From a6a88d9c445e261972c2433254e0a996336e78a4 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Wed, 30 Jan 2013 10:41:25 -0800
Subject: Plumbing to reflect minor changes in the HDCP module API that allow
 for

support of _decryption_ modules in addition to what we already supported.

Change-Id: Ic37b87dc170ba8def3817991d25df798f21e950b
---
 media/libmedia/IHDCP.cpp | 49 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

(limited to 'media/libmedia/IHDCP.cpp')

diff --git a/media/libmedia/IHDCP.cpp b/media/libmedia/IHDCP.cpp
index 493f5a4..f13addc 100644
--- a/media/libmedia/IHDCP.cpp
+++ b/media/libmedia/IHDCP.cpp
@@ -31,6 +31,7 @@ enum {
     HDCP_INIT_ASYNC,
     HDCP_SHUTDOWN_ASYNC,
     HDCP_ENCRYPT,
+    HDCP_DECRYPT,
 };
 
 struct BpHDCPObserver : public BpInterface<IHDCPObserver> {
@@ -106,6 +107,29 @@ struct BpHDCP : public BpInterface<IHDCP> {
 
         return err;
     }
+
+    virtual status_t decrypt(
+            const void *inData, size_t size,
+            uint32_t streamCTR, uint64_t inputCTR,
+            void *outData) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
+        data.writeInt32(size);
+        data.write(inData, size);
+        data.writeInt32(streamCTR);
+        data.writeInt64(inputCTR);
+        remote()->transact(HDCP_DECRYPT, data, &reply);
+
+        status_t err = reply.readInt32();
+
+        if (err != OK) {
+            return err;
+        }
+
+        reply.read(outData, size);
+
+        return err;
+    }
 };
 
 IMPLEMENT_META_INTERFACE(HDCP, "android.hardware.IHDCP");
@@ -198,6 +222,31 @@ status_t BnHDCP::onTransact(
             return OK;
         }
 
+        case HDCP_DECRYPT:
+        {
+            size_t size = data.readInt32();
+
+            void *inData = malloc(2 * size);
+            void *outData = (uint8_t *)inData + size;
+
+            data.read(inData, size);
+
+            uint32_t streamCTR = data.readInt32();
+            uint64_t inputCTR = data.readInt64();
+            status_t err = decrypt(inData, size, streamCTR, inputCTR, outData);
+
+            reply->writeInt32(err);
+
+            if (err == OK) {
+                reply->write(outData, size);
+            }
+
+            free(inData);
+            inData = outData = NULL;
+
+            return OK;
+        }
+
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
-- 
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