Change Log for Release asterisk-21.10.0-rc2

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Summary:

• Commits: 2
• Commit Authors: 2
• Issues Resolved: 3
• Security Advisories Resolved: 0

User Notes:

Upgrade Notes:

Commit Authors:

• Michal Hajek: (1)
• Sean Bright: (1)

Issue and Commit Detail:

Closed Issues:

• 1276: MixMonitor produces broken recordings in bridged calls with asymmetric codecs (e.g., alaw vs G.722)
• 1279: [bug]: regression: 20.12.0 downgrades quality of wav16 recordings
• 1282: [bug]: Alternate Channel Storage Backends menuselect not enabling it

Commits By Author:

• Michal Hajek (1):

• audiohook.c: Improve frame pairing logic to avoid MixMonitor breakage with mix..

• Sean Bright (1):

• channelstorage_makeopts.xml: Remove errant XML character.

Commit List:

• channelstorage_makeopts.xml: Remove errant XML character.

Commit Details:

audiohook.c: Improve frame pairing logic to avoid MixMonitor breakage with mix..

Author: Michal Hajek Date: 2025-05-21

This patch adjusts the read/write synchronization logic in audiohook_read_frame_both() to better handle calls where participants use different codecs or sample sizes (e.g., alaw vs G.722). The previous hard threshold of 2 * samples caused MixMonitor recordings to break or stutter when frames were not aligned between both directions.

The new logic uses a more tolerant limit (1.5 * samples), which prevents audio tearing without causing excessive buffer overruns. This fix specifically addresses issues with MixMonitor when recording directly on a channel in a bridge using mixed codecs.

Reported-by: Michal Hajek michal.hajek@daktela.com

Resolves: #1276 Resolves: #1279

channelstorage_makeopts.xml: Remove errant XML character.

Author: Sean Bright Date: 2025-06-30

Resolves: #1282