Improve T.38 negotiation by exchanging session parameters between application and channel.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@203699 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 27 insertions, 1 deletions

diff --git a/include/asterisk/frame.h b/include/asterisk/frame.h
index 8b79a5e99..56d76d927 100644
--- a/include/asterisk/frame.h
+++ b/include/asterisk/frame.h
@@ -323,7 +323,8 @@ enum ast_control_frame_type {
 	AST_CONTROL_SRCUPDATE = 20,     /*!< Indicate source of media has changed */
 	AST_CONTROL_TRANSFER = 21,      /*!< Indicate status of a transfer request */
 	AST_CONTROL_CONNECTED_LINE = 22,/*!< Indicate connected line has changed */
-	AST_CONTROL_REDIRECTING = 23    /*!< Indicate redirecting id has changed */
+	AST_CONTROL_REDIRECTING = 23,    /*!< Indicate redirecting id has changed */
+	AST_CONTROL_T38_PARAMETERS = 24, /*! T38 state change request/notification with parameters */
 };
 
 enum ast_control_t38 {
@@ -334,6 +335,31 @@ enum ast_control_t38 {
 	AST_T38_REFUSED			/*!< T38 refused for some reason (usually rejected by remote end) */
 };
 
+enum ast_control_t38_rate {
+	AST_T38_RATE_2400 = 0,
+	AST_T38_RATE_4800,
+	AST_T38_RATE_7200,
+	AST_T38_RATE_9600,
+	AST_T38_RATE_12000,
+	AST_T38_RATE_14400,
+};
+
+enum ast_control_t38_rate_management {
+	AST_T38_RATE_MANAGEMENT_TRANSFERED_TCF = 0,
+	AST_T38_RATE_MANAGEMENT_LOCAL_TCF,
+};
+
+struct ast_control_t38_parameters {
+	enum ast_control_t38 request_response;                /*!< Request or response of the T38 control frame */
+	unsigned int version;                                 /*!< Supported T.38 version */
+	unsigned int max_datagram;                            /*!< Maximum datagram size supported */
+	enum ast_control_t38_rate rate;                       /*!< Maximum fax rate supported */
+	enum ast_control_t38_rate_management rate_management; /*!< Rate management setting */
+	unsigned int fill_bit_removal:1;                      /*!< Set if fill bit removal should be used */
+	unsigned int transcoding_mmr:1;                       /*!< Set if MMR transcoding should be used */
+	unsigned int transcoding_jbig:1;                      /*!< Set if JBIG transcoding should be used */
+};
+
 enum ast_control_transfer {
 	AST_TRANSFER_SUCCESS = 0, /*!< Transfer request on the channel worked */
 	AST_TRANSFER_FAILED,      /*!< Transfer request on the channel failed */