1e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk/* 2e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * Copyright 2014 The Android Open Source Project 3e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * 4e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * Licensed under the Apache License, Version 2.0 (the "License"); 5e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * you may not use this file except in compliance with the License. 6e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * You may obtain a copy of the License at 7e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * 8e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * http://www.apache.org/licenses/LICENSE-2.0 9e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * 10e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * Unless required by applicable law or agreed to in writing, software 11e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * distributed under the License is distributed on an "AS IS" BASIS, 12e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * See the License for the specific language governing permissions and 14e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk * limitations under the License. 15e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk */ 16e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 174510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk#define LOG_TAG "TiffIfd" 184510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 194510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk#include <img_utils/TagDefinitions.h> 20e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk#include <img_utils/TiffHelpers.h> 214510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk#include <img_utils/TiffIfd.h> 224510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk#include <img_utils/TiffWriter.h> 23e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 24e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk#include <utils/Log.h> 25e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 26e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunknamespace android { 27e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunknamespace img_utils { 28e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 29e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben BrunkTiffIfd::TiffIfd(uint32_t ifdId) 304510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk : mNextIfd(), mIfdId(ifdId), mStripOffsetsInitialized(false) {} 31e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 32e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben BrunkTiffIfd::~TiffIfd() {} 33e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 34e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkstatus_t TiffIfd::addEntry(const sp<TiffEntry>& entry) { 35e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t size = mEntries.size(); 36e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (size >= MAX_IFD_ENTRIES) { 37272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: Failed to add entry for tag 0x%x to IFD %u, too many entries in IFD!", 38e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk __FUNCTION__, entry->getTag(), mIfdId); 39e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_INDEX; 40e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 41e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 42e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (mEntries.add(entry) < 0) { 43272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: Failed to add entry for tag 0x%x to ifd %u.", __FUNCTION__, entry->getTag(), 44e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk mIfdId); 45e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_INDEX; 46e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 47e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return OK; 48e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 49e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 50e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunksp<TiffEntry> TiffIfd::getEntry(uint16_t tag) const { 51e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk ssize_t index = mEntries.indexOfTag(tag); 52e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (index < 0) { 53272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: No entry for tag 0x%x in ifd %u.", __FUNCTION__, tag, mIfdId); 54e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return NULL; 55e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 56e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return mEntries[index]; 57e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 58e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 594510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunkvoid TiffIfd::removeEntry(uint16_t tag) { 604510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ssize_t index = mEntries.indexOfTag(tag); 614510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (index >= 0) { 624510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk mEntries.removeAt(index); 634510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 644510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk} 654510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 664510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 67e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkvoid TiffIfd::setNextIfd(const sp<TiffIfd>& ifd) { 68e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk mNextIfd = ifd; 69e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 70e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 71e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunksp<TiffIfd> TiffIfd::getNextIfd() const { 72e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return mNextIfd; 73e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 74e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 75e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkuint32_t TiffIfd::checkAndGetOffset(uint32_t offset) const { 76e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t size = mEntries.size(); 77e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 78e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (size > MAX_IFD_ENTRIES) { 79272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: Could not calculate IFD offsets, IFD %u contains too many entries.", 80e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk __FUNCTION__, mIfdId); 81e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_OFFSET; 82e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 83e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 84e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (size <= 0) { 85272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: Could not calculate IFD offsets, IFD %u contains no entries.", __FUNCTION__, 86e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk mIfdId); 87e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_OFFSET; 88e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 89e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 90e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (offset == BAD_OFFSET) { 91272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("%s: Could not calculate IFD offsets, IFD %u had a bad initial offset.", 92e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk __FUNCTION__, mIfdId); 93e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_OFFSET; 94e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 95e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 96e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk uint32_t ifdSize = calculateIfdSize(size); 97e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk WORD_ALIGN(ifdSize); 98e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return offset + ifdSize; 99e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 100e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 101e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkstatus_t TiffIfd::writeData(uint32_t offset, /*out*/EndianOutput* out) const { 102e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk assert((offset % TIFF_WORD_SIZE) == 0); 103e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk status_t ret = OK; 104e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 105e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk ALOGV("%s: IFD %u written to offset %u", __FUNCTION__, mIfdId, offset ); 106e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk uint32_t valueOffset = checkAndGetOffset(offset); 107e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (valueOffset == 0) { 108e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return BAD_VALUE; 109e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 110e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 111e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t size = mEntries.size(); 112e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 113e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Writer IFD header (2 bytes, number of entries). 