wifi-display: add support for metadata mode on encoder output

pass buffer_handle_t from encoder output to HDCP encryptor input

Bug: 8968123

Change-Id: Iea8007ce568641e213fd2e3cf6947a6f7a95746c

1 files changed, 54 insertions, 0 deletions

diff --git a/media/libmedia/IHDCP.cpp b/media/libmedia/IHDCP.cpp
index f13addc..a46ff91 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_ENCRYPT_NATIVE,
     HDCP_DECRYPT,
 };
 
@@ -108,6 +109,31 @@ struct BpHDCP : public BpInterface<IHDCP> {
         return err;
     }
 
+    virtual status_t encryptNative(
+            const sp<GraphicBuffer> &graphicBuffer,
+            size_t offset, size_t size, uint32_t streamCTR,
+            uint64_t *outInputCTR, void *outData) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
+        data.write(*graphicBuffer);
+        data.writeInt32(offset);
+        data.writeInt32(size);
+        data.writeInt32(streamCTR);
+        remote()->transact(HDCP_ENCRYPT_NATIVE, data, &reply);
+
+        status_t err = reply.readInt32();
+
+        if (err != OK) {
+            *outInputCTR = 0;
+            return err;
+        }
+
+        *outInputCTR = reply.readInt64();
+        reply.read(outData, size);
+
+        return err;
+    }
+
     virtual status_t decrypt(
             const void *inData, size_t size,
             uint32_t streamCTR, uint64_t inputCTR,
@@ -222,6 +248,34 @@ status_t BnHDCP::onTransact(
             return OK;
         }
 
+        case HDCP_ENCRYPT_NATIVE:
+        {
+            CHECK_INTERFACE(IHDCP, data, reply);
+
+            sp<GraphicBuffer> graphicBuffer = new GraphicBuffer();
+            data.read(*graphicBuffer);
+            size_t offset = data.readInt32();
+            size_t size = data.readInt32();
+            uint32_t streamCTR = data.readInt32();
+            void *outData = malloc(size);
+            uint64_t inputCTR;
+
+            status_t err = encryptNative(graphicBuffer, offset, size,
+                                         streamCTR, &inputCTR, outData);
+
+            reply->writeInt32(err);
+
+            if (err == OK) {
+                reply->writeInt64(inputCTR);
+                reply->write(outData, size);
+            }
+
+            free(outData);
+            outData = NULL;
+
+            return OK;
+        }
+
         case HDCP_DECRYPT:
         {
             size_t size = data.readInt32();