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_TIFF_WRITABLE 18 #define IMG_UTILS_TIFF_WRITABLE 19 20 #include <img_utils/Orderable.h> 21 #include <img_utils/EndianUtils.h> 22 #include <img_utils/Output.h> 23 24 #include <cutils/compiler.h> 25 #include <utils/Errors.h> 26 #include <utils/RefBase.h> 27 #include <stdint.h> 28 29 namespace android { 30 namespace img_utils { 31 32 /** 33 * TiffWritable subclasses represent TIFF metadata objects that can be written 34 * to an EndianOutput object. This is used for TIFF entries and IFDs. 35 */ 36 class ANDROID_API TiffWritable : public Orderable, public LightRefBase<TiffWritable> { 37 public: 38 TiffWritable(); 39 virtual ~TiffWritable(); 40 41 /** 42 * Write the data to the output. The given offset is used to calculate 43 * the header offset for values written. The offset is defined 44 * relative to the beginning of the TIFF header, and is word aligned. 45 * 46 * Returns OK on success, or a negative error code on failure. 47 */ 48 virtual status_t writeData(uint32_t offset, /*out*/EndianOutput* out) const = 0; 49 50 /** 51 * Get the size of the data to write. 52 */ 53 virtual size_t getSize() const = 0; 54 55 }; 56 57 } /*namespace img_utils*/ 58 } /*namespace android*/ 59 60 #endif /*IMG_UTILS_TIFF_WRITABLE*/ 61