1 /* 2 * Copyright (C) 2016 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 PDF_UTILS_H_ 18 #define PDF_UTILS_H_ 19 20 #include "jni.h" 21 22 namespace android { 23 24 int getBlock(void* param, unsigned long position, unsigned char* outBuffer, 25 unsigned long size); 26 27 bool forwardPdfiumError(JNIEnv* env); 28 29 #define HANDLE_PDFIUM_ERROR_STATE(env) \ 30 { \ 31 bool isExceptionPending = forwardPdfiumError(env); \ 32 if (isExceptionPending) { \ 33 return; \ 34 } \ 35 } 36 37 #define HANDLE_PDFIUM_ERROR_STATE_WITH_RET_CODE(env, retCode) \ 38 { \ 39 bool isExceptionPending = forwardPdfiumError(env); \ 40 if (isExceptionPending) { \ 41 return retCode; \ 42 } \ 43 } 44 45 jlong nativeOpen(JNIEnv* env, jclass thiz, jint fd, jlong size); 46 void nativeClose(JNIEnv* env, jclass thiz, jlong documentPtr); 47 48 jint nativeGetPageCount(JNIEnv* env, jclass thiz, jlong documentPtr); 49 jboolean nativeScaleForPrinting(JNIEnv* env, jclass thiz, jlong documentPtr); 50 51 }; 52 53 #endif /* PDF_UTILS_H_ */ 54