114e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk uint16_t header = static_cast<uint16_t>(size); 115e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk BAIL_ON_FAIL(out->write(&header, 0, 1), ret); 116e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 117e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Write tag entries 118e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk for (size_t i = 0; i < size; ++i) { 119e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk BAIL_ON_FAIL(mEntries[i]->writeTagInfo(valueOffset, out), ret); 120e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk valueOffset += mEntries[i]->getSize(); 121e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 122e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 123e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Writer IFD footer (4 bytes, offset to next IFD). 124e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk uint32_t footer = (mNextIfd != NULL) ? offset + getSize() : 0; 125e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk BAIL_ON_FAIL(out->write(&footer, 0, 1), ret); 126e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 127e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk assert(out->getCurrentOffset() == offset + calculateIfdSize(size)); 128e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 129e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Write zeroes till word aligned 130e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk ZERO_TILL_WORD(out, calculateIfdSize(size), ret); 131e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 132e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Write values for each tag entry 133e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk for (size_t i = 0; i < size; ++i) { 134e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t last = out->getCurrentOffset(); 135e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk // Only write values that are too large to fit in the 12-byte TIFF entry 136e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (mEntries[i]->getSize() > OFFSET_SIZE) { 137e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk BAIL_ON_FAIL(mEntries[i]->writeData(out->getCurrentOffset(), out), ret); 138e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 139e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t next = out->getCurrentOffset(); 140e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t diff = (next - last); 141e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t actual = mEntries[i]->getSize(); 142e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk if (diff != actual) { 143272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGW("Sizes do not match for tag %x. Expected %zu, received %zu", 144e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk mEntries[i]->getTag(), actual, diff); 145e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 146e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 147e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 148e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk assert(out->getCurrentOffset() == offset + getSize()); 149e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 150e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return ret; 151e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 152e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 153272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunksize_t TiffIfd::getSize() const { 154e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t size = mEntries.size(); 155e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk uint32_t total = calculateIfdSize(size); 156e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk WORD_ALIGN(total); 157e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk for (size_t i = 0; i < size; ++i) { 158e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk total += mEntries[i]->getSize(); 159e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 160e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return total; 161e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 162e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 163e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkuint32_t TiffIfd::getId() const { 164e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return mIfdId; 165e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 166e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 167e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkuint32_t TiffIfd::getComparableValue() const { 168e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return mIfdId; 169e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 170e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 1714510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunkstatus_t TiffIfd::validateAndSetStripTags() { 1724510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> widthEntry = getEntry(TAG_IMAGEWIDTH); 1734510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (widthEntry == NULL) { 1744510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u doesn't have a ImageWidth tag set", __FUNCTION__, mIfdId); 1754510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 1764510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 1774510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 1784510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> heightEntry = getEntry(TAG_IMAGELENGTH); 1794510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (heightEntry == NULL) { 1804510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u doesn't have a ImageLength tag set", __FUNCTION__, mIfdId); 1814510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 1824510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 1834510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 1844510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> samplesEntry = getEntry(TAG_SAMPLESPERPIXEL); 1854510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (samplesEntry == NULL) { 1864510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u doesn't have a SamplesPerPixel tag set", __FUNCTION__, mIfdId); 1874510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 1884510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 1894510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 1904510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> bitsEntry = getEntry(TAG_BITSPERSAMPLE); 1914510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (bitsEntry == NULL) { 1924510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u doesn't have a BitsPerSample tag set", __FUNCTION__, mIfdId); 1934510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 1944510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 1954510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 1964510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t width = *(widthEntry->getData<uint32_t>()); 1974510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t height = *(heightEntry->getData<uint32_t>()); 1984510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint16_t