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diff --git a/lib/4a-hal-utilities/4a-hal-utilities-alsa-data.h b/lib/4a-hal-utilities/4a-hal-utilities-alsa-data.h
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+/*
+* Copyright (C) 2019 "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.
+*/
+
+#ifndef _HAL_UTILITIES_ALSA_DATA_INCLUDE_
+#define _HAL_UTILITIES_ALSA_DATA_INCLUDE_
+
+#include <stdio.h>
+
+#include <json-c/json.h>
+
+#include <alsa/asoundlib.h>
+
+#include <afb/afb-binding.h>
+
+#include <ctl-config.h>
+
+struct InternalHalAlsaDBScale {
+ int min;
+ int max;
+ int step;
+ int mute;
+};
+
+struct InternalHalAlsaCtlProperties {
+ snd_ctl_elem_type_t type;
+ int count;
+ int minval;
+ int maxval;
+ int step;
+ // TBD JAI : use them
+ const char **enums;
+ struct InternalHalAlsaDBScale *dbscale;
+};
+
+struct InternalHalAlsaCtl {
+ char *name;
+ int numid;
+ int value;
+ struct InternalHalAlsaCtlProperties alsaCtlProperties;
+ struct InternalHalAlsaCtlProperties *alsaCtlCreation;
+};
+
+struct InternalHalAlsaMap {
+ const char *uid;
+ char *info;
+ afb_event_t alsaControlEvent;
+ struct InternalHalAlsaCtl ctl;
+ json_object *actionJ;
+ CtlActionT *action;
+};
+
+struct InternalHalAlsaMapT {
+ struct InternalHalAlsaMap *ctls;
+ unsigned int ctlsCount;
+};
+
+// Free contents of 'CtlHalAlsaMapT' data structure
+uint8_t HalUtlFreeAlsaCtlsMap(struct InternalHalAlsaMapT *alsaCtlsMap);
+
+#endif /* _HAL_UTILITIES_ALSA_DATA_INCLUDE_ */ \ No newline at end of file