1 /* 2 * Copyright (C) 2006 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 UTILS_DEFINED 18 #define UTILS_DEFINED 19 20 #include "SkStream.h" 21 22 #include "android_util_Binder.h" 23 24 #include <jni.h> 25 #include <utils/Asset.h> 26 27 namespace android { 28 29 class AssetStreamAdaptor : public SkStream { 30 public: 31 AssetStreamAdaptor(Asset* a) : fAsset(a) {} 32 virtual bool rewind(); 33 virtual size_t read(void* buffer, size_t size); 34 35 private: 36 Asset* fAsset; 37 }; 38 39 40 /** Restore the file descriptor's offset in our destructor 41 */ 42 class AutoFDSeek { 43 public: 44 AutoFDSeek(int fd) : fFD(fd) { 45 fCurr = ::lseek(fd, 0, SEEK_CUR); 46 } 47 ~AutoFDSeek() { 48 if (fCurr >= 0) { 49 ::lseek(fFD, fCurr, SEEK_SET); 50 } 51 } 52 private: 53 int fFD; 54 off_t fCurr; 55 }; 56 57 jobject nullObjectReturn(const char msg[]); 58 59 }; // namespace android 60 61 #endif 62
