1 files changed, 58 insertions, 0 deletions
diff --git a/libs/protoutil/include/android/util/protobuf.h b/libs/protoutil/include/android/util/protobuf.h
new file mode 100644
index 000000000000..f4e8d092ba52
--- /dev/null
+++ b/libs/protoutil/include/android/util/protobuf.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 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 ANDROID_UTIL_PROTOBUF_H
+#define ANDROID_UTIL_PROTOBUF_H
+
+#include <stdint.h>
+
+namespace android {
+namespace util {
+
+using namespace std;
+
+const uint8_t WIRE_TYPE_VARINT = 0;
+const uint8_t WIRE_TYPE_FIXED64 = 1;
+const uint8_t WIRE_TYPE_LENGTH_DELIMITED = 2;
+const uint8_t WIRE_TYPE_FIXED32 = 5;
+
+/**
+ * Read the wire type from varint, it is the smallest 3 bits.
+ */
+uint8_t read_wire_type(uint32_t varint);
+
+/**
+ * read field id from varint, it is varint >> 3;
+ */
+uint32_t read_field_id(uint32_t varint);
+
+/**
+ * Write a varint into the buffer. Return the next position to write at.
+ * There must be 10 bytes in the buffer. The same as
+ * EncodedBuffer.writeRawVarint32
+ */
+uint8_t* write_raw_varint(uint8_t* buf, uint32_t val);
+
+/**
+ * Write a protobuf WIRE_TYPE_LENGTH_DELIMITED header. Return the next position
+ * to write at. There must be 20 bytes in the buffer.
+ */
+uint8_t* write_length_delimited_tag_header(uint8_t* buf, uint32_t fieldId, size_t size);
+
+} // util
+} // android
+
+#endif  // ANDROID_UTIL_PROTOUBUF_H