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: 42 BpDisplayEventConnection(const sp<IBinder>& impl) 43 : BpInterface<IDisplayEventConnection>(impl) 44 { 45 } 46 47 virtual ~BpDisplayEventConnection(); 48 49 virtual sp<BitTube> getDataChannel() const 50 { 51 Parcel data, reply; 52 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor()); 53 remote()->transact(GET_DATA_CHANNEL, data, &reply); 54 return new BitTube(reply); 55 } 56 57 virtual void setVsyncRate(uint32_t count) { 58 Parcel data, reply; 59 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor()); 60 data.writeUint32(count); 61 remote()->transact(SET_VSYNC_RATE, data, &reply); 62 } 63 64 virtual void requestNextVsync() { 65 Parcel data, reply; 66 data.writeInterfaceToken(IDisplayEventConnection::getInterfaceDescriptor()); 67 remote()->transact(REQUEST_NEXT_VSYNC, data, &reply, IBinder::FLAG_ONEWAY); 68 } 69 }; 70 71 // Out-of-line virtual method definition to trigger vtable emission in this 72 // translation unit (see clang warning -Wweak-vtables) 73 BpDisplayEventConnection::~BpDisplayEventConnection() {} 74 75 IMPLEMENT_META_INTERFACE(DisplayEventConnection, "android.gui.DisplayEventConnection"); 76 77 // ---------------------------------------------------------------------------- 78 79 status_t BnDisplayEventConnection::onTransact( 80 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 81 { 82 switch(code) { 83 case GET_DATA_CHANNEL: { 84 CHECK_INTERFACE(IDisplayEventConnection, data, reply); 85 sp<BitTube> channel(getDataChannel()); 86 channel->writeToParcel(reply); 87 return NO_ERROR; 88 } 89 case SET_VSYNC_RATE: { 90 CHECK_INTERFACE(IDisplayEventConnection, data, reply); 91 setVsyncRate(data.readUint32()); 92 return NO_ERROR; 93 } 94 case REQUEST_NEXT_VSYNC: { 95 CHECK_INTERFACE(IDisplayEventConnection, data, reply); 96 requestNextVsync(); 97 return NO_ERROR; 98 } 99 } 100 return BBinder::onTransact(code, data, reply, flags); 101 } 102 103 // ---------------------------------------------------------------------------- 104 }; // namespace android 105
