soundtrigger/ISoundTrigger.cpp

   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
  27 namespace android {
  28
  29 enum {
  30     DETACH = IBinder::FIRST_CALL_TRANSACTION,
  31     LOAD_SOUND_MODEL,
  32     UNLOAD_SOUND_MODEL,
  33     START_RECOGNITION,
  34     STOP_RECOGNITION,
  35 };
  36
  37 class BpSoundTrigger: public BpInterface<ISoundTrigger>
  38 {
  39 public:
  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
 116 IMPLEMENT_META_INTERFACE(SoundTrigger, "android.hardware.ISoundTrigger");
 117
 118 // ----------------------------------------------------------------------
 119
 120 status_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