefined behaviour in preprocessor directives.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This adds support for building on Plan 9 x86-32. The compat/plan9
directory contains these items:
- replacements for the 'head' and 'printf' shell commands
- wrapper for main() to disable FPU exceptions
Larger required changes to the system are described in the
documentation.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This allows targets to include special objects when linking
executables without including them in (shared) libraries.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The absence of this function will only give a less informative
string back from our fallback implementation of getnameinfo().
Signed-off-by: Mans Rullgard <mans@mansr.com>
Some systems require sys/time.h being explicitly included before
sys/resource.h. The configure check already does this.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This causes make to exit with an error message if a nonexistent
dependency is specified rather than silently dropping the test.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This defines an AVCodec only if the corresponding CONFIG option is
enabled instead of using the broad CONFIG_ENCODERS/DECODERS.
Signed-off-by: Mans Rullgard <mans@mansr.com>
This removes inline av_log2 and av_log2_16bit from the public API,
instead exporting them as regular functions. In-tree code still
gets the inline and otherwise optimised variants.
Signed-off-by: Mans Rullgard <mans@mansr.com>
The loops were reading ahead one line, which could end up outside the
buffer for reference blocks at the edge of the picture. Removing
this readahead has no measurable performance impact.
Signed-off-by: Mans Rullgard <mans@mansr.com>
aac_tablegen.h includes aac.h for the POW_SF2_ZERO definition, but
this also pulls in a raft of other headers, some of which are not
safe to use in code built with the host compiler.
Moving POW_SF2_ZERO to aac_tablegen_decl.h, where the declaration
of the array it relates to already resides, fixes the problems.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Mans RullgardandDiego Biurrun
