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:
BpProducerListener(const sp<IBinder> & impl)31 explicit BpProducerListener(const sp<IBinder>& impl)
32 : BpInterface<IProducerListener>(impl) {}
33
34 virtual ~BpProducerListener();
35
onBufferReleased()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
needsReleaseNotify()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)
~BpProducerListener()62 BpProducerListener::~BpProducerListener() {}
63
64 IMPLEMENT_META_INTERFACE(ProducerListener, "android.gui.IProducerListener")
65
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)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
needsReleaseNotify()85 bool BnProducerListener::needsReleaseNotify() {
86 return true;
87 }
88
89 } // namespace android
90