Handle hal status using card presence and mixer init

Test audio card presence at hal startup using alsacore call.
Handling a new state of hal.
Move alsacore link files into 4a-hal-controllers.
Check state of hal before mixer initialization call.
Actualize hal state if mixer initlialization ends well.
Add a sndCardId filed to 'SpecificHalData' structure which will contain
audio card if (from alsa).

Change-Id: I2e82a14ee6ba6e63f06fe2b498587783941b7b98
Signed-off-by: Jonathan Aillet <jonathan.aillet@iot.bzh>

1 files changed, 79 insertions, 0 deletions

diff --git a/4a-hal/4a-hal-controllers/4a-hal-controllers-alsacore-link.c b/4a-hal/4a-hal-controllers/4a-hal-controllers-alsacore-link.c
new file mode 100644
index 0000000..37d6447
--- /dev/null
+++ b/4a-hal/4a-hal-controllers/4a-hal-controllers-alsacore-link.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2018 "IoT.bzh"
+ * Author Jonathan Aillet <jonathan.aillet@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "../4a-hal-utilities/4a-hal-utilities-data.h"
+#include "../4a-hal-utilities/4a-hal-utilities-appfw-responses-handler.h"
+
+#include "4a-hal-controllers-alsacore-link.h"
+
+/*******************************************************************************
+ *		HAL controllers alsacore calls funtions			       *
+ ******************************************************************************/
+
+bool HalCtlsGetCardIdByCardPath(afb_dynapi *apiHandle, struct SpecificHalData *currentCtlHalData)
+{
+	int *cardId;
+
+	char *cardIdString = NULL;
+	char **returnedStatus, **returnedInfo;
+
+	enum CallError returnedError;
+
+	json_object *toSendJ, *returnJ, *responsJ, *devidJ;
+
+	cardId = alloca(sizeof(int));
+	*cardId = -1;
+
+	wrap_json_pack(&toSendJ, "{s:s}", "devpath", currentCtlHalData->sndCard);
+
+	if(afb_dynapi_call_sync(apiHandle, ALSACORE_API, ALSACORE_GETINFO_VERB, toSendJ, &returnJ)) {
+		returnedStatus = alloca(sizeof(char *));
+		returnedInfo = alloca(sizeof(char *));
+
+		returnedError = HalUtlHandleAppFwCallError(apiHandle, ALSACORE_API, ALSACORE_GETINFO_VERB, returnJ, returnedStatus, returnedInfo);
+		AFB_DYNAPI_WARNING(apiHandle,
+				   "Error %i during call to verb %s of %s api",
+				   (int) returnedError,
+				   ALSACORE_GETINFO_VERB,
+				   ALSACORE_API);
+	}
+	else if(json_object_object_get_ex(returnJ, "response", &responsJ)) {
+		if(json_object_object_get_ex(responsJ, "devid", &devidJ) && json_object_is_type(devidJ, json_type_string)) {
+			cardIdString = (char *) json_object_get_string(devidJ);
+			if(sscanf(cardIdString, "hw:%i", cardId) <= 0)
+				AFB_DYNAPI_WARNING(apiHandle, "Couldn't get valid devid from string: '%s'", cardIdString);
+		}
+		else {
+			AFB_DYNAPI_WARNING(apiHandle, "Response devid is not present/valid");
+		}
+
+		currentCtlHalData->sndCardId = *cardId;
+
+		return true;
+	}
+
+	currentCtlHalData->sndCardId = *cardId;
+
+	return false;
+}
+