Make do_lavfi_pixfmts() support an user-specified name for the test.

This allows to specify two pixfmts tests for the same filter, e.g. to
test a filter with different parameters. Useful for the pending
tinterlace tests.

Increase performance (slightly).

If not set to NULL, the reference is freed by ff_end_frame(), and later
accessed in end_frame() by the filter code, causing a crash.

Make internal small_strptime() function public, and use it in place of
strptime().
This allows to avoid a dependency on strptime() on systems which do not
support it.

In particular, fix trac ticket #992.

This is consistent with the standard definition of strptime().

read_seek was undeprecated in e5c70815.

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: Michael Niedermayer <michaelni@gmx.at>

FFT in MIPS implementation is working iteratively instead
 of "recursively" calling functions for smaller FFT sizes.
Some of DSP and format convert utils functions are also optimized.
Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Reviewed-by: Vitor Sessak <vitor1001@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: Michael Niedermayer <michaelni@gmx.at>

Allow to specify NULL values explicitly, thus overriding the default
values set in the context.

* qatar/master:
  build: eamad: Add missing dependency on mpegvideo code
  build: utvideoenc: Add missing dependency on Huffman code
  avopt: Reorder the default_val struct, making i64 the first field

Conflicts:
	configure
	doc/APIchanges
	libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '21bc4403':
  avopt: Explicitly store rational option defaults in .dbl

Conflicts:
	libavfilter/buffersrc.c
	libavfilter/vsrc_testsrc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'c7b610aa':
  avopt: Explicitly store float/double option defaults in .dbl

Conflicts:
	libavcodec/ac3dec.c
	libavcodec/libx264.c
	libavfilter/af_amix.c
	libavfilter/af_asyncts.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e6153f17':
  avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union member

Conflicts:
	libavcodec/libopenjpegdec.c
	libavcodec/libopenjpegenc.c
	libavcodec/libx264.c
	libavcodec/mpeg12enc.c
	libavcodec/options_table.h
	libavcodec/snowenc.c
	libavcodec/tiffenc.c
	libavdevice/v4l2.c
	libavdevice/x11grab.c
	libavfilter/af_amix.c
	libavfilter/af_asyncts.c
	libavfilter/af_join.c
	libavfilter/buffersrc.c
	libavfilter/src_movie.c
	libavfilter/vf_delogo.c
	libavfilter/vf_drawtext.c
	libavformat/http.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/movenc.c
	libavformat/mpegenc.c
	libavformat/mpegtsenc.c
	libavformat/options_table.h
	libavformat/segment.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd58dd4b5':
  avopt: Store defaults for AV_OPT_TYPE_FLAGS in the i64 union member

Conflicts:
	libavcodec/libvpxenc.c
	libavcodec/options_table.h
	libavfilter/vf_drawtext.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '124134e4':
  avopt: Store defaults for AV_OPT_TYPE_CONST in the i64 union member

Conflicts:
	libavcodec/aacenc.c
	libavcodec/libopenjpegenc.c
	libavcodec/options_table.h
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavdevice/x11grab.c
	libavfilter/af_amix.c
	libavfilter/vf_drawtext.c
	libavformat/movenc.c
	libavformat/options_table.h
	libavutil/opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2d7d91f0':
  svq1enc: Set picture_structure correctly
  mpegvideo: remove last_picture_ptr / h264 assert.
  mpegvideo_enc: remove assert that has become obsolete with the new API
  elbg: Fix an assert

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

Also mention this change in APIchanges.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

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

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

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

Evaluating it multiple times, can have side effects and is possibly slow.
So its definitly a bad idea.
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: Michael Niedermayer <michaelni@gmx.at>

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