app_chanspy: reduce audio loss on the spying channel.

ChanSpy was creating its audiohook with the flags AST_AUDIOHOOK_TRIGGER_SYNC
and AST_AUDIOHOOK_SMALL_QUEUE, which caused audio frames to be lost when
queues grow too large or when read and write queues go out of sync.
Now these flags are set conditionally:
- AST_AUDIOHOOK_TRIGGER_SYNC is not set if the option "o" is set
- a new option "l" is created: if set, AST_AUDIOHOOK_SMALL_QUEUE will not
be set on the audiohook

ASTERISK-25866

Change-Id: I9c7652f41d9fa72c8691e4e70ec4fd16b047a4dd

1 files changed, 7 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index e7f0656f5..56e631570 100644
--- a/CHANGES
+++ b/CHANGES
@@ -31,6 +31,13 @@ BridgeAdd
  * A new application in Asterisk, this will join the calling channel
    to an existing bridge containing the named channel prefix.
 
+ChanSpy
+------------------
+ * Added the 'l' option, which forces ChanSpy's audiohook to use a long queue
+   to store the audio frames. This option is useful if audio loss is
+   experienced when using ChanSpy, but may introduce some delay in the audio
+   feed on the listening channel.
+
 ConfBridge
 ------------------
  * Added the ability to pass options to MixMonitor when recording is used with