1 /* 2 * Copyright 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <binder/Parcel.h> 18 19 #include <gui/IProducerListener.h> 20 21 namespace android { 22 23 enum { 24 ON_BUFFER_RELEASED = IBinder::FIRST_CALL_TRANSACTION, 25 NEEDS_RELEASE_NOTIFY, 26 }; 27 28 class BpProducerListener : public BpInterface<IProducerListener> 29 { 30 public: 31 explicit BpProducerListener(const sp<IBinder>& impl) 32 : BpInterface<IProducerListener>(impl) {} 33 34 virtual ~BpProducerListener(); 35 36 virtual void onBufferReleased() { 37 Parcel data, reply; 38 data.writeInterfaceToken(IProducerListener::getInterfaceDescriptor()); 39 remote()->transact(ON_BUFFER_RELEASED, data, &reply, IBinder::FLAG_ONEWAY); 40 } 41 42 virtual bool needsReleaseNotify() { 43 bool result; 44 Parcel data, reply; 45 data.writeInterfaceToken(IProducerListener::getInterfaceDescriptor()); 46 status_t err = remote()->transact(NEEDS_RELEASE_NOTIFY, data, &reply); 47 if (err != NO_ERROR) { 48 ALOGE("IProducerListener: binder call \'needsReleaseNotify\' failed"); 49 return true; 50 } 51 err = reply.readBool(&result); 52 if (err != NO_ERROR) { 53 ALOGE("IProducerListener: malformed binder reply"); 54 return true; 55 } 56 return result; 57 } 58 }; 59 60 // Out-of-line virtual method definition to trigger vtable emission in this 61 // translation unit (see clang warning -Wweak-vtables) 62 BpProducerListener::~BpProducerListener() {} 63 64 IMPLEMENT_META_INTERFACE(ProducerListener, "android.gui.IProducerListener") 65 66 status_t BnProducerListener::onTransact(uint32_t code, const Parcel& data, 67 Parcel* reply, uint32_t flags) { 68 switch (code) { 69 case ON_BUFFER_RELEASED: 70 CHECK_INTERFACE(IProducerListener, data, reply); 71 onBufferReleased(); 72 return NO_ERROR; 73 case NEEDS_RELEASE_NOTIFY: 74 CHECK_INTERFACE(IProducerListener, data, reply); 75 reply->writeBool(needsReleaseNotify()); 76 return NO_ERROR; 77 } 78 return BBinder::onTransact(code, data, reply, flags); 79 } 80 81 ProducerListener::~ProducerListener() = default; 82 83 DummyProducerListener::~DummyProducerListener() = default; 84 85 bool BnProducerListener::needsReleaseNotify() { 86 return true; 87 } 88 89 } // namespace android 90
