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 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 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 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 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
