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51fd43206b
There are 4 scenarios to consider when capturing audio from a channel with an audiohook: 1. There is no rx and no tx audio, so return nothing. 2. There is rx but no tx audio, so return rx. 3. There is tx but no rx audio, so return tx. 4. There is rx and tx audio, so mix them and return. The file passed as the primary argument to MixMonitor will be written to in scenarios 2, 3, and 4. However, if you pass the r() and t() options to MixMonitor, a frame will only be written to the r() file if there was rx audio and a frame will only be written to the t() file if there was tx audio. If you subsequently take the r() and t() files and try to mix them, the sides of the conversation will 'drift' and be non-representative of the user experience. This patch adds a new 'S' option to MixMonitor that injects a frame of silence on either the r() side or the t() side of the channel so that when later mixed, there is no such drift. Change-Id: Ibf5ed73a811087727bd561a89a59f4447b4ee20e
The vast majority of the Asterisk project documentation has been moved to the
project wiki:
https://wiki.asterisk.org/
Asterisk release tarballs contain an export of the wiki in PDF and plain text
form, which you can find in:
doc/AST.pdf
doc/AST.txt
Asterisk uses the Doxygen documentation software. Run "make progdocs" and open
the resulting documentation index at doc/api/index.html in a webbrowser or copy
the directory to a directory served by a webserver for remote access.