Add OBB file helper class
ObbFile is a binary blob that will be used in packaging large files
with smaller APKs.
Change-Id: Ib1594346cfa2f49113de6565af77c24efbd89d63
diff --git a/include/utils/ObbFile.h b/include/utils/ObbFile.h
new file mode 100644
index 0000000..075927c
--- /dev/null
+++ b/include/utils/ObbFile.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2010 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 OBBFILE_H_
+#define OBBFILE_H_
+
+#include <stdint.h>
+
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+
+namespace android {
+
+class ObbFile : public RefBase {
+protected:
+ virtual ~ObbFile();
+
+public:
+ ObbFile();
+
+ bool readFrom(const char* filename);
+ bool readFrom(int fd);
+ bool writeTo(const char* filename);
+ bool writeTo(int fd);
+
+ const char* getFileName() const {
+ return mFileName;
+ }
+
+ const String8 getPackageName() const {
+ return mPackageName;
+ }
+
+ int32_t getVersion() const {
+ return mVersion;
+ }
+
+ void setPackageName(String8 packageName) {
+ mPackageName = packageName;
+ }
+
+ void setVersion(int32_t version) {
+ mVersion = version;
+ }
+
+ static inline uint32_t get4LE(const unsigned char* buf) {
+ return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
+ }
+
+ static inline void put4LE(unsigned char* buf, uint32_t val) {
+ buf[0] = val & 0xFF;
+ buf[1] = (val >> 8) & 0xFF;
+ buf[2] = (val >> 16) & 0xFF;
+ buf[3] = (val >> 24) & 0xFF;
+ }
+
+private:
+ /* Package name this ObbFile is associated with */
+ String8 mPackageName;
+
+ /* Package version this ObbFile is associated with */
+ int32_t mVersion;
+
+ const char* mFileName;
+
+ size_t mFileSize;
+
+ unsigned char* mReadBuf;
+
+ bool parseObbFile(int fd);
+};
+
+}
+#endif /* OBBFILE_H_ */