From efbb781c15abf8e085f5ab8d39710bd58ea0b6e4 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Tue, 18 Sep 2012 10:36:32 -0700
Subject: HDCP module binderized

Change-Id: I866768b1e3f3b232f1934a35b65f66befc12f3f6
---
 include/media/IMediaPlayerService.h                |  2 ++
 media/libmedia/IMediaPlayerService.cpp             | 15 +++++++++++++++
 media/libmediaplayerservice/Android.mk             |  1 +
 media/libmediaplayerservice/HDCP.cpp               | 18 ++++++++++++++++--
 media/libmediaplayerservice/HDCP.h                 |  3 +++
 media/libmediaplayerservice/MediaPlayerService.cpp |  5 +++++
 media/libmediaplayerservice/MediaPlayerService.h   |  1 +
 7 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/include/media/IMediaPlayerService.h b/include/media/IMediaPlayerService.h
index c4c37b6..6090176 100644
--- a/include/media/IMediaPlayerService.h
+++ b/include/media/IMediaPlayerService.h
@@ -32,6 +32,7 @@
 namespace android {
 
 struct ICrypto;
+struct IHDCP;
 class IMediaRecorder;
 class IOMX;
 class IRemoteDisplay;
@@ -51,6 +52,7 @@ public:
     virtual sp<IMemory>         decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat) = 0;
     virtual sp<IOMX>            getOMX() = 0;
     virtual sp<ICrypto>         makeCrypto() = 0;
+    virtual sp<IHDCP>           makeHDCP() = 0;
 
     // Connects to a remote display.
     // 'iface' specifies the address of the local interface on which to listen for
diff --git a/media/libmedia/IMediaPlayerService.cpp b/media/libmedia/IMediaPlayerService.cpp
index c2ec439..c702d76 100644
--- a/media/libmedia/IMediaPlayerService.cpp
+++ b/media/libmedia/IMediaPlayerService.cpp
@@ -21,6 +21,7 @@
 #include <binder/Parcel.h>
 #include <binder/IMemory.h>
 #include <media/ICrypto.h>
+#include <media/IHDCP.h>
 #include <media/IMediaPlayerService.h>
 #include <media/IMediaRecorder.h>
 #include <media/IOMX.h>
@@ -41,6 +42,7 @@ enum {
     CREATE_METADATA_RETRIEVER,
     GET_OMX,
     MAKE_CRYPTO,
+    MAKE_HDCP,
     ENABLE_REMOTE_DISPLAY,
     ADD_BATTERY_DATA,
     PULL_BATTERY_DATA,
@@ -125,6 +127,13 @@ public:
         return interface_cast<ICrypto>(reply.readStrongBinder());
     }
 
+    virtual sp<IHDCP> makeHDCP() {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
+        remote()->transact(MAKE_HDCP, data, &reply);
+        return interface_cast<IHDCP>(reply.readStrongBinder());
+    }
+
     virtual status_t enableRemoteDisplay(const char *iface) {
         Parcel data, reply;
         data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
@@ -237,6 +246,12 @@ status_t BnMediaPlayerService::onTransact(
             reply->writeStrongBinder(crypto->asBinder());
             return NO_ERROR;
         } break;
+        case MAKE_HDCP: {
+            CHECK_INTERFACE(IMediaPlayerService, data, reply);
+            sp<IHDCP> hdcp = makeHDCP();
+            reply->writeStrongBinder(hdcp->asBinder());
+            return NO_ERROR;
+        } break;
         case ENABLE_REMOTE_DISPLAY: {
             CHECK_INTERFACE(IMediaPlayerService, data, reply);
             const char *iface = NULL;
diff --git a/media/libmediaplayerservice/Android.mk b/media/libmediaplayerservice/Android.mk
index c7227b0..5b5ed71 100644
--- a/media/libmediaplayerservice/Android.mk
+++ b/media/libmediaplayerservice/Android.mk
@@ -9,6 +9,7 @@ include $(CLEAR_VARS)
 LOCAL_SRC_FILES:=               \
     ActivityManager.cpp         \
     Crypto.cpp                  \
+    HDCP.cpp                    \
     MediaPlayerFactory.cpp      \
     MediaPlayerService.cpp      \
     MediaRecorderClient.cpp     \
diff --git a/media/libmediaplayerservice/HDCP.cpp b/media/libmediaplayerservice/HDCP.cpp
index 6f8a465..e7dea6e 100644
--- a/media/libmediaplayerservice/HDCP.cpp
+++ b/media/libmediaplayerservice/HDCP.cpp
@@ -36,13 +36,16 @@ HDCP::HDCP()
         return;
     }
 
-    typedef HDCPModule *(*CreateHDCPModuleFunc)();
+    typedef HDCPModule *(*CreateHDCPModuleFunc)(
+            void *, HDCPModule::ObserverFunc);
+
     CreateHDCPModuleFunc createHDCPModule =
         (CreateHDCPModuleFunc)dlsym(mLibHandle, "createHDCPModule");
 
     if (createHDCPModule == NULL) {
         ALOGE("Unable to find symbol 'createHDCPModule'.");
-    } else if ((mHDCPModule = createHDCPModule()) == NULL) {
+    } else if ((mHDCPModule = createHDCPModule(
+                    this, &HDCP::ObserveWrapper)) == NULL) {
         ALOGE("createHDCPModule failed.");
     }
 }
@@ -97,5 +100,16 @@ status_t HDCP::encrypt(
     return mHDCPModule->encrypt(inData, size, streamCTR, outInputCTR, outData);
 }
 
+// static
+void HDCP::ObserveWrapper(void *me, int msg, int ext1, int ext2) {
+    static_cast<HDCP *>(me)->observe(msg, ext1, ext2);
+}
+
+void HDCP::observe(int msg, int ext1, int ext2) {
+    if (mObserver != NULL) {
+        mObserver->notify(msg, ext1, ext2, NULL /* obj */);
+    }
+}
+
 }  // namespace android
 
diff --git a/media/libmediaplayerservice/HDCP.h b/media/libmediaplayerservice/HDCP.h
index 2e27689..4ee664d 100644
--- a/media/libmediaplayerservice/HDCP.h
+++ b/media/libmediaplayerservice/HDCP.h
@@ -39,6 +39,9 @@ private:
     HDCPModule *mHDCPModule;
     sp<IHDCPObserver> mObserver;
 
+    static void ObserveWrapper(void *me, int msg, int ext1, int ext2);
+    void observe(int msg, int ext1, int ext2);
+
     DISALLOW_EVIL_CONSTRUCTORS(HDCP);
 };
 
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index 1be4edf..eaa44e2 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -72,6 +72,7 @@
 #include <OMX.h>
 
 #include "Crypto.h"
+#include "HDCP.h"
 #include "RemoteDisplay.h"
 
 namespace {
@@ -281,6 +282,10 @@ sp<ICrypto> MediaPlayerService::makeCrypto() {
     return new Crypto;
 }
 
+sp<IHDCP> MediaPlayerService::makeHDCP() {
+    return new HDCP;
+}
+
 sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
         const sp<IRemoteDisplayClient>& client, const String8& iface) {
     if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index ca8a96f..6105ce4 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -250,6 +250,7 @@ public:
     virtual sp<IMemory>         decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat);
     virtual sp<IOMX>            getOMX();
     virtual sp<ICrypto>         makeCrypto();
+    virtual sp<IHDCP>           makeHDCP();
 
     virtual sp<IRemoteDisplay> listenForRemoteDisplay(const sp<IRemoteDisplayClient>& client,
             const String8& iface);
-- 
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