camera2: Adding TIFF writing utilities.
Adds a native image utilities library with support for:
- Writing TIFF 6.0 and TIFF EP compliant file headers.
- Additional tags defined in EXIF 2.3 and DNG 1.4 specs.
Change-Id: I7a4fef74bd5254d92baf08a3cf61af5de1b7ca83
diff --git a/media/img_utils/src/TiffEntry.cpp b/media/img_utils/src/TiffEntry.cpp
new file mode 100644
index 0000000..e028827
--- /dev/null
+++ b/media/img_utils/src/TiffEntry.cpp
@@ -0,0 +1,238 @@
+/*
+ * 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.
+ */
+
+#include <img_utils/TiffIfd.h>
+#include <img_utils/TiffHelpers.h>
+#include <img_utils/TiffEntry.h>
+
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+#include <utils/Vector.h>
+
+namespace android {
+namespace img_utils {
+
+TiffEntry::~TiffEntry() {}
+
+/**
+ * Specialize for each valid type, including sub-IFDs.
+ *
+ * Values with types other than the ones given here should not compile.
+ */
+template<>
+const Vector<sp<TiffIfd> >* TiffEntry::forceValidType<Vector<sp<TiffIfd> > >(TagType type,
+ const Vector<sp<TiffIfd> >* value) {
+ if (type == LONG) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'ifd vector' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const sp<TiffIfd>* TiffEntry::forceValidType<sp<TiffIfd> >(TagType type, const sp<TiffIfd>* value) {
+ if (type == LONG) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'ifd' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const uint8_t* TiffEntry::forceValidType<uint8_t>(TagType type, const uint8_t* value) {
+ if (type == BYTE || type == ASCII || type == UNDEFINED) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'uint8_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const int8_t* TiffEntry::forceValidType<int8_t>(TagType type, const int8_t* value) {
+ if (type == SBYTE || type == ASCII || type == UNDEFINED) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'int8_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const uint16_t* TiffEntry::forceValidType<uint16_t>(TagType type, const uint16_t* value) {
+ if (type == SHORT) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'uint16_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const int16_t* TiffEntry::forceValidType<int16_t>(TagType type, const int16_t* value) {
+ if (type == SSHORT) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'int16_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const uint32_t* TiffEntry::forceValidType<uint32_t>(TagType type, const uint32_t* value) {
+ if (type == LONG || type == RATIONAL) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'uint32_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const int32_t* TiffEntry::forceValidType<int32_t>(TagType type, const int32_t* value) {
+ if (type == SLONG || type == SRATIONAL) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'int32_t' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const double* TiffEntry::forceValidType<double>(TagType type, const double* value) {
+ if (type == DOUBLE) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'double' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+template<>
+const float* TiffEntry::forceValidType<float>(TagType type, const float* value) {
+ if (type == FLOAT) {
+ return value;
+ }
+ ALOGE("%s: Value of type 'float' is not valid for tag with TIFF type %d.",
+ __FUNCTION__, type);
+ return NULL;
+}
+
+String8 TiffEntry::toString() const {
+ String8 output;
+ uint32_t count = getCount();
+ output.appendFormat("[id: %x, type: %d, count: %u, value: '", getTag(), getType(), count);
+
+ size_t cappedCount = count;
+ if (count > MAX_PRINT_STRING_LENGTH) {
+ cappedCount = MAX_PRINT_STRING_LENGTH;
+ }
+
+ TagType type = getType();
+ switch (type) {
+ case UNDEFINED:
+ case BYTE: {
+ const uint8_t* typed_data = getData<uint8_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%u ", typed_data[i]);
+ }
+ break;
+ }
+ case ASCII: {
+ const char* typed_data = reinterpret_cast<const char*>(getData<uint8_t>());
+ size_t len = count;
+ if (count > MAX_PRINT_STRING_LENGTH) {
+ len = MAX_PRINT_STRING_LENGTH;
+ }
+ output.append(typed_data, len);
+ break;
+ }
+ case SHORT: {
+ const uint16_t* typed_data = getData<uint16_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%u ", typed_data[i]);
+ }
+ break;
+ }
+ case LONG: {
+ const uint32_t* typed_data = getData<uint32_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%u ", typed_data[i]);
+ }
+ break;
+ }
+ case RATIONAL: {
+ const uint32_t* typed_data = getData<uint32_t>();
+ cappedCount <<= 1;
+ for (size_t i = 0; i < cappedCount; i+=2) {
+ output.appendFormat("%u/%u ", typed_data[i], typed_data[i + 1]);
+ }
+ break;
+ }
+ case SBYTE: {
+ const int8_t* typed_data = getData<int8_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%d ", typed_data[i]);
+ }
+ break;
+ }
+ case SSHORT: {
+ const int16_t* typed_data = getData<int16_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%d ", typed_data[i]);
+ }
+ break;
+ }
+ case SLONG: {
+ const int32_t* typed_data = getData<int32_t>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%d ", typed_data[i]);
+ }
+ break;
+ }
+ case SRATIONAL: {
+ const int32_t* typed_data = getData<int32_t>();
+ cappedCount <<= 1;
+ for (size_t i = 0; i < cappedCount; i+=2) {
+ output.appendFormat("%d/%d ", typed_data[i], typed_data[i + 1]);
+ }
+ break;
+ }
+ case FLOAT:
+ case DOUBLE: {
+ const float* typed_data = getData<float>();
+ for (size_t i = 0; i < cappedCount; ++i) {
+ output.appendFormat("%f ", typed_data[i]);
+ }
+ break;
+ }
+ default: {
+ output.append("unknown type ");
+ break;
+ }
+ }
+
+ if (count > MAX_PRINT_STRING_LENGTH) {
+ output.append("...");
+ }
+ output.append("']");
+ return output;
+}
+
+} /*namespace img_utils*/
+} /*namespace android*/