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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(IInterface::asBinder(modelMemory));
62        status_t status = remote()->transact(LOAD_SOUND_MODEL, data, &reply);
63        if (status != NO_ERROR) {
64            return status;
65        }
66        status = (status_t)reply.readInt32();
67        if (status == NO_ERROR) {
68            reply.read(handle, sizeof(sound_model_handle_t));
69        }
70        return status;
71    }
72
73    virtual status_t unloadSoundModel(sound_model_handle_t handle)
74    {
75        Parcel data, reply;
76        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
77        data.write(&handle, sizeof(sound_model_handle_t));
78        status_t status = remote()->transact(UNLOAD_SOUND_MODEL, data, &reply);
79        if (status == NO_ERROR) {
80            status = (status_t)reply.readInt32();
81        }
82        return status;
83    }
84
85    virtual status_t startRecognition(sound_model_handle_t handle,
86                                      const sp<IMemory>& dataMemory)
87    {
88        Parcel data, reply;
89        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
90        data.write(&handle, sizeof(sound_model_handle_t));
91        if (dataMemory == 0) {
92            data.writeInt32(0);
93        } else {
94            data.writeInt32(dataMemory->size());
95        }
96        data.writeStrongBinder(IInterface::asBinder(dataMemory));
97        status_t status = remote()->transact(START_RECOGNITION, data, &reply);
98        if (status == NO_ERROR) {
99            status = (status_t)reply.readInt32();
100        }
101        return status;
102    }
103
104    virtual status_t stopRecognition(sound_model_handle_t handle)
105    {
106        Parcel data, reply;
107        data.writeInterfaceToken(ISoundTrigger::getInterfaceDescriptor());
108        data.write(&handle, sizeof(sound_model_handle_t));
109        status_t status = remote()->transact(STOP_RECOGNITION, data, &reply);
110        if (status == NO_ERROR) {
111            status = (status_t)reply.readInt32();
112        }
113        return status;
114    }
115
116};
117
118IMPLEMENT_META_INTERFACE(SoundTrigger, "android.hardware.ISoundTrigger");
119
120// ----------------------------------------------------------------------
121
122status_t BnSoundTrigger::onTransact(
123    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
124{
125    switch(code) {
126        case DETACH: {
127            ALOGV("DETACH");
128            CHECK_INTERFACE(ISoundTrigger, data, reply);
129            detach();
130            return NO_ERROR;
131        } break;
132        case LOAD_SOUND_MODEL: {
133            CHECK_INTERFACE(ISoundTrigger, data, reply);
134            sp<IMemory> modelMemory = interface_cast<IMemory>(
135                data.readStrongBinder());
136            sound_model_handle_t handle;
137            status_t status = loadSoundModel(modelMemory, &handle);
138            reply->writeInt32(status);
139            if (status == NO_ERROR) {
140                reply->write(&handle, sizeof(sound_model_handle_t));
141            }
142            return NO_ERROR;
143        }
144        case UNLOAD_SOUND_MODEL: {
145            CHECK_INTERFACE(ISoundTrigger, data, reply);
146            sound_model_handle_t handle;
147            data.read(&handle, sizeof(sound_model_handle_t));
148            status_t status = unloadSoundModel(handle);
149            reply->writeInt32(status);
150            return NO_ERROR;
151        }
152        case START_RECOGNITION: {
153            CHECK_INTERFACE(ISoundTrigger, data, reply);
154            sound_model_handle_t handle;
155            data.read(&handle, sizeof(sound_model_handle_t));
156            sp<IMemory> dataMemory;
157            if (data.readInt32() != 0) {
158                dataMemory = interface_cast<IMemory>(data.readStrongBinder());
159            }
160            status_t status = startRecognition(handle, dataMemory);
161            reply->writeInt32(status);
162            return NO_ERROR;
163        }
164        case STOP_RECOGNITION: {
165            CHECK_INTERFACE(ISoundTrigger, data, reply);
166            sound_model_handle_t handle;
167            data.read(&handle, sizeof(sound_model_handle_t));
168            status_t status = stopRecognition(handle);
169            reply->writeInt32(status);
170            return NO_ERROR;
171        }
172        default:
173            return BBinder::onTransact(code, data, reply, flags);
174    }
175}
176
177// ----------------------------------------------------------------------------
178
179}; // namespace android
180