FDPT: Full Decrypt Path Testing Application

Cherry pick of http://go/ag/9326830

This is a merge of the full decrypt path testing CLs from the Widevine
repo: http://go/wvgerrit/q/topic:FDPT-subsamples

This is the Full Decrypt Path Testing application that can be used by
device makers to verify that OEMCrypto is correctly decrypting content
to secure buffers.

Testing: Ran App.
Bug: 113594822

Change-Id: Icbb1e2f2e762bac3cc1b7b20749922c14ea24449

libwvdrmengine/test/java/FullDecryptPathTesting/mobile/src/main/cpp/wvcrc32.h

@@ -0,0 +1,23 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+//
+// Compute CRC32 Checksum. Needed for verification of WV Keybox.
+//
+#ifndef CDM_WVCRC32_H_
+#define CDM_WVCRC32_H_
+
+#include <stdint.h>
+
+namespace wvoec {
+
+uint32_t wvcrc32(const uint8_t* p_begin, int i_count);
+uint32_t wvcrc32Init();
+uint32_t wvcrc32Cont(const uint8_t* p_begin, int i_count, uint32_t prev_crc);
+
+// Convert to network byte order
+uint32_t wvcrc32n(const uint8_t* p_begin, int i_count);
+
+}  // namespace wvoec
+
+#endif  // CDM_WVCRC32_H_