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AMI PlayDTMF Action: Make not compete with channel's media thread.

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There can be one and only one thread handling a channel's media at a time.
Otherwise, we don't know which thread is going to handle the media frames.

ASTERISK-27625

Change-Id: Ia341f1a6f4d54f2022261abec9021fe5b2eb4905
This commit is contained in:
Richard Mudgett
2018-06-13 13:05:03 -05:00
parent 986cffa18e
commit 7d874c1af7
3 changed files with 37 additions and 3 deletions
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18
include/asterisk/channel.h
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@@ -2177,13 +2177,31 @@ int ast_recvchar(struct ast_channel *chan, int timeout);
/*!
* \brief Send a DTMF digit to a channel.
*
* \param chan channel to act upon
* \param digit the DTMF digit to send, encoded in ASCII
* \param duration the duration of the digit ending in ms
*
* \pre This must only be called by the channel's media handler thread.
*
* \return 0 on success, -1 on failure
*/
int ast_senddigit(struct ast_channel *chan, char digit, unsigned int duration);
/*!
* \brief Send a DTMF digit to a channel from an external thread.
*
* \param chan channel to act upon
* \param digit the DTMF digit to send, encoded in ASCII
* \param duration the duration of the digit ending in ms
*
* \pre This must only be called by threads that are not the channel's
* media handler thread.
*
* \return 0 on success, -1 on failure
*/
int ast_senddigit_external(struct ast_channel *chan, char digit, unsigned int duration);
/*!
* \brief Send a DTMF digit to a channel.
* \param chan channel to act upon