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Add dovi detection for mkv #24

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Add dovi detection for mkv #24

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Commits on Jan 15, 2022

  1. avformat/dovi_isom: Implement Dolby Vision configuration parsing/writing 

    Both parse/write implementations are based on mov/movenc.

This only adds support for the "Dolby Vision configuration box".
Other configuration boxes, such as
"Dolby Vision enhancement layer configuration box" are not supported.

The new functions will be used to implement parsing/writing the DOVI config
for Matroska, as well as to refactor both mov/movenc to use dovi_isom functions.

Signed-off-by: quietvoid <[email protected]>
Signed-off-by: Andreas Rheinhardt <[email protected]>
    @quietvoid @the-black-eagle
    quietvoid authored and the-black-eagle committed Jan 15, 2022
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  2. avformat/matroska{dec, enc}: Parse BlockAdditionMapping elements 

    Adds handling of dvcC/dvvC block addition mappings.

The parsing creates AVDOVIDecoderConfigurationRecord side data.
The configuration block is written when muxing into Matroska,
if DOVI side data is present for the track.

Most of the Matroska element parsing is based on Plex's FFmpeg source code.

Signed-off-by: quietvoid <[email protected]>
Signed-off-by: Andreas Rheinhardt <[email protected]>
    @quietvoid @the-black-eagle
    quietvoid authored and the-black-eagle committed Jan 15, 2022
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