Blackframe video filter now sets metadata accordingly.

the libavfilter/vf_blackframe.c filter now not only logs detected
values, but also sets frame metadata. Currently, only `pblack` value is set
but `SET_META` macro has been introduced to ease development in the future.

Signed-off-by: Stepan Bujnak <stepan.bujnak@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavf/matroska: Add functions for WebM DASH Manifest

Add functions and logic to matroskadec for use by the WebM DASH Manifest
XML Muxer. The actual muxer is added in a future patch.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavf: Add WebM DASH Manifest Muxer

This patch adds the ability to generate WebM DASH manifest XML using
ffmpeg. A sample command line would be as follows:

ffmpeg \
  -f webm_dash_manifest -i video1.webm \
  -f webm_dash_manifest -i video2.webm \
  -f webm_dash_manifest -i audio1.webm \
  -f webm_dash_manifest -i audio2.webm \
  -map 0 -map 1 -map 2 -map 3 \
  -c copy \
  -f webm_dash_manifest \
  -adaptation_sets “id=0,streams=0,1 id=1,streams=2,3” \
  manifest.xml

It works by exporting necessary fields as metadata tags in matroskadec
and use those values to write the appropriate XML fields as per the WebM
DASH Specification [1]. Some ideas are adopted from webm-tools project
[2].

[1]
https://sites.google.com/a/webmproject.org/wiki/adaptive-streaming/webm-dash-specification
[2]
https://chromium.googlesource.com/webm/webm-tools/+/master/webm_dash_manifest/

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/matroskadec: fix declaration after statement

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
diracdec: remove unused dsputil context

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avdevice/avfoundation: kCVPixelFormatType_OneComponent8 only exists from 10.8 onward

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/drawtext: Add basic text shaping using libfribidi

Fixes ticket #3758

Reviewed-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/hevc: clear HEVClcList[i] on allocation

Fixes fate failure with --enable-memory-poisoning && make THREAD_TYPE=slice THREADS=7  fate-hevc-conformance-ENTP_C_Qualcomm_1

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/APIchanges: update

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
g2meet: allow size changes within original sizes
Changelog: change  "version <next>" to "version 2.3"

Found-by: jamrial
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '14b4e64eabc84c5a5e57c8ccc56bbeb95380823b'

* commit '14b4e64eabc84c5a5e57c8ccc56bbeb95380823b':
  g2meet: allow size changes within original sizes

Merged-by: Michael Niedermayer <michaelni@gmx.at>
diracdec: don't call ff_emulated_edge_mc_8 directly

Use the videodsp function pointer instead.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/snowdec: remove mpegvideoencdsp dependency

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/snow: only allocate space for edges when encoding

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Support raw dvdsub palette as stored on normal dvd's

This is how the palette is stored on dvd's. Currently
only xbmc passes the palette information to libavcodec
this way.
Check return value of avio_seek and avoid modifying state if it fails

The code still modifies state if the timestamp is not found. Not
sure exactly how to avoid that.
asf hacks
if av_read_packet returns AVERROR_IO, we are done. ffmpeg's codecs might or might not handle returning any completed demuxed packets correctly
added: Ticket #7187, TV Teletext support for DVB EBU Teletext streams