1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef ANDROID_HARDWARE_BROADCASTRADIO_V1_1_VIRTUALRADIO_H 17 #define ANDROID_HARDWARE_BROADCASTRADIO_V1_1_VIRTUALRADIO_H 18 19 #include "VirtualProgram.h" 20 21 #include <mutex> 22 #include <vector> 23 24 namespace android { 25 namespace hardware { 26 namespace broadcastradio { 27 namespace V1_1 { 28 namespace implementation { 29 30 /** 31 * A radio frequency space mock. 32 * 33 * This represents all broadcast waves in the air for a given radio technology, 34 * not a captured station list in the radio tuner memory. 35 * 36 * It's meant to abstract out radio content from default tuner implementation. 37 */ 38 class VirtualRadio { 39 public: 40 VirtualRadio(const std::vector<VirtualProgram> initialList); 41 42 std::vector<VirtualProgram> getProgramList(); 43 bool getProgram(const V1_1::ProgramSelector& selector, VirtualProgram& program); 44 45 private: 46 std::mutex mMut; 47 std::vector<VirtualProgram> mPrograms; 48 }; 49 50 /** 51 * Get virtual radio space for a given radio class. 52 * 53 * As a space, each virtual radio always exists. For example, DAB frequencies 54 * exists in US, but contains no programs. 55 * 56 * The lifetime of the virtual radio space is virtually infinite, but for the 57 * needs of default implementation, it's bound with the lifetime of default 58 * implementation process. 59 * 60 * Internally, it's a static object, so trying to access the reference during 61 * default implementation library unloading may result in segmentation fault. 62 * It's unlikely for testing purposes. 63 * 64 * @param classId A class of radio technology. 65 * @return A reference to virtual radio space for a given technology. 66 */ 67 VirtualRadio& getRadio(V1_0::Class classId); 68 69 VirtualRadio& getAmRadio(); 70 VirtualRadio& getFmRadio(); 71 VirtualRadio& getSatRadio(); 72 VirtualRadio& getDigitalRadio(); 73 74 } // namespace implementation 75 } // namespace V1_1 76 } // namespace broadcastradio 77 } // namespace hardware 78 } // namespace android 79 80 #endif // ANDROID_HARDWARE_BROADCASTRADIO_V1_1_VIRTUALRADIO_H 81
