These utilities are meant to be defined in avfilter.c, since they are
generic and thus contain both audio and video code.

Found, analysed and tested by trac user Jamal.

Fixes ticket #1411

This is the deprecated version of the function but it is exported, so it
should fix the shared FATE box.

register starvation caused gcc4.2 to fail building 32 bit shared libs
on 64 bit OS X
Signed-off-by: Michael Bradshaw <mbradshaw@sorensonmedia.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The filtering_audio.c example needs to be updated for the new
"abuffer" filter args.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cus/stable:
  ffplay: calculate audio diff threshold based on the actual settings
  ffplay: try more channel count combinations for SDL_OpenAudio
  ffplay: simplify audio_open, rename parameters to more explanatory names
  ffplay: remove VideoState from audio_open
  ffplay: put audio parameters to their own struct
  ffplay: put audio_open into a seperate function
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  movenc: Write chan atom for all audio tracks in mov mode movies.
  mpegtsenc: use avio_open_dyn_buf(), zero pointers after freeing
  doc/avconv: add some details about the transcoding process.
  avidec: make scale and rate unsigned.
  avconv: check output stream recording time before each frame returned from filters
  avconv: split selecting input file out of transcode().
  avconv: split checking for active outputs out of transcode().
  avfiltergraph: make some functions static.

Conflicts:
	ffmpeg.c
	libavfilter/avfiltergraph.c
	libavfilter/internal.h
	libavformat/mpegtsenc.c
	tests/ref/fate/acodec-alac
	tests/ref/fate/acodec-pcm-s16be
	tests/ref/fate/acodec-pcm-s24be
	tests/ref/fate/acodec-pcm-s32be
	tests/ref/fate/acodec-pcm-s8
	tests/ref/lavf/mov
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Based on the shotdetect algorithm (http://shotdetect.nonutc.fr/ by Johan
MATHE johan.mathe tremplin-utc.net).

This works as expected if the input stream is not yuv4xxp.

Reviewed-by: Paul B Mahol

This fixes -vol leading to 2 inserted volume filters
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Per suggestion by Michael Niedermayer.
Signed-off-by: Jindřich Makovička <makovick@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>

The specs say they are unsigned 32bit integers.

There may be multiple frames returned, so with just one check we can
write more than requested to the output.

They are not used outside of avfiltergraph.c

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

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

Found, analysed and tested by trac user Jamal.

Fixes part of Ticket #1404.

This reverts 78da0438; it is not
required anymore since the previous commit (these extended checks were
for the -timecode option in both muxers and encoders), and reduces the
diff with the fork.

Some demuxers set a timecode in the format or streams metadata. The
muxers now make use of this metadata instead of a duplicated private
option.

This makes possible transparent copy of the timecode when transmuxing
and transcoding.

-timecode option for MPEG1/2 codec is also renamed to -gop_timecode. The
global ffmpeg -timecode option will set it anyway so no option change
visible for the user.

avfilter_default_filter_name() is supposed to access an AVFilterContext
struct, if used with a private struct it will cause a crash since it will
access fields which are non defined in the private struct.

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

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

Helps debuggability.

The function is modelled after av_default_item_name(), and will print the
name of the instance filter if defined, otherwise the name of the filter.

This allows to show the instance name in the log, which is useful when
debugging complex filter graphs.