RGB32(AV_PIX_FMT_BGRA on intel platforms) format may be used as overlay with alpha blending.
So add AV_PIX_FMT_BGRA format support.

One example of alpha blending overlay: ffmpeg -hwaccel qsv -c:v h264_qsv -i BA1_Sony_D.jsv
-filter_complex 'movie=lena-rgba.png,hwupload=extra_hw_frames=16[a];[0:v][a]overlay_qsv=x=10:y=10'
-c:v h264_qsv -y out.mp4

Rename RGB32 to be BGRA to make it clearer as Mark Thompson's suggestion.

V2: Add P010 format support else will introduce HEVC 10bit encoding regression.
    Thanks for LinJie's discovery.
Signed-off-by: Zhong Li <zhong.li@intel.com>
Verified-by: Fu, Linjie <linjie.fu@intel.com>

This allows switching between absolute (LUFS) and relativ (LU) display
in the status line.
Signed-off-by: Daniel Molkentin <daniel@molkentin.de>
Signed-off-by: Conrad Zelck <c.zelck@imail.de>

This eases meeting the target level during live mixing.
Signed-off-by: Daniel Molkentin <daniel@molkentin.de>
Signed-off-by: Conrad Zelck <c.zelck@imail.de>

Allow to show short-term instead of momentary in gauge. Useful for monitoring
whilst live mixing.
Signed-off-by: Daniel Molkentin <daniel@molkentin.de>
Signed-off-by: Conrad Zelck <c.zelck@imail.de>

Signed-off-by: Daniel Molkentin <daniel@molkentin.de>
Signed-off-by: Conrad Zelck <c.zelck@imail.de>

Signed-off-by: Daniel Molkentin <daniel@molkentin.de>
Signed-off-by: Conrad Zelck <c.zelck@imail.de>

Fixes Coverity CID 1416352.
Signed-off-by: Marton Balint <cus@passwd.hu>

Fixes Coverity CID 1427273.
Signed-off-by: Marton Balint <cus@passwd.hu>

Fixes Coverity CID 1439936.
Signed-off-by: Marton Balint <cus@passwd.hu>

If we don't copy this value first, it is seen as 0 by h264_slice_header_init,
due to zero-allocation of the new context, triggering an old hack that
multiplied the denominator by 2 for files produced by old x264 versions, but
only if more than one thread was used.

Fixes #7475 and #7083.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Also properly return AVERROR(ERANGE) in case of actual overflows.
Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Marton Balint <cus@passwd.hu>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This avoids surprising developers. Its bad to surprise developers with
such unexpected things.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

We check for the documented explanation of the "Ignore code" in extract_extradata_check() already
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The l modifier does nothing in C99 and it was undefined in C89 for %f
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The l modifier does nothing in C99 and it was undefined in C89 for %f
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

This was the only case in the source that uses a hexadecimal shift value.
The change removed a special case in respect to greping
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Found-by: kierank
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

* commit '21733b39':
  lavu/qsv: fix a random hwupload failure regression

Fixes CID #1439585.
Merged-by: Mark Thompson <sw@jkqxz.net>

Fixes ticket #7441.

for block contrast calculate, the block is like this:

|<---------------- stride-----------------------|
+----------------------------------------------->  X
|
|            w = 16
|    (cx,cy)+------+
|           |      |
|h=blocksize|      |
|           |      |
|           +------+
V

Y

so we calc the block contrast use:
   (cy + y) * stride + (cx + x)
Signed-off-by: Jun Zhao <mypopydev@gmail.com>

It can't be set for 4:2:2 streams.