avcodec: use ch_layout on audio decoder

encoder side is handled in !3854 (merged)

changed milestone to %4.0

added Component::Decoders label

tested by playing video with stereo track and 7.1 channel wav using avcodec as codec.

added MRStatus::Reviewable label

added MRStatus::InReview label and removed MRStatus::Reviewable label

added 2 commits

• c7f1f0c3 - avcodec: audio decoder to use ch_layout
• 6ca61acb - avcodec/audio: make channel mapping array 0 terminated

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resolved all threads

approved this merge request

added MRStatus::Acceptable label and removed MRStatus::InReview label

approved this merge request

added 36 commits

• 6ca61acb...aedff471 - 33 commits from branch videolan:master
• 6bf052fb - avcodec: use p_dec->fmt_out instead of context channels on audio channel-count
• dda3880c - avcodec: audio decoder to use ch_layout
• 75532f91 - avcodec/audio: make channel mapping array 0 terminated

Compare with previous version

added MRStatus::Accepted label and removed MRStatus::Acceptable label

MR Acceptance result

This MergeRequest has been Accepted! Congratulations.

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• MR should be considered mergeable by Gitlab
• Last pipeline should be successful
• MergeRequest should have at least one external review and/or vote
• All threads should be resolved, and score >= 0
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added 7 commits

• 75532f91...85c48fb8 - 4 commits from branch videolan:master
• bddf5ba1 - avcodec: use p_dec->fmt_out instead of context channels on audio channel-count
• 496f0f2a - avcodec: audio decoder to use ch_layout
• 0ff86bf8 - avcodec/audio: make channel mapping array 0 terminated

Compare with previous version

enabled an automatic merge when the pipeline for 0ff86bf8 succeeds

merged