* commit '096abfa1':
  parser: fix large overreads
  bitstream: add get_bits64() to support reading more than 32 bits at once
  arm: detect cpu features at runtime on Linux

Conflicts:
	libavcodec/parser.c
	libavformat/mpegts.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Renaming because of name conflict
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b3267559':
  arm: rename ARMVFP config symbol to VFP
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '637606de':
  configure: arm: make _inline arch ext symbols depend on inline_asm
  arm: use HAVE*_INLINE/EXTERNAL macros for conditional compilation

Conflicts:
	configure
	libavcodec/arm/dca.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7f2b3dca':
  configure: arm: check inline and external asm support for extensions
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c6ebc9fa':
  configure: add check_insn function
  configure: clean up check_inline_asm and check_as functions
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f0fe245b':
  configure: arm: set fast_clz and fast_unaligned in cpuflags section
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1234c66a':
  configure: arm: detect toolchain default arch version
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9ebd45c2':
  configure: do not bypass cpuflags section if --cpu not given
  dct-test: arm: indicate required cpu features for optimised funcs
  snow: fix build after 594d4d5d
  arm: fix use of uninitialised value in ff_fft_fixed_init_arm()
  avpicture: Don't assume a valid pix fmt in avpicture_get_size

Conflicts:
	libavcodec/avpicture.c
	libavcodec/snow.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Triggered by the sample for trac ticket #1726.

While here remove ff_lzw_cur_ptr() as it become obsolete.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The formating can and should be improved.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Also remove a duplicate function in the MPEG-TS demuxer.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Improve consistency/readability.

Avoid one dereference, simplify.

Fix crash, for example in the command:
ffmpeg -f image2 -vcodec pgmyuv -i tests/vsynth1/%02d.pgm \
  -vf "[in]format=yuv420p,split,alphamerge,split[o3][o4];
       [o4]vflip,alphaextract[alpha];[o3][alpha]alphamerge[out]" \
  -vcodec rawvideo -f nut md5:

The code causes uninitialized data copy, and may be actually slower than
a loop over each line in case the padding is big.

Such packets are useless.
Signed-off-by: Paul B Mahol <onemda@gmail.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 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 makes --disable-inline-asm work as expected.
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>

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>

These macros reflect the actual capabilities required here.
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>