With various edits suggested by Stefano Sabatini and Clément Bœsch.

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f0dba198b34_2970_Snd0a3a2ad4.dee
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

lumscale/lumshift don't get reset back to their default values if
intensity compensation is not active, and a wrong signaling here can
cause playback issues.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 is the only valid value for VC-1/WMV3, and setting it here makes sure
no invalid value is send to a hw accelerator, for example.
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>

Fixes reading freed memory
Fixes: asan_heap-uaf_1abf8ef_3987_NUT_A_ericsson_4.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

This should avoid floods of first_dts not matching debug messages
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

These are not supported by all compilers (gcc 2.95 but also older SPARC
compilers, see gcc bug #33304 for example), and there is no real need for them.
One use of this feature remains in libavdevice/v4l2.c which can't be
replaced quite as easily.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Add ff_id3v2_read_dict() for parsing without AVFormatContext, but
instead with AVIOContext and AVDictionary.

AVFormatContext is still used for logging, if available.

Chapter parsing is the only non-logging functionality that actually
needs AVFormatContext, and AFAICS it should be modified to write the
data to ID3v2ExtraMeta first, from where it can be implanted to
AVFormatContext by a separate function (like it is done with
read_apic() and ff_id3v2_parse_apic()). That is outside the scope of
this patch, though.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>

Add AVOptions for setting the initial offset and the ending offset, so
they can be used for setting an appropriate Range header.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>

They are used in HLS.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>

Used in some HLS streams ("Timed Metadata for HTTP Live Streaming").

This is just ID3 tags at arbitrary stream positions, but I still added
"timed" to the codec name to avoid confusion with regular non-stream ID3
tags.
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>

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

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

This is to prevent regressions in case the old code was able to partly
decode frames (no way to say without a testcase)
Add a memset to prevent use of uninitialized memory until we have a
testcase and can test/fix it
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cigaes/master:
  lavc/mjpegenc: use proper error codes.
  lavc/mjpegenc: check av_frame_alloc() failure.
  lavc/libopenjpegenc: check av_frame_alloc() failure.
  lavc/diracdec: check av_frame_alloc() failure.
  lavc/utils: check av_frame_alloc() failure.
  ffprobe: check av_frame_alloc() failure.
  lavc/ffwavesynth: fix dependency sizeof(AVFrame).
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Some older compilers might have particular trouble with them,
and they do not really seem worth it to me.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

In particular the mutex initialization for example won't actually
compile with e.g. gcc 2.95.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Since we have this compat/va_copy.h header already we might just as well make
use of it for more than one compiler.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

* qatar/master:
  lavu: Move preprocessor macros in a separate file

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

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  Fix condition for transparency warning in xsub encoder.
  Allow hiding the banner.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

untested due to lack of sample
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

untested due to lack of sample
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The code seems to have never been tested
fixing it should be quite easy but needs a sample/testcase

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f9a862dfabf_413_2889_assassin_OL.avi
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes ticket #3246.

And remove all the circular inclusions of avutil.h while at it.