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 <stdint.h>
18 #include <sys/types.h>
19
20 #include <utils/Errors.h>
21 #include <utils/RefBase.h>
22 #include <utils/Timers.h>
23
24 #include <binder/Parcel.h>
25 #include <binder/IInterface.h>
26
27 #include <gui/IDisplayEventConnection.h>
28 #include <gui/BitTube.h>
29
30 namespace android {
31 // ----------------------------------------------------------------------------
32
33 enum {
34 GET_DATA_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
35 SET_VSYNC_RATE,
36 REQUEST_NEXT_VSYNC
37 };
38
39 class BpDisplayEventConnection : public BpInterface<IDisplayEventConnection>
40 {
41 public:
BpDisplayEventConnection(const sp<IBinder> & impl)42 BpDisplayEventConnection(const sp<IBinder>& impl)
43 : BpInterface<IDisplayEventConnection>(impl)
44 {
45 }
46
getDataChannel() const47 virtual sp<BitTube> getDataChannel() const
48 {
49 Parcel data, reply;
50 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor());
51 remote()->transact(GET_DATA_CHANNEL, data, &reply);
52 return new BitTube(reply);
53 }
54
setVsyncRate(uint32_t count)55 virtual void setVsyncRate(uint32_t count) {
56 Parcel data, reply;
57 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor());
58 data.writeInt32(count);
59 remote()->transact(SET_VSYNC_RATE, data, &reply);
60 }
61
requestNextVsync()62 virtual void requestNextVsync() {
63 Parcel data, reply;
64 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor());
65 remote()->transact(REQUEST_NEXT_VSYNC, data, &reply, IBinder::FLAG_ONEWAY);
66 }
67 };
68
69 IMPLEMENT_META_INTERFACE(DisplayEventConnection, "android.gui.DisplayEventConnection");
70
71 // ----------------------------------------------------------------------------
72
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)73 status_t BnDisplayEventConnection::onTransact(
74 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
75 {
76 switch(code) {
77 case GET_DATA_CHANNEL: {
78 CHECK_INTERFACE(IDisplayEventConnection, data, reply);
79 sp<BitTube> channel(getDataChannel());
80 channel->writeToParcel(reply);
81 return NO_ERROR;
82 } break;
83 case SET_VSYNC_RATE: {
84 CHECK_INTERFACE(IDisplayEventConnection, data, reply);
85 setVsyncRate(data.readInt32());
86 return NO_ERROR;
87 } break;
88 case REQUEST_NEXT_VSYNC: {
89 CHECK_INTERFACE(IDisplayEventConnection, data, reply);
90 requestNextVsync();
91 return NO_ERROR;
92 } break;
93 }
94 return BBinder::onTransact(code, data, reply, flags);
95 }
96
97 // ----------------------------------------------------------------------------
98 }; // namespace android
99