Simplify, increment robustness.

Based on a patch by Clément Bœsch.

See thread:
From: Clément Bœsch <ubitux@gmail.com>
Subject: [FFmpeg-devel] [PATCH 1/5] lavu: add av_dynarray_alloc_elem().
Date: Sun, 14 Apr 2013 03:07:54 +0200

Allow single-place definition of constant used to fill poisoned memory.

* cehoyos/master:
  Do not read strd chunk in avi files as H264 extradata.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Fixes ticket #2561.

For some reason only for that pix format decoder picks native format.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

* qatar/master:
  configure: x86: Only enable cpunop on i686
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f54b5505':
  configure: Rename cmov processor capability to i686
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e08c946c':
  configure: Explicitly disable PIC when targeting win32/mingw
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b1803c79':
  configure: Use enable_weak when enabling pic
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Update rgb24 fate test as it no longer writes image in big endian
format.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The assembler may insert nopl instructions for cpunop, which are not
(universally) supported on i586 CPUs.

The goal is to make the capapility slightly more general and have it
cover the availability of the nopl instruction in addition to cmov.

This was due to a miscomputation of s->cur_channel, which led to
psy-based encoders using the psy coefficients for the wrong channel.
Test sample attached on the bug tracker had the peculiar case of all
other channels being silent, so the error was far more noticeable.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

These platforms do not have any notion of PIC. On some compilers,
enabling pic produces a number of warnings.

This avoids trying to produce PIC loads in the ARM assembly - there
are no relocation types in PE/COFF that correspond to
BFD_RELOC_32_PCREL (R_ARM_REL32 in ELF).

As a side-effect, this avoids enabling PIC on mingw64, getting rid
of the warnings about PIC not having any effect on that platform.
Signed-off-by: Martin Storsjö <martin@martin.st>

This allows it to be overridden, either by the user on the command
line, or by other sections of the configure script.
Signed-off-by: Martin Storsjö <martin@martin.st>

This reverts commit 23f7b14f.

This commit broke fate

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

With the introduction of AVFilterContext->is_disabled, we can simplify
the custom passthrough mode in filters.

This commit is technically a small compat break, but the timeline was
introduced very recently.

Doxy by Stefano Sabatini.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* jamrial/adpcm:
  ADPCM IMA Radical decoder
  RedSpark demuxer
  RSD demuxer
  adpcm_thp: Allow the use of extradata for the adpcm table
  ADP demuxer
  ADPCM DTK decoder
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Thanks to ubitux for spotting that
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Somehow i managed to loose this fix before pushing
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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