--- /dev/null
+/*
+ * Copyright (C) 2012 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 <utils/Errors.h>
+
+#ifndef CRYPTO_API_H_
+
+#define CRYPTO_API_H_
+
+namespace android {
+
+struct CryptoPlugin;
+
+struct CryptoFactory {
+ CryptoFactory() {}
+ virtual ~CryptoFactory() {}
+
+ virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) const = 0;
+
+ virtual status_t createPlugin(
+ const uint8_t uuid[16], const void *data, size_t size,
+ CryptoPlugin **plugin) = 0;
+
+private:
+ CryptoFactory(const CryptoFactory &);
+ CryptoFactory &operator=(const CryptoFactory &);
+};
+
+struct CryptoPlugin {
+ enum Mode {
+ kMode_Unencrypted = 0,
+ kMode_AES_CTR = 1,
+
+ // Neither key nor iv are being used in this mode.
+ // Each subsample is encrypted w/ an iv of all zeroes.
+ kMode_AES_WV = 2, // FIX constant
+ };
+
+ struct SubSample {
+ size_t mNumBytesOfClearData;
+ size_t mNumBytesOfEncryptedData;
+ };
+
+ CryptoPlugin() {}
+ virtual ~CryptoPlugin() {}
+
+ // If this method returns false, a non-secure decoder will be used to
+ // decode the data after decryption. The decrypt API below will have
+ // to support insecure decryption of the data (secure = false) for
+ // media data of the given mime type.
+ virtual bool requiresSecureDecoderComponent(const char *mime) const = 0;
+
+ virtual status_t decrypt(
+ bool secure,
+ const uint8_t key[16],
+ const uint8_t iv[16],
+ Mode mode,
+ const void *srcPtr,
+ const SubSample *subSamples, size_t numSubSamples,
+ void *dstPtr) = 0;
+
+private:
+ CryptoPlugin(const CryptoPlugin &);
+ CryptoPlugin &operator=(const CryptoPlugin &);
+};
+
+} // namespace android
+
+extern "C" {
+ extern android::CryptoFactory *createCryptoFactory();
+}
+
+#endif // CRYPTO_API_H_