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
21namespace android {
22
23namespace { // Anonymous
24
25enum 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
34class BpDisplayEventConnection : public SafeBpInterface<IDisplayEventConnection> {
35public:
36    explicit BpDisplayEventConnection(const sp<IBinder>& impl)
37          : SafeBpInterface<IDisplayEventConnection>(impl, "BpDisplayEventConnection") {}
38
39    ~BpDisplayEventConnection() override;
40
41    status_t stealReceiveChannel(gui::BitTube* outChannel) override {
42        return callRemote<decltype(
43                &IDisplayEventConnection::stealReceiveChannel)>(Tag::STEAL_RECEIVE_CHANNEL,
44                                                                outChannel);
45    }
46
47    status_t setVsyncRate(uint32_t count) override {
48        return callRemote<decltype(&IDisplayEventConnection::setVsyncRate)>(Tag::SET_VSYNC_RATE,
49                                                                            count);
50    }
51
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)
60BpDisplayEventConnection::~BpDisplayEventConnection() = default;
61
62IMPLEMENT_META_INTERFACE(DisplayEventConnection, "android.gui.DisplayEventConnection");
63
64status_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