From 4cbdfbe481d7f9b448663418dccc88b017f9ce69 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke@openmethods.com>
Date: Sat, 21 Aug 2010 19:43:53 -0500
Subject: [PATCH] switch_core_asr interfaces for enable_grammar,
 disable_grammar, and disable_all_grammars

---
 src/include/switch_core.h              | 24 ++++++++++++++++
 src/include/switch_module_interfaces.h |  7 +++++
 src/switch_core_asr.c                  | 40 ++++++++++++++++++++++++++
 3 files changed, 71 insertions(+)

diff --git a/src/include/switch_core.h b/src/include/switch_core.h
index 650ffc15fb..26a048cdb2 100644
--- a/src/include/switch_core.h
+++ b/src/include/switch_core.h
@@ -24,6 +24,7 @@
  * Contributor(s):
  * 
  * Anthony Minessale II <anthm@freeswitch.org>
+ * Luke Dashjr <luke@openmethods.com> (OpenMethods, LLC)
  *
  *
  * switch_core.h -- Core Library
@@ -1747,6 +1748,29 @@ SWITCH_DECLARE(switch_status_t) switch_core_asr_load_grammar(switch_asr_handle_t
 */
 SWITCH_DECLARE(switch_status_t) switch_core_asr_unload_grammar(switch_asr_handle_t *ah, const char *name);
 
+/*!
+  \brief Enable a grammar from an asr handle
+  \param ah the handle to enable the grammar from
+  \param name the name of the grammar to enable
+  \return SWITCH_STATUS_SUCCESS
+*/
+SWITCH_DECLARE(switch_status_t) switch_core_asr_enable_grammar(switch_asr_handle_t *ah, const char *name);
+
+/*!
+  \brief Disable a grammar from an asr handle
+  \param ah the handle to disable the grammar from
+  \param name the name of the grammar to disable
+  \return SWITCH_STATUS_SUCCESS
+*/
+SWITCH_DECLARE(switch_status_t) switch_core_asr_disable_grammar(switch_asr_handle_t *ah, const char *name);
+
+/*!
+  \brief Disable all grammars from an asr handle
+  \param ah the handle to disable the grammars from
+  \return SWITCH_STATUS_SUCCESS
+*/
+SWITCH_DECLARE(switch_status_t) switch_core_asr_disable_all_grammars(switch_asr_handle_t *ah);
+
 /*!
   \brief Pause detection on an asr handle
   \param ah the handle to pause
diff --git a/src/include/switch_module_interfaces.h b/src/include/switch_module_interfaces.h
index 078b83d2fd..e0119b4d15 100644
--- a/src/include/switch_module_interfaces.h
+++ b/src/include/switch_module_interfaces.h
@@ -24,6 +24,7 @@
  * Contributor(s):
  * 
  * Anthony Minessale II <anthm@freeswitch.org>
+ * Luke Dashjr <luke@openmethods.com> (OpenMethods, LLC)
  *
  *
  * switch_module_interfaces.h -- Module Interface Definitions
@@ -393,6 +394,12 @@ struct switch_asr_interface {
 	switch_mutex_t *reflock;
 	switch_loadable_module_interface_t *parent;
 	struct switch_asr_interface *next;
+	/*! function to enable a grammar to the asr interface */
+	switch_status_t (*asr_enable_grammar) (switch_asr_handle_t *ah, const char *name);
+	/*! function to disable a grammar to the asr interface */
+	switch_status_t (*asr_disable_grammar) (switch_asr_handle_t *ah, const char *name);
+	/*! function to disable all grammars to the asr interface */
+	switch_status_t (*asr_disable_all_grammars) (switch_asr_handle_t *ah);
 };
 
 /*! an abstract representation of an asr speech interface. */
diff --git a/src/switch_core_asr.c b/src/switch_core_asr.c
index fa4446ec46..691011a285 100644
--- a/src/switch_core_asr.c
+++ b/src/switch_core_asr.c
@@ -27,6 +27,7 @@
  * Michael Jerris <mike@jerris.com>
  * Paul D. Tinsley <pdt at jackhammer.org>
  * Christopher M. Rienzo <chris@rienzo.net>
+ * Luke Dashjr <luke@openmethods.com> (OpenMethods, LLC)
  *
  *
  * switch_core_asr.c -- Main Core Library (Speech Detection Interface)
@@ -160,6 +161,45 @@ SWITCH_DECLARE(switch_status_t) switch_core_asr_unload_grammar(switch_asr_handle
 	return status;
 }
 
+SWITCH_DECLARE(switch_status_t) switch_core_asr_enable_grammar(switch_asr_handle_t *ah, const char *name)
+{
+	switch_status_t status = SWITCH_STATUS_FALSE;
+
+	switch_assert(ah != NULL);
+
+	if (ah->asr_interface->asr_enable_grammar) {
+		status = ah->asr_interface->asr_enable_grammar(ah, name);
+	}
+
+	return status;
+}
+
+SWITCH_DECLARE(switch_status_t) switch_core_asr_disable_grammar(switch_asr_handle_t *ah, const char *name)
+{
+	switch_status_t status = SWITCH_STATUS_FALSE;
+
+	switch_assert(ah != NULL);
+
+	if (ah->asr_interface->asr_disable_grammar) {
+		status = ah->asr_interface->asr_disable_grammar(ah, name);
+	}
+
+	return status;
+}
+
+SWITCH_DECLARE(switch_status_t) switch_core_asr_disable_all_grammars(switch_asr_handle_t *ah)
+{
+	switch_status_t status = SWITCH_STATUS_FALSE;
+
+	switch_assert(ah != NULL);
+
+	if (ah->asr_interface->asr_disable_all_grammars) {
+		status = ah->asr_interface->asr_disable_all_grammars(ah);
+	}
+
+	return status;
+}
+
 SWITCH_DECLARE(switch_status_t) switch_core_asr_pause(switch_asr_handle_t *ah)
 {
 	switch_assert(ah != NULL);