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