Add ClearKey Utilities

Adds some utility functionality that is shared by multiple parts of
the ClearKey code.

Change-Id: I33a896eb68b2937918f145c9bd27174a119294b9

4 files changed, 138 insertions, 0 deletions

diff --git a/drm/mediadrm/plugins/clearkey/Android.mk b/drm/mediadrm/plugins/clearkey/Android.mk
new file mode 100644
index 0000000..22613cc
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/Android.mk
@@ -0,0 +1,39 @@
+#
+# Copyright (C) 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.
+#
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    Utils.cpp \
+
+LOCAL_C_INCLUDES := \
+    bionic \
+    frameworks/av/drm/mediadrm/plugins/clearkey \
+    frameworks/av/include \
+    frameworks/native/include \
+
+LOCAL_MODULE := libdrmclearkeyplugin
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR_SHARED_LIBRARIES)/mediadrm
+
+LOCAL_SHARED_LIBRARIES := \
+    liblog \
+    libstagefright_foundation \
+    libutils \
+
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/drm/mediadrm/plugins/clearkey/ClearKeyTypes.h b/drm/mediadrm/plugins/clearkey/ClearKeyTypes.h
new file mode 100644
index 0000000..65b434f
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/ClearKeyTypes.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 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 CLEARKEY_TYPES_H_
+#define CLEARKEY_TYPES_H_
+
+#include <media/hardware/CryptoAPI.h>
+#include <utils/KeyedVector.h>
+#include <utils/Vector.h>
+
+namespace clearkeydrm {
+
+const uint8_t kBlockSize = 16;
+typedef uint8_t KeyId[kBlockSize];
+typedef uint8_t Iv[kBlockSize];
+
+typedef android::CryptoPlugin::SubSample SubSample;
+
+typedef android::KeyedVector<android::Vector<uint8_t>,
+        android::Vector<uint8_t> > KeyMap;
+
+} // namespace clearkeydrm
+
+#endif // CLEARKEY_TYPES_H_
diff --git a/drm/mediadrm/plugins/clearkey/Utils.cpp b/drm/mediadrm/plugins/clearkey/Utils.cpp
new file mode 100644
index 0000000..93c643b
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/Utils.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#include "Utils.h"
+
+namespace android {
+
+bool operator<(const Vector<uint8_t> &lhs, const Vector<uint8_t> &rhs) {
+    if (lhs.size() < rhs.size()) {
+        return true;
+    } else if (lhs.size() > rhs.size()) {
+        return false;
+    }
+    return memcmp((void *)lhs.array(), (void *)rhs.array(), rhs.size()) < 0;
+}
+
+} // namespace android
diff --git a/drm/mediadrm/plugins/clearkey/Utils.h b/drm/mediadrm/plugins/clearkey/Utils.h
new file mode 100644
index 0000000..2543124
--- /dev/null
+++ b/drm/mediadrm/plugins/clearkey/Utils.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 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 CLEARKEY_UTILS_H_
+#define CLEARKEY_UTILS_H_
+
+#include <utils/Vector.h>
+
+// Add a comparison operator for this Vector specialization so that it can be
+// used as a key in a KeyedVector.
+namespace android {
+
+bool operator<(const Vector<uint8_t> &lhs, const Vector<uint8_t> &rhs);
+
+} // namespace android
+
+#define UNUSED(x) (void)(x);
+
+#endif // CLEARKEY_UTILS_H_