bitsPerSample = *(bitsEntry->getData<uint16_t>()); 1994510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint16_t samplesPerPixel = *(samplesEntry->getData<uint16_t>()); 2004510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2014510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if ((bitsPerSample % 8) != 0) { 2024510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: BitsPerSample %d in IFD %u is not byte-aligned.", __FUNCTION__, 2034510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk bitsPerSample, mIfdId); 2044510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2054510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2064510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2074510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t bytesPerSample = bitsPerSample / 8; 2084510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2094510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Choose strip size as close to 8kb as possible without splitting rows. 2104510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // If the row length is >8kb, each strip will only contain a single row. 2114510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t rowLengthBytes = bytesPerSample * samplesPerPixel * width; 2124510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t idealChunkSize = (1 << 13); // 8kb 2134510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t rowsPerChunk = idealChunkSize / rowLengthBytes; 2144510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk rowsPerChunk = (rowsPerChunk == 0) ? 1 : rowsPerChunk; 2154510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t actualChunkSize = rowLengthBytes * rowsPerChunk; 2164510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2174510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t lastChunkRows = height % rowsPerChunk; 2184510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t lastChunkSize = lastChunkRows * rowLengthBytes; 2194510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2204510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (actualChunkSize > /*max strip size for TIFF/EP*/65536) { 2214510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Strip length too long.", __FUNCTION__); 2224510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2234510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2244510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2254510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk size_t numStrips = height / rowsPerChunk; 2264510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2274510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Add another strip for the incomplete chunk. 2284510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (lastChunkRows > 0) { 2294510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk numStrips += 1; 2304510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2314510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2324510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Put each row in it's own strip 2334510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t rowsPerStripVal = rowsPerChunk; 2344510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> rowsPerStrip = TiffWriter::uncheckedBuildEntry(TAG_ROWSPERSTRIP, LONG, 1, 2354510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk UNDEFINED_ENDIAN, &rowsPerStripVal); 2364510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2374510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (rowsPerStrip == NULL) { 2384510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not build entry for RowsPerStrip tag.", __FUNCTION__); 2394510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2404510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2414510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2424510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk Vector<uint32_t> byteCounts; 2434510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2444510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk for (size_t i = 0; i < numStrips; ++i) { 2454510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (lastChunkRows > 0 && i == (numStrips - 1)) { 2464510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk byteCounts.add(lastChunkSize); 2474510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } else { 2484510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk byteCounts.add(actualChunkSize); 2494510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2504510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2514510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2524510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Set byte counts for each strip 2534510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> stripByteCounts = TiffWriter::uncheckedBuildEntry(TAG_STRIPBYTECOUNTS, LONG, 2544510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk static_cast<uint32_t>(numStrips), UNDEFINED_ENDIAN, byteCounts.array()); 2554510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2564510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (stripByteCounts == NULL) { 2574510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not build entry for StripByteCounts tag.", __FUNCTION__); 2584510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2594510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2604510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2614510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk Vector<uint32_t> stripOffsetsVector; 2624510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk stripOffsetsVector.resize(numStrips); 2634510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2644510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Set uninitialized offsets 2654510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> stripOffsets = TiffWriter::uncheckedBuildEntry(TAG_STRIPOFFSETS, LONG, 2664510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk static_cast<uint32_t>(numStrips), UNDEFINED_ENDIAN, stripOffsetsVector.array()); 2674510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2684510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (stripOffsets == NULL) { 2694510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not build entry for StripOffsets tag.", __FUNCTION__); 2704510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2714510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2724510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2734510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if(addEntry(stripByteCounts) != OK) { 2744510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not add entry for StripByteCounts to IFD %u", __FUNCTION__, mIfdId); 2754510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2764510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2774510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2784510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if(addEntry(rowsPerStrip) != OK) { 2794510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not add entry for StripByteCounts to IFD %u", __FUNCTION__, mIfdId); 2804510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2814510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2824510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2834510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if(addEntry(stripOffsets) != OK) { 2844510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Could not add entry for StripByteCounts to IFD %u", __FUNCTION__, mIfdId); 2854510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 2864510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 2874510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2884510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk mStripOffsetsInitialized = true; 2894510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return OK; 2904510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk} 2914510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2924510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunkbool