ISoundTrigger.cpp revision b7a11d83f749ad0200778c4815e907d011d4b5d3 
1/*
2**
3** Copyright 2014, The Android Open Source Project
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#define LOG_TAG "ISoundTrigger"
19#include <utils/Log.h>
20#include <utils/Errors.h>
21#include <binder/IMemory.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
29enum {
30    DETACH = IBinder::FIRST_CALL_TRANSACTION,
31    LOAD_SOUND_MODEL,
32    UNLOAD_SOUND_MODEL,
33    START_RECOGNITION,
34    STOP_RECOGNITION,
35};
36
37class BpSoundTrigger: public BpInterface<ISoundTrigger>
38{
39public:
40    BpSoundTrigger(const sp<IBinder>& impl)
41        : BpInterface<ISoundTrigger>(impl)
42    {
43    }
44
45    void detach()
46    {
47        ALOGV("detach");
48        Parcel data, reply;
49        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
50        remote()->transact(DETACH, data, &reply);
51    }
52
53    status_t loadSoundModel(const sp<IMemory>&  modelMemory,
54                                    sound_model_handle_t *handle)
55    {
56        if (modelMemory == 0 || handle == NULL) {
57            return BAD_VALUE;
58        }
59        Parcel data, reply;
60        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
61        data.writeStrongBinder(modelMemory->asBinder());
62        status_t status = remote()->transact(LOAD_SOUND_MODEL, data, &reply);
63        if (status != NO_ERROR ||
64                (status = (status_t)reply.readInt32()) != NO_ERROR) {
65            return status;
66        }
67        reply.read(handle, sizeof(sound_model_handle_t));
68        return status;
69    }
70
71    virtual status_t unloadSoundModel(sound_model_handle_t handle)
72    {
73        Parcel data, reply;
74        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
75        data.write(&handle, sizeof(sound_model_handle_t));
76        status_t status = remote()->transact(UNLOAD_SOUND_MODEL, data, &reply);
77        if (status != NO_ERROR) {
78            status = (status_t)reply.readInt32();
79        }
80        return status;
81    }
82
83    virtual status_t startRecognition(sound_model_handle_t handle,
84                                      const sp<IMemory>& dataMemory)
85    {
86        Parcel data, reply;
87        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
88        data.write(&handle, sizeof(sound_model_handle_t));
89        if (dataMemory == 0) {
90            data.writeInt32(0);
91        } else {
92            data.writeInt32(dataMemory->size());
93        }
94        data.writeStrongBinder(dataMemory->asBinder());
95        status_t status = remote()->transact(START_RECOGNITION, data, &reply);
96        if (status != NO_ERROR) {
97            status = (status_t)reply.readInt32();
98        }
99        return status;
100    }
101
102    virtual status_t stopRecognition(sound_model_handle_t handle)
103    {
104        Parcel data, reply;
105        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
106        data.write(&handle, sizeof(sound_model_handle_t));
107        status_t status = remote()->transact(STOP_RECOGNITION, data, &reply);
108        if (status != NO_ERROR) {
109            status = (status_t)reply.readInt32();
110        }
111        return status;
112    }
113
114};
115
116IMPLEMENT_META_INTERFACE(SoundTrigger, "android.hardware.ISoundTrigger");
117
118// ----------------------------------------------------------------------
119
120status_t BnSoundTrigger::onTransact(
121    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
122{
123    switch(code) {
124        case DETACH: {
125            ALOGV("DETACH");
126            CHECK_INTERFACE(ISoundTrigger, data, reply);
127            detach();
128            return NO_ERROR;
129        } break;
130        case LOAD_SOUND_MODEL: {
131            CHECK_INTERFACE(ISoundTrigger, data, reply);
132            sp<IMemory> modelMemory = interface_cast<IMemory>(
133                data.readStrongBinder());
134            sound_model_handle_t handle;
135            status_t status = loadSoundModel(modelMemory, &handle);
136            reply->writeInt32(status);
137            if (status == NO_ERROR) {
138                reply->write(&handle, sizeof(sound_model_handle_t));
139            }
140            return NO_ERROR;
141        }
142        case UNLOAD_SOUND_MODEL: {
143            CHECK_INTERFACE(ISoundTrigger, data, reply);
144            sound_model_handle_t handle;
145            data.read(&handle, sizeof(sound_model_handle_t));
146            status_t status = unloadSoundModel(handle);
147            reply->writeInt32(status);
148            return NO_ERROR;
149        }
150        case START_RECOGNITION: {
151            CHECK_INTERFACE(ISoundTrigger, data, reply);
152            sound_model_handle_t handle;
153            data.read(&handle, sizeof(sound_model_handle_t));
154            sp<IMemory> dataMemory;
155            if (data.readInt32() != 0) {
156                dataMemory = interface_cast<IMemory>(data.readStrongBinder());
157            }
158            status_t status = startRecognition(handle, dataMemory);
159            reply->writeInt32(status);
160            return NO_ERROR;
161        }
162        case STOP_RECOGNITION: {
163            CHECK_INTERFACE(ISoundTrigger, data, reply);
164            sound_model_handle_t handle;
165            data.read(&handle, sizeof(sound_model_handle_t));
166            status_t status = stopRecognition(handle);
167            reply->writeInt32(status);
168            return NO_ERROR;
169        }
170        default:
171            return BBinder::onTransact(code, data, reply, flags);
172    }
173}
174
175// ----------------------------------------------------------------------------
176
177}; // namespace android
178