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:
~ParametersUtil()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