1 files changed, 391 insertions, 0 deletions
diff --git a/media/img_utils/src/TiffWriter.cpp b/media/img_utils/src/TiffWriter.cpp
new file mode 100644
index 0000000..ac41734
--- /dev/null
+++ b/media/img_utils/src/TiffWriter.cpp
@@ -0,0 +1,391 @@
+/*
+ * Copyright 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "TiffWriter"
+
+#include <img_utils/TiffHelpers.h>
+#include <img_utils/TiffWriter.h>
+#include <img_utils/TagDefinitions.h>
+
+#include <assert.h>
+
+namespace android {
+namespace img_utils {
+
+KeyedVector<uint16_t, const TagDefinition_t*> TiffWriter::buildTagMap(
+            const TagDefinition_t* definitions, size_t length) {
+    KeyedVector<uint16_t, const TagDefinition_t*> map;
+    for(size_t i = 0; i < length; ++i) {
+        map.add(definitions[i].tagId, definitions + i);
+    }
+    return map;
+}
+
+#define COMPARE(op) \
+bool Orderable::operator op (const Orderable& orderable) const { \
+    return getComparableValue() op orderable.getComparableValue(); \
+}
+
+#define ARRAY_SIZE(array) \
+    (sizeof(array) / sizeof(array[0]))
+
+KeyedVector<uint16_t, const TagDefinition_t*> TiffWriter::sTagMaps[] = {
+    buildTagMap(TIFF_EP_TAG_DEFINITIONS, ARRAY_SIZE(TIFF_EP_TAG_DEFINITIONS)),
+    buildTagMap(DNG_TAG_DEFINITIONS, ARRAY_SIZE(DNG_TAG_DEFINITIONS)),
+    buildTagMap(EXIF_2_3_TAG_DEFINITIONS, ARRAY_SIZE(EXIF_2_3_TAG_DEFINITIONS)),
+    buildTagMap(TIFF_6_TAG_DEFINITIONS, ARRAY_SIZE(TIFF_6_TAG_DEFINITIONS))
+};
+
+TiffWriter::TiffWriter() : mTagMaps(sTagMaps), mNumTagMaps(DEFAULT_NUM_TAG_MAPS) {}
+
+TiffWriter::TiffWriter(KeyedVector<uint16_t, const TagDefinition_t*>* enabledDefinitions,
+        size_t length) : mTagMaps(enabledDefinitions), mNumTagMaps(length) {}
+
+TiffWriter::~TiffWriter() {}
+
+status_t TiffWriter::write(Output* out, StripSource** sources, size_t sourcesCount,
+        Endianness end) {
+    status_t ret = OK;
+    EndianOutput endOut(out, end);
+
+    if (mIfd == NULL) {
+        ALOGE("%s: Tiff header is empty.", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    uint32_t totalSize = getTotalSize();
+
+    KeyedVector<uint32_t, uint32_t> offsetVector;
+
+    for (size_t i = 0; i < mNamedIfds.size(); ++i) {
+        if (mNamedIfds[i]->uninitializedOffsets()) {
+            uint32_t stripSize = mNamedIfds[i]->getStripSize();
+            if (mNamedIfds[i]->setStripOffset(totalSize) != OK) {
+                ALOGE("%s: Could not set strip offsets.", __FUNCTION__);
+                return BAD_VALUE;
+            }
+            totalSize += stripSize;
+            WORD_ALIGN(totalSize);
+            offsetVector.add(mNamedIfds.keyAt(i), totalSize);
+        }
+    }
+
+    size_t offVecSize = offsetVector.size();
+    if (offVecSize != sourcesCount) {
+        ALOGE("%s: Mismatch between number of IFDs with uninitialized strips (%zu) and"
+                " sources (%zu).", __FUNCTION__, offVecSize, sourcesCount);
+        return BAD_VALUE;
+    }
+
+    BAIL_ON_FAIL(writeFileHeader(endOut), ret);
+
+    uint32_t offset = FILE_HEADER_SIZE;
+    sp<TiffIfd> ifd = mIfd;
+    while(ifd != NULL) {
+        BAIL_ON_FAIL(ifd->writeData(offset, &endOut), ret);
+        offset += ifd->getSize();
+        ifd = ifd->getNextIfd();
+    }
+
+    if (LOG_NDEBUG == 0) {
+        log();
+    }
+
+    for (size_t i = 0; i < offVecSize; ++i) {
+        uint32_t ifdKey = offsetVector.keyAt(i);
+        uint32_t nextOffset = offsetVector[i];
+        uint32_t sizeToWrite = mNamedIfds[ifdKey]->getStripSize();
+        bool found = false;
+        for (size_t j = 0; j < sourcesCount; ++j) {
+            if (sources[j]->getIfd() == ifdKey) {
+                if ((ret = sources[i]->writeToStream(endOut, sizeToWrite)) != OK) {
+                    ALOGE("%s: Could not write to stream, received %d.", __FUNCTION__, ret);
+                    return ret;
+                }
+                ZERO_TILL_WORD(&endOut, sizeToWrite, ret);
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            ALOGE("%s: No stream for byte strips for IFD %u", __FUNCTION__, ifdKey);
