1 /* 2 * Copyright (C) 2017 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 #ifndef CHRE_PLATFORM_SLPI_HOST_LINK_BASE_H_ 18 #define CHRE_PLATFORM_SLPI_HOST_LINK_BASE_H_ 19 20 #include "timer.h" 21 22 namespace chre { 23 24 class HostLinkBase { 25 public: 26 /** 27 * Blocks the current thread until the host has retrieved all messages pending 28 * in the outbound queue, or a timeout occurs. For proper function, it should 29 * not be possible for new messages to be added to the queue at the point when 30 * this is called. 31 * 32 * @return true if the outbound queue was successfully emptied 33 */ 34 static bool flushOutboundQueue(); 35 36 /** 37 * Attempts to flush the outbound queue and gracefully inform the host that we 38 * are exiting. 39 */ 40 static void shutdown(); 41 42 private: 43 static constexpr time_timetick_type kPollingIntervalUsec = 5000; 44 }; 45 46 /** 47 * Requests that the HostLink send the log buffer to the host. 48 */ 49 void requestHostLinkLogBufferFlush(); 50 51 /** 52 * Sends a request to the host to enable the audio feature. 53 */ 54 void sendAudioRequest(); 55 56 /** 57 * Sends a request to the host to disable the audio feature. 58 */ 59 void sendAudioRelease(); 60 61 } // namespace chre 62 63 #endif // CHRE_PLATFORM_SLPI_HOST_LINK_BASE_H_ 64
