Backport of "audioconvert: Support converting >64 channels" into 1.22

Backport of !6819 (merged) "audioconvert: Support converting >64 channels".

Commits:

• 399b147d audioconvert: Support converting >64 channels
• a4514c54 level: Don't post a message on EOS without a valid audio info
• 63d58fce audioconvert: Add test for 96 channel conversion

changed milestone to %1.22.13

added Audio Merge now labels

mentioned in merge request !6819 (merged)

removed Merge now label

assigned to @gstreamer-merge-bot

mentioned in commit gstreamer-backport-bot/gstreamer@854a0289

mentioned in commit gstreamer-backport-bot/gstreamer@7ca5cc2c

mentioned in commit gstreamer-backport-bot/gstreamer@01be67ce

added 3 commits

• 7ca5cc2c - audioconvert: Support converting >64 channels
• 854a0289 - level: Don't post a message on EOS without a valid audio info
• 01be67ce - audioconvert: Add test for 96 channel conversion

Compare with previous version

assigned to @gstreamer-backport-bot and unassigned @gstreamer-merge-bot

I couldn't merge this branch: CI failed! See pipeline https://gitlab.freedesktop.org/gstreamer-backport-bot/gstreamer/-/pipelines/1175568.

Looks like the unit test needs some fix-ups for 1.22

../subprojects/gst-plugins-base/tests/check/elements/audioconvert.c:1841:47: error: too many arguments to function call, expected single argument 'outcaps', have 3 arguments audioconvert = setup_audioconvert (outcaps, FALSE, &(GValue) G_VALUE_INIT);

added 1 commit

• b57993da - audioconvert: Add test for 96 channel conversion

Compare with previous version

resolved all threads

assigned to @gstreamer-merge-bot and unassigned @gstreamer-backport-bot

added 11 commits

• b57993da...9a2aa2ca - 8 commits from branch gstreamer:1.22
• b7d4ccd7 - audioconvert: Support converting >64 channels
• 76b65d64 - level: Don't post a message on EOS without a valid audio info
• 627b0f17 - audioconvert: Add test for 96 channel conversion

Compare with previous version

merged