1 /* 2 * Copyright 2014 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 IMG_UTILS_BYTE_ARRAY_OUTPUT_H 18 #define IMG_UTILS_BYTE_ARRAY_OUTPUT_H 19 20 #include <img_utils/Output.h> 21 22 #include <utils/Errors.h> 23 #include <utils/Vector.h> 24 25 #include <cutils/compiler.h> 26 #include <stdint.h> 27 28 namespace android { 29 namespace img_utils { 30 31 /** 32 * Utility class that accumulates written bytes into a buffer. 33 */ 34 class ANDROID_API ByteArrayOutput : public Output { 35 public: 36 37 ByteArrayOutput(); 38 39 virtual ~ByteArrayOutput(); 40 41 /** 42 * Open this ByteArrayOutput. 43 * 44 * Returns OK on success, or a negative error code. 45 */ 46 virtual status_t open(); 47 48 /** 49 * Write bytes from the given buffer. The number of bytes given in the count 50 * argument will be written. Bytes will be written from the given buffer starting 51 * at the index given in the offset argument. 52 * 53 * Returns OK on success, or a negative error code. 54 */ 55 virtual status_t write(const uint8_t* buf, size_t offset, size_t count); 56 57 /** 58 * Close this ByteArrayOutput. 59 * 60 * Returns OK on success, or a negative error code. 61 */ 62 virtual status_t close(); 63 64 /** 65 * Get current size of the array of bytes written. 66 */ 67 virtual size_t getSize() const; 68 69 /** 70 * Get pointer to array of bytes written. It is not valid to use this pointer if 71 * open, write, or close is called after this method. 72 */ 73 virtual const uint8_t* getArray() const; 74 75 protected: 76 Vector<uint8_t> mByteArray; 77 }; 78 79 } /*namespace img_utils*/ 80 } /*namespace android*/ 81 82 #endif /*IMG_UTILS_BYTE_ARRAY_OUTPUT_H*/ 83