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      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 #ifndef ANDROID_RS_FIFO_SOCKET_H
     18 #define ANDROID_RS_FIFO_SOCKET_H
     19 
     20 
     21 #include "rsFifo.h"
     22 
     23 namespace android {
     24 namespace renderscript {
     25 
     26 
     27 class FifoSocket {
     28 public:
     29     FifoSocket();
     30     virtual ~FifoSocket();
     31 
     32     bool init(bool supportNonBlocking = true,
     33               bool supportReturnValues = true,
     34               size_t maxDataSize = 0);
     35     void shutdown();
     36 
     37     bool writeAsync(const void *data, size_t bytes, bool waitForSpace = true);
     38     void writeWaitReturn(void *ret, size_t retSize);
     39     size_t read(void *data, size_t bytes);
     40     void readReturn(const void *data, size_t bytes);
     41     bool isEmpty();
     42 
     43     int getWriteFd() {return sv[0];}
     44     int getReadFd() {return sv[1];}
     45 
     46 protected:
     47     int sv[2];
     48     bool mShutdown;
     49 };
     50 
     51 } // namespace renderscript
     52 } // namespace android
     53 
     54 #endif
     55