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Add a non-invasive API for application level manipulation of T38 on a channel. This uses control frames (so they can even pass across IAX2) to negotiate T38 and provided a way of getting the current status of T38 using queryoption. This should by no means cause any issues and if it does I will take responsibility for it.

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(closes issue #11873)
Reported by: dimas
Patches:
      v4-t38-api.patch uploaded by dimas (license 88)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@103799 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2008-02-18 23:47:01 +00:00
parent 6c3a7a3e51
commit e54da94808
5 changed files with 194 additions and 46 deletions
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15
include/asterisk/frame.h
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@@ -292,6 +292,15 @@ enum ast_control_frame_type {
AST_CONTROL_HOLD = 16, /*!< Indicate call is placed on hold */
AST_CONTROL_UNHOLD = 17, /*!< Indicate call is left from hold */
AST_CONTROL_VIDUPDATE = 18, /*!< Indicate video frame update */
AST_CONTROL_T38 = 19 /*!< T38 state change request/notification */
};
enum ast_control_t38 {
AST_T38_REQUEST_NEGOTIATE = 1, /*!< Request T38 on a channel (voice to fax) */
AST_T38_REQUEST_TERMINATE, /*!< Terminate T38 on a channel (fax to voice) */
AST_T38_NEGOTIATED, /*!< T38 negotiated (fax mode) */
AST_T38_TERMINATED, /*!< T38 terminated (back to voice) */
AST_T38_REFUSED /*!< T38 refused for some reason (usually rejected by remote end) */
};
#define AST_SMOOTHER_FLAG_G729 (1 << 0)
@@ -340,6 +349,12 @@ enum ast_control_frame_type {
/*! Explicitly enable or disable echo cancelation for the given channel */
#define AST_OPTION_ECHOCAN 8
/* !
* Read-only. Allows query current status of T38 on the channel.
* data: ast_t38state
*/
#define AST_OPTION_T38_STATE 10
struct oprmode {
struct ast_channel *peer;
int mode;