1 /* 2 * Copyright (C) 2016 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 17 #ifndef android_hardware_audio_V2_0_ParametersUtil_H_ 18 #define android_hardware_audio_V2_0_ParametersUtil_H_ 19 20 #include <functional> 21 #include <memory> 22 23 #include <android/hardware/audio/2.0/types.h> 24 #include <hidl/HidlSupport.h> 25 #include <media/AudioParameter.h> 26 27 namespace android { 28 namespace hardware { 29 namespace audio { 30 namespace V2_0 { 31 namespace implementation { 32 33 using ::android::hardware::audio::V2_0::ParameterValue; 34 using ::android::hardware::audio::V2_0::Result; 35 using ::android::hardware::hidl_string; 36 using ::android::hardware::hidl_vec; 37 38 class ParametersUtil { 39 public: 40 Result getParam(const char* name, bool* value); 41 Result getParam(const char* name, int* value); 42 Result getParam(const char* name, String8* value); 43 void getParametersImpl( 44 const hidl_vec<hidl_string>& keys, 45 std::function<void(Result retval, const hidl_vec<ParameterValue>& parameters)> cb); 46 std::unique_ptr<AudioParameter> getParams(const AudioParameter& keys); 47 Result setParam(const char* name, bool value); 48 Result setParam(const char* name, int value); 49 Result setParam(const char* name, const char* value); 50 Result setParametersImpl(const hidl_vec<ParameterValue>& parameters); 51 Result setParams(const AudioParameter& param); 52 53 protected: 54 virtual ~ParametersUtil() {} 55 56 virtual char* halGetParameters(const char* keys) = 0; 57 virtual int halSetParameters(const char* keysAndValues) = 0; 58 }; 59 60 } // namespace implementation 61 } // namespace V2_0 62 } // namespace audio 63 } // namespace hardware 64 } // namespace android 65 66 #endif // android_hardware_audio_V2_0_ParametersUtil_H_ 67
