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diff --git a/media/img_utils/include/img_utils/TiffHelpers.h b/media/img_utils/include/img_utils/TiffHelpers.h
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+/*
+ * 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.
+ */
+
+#ifndef IMG_UTILS_TIFF_HELPERS_H
+#define IMG_UTILS_TIFF_HELPERS_H
+
+#include <stdint.h>
+
+namespace android {
+namespace img_utils {
+
+const uint8_t ZERO_WORD[] = {0, 0, 0, 0};
+
+#define BAIL_ON_FAIL(x, flag) \
+ if ((flag = (x)) != OK) return flag;
+
+#define BYTES_TILL_WORD(index) \
+ ((TIFF_WORD_SIZE - ((index) % TIFF_WORD_SIZE)) % TIFF_WORD_SIZE)
+
+#define WORD_ALIGN(count) \
+ count += BYTES_TILL_WORD(count);
+
+#define ZERO_TILL_WORD(output, index, ret) \
+ { \
+ size_t remaining = BYTES_TILL_WORD(index); \
+ if (remaining > 0) { \
+ BAIL_ON_FAIL(output->write(ZERO_WORD, 0, remaining), ret); \
+ } \
+ }
+
+/**
+ * Basic TIFF header constants.
+ */
+enum {
+ BAD_OFFSET = 0,
+ TIFF_WORD_SIZE = 4, // Size in bytes
+ IFD_HEADER_SIZE = 2, // Size in bytes
+ IFD_FOOTER_SIZE = 4, // Size in bytes
+ TIFF_ENTRY_SIZE = 12, // Size in bytes
+ MAX_IFD_ENTRIES = UINT16_MAX,
+ FILE_HEADER_SIZE = 8, // Size in bytes
+ ENDIAN_MARKER_SIZE = 2, // Size in bytes
+ TIFF_MARKER_SIZE = 2, // Size in bytes
+ OFFSET_MARKER_SIZE = 4, // Size in bytes
+ TIFF_FILE_MARKER = 42,
+ BIG_ENDIAN_MARKER = 0x4D4Du,
+ LITTLE_ENDIAN_MARKER = 0x4949u
+};
+
+/**
+ * Constants for the TIFF tag types.
+ */
+enum TagType {
+ UNKNOWN_TAGTYPE = 0,
+ BYTE=1,
+ ASCII,
+ SHORT,
+ LONG,
+ RATIONAL,
+ SBYTE,
+ UNDEFINED,
+ SSHORT,
+ SLONG,
+ SRATIONAL,
+ FLOAT,
+ DOUBLE
+};
+
+/**
+ * Sizes of the TIFF entry fields (in bytes).
+ */
+enum {
+ TAG_SIZE = 2,
+ TYPE_SIZE = 2,
+ COUNT_SIZE = 4,
+ OFFSET_SIZE = 4
+};
+
+/**
+ * Convenience IFD id constants.
+ */
+enum {
+ IFD_0 = 0,
+ RAW_IFD,
+ PROFILE_IFD,
+ PREVIEW_IFD
+};
+
+inline size_t getTypeSize(TagType type) {
+ switch(type) {
+ case UNDEFINED:
+ case ASCII:
+ case BYTE:
+ case SBYTE:
+ return 1;
+ case SHORT:
+ case SSHORT:
+ return 2;
+ case LONG:
+ case SLONG:
+ case FLOAT:
+ return 4;
+ case RATIONAL:
+ case SRATIONAL:
+ case DOUBLE:
+ return 8;
+ default:
+ return 0;
+ }
+}
+
+inline uint32_t calculateIfdSize(size_t numberOfEntries) {
+ return IFD_HEADER_SIZE + IFD_FOOTER_SIZE + TIFF_ENTRY_SIZE * numberOfEntries;
+}
+
+} /*namespace img_utils*/
+} /*namespace android*/
+
+#endif /*IMG_UTILS_TIFF_HELPERS_H*/