+            return BAD_VALUE;
+        }
+        assert(nextOffset == endOut.getCurrentOffset());
+    }
+
+    return ret;
+}
+
+status_t TiffWriter::write(Output* out, Endianness end) {
+    status_t ret = OK;
+    EndianOutput endOut(out, end);
+
+    if (mIfd == NULL) {
+        ALOGE("%s: Tiff header is empty.", __FUNCTION__);
+        return BAD_VALUE;
+    }
+    BAIL_ON_FAIL(writeFileHeader(endOut), ret);
+
+    uint32_t offset = FILE_HEADER_SIZE;
+    sp<TiffIfd> ifd = mIfd;
+    while(ifd != NULL) {
+        BAIL_ON_FAIL(ifd->writeData(offset, &endOut), ret);
+        offset += ifd->getSize();
+        ifd = ifd->getNextIfd();
+    }
+    return ret;
+}
+
+
+const TagDefinition_t* TiffWriter::lookupDefinition(uint16_t tag) const {
+    const TagDefinition_t* definition = NULL;
+    for (size_t i = 0; i < mNumTagMaps; ++i) {
+        ssize_t index = mTagMaps[i].indexOfKey(tag);
+        if (index >= 0) {
+            definition = mTagMaps[i][index];
+            break;
+        }
+    }
+
+    if (definition == NULL) {
+        ALOGE("%s: No definition exists for tag with id %x.", __FUNCTION__, tag);
+    }
+    return definition;
+}
+
+sp<TiffEntry> TiffWriter::getEntry(uint16_t tag, uint32_t ifd) const {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    if (index < 0) {
+        ALOGE("%s: No IFD %d set for this writer.", __FUNCTION__, ifd);
+        return NULL;
+    }
+    return mNamedIfds[index]->getEntry(tag);
+}
+
+void TiffWriter::removeEntry(uint16_t tag, uint32_t ifd) {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    if (index >= 0) {
+        mNamedIfds[index]->removeEntry(tag);
+    }
+}
+
+status_t TiffWriter::addEntry(const sp<TiffEntry>& entry, uint32_t ifd) {
+    uint16_t tag = entry->getTag();
+
+    const TagDefinition_t* definition = lookupDefinition(tag);
+
+    if (definition == NULL) {
+        ALOGE("%s: No definition exists for tag 0x%x.", __FUNCTION__, tag);
+        return BAD_INDEX;
+    }
+
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+
+    // Add a new IFD if necessary
+    if (index < 0) {
+        ALOGE("%s: No IFD %u exists.", __FUNCTION__, ifd);
+        return NAME_NOT_FOUND;
+    }
+
+    sp<TiffIfd> selectedIfd  = mNamedIfds[index];
+    return selectedIfd->addEntry(entry);
+}
+
+status_t TiffWriter::addStrip(uint32_t ifd) {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    if (index < 0) {
+        ALOGE("%s: Ifd %u doesn't exist, cannot add strip entries.", __FUNCTION__, ifd);
+        return BAD_VALUE;
+    }
+    sp<TiffIfd> selected = mNamedIfds[index];
+    return selected->validateAndSetStripTags();
+}
+
+status_t TiffWriter::addIfd(uint32_t ifd) {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    if (index >= 0) {
+        ALOGE("%s: Ifd with ID 0x%x already exists.", __FUNCTION__, ifd);
+        return BAD_VALUE;
+    }
+
+    sp<TiffIfd> newIfd = new TiffIfd(ifd);
+    if (mIfd == NULL) {
+        mIfd = newIfd;
+    } else {
+        sp<TiffIfd> last = findLastIfd();
+        last->setNextIfd(newIfd);
+    }
+
+    if(mNamedIfds.add(ifd, newIfd) < 0) {
+        ALOGE("%s: Failed to add new IFD 0x%x.", __FUNCTION__, ifd);
+        return BAD_VALUE;
+    }
+
+    return OK;
+}
+
+status_t TiffWriter::addSubIfd(uint32_t parentIfd, uint32_t ifd, SubIfdType type) {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    if (index >= 0) {
+        ALOGE("%s: Ifd with ID 0x%x already exists.", __FUNCTION__, ifd);
+        return BAD_VALUE;
+    }
+
+    ssize_t parentIndex = mNamedIfds.indexOfKey(parentIfd);
+    if (parentIndex < 0) {
+        ALOGE("%s: Parent IFD with ID 0x%x does not exist.", __FUNCTION__, parentIfd);
+        return BAD_VALUE;
+    }
+
+    sp<TiffIfd> parent = mNamedIfds[parentIndex];
+    sp<TiffIfd> newIfd = new TiffIfd(ifd);
+
+    uint16_t subIfdTag;
+    if (type == SUBIFD) {
+        subIfdTag = TAG_SUBIFDS;
+    } else if (type == GPSINFO) {
+        subIfdTag = TAG_GPSINFO;
+    } else {
