With threads the decoder has a delay and will thus have multiple
frames at EOF left in its buffers which will be returned when flushing
the decoder. The code that extracts such frames from the decoder at the
end does not pull frames from the filtergraph, thus when one of these
frames causes the filtergraph to be reinited, the frames still inside
the graph at that point re lost

This commit changes the flushing to be more similar to normal decoding
and 1 frame at a time

Fixes hqx fate with threads
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fix ticket #2024
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fixess part of ticket #2024
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: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '9a9e2f1c':
  dsputil: Split audio operations off into a separate context

Conflicts:
	configure
	libavcodec/takdec.c
	libavcodec/x86/Makefile
	libavcodec/x86/dsputil.asm
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/dsputil_mmx.c
	libavcodec/x86/dsputil_x86.h
Merged-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>

This avoids reading uninitialized bytes and confusing valgrind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This avoids reading uninitialized bytes and confusing valgrind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

This is useful to understand how it's different from the original code.

Code si smaller, no speed difference.

This should fix a infinite loop on freebsd
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #3428.

It is already shown in the list of external libraries if it was enabled.

Partially fixes Ticket #3404 (xbr filter remaining)

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

Suggested-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Fixes compilation with --disable-everything --disable-network --enable-demuxer=matroska
Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>

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

* commit 'ca1e36a8':
  h264: fix build when error resilience is disabled

Conflicts:
	libavcodec/h264_picture.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This fixes loosing the perfectly valid SAR when width=height=0
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9e500efd':
  Add av_image_check_sar() and use it to validate SAR

Conflicts:
	libavcodec/dpx.c
	libavcodec/dvdec.c
	libavcodec/ffv1dec.c
	libavcodec/utils.c
	libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

gcc 4.2 seems not maintained anymore so theres no option besides
just working around it.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit 'd349afb0':
  dv: cosmetics, reindent
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '650dee63':
  dv: get rid of global non-const tables

Conflicts:
	libavcodec/dv_profile.h
	libavcodec/dvdec.c
	libavcodec/dvenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '77811159':
  dvenc: initialize the profile only once, at init

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

* commit '452860d7':
  Use av_packet_rescale_ts() to simplify code.

Conflicts:
	doc/examples/muxing.c
	ffmpeg.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>