Preparation for -af support.
Signed-off-by: NMarton Balint <cus@passwd.hu>

The padding was lost during porting from avcodec
Should fix out of array accesses

Found-by: ubitux
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Fix reference after f7ab23b0.
+10l to me, this time aliens are not involved.

+10l to me, I blame the aliens.

Fixes memleak spotted by FATE.

Warning note suggested by Reimar.

The functions which actually drive the filter graph by pushing
frames through it need to ensure an aligned stack for SIMD functions.

This fixes a crash in YADIF filter when using a mingw build in a MSVC application.
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Regression since de3e0ab3.

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

The filter already checks that width (and height) are greater than 3.
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

These smaller samples do not need to be unpacked to double words
allowing the code to process more pixels every iteration (still 2 in MMX
but 6 in SSE2).  It also avoids emulating the missing double word
instructions on older instruction sets.

Like with the previous code for 16-bit samples this has been tested on
an Athlon64 and a Core2Quad.

Athlon64:
1809275 decicycles in C,    32718 runs, 50 skips
 911675 decicycles in mmx,  32727 runs, 41 skips, 2.0x faster
 495284 decicycles in sse2, 32747 runs, 21 skips, 3.7x faster

Core2Quad:
 921363 decicycles in C,     32756 runs, 12 skips
 486537 decicycles in mmx,   32764 runs,  4 skips, 1.9x faster
 293296 decicycles in sse2,  32759 runs,  9 skips, 3.1x faster
 284910 decicycles in ssse3, 32759 runs,  9 skips, 3.2x faster
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This is a fairly dumb copy of the assembly for 8-bit samples but it
works and produces identical output to the C version.  The options have
been tested on an Athlon64 and a Core2Quad.

Athlon64:
1810385 decicycles in C,    32726 runs, 42 skips
1080744 decicycles in mmx,  32744 runs, 24 skips, 1.7x faster
 818315 decicycles in sse2, 32735 runs, 33 skips, 2.2x faster

Core2Quad:
 924025 decicycles in C,     32750 runs, 18 skips
 623995 decicycles in mmx,   32767 runs,  1 skips, 1.5x faster
 406223 decicycles in sse2,  32764 runs,  4 skips, 2.3x faster
 387842 decicycles in ssse3, 32767 runs,  1 skips, 2.4x faster
 307726 decicycles in sse4,  32763 runs,  5 skips, 3.0x faster
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Reconfiguring can break x264 lossless encoding.

Fixes ticket #2165.

Since lavfi works natively with AVFrame now, these functions are no longer
necessary and can be removed in a future bump.
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

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

* qatar/master:
  af_join: do not leak input frames.
  asrc_anullsrc: return EOF, not -1

Conflicts:
	libavfilter/asrc_anullsrc.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'f4281f45':
  asrc_anullsrc: do not set samplerate and channel layout explicitly

Conflicts:
	libavfilter/asrc_anullsrc.c

No change to FFmpeg due to semantic difference between the filter sources
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'e4a7b217':
  vf_showinfo: remove its useless init function
  AVOptions: fix using named constants with child contexts.

Conflicts:
	libavutil/opt.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '9676b9a2':
  AVOption: remove an unused function parameter.
  filters.texi: restore mistakenly removed section name for noformat
  avfiltergraph: use sizeof(var) instead of sizeof(type)
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '42c7c61a':
  avfiltergraph: replace AVFilterGraph.filter_count with nb_filters

Conflicts:
	doc/APIchanges
	libavfilter/avfiltergraph.c
	libavfilter/avfiltergraph.h
	libavfilter/graphparser.c
	libavfilter/version.h
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit '556aab8f':
  lavfi: use designated initializers in avfilter_class

Conflicts:
	libavfilter/avfilter.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'aa3c7799':
  lavf: sanity check size in av_get/append_packet().

Conflicts:
	libavformat/utils.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

* commit 'ca6c3f2c':
  lzo: fix overflow checking in copy_backptr()
  flacdec: simplify bounds checking in flac_probe()
  atrac3: avoid oversized shifting in decode_bytes()

Conflicts:
	libavformat/flacdec.c
Merged-by: NMichael Niedermayer <michaelni@gmx.at>

This is admittedly kind of pointless since usually -f image2pipe
can be used for the purpose, but this is more user-friendly.
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>

Otherwise ffmpeg -formats claims that we only support demuxing
of that format.
To keep compatibility the struct could be duplicated instead,
but this seems almost like overkill for such a rare format.
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>

- Make MultiByteToWideChar fail when it encounters invalid encoding.
  Without this, invalid characters might just be skipped
- When MultiByteToWideChar fails, assume the file name is in CP_ACP
  and open it via normal open function, even when the file will be
  written
- When malloc fails return error instead of crashing
Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>

Signed-off-by: NReimar Döffinger <Reimar.Doeffinger@gmx.de>