+        ALOGE("%s: Unknown SubIFD type %d.", __FUNCTION__, type);
+        return BAD_VALUE;
+    }
+
+    sp<TiffEntry> subIfds = parent->getEntry(subIfdTag);
+    if (subIfds == NULL) {
+        if (buildEntry(subIfdTag, 1, &newIfd, &subIfds) < 0) {
+            ALOGE("%s: Failed to build SubIfd entry in IFD 0x%x.", __FUNCTION__, parentIfd);
+            return BAD_VALUE;
+        }
+    } else {
+        if (type == GPSINFO) {
+            ALOGE("%s: Cannot add GPSInfo SubIFD to IFD %u, one already exists.", __FUNCTION__,
+                    ifd);
+            return BAD_VALUE;
+        }
+
+        Vector<sp<TiffIfd> > subIfdList;
+        const sp<TiffIfd>* oldIfdArray = subIfds->getData<sp<TiffIfd> >();
+        if (subIfdList.appendArray(oldIfdArray, subIfds->getCount()) < 0) {
+            ALOGE("%s: Failed to build SubIfd entry in IFD 0x%x.", __FUNCTION__, parentIfd);
+            return BAD_VALUE;
+        }
+
+        if (subIfdList.add(newIfd) < 0) {
+            ALOGE("%s: Failed to build SubIfd entry in IFD 0x%x.", __FUNCTION__, parentIfd);
+            return BAD_VALUE;
+        }
+
+        uint32_t count = subIfdList.size();
+        if (buildEntry(subIfdTag, count, subIfdList.array(), &subIfds) < 0) {
+            ALOGE("%s: Failed to build SubIfd entry in IFD 0x%x.", __FUNCTION__, parentIfd);
+            return BAD_VALUE;
+        }
+    }
+
+    if (parent->addEntry(subIfds) < 0) {
+        ALOGE("%s: Failed to add SubIfd entry in IFD 0x%x.", __FUNCTION__, parentIfd);
+        return BAD_VALUE;
+    }
+
+    if(mNamedIfds.add(ifd, newIfd) < 0) {
+        ALOGE("%s: Failed to add new IFD 0x%x.", __FUNCTION__, ifd);
+        return BAD_VALUE;
+    }
+
+    return OK;
+}
+
+TagType TiffWriter::getDefaultType(uint16_t tag) const {
+    const TagDefinition_t* definition = lookupDefinition(tag);
+    if (definition == NULL) {
+        ALOGE("%s: Could not find definition for tag %x", __FUNCTION__, tag);
+        return UNKNOWN_TAGTYPE;
+    }
+    return definition->defaultType;
+}
+
+uint32_t TiffWriter::getDefaultCount(uint16_t tag) const {
+    const TagDefinition_t* definition = lookupDefinition(tag);
+    if (definition == NULL) {
+        ALOGE("%s: Could not find definition for tag %x", __FUNCTION__, tag);
+        return 0;
+    }
+    return definition->fixedCount;
+}
+
+bool TiffWriter::hasIfd(uint32_t ifd) const {
+    ssize_t index = mNamedIfds.indexOfKey(ifd);
+    return index >= 0;
+}
+
+bool TiffWriter::checkIfDefined(uint16_t tag) const {
+    return lookupDefinition(tag) != NULL;
+}
+
+const char* TiffWriter::getTagName(uint16_t tag) const {
+    const TagDefinition_t* definition = lookupDefinition(tag);
+    if (definition == NULL) {
+        return NULL;
+    }
+    return definition->tagName;
+}
+
+sp<TiffIfd> TiffWriter::findLastIfd() {
+    sp<TiffIfd> ifd = mIfd;
+    while(ifd != NULL) {
+        sp<TiffIfd> nextIfd = ifd->getNextIfd();
+        if (nextIfd == NULL) {
+            break;
+        }
+        ifd = nextIfd;
+    }
+    return ifd;
+}
+
+status_t TiffWriter::writeFileHeader(EndianOutput& out) {
+    status_t ret = OK;
+    uint16_t endMarker = (out.getEndianness() == BIG) ? BIG_ENDIAN_MARKER : LITTLE_ENDIAN_MARKER;
+    BAIL_ON_FAIL(out.write(&endMarker, 0, 1), ret);
+
+    uint16_t tiffMarker = TIFF_FILE_MARKER;
+    BAIL_ON_FAIL(out.write(&tiffMarker, 0, 1), ret);
+
+    uint32_t offsetMarker = FILE_HEADER_SIZE;
+    BAIL_ON_FAIL(out.write(&offsetMarker, 0, 1), ret);
+    return ret;
+}
+
+uint32_t TiffWriter::getTotalSize() const {
+    uint32_t totalSize = FILE_HEADER_SIZE;
+    sp<TiffIfd> ifd = mIfd;
+    while(ifd != NULL) {
+        totalSize += ifd->getSize();
+        ifd = ifd->getNextIfd();
+    }
+    return totalSize;
+}
+
+void TiffWriter::log() const {
+    ALOGI("%s: TiffWriter:", __FUNCTION__);
+    size_t length = mNamedIfds.size();
+    for (size_t i = 0; i < length; ++i) {
+        mNamedIfds[i]->log();
+    }
+}
+
+} /*namespace img_utils*/
+} /*namespace android*/