IAudioRecord.cpp revision 3acbd053c842e76e1a40fc8a0bf62de87eebf00f
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 29namespace android { 30 31enum { 32 GET_CBLK = IBinder::FIRST_CALL_TRANSACTION, 33 START, 34 STOP 35}; 36 37class BpAudioRecord : public BpInterface<IAudioRecord> 38{ 39public: 40 BpAudioRecord(const sp<IBinder>& impl) 41 : BpInterface<IAudioRecord>(impl) 42 { 43 } 44 45 virtual status_t start(int event, int 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 virtual sp<IMemory> getCblk() const 68 { 69 Parcel data, reply; 70 sp<IMemory> cblk; 71 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor()); 72 status_t status = remote()->transact(GET_CBLK, data, &reply); 73 if (status == NO_ERROR) { 74 cblk = interface_cast<IMemory>(reply.readStrongBinder()); 75 } 76 return cblk; 77 } 78}; 79 80IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord"); 81 82// ---------------------------------------------------------------------- 83 84status_t BnAudioRecord::onTransact( 85 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 86{ 87 switch (code) { 88 case GET_CBLK: { 89 CHECK_INTERFACE(IAudioRecord, data, reply); 90 reply->writeStrongBinder(getCblk()->asBinder()); 91 return NO_ERROR; 92 } break; 93 case START: { 94 CHECK_INTERFACE(IAudioRecord, data, reply); 95 int event = data.readInt32(); 96 int triggerSession = data.readInt32(); 97 reply->writeInt32(start(event, triggerSession)); 98 return NO_ERROR; 99 } break; 100 case STOP: { 101 CHECK_INTERFACE(IAudioRecord, data, reply); 102 stop(); 103 return NO_ERROR; 104 } break; 105 default: 106 return BBinder::onTransact(code, data, reply, flags); 107 } 108} 109 110}; // namespace android 111