TiffIfd::uninitializedOffsets() const { 2934510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return mStripOffsetsInitialized; 2944510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk} 2954510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2964510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunkstatus_t TiffIfd::setStripOffset(uint32_t offset) { 2974510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 2984510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Get old offsets and bytecounts 2994510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> oldOffsets = getEntry(TAG_STRIPOFFSETS); 3004510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (oldOffsets == NULL) { 3014510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u does not contain StripOffsets entry.", __FUNCTION__, mIfdId); 3024510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3034510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3044510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3054510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> stripByteCounts = getEntry(TAG_STRIPBYTECOUNTS); 3064510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (stripByteCounts == NULL) { 3074510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u does not contain StripByteCounts entry.", __FUNCTION__, mIfdId); 3084510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3094510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3104510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3114510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t offsetsCount = oldOffsets->getCount(); 3124510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t byteCount = stripByteCounts->getCount(); 3134510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (offsetsCount != byteCount) { 3144510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: StripOffsets count (%u) doesn't match StripByteCounts count (%u) in IFD %u", 3154510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk __FUNCTION__, offsetsCount, byteCount, mIfdId); 3164510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3174510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3184510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3194510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t* stripByteCountsArray = stripByteCounts->getData<uint32_t>(); 3204510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3214510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk size_t numStrips = offsetsCount; 3224510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3234510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk Vector<uint32_t> stripOffsets; 3244510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3254510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk // Calculate updated byte offsets 3264510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk for (size_t i = 0; i < numStrips; ++i) { 3274510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk stripOffsets.add(offset); 3284510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk offset += stripByteCountsArray[i]; 3294510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3304510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3314510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> newOffsets = TiffWriter::uncheckedBuildEntry(TAG_STRIPOFFSETS, LONG, 3324510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk static_cast<uint32_t>(numStrips), UNDEFINED_ENDIAN, stripOffsets.array()); 3334510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3344510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (newOffsets == NULL) { 3354510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Coult not build updated offsets entry in IFD %u", __FUNCTION__, mIfdId); 3364510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3374510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3384510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3394510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (addEntry(newOffsets) != OK) { 3404510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: Failed to add updated offsets entry in IFD %u", __FUNCTION__, mIfdId); 3414510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3424510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3434510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return OK; 3444510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk} 3454510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3464510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunkuint32_t TiffIfd::getStripSize() const { 3474510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk sp<TiffEntry> stripByteCounts = getEntry(TAG_STRIPBYTECOUNTS); 3484510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk if (stripByteCounts == NULL) { 3494510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk ALOGE("%s: IFD %u does not contain StripByteCounts entry.", __FUNCTION__, mIfdId); 3504510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return BAD_VALUE; 3514510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3524510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3534510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t count = stripByteCounts->getCount(); 3544510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk const uint32_t* byteCounts = stripByteCounts->getData<uint32_t>(); 3554510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 3564510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk uint32_t total = 0; 3574510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk for (size_t i = 0; i < static_cast<size_t>(count); ++i) { 3584510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk total += byteCounts[i]; 3594510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk } 3604510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk return total; 3614510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk} 3624510de26e5361f3a9f07057ec6f26483c888c1faRuben Brunk 363e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben BrunkString8 TiffIfd::toString() const { 364e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t s = mEntries.size(); 365e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk String8 output; 366272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk output.appendFormat("[ifd: %x, num_entries: %zu, entries:\n", getId(), s); 367e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk for(size_t i = 0; i < mEntries.size(); ++i) { 368e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk output.append("\t"); 369e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk output.append(mEntries[i]->toString()); 370e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk output.append("\n"); 371e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 372e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk output.append(", next_ifd: %x]", ((mNextIfd != NULL) ? mNextIfd->getId() : 0)); 373e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk return output; 374e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 375e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 376e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunkvoid TiffIfd::log() const { 377e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk size_t s = mEntries.size(); 378272b7f26c300d2029f278cf2af523cf94e513b89Ruben Brunk ALOGI("[ifd: %x, num_entries: %zu, entries:\n", getId(), s); 379e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk for(size_t i = 0; i < s; ++i) { 380e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk ALOGI("\t%s", mEntries[i]->toString().string()); 381e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk } 382e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk ALOGI(", next_ifd: %x]", ((mNextIfd != NULL) ? mNextIfd->getId() : 0)); 383e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} 384e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk 385e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} /*namespace img_utils*/ 386e507721000647a7d8afe44c63ef7fd04ef8971b1Ruben Brunk} /*namespace android*/ 387