src/can-signals.cpp

   1 /*
   2  * Copyright (C) 2015, 2016 "IoT.bzh"
   3  * Author "Romain Forlot" <romain.forlot@iot.bzh>
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *       http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include "can-signals.hpp"
  19
  20 #include <fnmatch.h>
  21
  22 #include "low-can-binding.hpp"
  23
  24 /**
  25  * @brief Dumb SIGNALS array. It is composed by CanMessageSet
  26  * SIGNALS[MESSAGE_SET_ID][CanSignal]
  27  */
  28 std::vector<std::vector<CanSignal>> SIGNALS {
  29         {}// message set: example
  30 };
  31
  32 /**
  33 * @brief Mutex allowing safe manipulation on subscribed_signals map.
  34 * @desc To ensure that the map object isn't modified when we read it, you
  35 *  have to set this mutex before use subscribed_signals map object.
  36 */
  37 std::mutex subscribed_signals_mutex;
  38
  39 std::mutex& get_subscribed_signals_mutex()
  40 {
  41         return subscribed_signals_mutex;
  42 }
  43
  44 const std::vector<CanSignal> getSignals()
  45 {
  46         return SIGNALS[MESSAGE_SET_ID];
  47 }
  48
  49 size_t getSignalCount()
  50 {
  51         return SIGNALS[MESSAGE_SET_ID].size();
  52 }
  53
  54 std::vector<CanSignal> find_can_signals(openxc_DynamicField& key)
  55 {
  56         std::vector<CanSignal> signals;
  57
  58         switch(key.type)
  59         {
  60                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
  61                         for(const CanSignal& s : getSignals())
  62                         {
  63                                 if(fnmatch(key.string_value, s.genericName, FNM_CASEFOLD) == 0)
  64                                         signals.push_back(s);
  65                         }
  66                         break;
  67                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
  68                         for(const CanSignal& s : getSignals())
  69                         {
  70                                 CanMessageDefinition *msg_def = s.message;
  71                                 if(msg_def->id == key.numeric_value)
  72                                         signals.push_back(s);
  73                         }
  74                         break;
  75                 default:
  76                         ERROR(binder_interface, "find_can_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
  77                         CanSignal cs;
  78                         ::memset(&cs, 0, sizeof(CanSignal));
  79                         signals.push_back(cs);
  80                         return signals;
  81                         break;
  82         }
  83         return signals;
  84 }
  85
  86 inline uint32_t get_CanSignal_id(const CanSignal& sig)
  87 {
  88         return sig.message->id;
  89 }
  90
  91 const std::map<std::string, struct afb_event> get_subscribed_signals()
  92 {
  93         return subscribed_signals;
  94 }