IAudioRecord.cpp revision 77d837ae86c791c46ce019b58e09ac62780bf973
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(pid_t tid, int event, int triggerSession) 46 { 47 Parcel data, reply; 48 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor()); 49 data.writeInt32(tid); 50 data.writeInt32(event); 51 data.writeInt32(triggerSession); 52 status_t status = remote()->transact(START, data, &reply); 53 if (status == NO_ERROR) { 54 status = reply.readInt32(); 55 } else { 56 ALOGW("start() error: %s", strerror(-status)); 57 } 58 return status; 59 } 60 61 virtual void stop() 62 { 63 Parcel data, reply; 64 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor()); 65 remote()->transact(STOP, data, &reply); 66 } 67 68 virtual sp<IMemory> getCblk() const 69 { 70 Parcel data, reply; 71 sp<IMemory> cblk; 72 data.writeInterfaceToken(IAudioRecord::getInterfaceDescriptor()); 73 status_t status = remote()->transact(GET_CBLK, data, &reply); 74 if (status == NO_ERROR) { 75 cblk = interface_cast<IMemory>(reply.readStrongBinder()); 76 } 77 return cblk; 78 } 79}; 80 81IMPLEMENT_META_INTERFACE(AudioRecord, "android.media.IAudioRecord"); 82 83// ---------------------------------------------------------------------- 84 85status_t BnAudioRecord::onTransact( 86 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 87{ 88 switch (code) { 89 case GET_CBLK: { 90 CHECK_INTERFACE(IAudioRecord, data, reply); 91 reply->writeStrongBinder(getCblk()->asBinder()); 92 return NO_ERROR; 93 } break; 94 case START: { 95 CHECK_INTERFACE(IAudioRecord, data, reply); 96 pid_t tid = (pid_t) data.readInt32(); 97 int event = data.readInt32(); 98 int triggerSession = data.readInt32(); 99 reply->writeInt32(start(tid, event, triggerSession)); 100 return NO_ERROR; 101 } break; 102 case STOP: { 103 CHECK_INTERFACE(IAudioRecord, data, reply); 104 stop(); 105 return NO_ERROR; 106 } break; 107 default: 108 return BBinder::onTransact(code, data, reply, flags); 109 } 110} 111 112}; // namespace android 113