From a8fc772b5b13e359fa73d5867c0f617b8eae4a41 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Wed, 29 Aug 2012 13:26:55 -0700
Subject: [PATCH] initial checkin of a preliminary HDCP API for vendors to
 implement.

Change-Id: If98277efdec1bc8f1e9f4af1ca73324e4c3d469b
---
 include/media/hardware/HDCPAPI.h | 85 ++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 include/media/hardware/HDCPAPI.h

diff --git a/include/media/hardware/HDCPAPI.h b/include/media/hardware/HDCPAPI.h
new file mode 100644
index 000000000..bb9154080
--- /dev/null
+++ b/include/media/hardware/HDCPAPI.h
@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+
+#ifndef HDCP_API_H_
+
+#define HDCP_API_H_
+
+#include <utils/Errors.h>
+
+namespace android {
+
+struct HDCPModule {
+    typedef void (*ObserverFunc)(int msg, int ext1, int ext2);
+
+    // The msg argument in calls to the observer notification function.
+    enum {
+        // Sent in response to a call to "HDCPModule::initAsync" once
+        // initialization has either been successfully completed,
+        // i.e. the HDCP session is now fully setup (AKE, Locality Check,
+        // SKE and any authentication with repeaters completed) or failed.
+        // ext1 should be a suitable error code (status_t), ext2 is
+        // unused.
+        HDCP_INITIALIZATION_COMPLETE,
+
+        // Sent upon completion of a call to "HDCPModule::shutdownAsync".
+        // ext1 should be a suitable error code, ext2 is unused.
+        HDCP_SHUTDOWN_COMPLETE,
+    };
+
+    // Module can call the notification function to signal completion/failure
+    // of asynchronous operations (such as initialization) or out of band
+    // events.
+    HDCPModule(ObserverFunc observerNotify);
+
+    virtual ~HDCPModule();
+
+    // Request to setup an HDCP session with the specified host listening
+    // on the specified port.
+    virtual status_t initAsync(const char *host, unsigned port) = 0;
+
+    // Request to shutdown the active HDCP session.
+    virtual status_t shutdownAsync() = 0;
+
+    // Encrypt a data according to the HDCP spec. The data is to be
+    // encrypted in-place, only size bytes of data should be read/write,
+    // even if the size is not a multiple of 128 bit (16 bytes).
+    // This operation is to be synchronous, i.e. this call does not return
+    // until outData contains size bytes of encrypted data.
+    // streamCTR will be assigned by the caller (to 0 for the first PES stream,
+    // 1 for the second and so on)
+    // inputCTR will be maintained by the callee for each PES stream.
+    virtual status_t encrypt(
+            const void *inData, size_t size, uint32_t streamCTR,
+            uint64_t *outInputCTR, void *outData) = 0;
+
+private:
+    HDCPModule(const HDCPModule &);
+    HDCPModule &operator=(const HDCPModule &);
+};
+
+}  // namespace android
+
+// A shared library exporting the following method should be included to
+// support HDCP functionality. The shared library must be called
+// "libstagefright_hdcp.so", it will be dynamically loaded into the
+// mediaserver process.
+extern "C" {
+    extern android::HDCPModule *createHDCPModule();
+}
+
+#endif  // HDCP_API_H_
+