SoundTrigger.h revision b7a11d83f749ad0200778c4815e907d011d4b5d3 
1/*
2 * Copyright (C) 2014 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_SOUNDTRIGGER_H
18#define ANDROID_HARDWARE_SOUNDTRIGGER_H
19
20#include <binder/IBinder.h>
21#include <soundtrigger/SoundTriggerCallback.h>
22#include <soundtrigger/ISoundTrigger.h>
23#include <soundtrigger/ISoundTriggerHwService.h>
24#include <soundtrigger/ISoundTriggerClient.h>
25#include <system/sound_trigger.h>
26
27namespace android {
28
29class MemoryDealer;
30
31class SoundTrigger : public BnSoundTriggerClient,
32                        public IBinder::DeathRecipient
33{
34public:
35    static  status_t listModules(struct sound_trigger_module_descriptor *modules,
36                                 uint32_t *numModules);
37    static  sp<SoundTrigger> attach(const sound_trigger_module_handle_t module,
38                                       const sp<SoundTriggerCallback>& callback);
39
40            virtual ~SoundTrigger();
41
42            void detach();
43
44            status_t loadSoundModel(const sp<IMemory>& modelMemory,
45                                            sound_model_handle_t *handle);
46
47            status_t unloadSoundModel(sound_model_handle_t handle);
48
49            status_t startRecognition(sound_model_handle_t handle, const sp<IMemory>& dataMemory);
50            status_t stopRecognition(sound_model_handle_t handle);
51
52            // BpSoundTriggerClient
53            virtual void onRecognitionEvent(const sp<IMemory>& eventMemory);
54
55            //IBinder::DeathRecipient
56            virtual void binderDied(const wp<IBinder>& who);
57
58            static status_t stringToGuid(const char *str, sound_trigger_uuid_t *guid);
59            static status_t guidToString(const sound_trigger_uuid_t *guid,
60                                         char *str, size_t maxLen);
61
62private:
63            SoundTrigger(sound_trigger_module_handle_t module,
64                            const sp<SoundTriggerCallback>&);
65            static const sp<ISoundTriggerHwService>& getSoundTriggerHwService();
66
67            Mutex                               mLock;
68            sp<ISoundTrigger>                   mISoundTrigger;
69            const sound_trigger_module_handle_t mModule;
70            sp<SoundTriggerCallback>            mCallback;
71};
72
73}; // namespace android
74
75#endif //ANDROID_HARDWARE_SOUNDTRIGGER_H
76