Add function to unsubscribe from audio card event

Add function to unsubscribe from Alsacore audio card event.

BUG-AGL: SPEC-2891

Change-Id: I2b9856a8c6e795c46bf0ae7382859ea2859bf985
Signed-off-by: Jonathan Aillet <jonathan.aillet@iot.bzh>

2 files changed, 27 insertions, 7 deletions

diff --git a/src/4a-internals-hal/4a-internals-hal-alsacore-link.c b/src/4a-internals-hal/4a-internals-hal-alsacore-link.c
index b910899..7b2fd5f 100644
--- a/src/4a-internals-hal/4a-internals-hal-alsacore-link.c
+++ b/src/4a-internals-hal/4a-internals-hal-alsacore-link.c
@@ -102,8 +102,9 @@ int InternalHalGetCardInfo(afb_api_t apiHandle, json_object *requestJ, json_obje
 	return errorToReturn;
 }
 
-int InternalHalSubscribeToAlsacoreEvent(afb_api_t apiHandle,
-					json_object *subscribeQueryJ)
+int InternalHalSubscribeUnscubscribeToAlsacoreEvent(afb_api_t apiHandle,
+						    json_object *subscribeQueryJ,
+						    enum AlsacoreSubscribeUnsubscribeType subscriptionType)
 {
 	int err = 0;
 
@@ -118,14 +119,14 @@ int InternalHalSubscribeToAlsacoreEvent(afb_api_t apiHandle,
 
 	if(afb_api_call_sync(apiHandle,
 			     ALSACORE_API,
-			     ALSACORE_SUBSCRIBE_VERB,
+			     (subscriptionType == ALSACORE_SUBSCRIPTION) ? ALSACORE_SUBSCRIBE_VERB : ALSACORE_UNSUBSCRIBE_VERB,
 			     subscribeQueryJ,
 			     &responseJ,
 			     &returnedError,
 			     &returnedInfo)) {
 		AFB_API_ERROR(apiHandle,
 			      "Something went wrong during call to verb '%s' of api '%s' with error '%s' and info '%s'",
-			      ALSACORE_SUBSCRIBE_VERB,
+			      (subscriptionType == ALSACORE_SUBSCRIPTION) ? ALSACORE_SUBSCRIBE_VERB : ALSACORE_UNSUBSCRIBE_VERB,
 			      ALSACORE_API,
 			      returnedError ? returnedError : "not returned",
 			      returnedInfo ? returnedInfo : "not returned");
@@ -141,8 +142,9 @@ int InternalHalSubscribeToAlsacoreEvent(afb_api_t apiHandle,
 	return err;
 }
 
-int InternalHalSubscribeToAlsacoreCardEvent(afb_api_t apiHandle,
-					    char *cardId)
+int InternalHalSubscribeUnscubscribeToAlsacoreCardEvent(afb_api_t apiHandle,
+							char *cardId,
+							enum AlsacoreSubscribeUnsubscribeType subscriptionType)
 {
 	int err, wrapRet;
 
@@ -157,7 +159,7 @@ int InternalHalSubscribeToAlsacoreCardEvent(afb_api_t apiHandle,
 		return -1;
 	}
 
-	err = InternalHalSubscribeToAlsacoreEvent(apiHandle, subscribeQueryJ);
+	err = InternalHalSubscribeUnscubscribeToAlsacoreEvent(apiHandle, subscribeQueryJ, subscriptionType);
 	if(err) {
 		AFB_API_ERROR(apiHandle,
 			      "Error %i happened when tried to subscribe to %s card event",
@@ -171,6 +173,16 @@ int InternalHalSubscribeToAlsacoreCardEvent(afb_api_t apiHandle,
 	return 0;
 }
 
+int InternalHalSubscribeToAlsacoreCardEvent(afb_api_t apiHandle, char *cardId)
+{
+	return InternalHalSubscribeUnscubscribeToAlsacoreCardEvent(apiHandle, cardId, ALSACORE_SUBSCRIPTION);
+}
+
+int InternalHalUnsubscribeFromAlsacoreCardEvent(afb_api_t apiHandle, char *cardId)
+{
+	return InternalHalSubscribeUnscubscribeToAlsacoreCardEvent(apiHandle, cardId, ALSACORE_UNSUBSCRIPTION);
+}
+
 int InternalHalGetAlsaCtlInfo(afb_api_t apiHandle, char *cardId, struct InternalHalAlsaCtl *currentAlsaCtl, json_object **returnedDataJ)
 {
 	int wrapRet;
diff --git a/src/4a-internals-hal/4a-internals-hal-alsacore-link.h b/src/4a-internals-hal/4a-internals-hal-alsacore-link.h
index ee9adb2..84a096a 100644
--- a/src/4a-internals-hal/4a-internals-hal-alsacore-link.h
+++ b/src/4a-internals-hal/4a-internals-hal-alsacore-link.h
@@ -33,6 +33,7 @@
 #define ALSACORE_API				"alsacore"
 
 #define ALSACORE_SUBSCRIBE_VERB			"subscribe"
+#define ALSACORE_UNSUBSCRIBE_VERB		"unsubscribe"
 #define ALSACORE_GETINFO_VERB			"infoget"
 #define ALSACORE_CTLGET_VERB			"ctlget"
 #define ALSACORE_CTLSET_VERB			"ctlset"
@@ -40,12 +41,19 @@
 
 #define ALSACORE_CARD_CONTROL_EVENT_NAME	"controls"
 
+// Enum for the type of subscription/unsubscription to do with alsacore
+enum AlsacoreSubscribeUnsubscribeType {
+	ALSACORE_SUBSCRIPTION = 0,
+	ALSACORE_UNSUBSCRIPTION = 1
+};
+
 // Alsa control types map from string function
 snd_ctl_elem_type_t InternalHalMapsAlsaTypeToEnum(const char *label);
 
 // Internals HAL alsacore calls funtions
 int InternalHalGetCardInfo(afb_api_t apiHandle, json_object *requestJ, json_object **responseJ);
 int InternalHalSubscribeToAlsacoreCardEvent(afb_api_t apiHandle, char *cardId);
+int InternalHalUnsubscribeFromAlsacoreCardEvent(afb_api_t apiHandle, char *cardId);
 int InternalHalUpdateAlsaCtlProperties(afb_api_t apiHandle, char *cardId, struct InternalHalAlsaCtl *currentAlsaCtl);
 int InternalHalSetAlsaCtlValue(afb_api_t apiHandle, char *cardId, int ctlId, json_object *valuesJ);
 int InternalHalCreateAlsaCtl(afb_api_t apiHandle, char *cardId, struct InternalHalAlsaCtl *alsaCtlToCreate);