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      1 /*
      2 **
      3 ** Copyright 2007, 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 "IAudioRecord"
     19 //#define LOG_NDEBUG 0
     20 #include <utils/Log.h>
     21 
     22 #include <stdint.h>
     23 #include <sys/types.h>
     24 
     25 #include <binder/Parcel.h>
     26 
     27 #include <media/IAudioRecord.h>
     28 
     29 namespace android {
     30 
     31 enum {
     32     UNUSED_WAS_GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
     33     START,
     34     STOP
     35 };
     36 
     37 class BpAudioRecord : public BpInterface<IAudioRecord>
     38 {
     39 public:
     40     BpAudioRecord(const sp<IBinder>& impl)
     41         : BpInterface<IAudioRecord>(impl)
     42     {
     43     }
     44 
     45     virtual status_t start(int /*AudioSystem::sync_event_t*/ event, audio_session_t triggerSession)
     46     {
     47         Parcel data, reply;
     48         data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
     49         data.writeInt32(event);
     50         data.writeInt32(triggerSession);
     51         status_t status = remote()->transact(START, data, &reply);
     52         if (status == NO_ERROR) {
     53             status = reply.readInt32();
     54         } else {
     55             ALOGW("start() error: %s", strerror(-status));
     56         }
     57         return status;
     58     }
     59 
     60     virtual void stop()
     61     {
     62         Parcel data, reply;
     63         data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor());
     64         remote()->transact(STOP, data, &reply);
     65     }
     66 
     67 };
     68 
     69 IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord");
     70 
     71 // ----------------------------------------------------------------------
     72 
     73 status_t BnAudioRecord::onTransact(
     74     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     75 {
     76     switch (code) {
     77         case START: {
     78             CHECK_INTERFACE(IAudioRecord, data, reply);
     79             int /*AudioSystem::sync_event_t*/ event = data.readInt32();
     80             audio_session_t triggerSession = (audio_session_t) data.readInt32();
     81             reply->writeInt32(start(event, triggerSession));
     82             return NO_ERROR;
     83         } break;
     84         case STOP: {
     85             CHECK_INTERFACE(IAudioRecord, data, reply);
     86             stop();
     87             return NO_ERROR;
     88         } break;
     89         default:
     90             return BBinder::onTransact(code, data, reply, flags);
     91     }
     92 }
     93 
     94 } // namespace android
     95