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