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

1 files changed, 63 insertions, 0 deletions

diff --git a/media/img_utils/include/img_utils/Input.h b/media/img_utils/include/img_utils/Input.h
new file mode 100644
index 0000000..2166601
--- /dev/null
+++ b/media/img_utils/include/img_utils/Input.h
@@ -0,0 +1,63 @@
+/*
+ * 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_INPUT_H
+#define IMG_UTILS_INPUT_H
+
+#include <cutils/compiler.h>
+#include <utils/Errors.h>
+#include <stdint.h>
+
+namespace android {
+namespace img_utils {
+
+/**
+ * Utility class used as a source of bytes.
+ */
+class ANDROID_API Input {
+    public:
+        virtual ~Input();
+
+        /**
+         * Open this Input.
+         *
+         * Returns OK on success, or a negative error code.
+         */
+        virtual status_t open();
+
+        /**
+         * Read bytes into the given buffer.  At most, the number of bytes given in the
+         * count argument will be read.  Bytes will be written into the given buffer starting
+         * at the index given in the offset argument.
+         *
+         * Returns the number of bytes read.  If an error has occurred, the value pointed
+         * to by the given status_t pointer will be set to a negative error code.
+         */
+        virtual size_t read(uint8_t* buf, size_t offset, size_t count, status_t* err) = 0;
+
+        /**
+         * Close the Input.  It is not valid to call open on a previously closed Input.
+         *
+         * Returns OK on success, or a negative error code.
+         */
+        virtual status_t close();
+};
+
+} /*namespace img_utils*/
+} /*namespace android*/
+
+
+#endif /*IMG_UTILS_INPUT_H*/