1 /*
2 * Copyright (C) 2011 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 <gui/IDisplayEventConnection.h>
18
19 #include <private/gui/BitTube.h>
20
21 namespace android {
22
23 namespace { // Anonymous
24
25 enum class Tag : uint32_t {
26 STEAL_RECEIVE_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
27 SET_VSYNC_RATE,
28 REQUEST_NEXT_VSYNC,
29 REQUEST_LATEST_CONFIG,
30 LAST = REQUEST_LATEST_CONFIG,
31 };
32
33 } // Anonymous namespace
34
35 class BpDisplayEventConnection : public SafeBpInterface<IDisplayEventConnection> {
36 public:
BpDisplayEventConnection(const sp<IBinder> & impl)37 explicit BpDisplayEventConnection(const sp<IBinder>& impl)
38 : SafeBpInterface<IDisplayEventConnection>(impl, "BpDisplayEventConnection") {}
39
40 ~BpDisplayEventConnection() override;
41
stealReceiveChannel(gui::BitTube * outChannel)42 status_t stealReceiveChannel(gui::BitTube* outChannel) override {
43 return callRemote<decltype(
44 &IDisplayEventConnection::stealReceiveChannel)>(Tag::STEAL_RECEIVE_CHANNEL,
45 outChannel);
46 }
47
setVsyncRate(uint32_t count)48 status_t setVsyncRate(uint32_t count) override {
49 return callRemote<decltype(&IDisplayEventConnection::setVsyncRate)>(Tag::SET_VSYNC_RATE,
50 count);
51 }
52
requestNextVsync()53 void requestNextVsync() override {
54 callRemoteAsync<decltype(&IDisplayEventConnection::requestNextVsync)>(
55 Tag::REQUEST_NEXT_VSYNC);
56 }
57
requestLatestConfig()58 void requestLatestConfig() override {
59 callRemoteAsync<decltype(&IDisplayEventConnection::requestLatestConfig)>(
60 Tag::REQUEST_LATEST_CONFIG);
61 }
62 };
63
64 // Out-of-line virtual method definition to trigger vtable emission in this translation unit (see
65 // clang warning -Wweak-vtables)
66 BpDisplayEventConnection::~BpDisplayEventConnection() = default;
67
68 IMPLEMENT_META_INTERFACE(DisplayEventConnection, "android.gui.DisplayEventConnection");
69
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)70 status_t BnDisplayEventConnection::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
71 uint32_t flags) {
72 if (code < IBinder::FIRST_CALL_TRANSACTION || code > static_cast<uint32_t>(Tag::LAST)) {
73 return BBinder::onTransact(code, data, reply, flags);
74 }
75 auto tag = static_cast<Tag>(code);
76 switch (tag) {
77 case Tag::STEAL_RECEIVE_CHANNEL:
78 return callLocal(data, reply, &IDisplayEventConnection::stealReceiveChannel);
79 case Tag::SET_VSYNC_RATE:
80 return callLocal(data, reply, &IDisplayEventConnection::setVsyncRate);
81 case Tag::REQUEST_NEXT_VSYNC:
82 return callLocalAsync(data, reply, &IDisplayEventConnection::requestNextVsync);
83 case Tag::REQUEST_LATEST_CONFIG:
84 return callLocalAsync(data, reply, &IDisplayEventConnection::requestLatestConfig);
85 }
86 }
87
88 } // namespace android
89