Bug 3438258 Add SurfaceTexture as MediaPlayer sink

This change enables the use of a SurfaceTexture in place of a Surface
as the video sink for an android.media.MediaPlayer. The new API
MediaPlayer.setTexture is currently hidden.

This includes:
 - New Java and C++ interfaces
 - C++ plumbing and implementation (JNI, Binder)
 - Stagefright AwesomePlayer and NuPlayer use ANativeWindow
   (either Surface or SurfaceTextureClient)

Change-Id: I2b568bee143d9eaf3dfc6cc4533c1bebbd5afc51

3 files changed, 35 insertions, 2 deletions

diff --git a/media/libmedia/Android.mk b/media/libmedia/Android.mk
index 74fb531..fd4c6c6 100644
--- a/media/libmedia/Android.mk
+++ b/media/libmedia/Android.mk
@@ -37,7 +37,8 @@ LOCAL_SRC_FILES:= \
 
 LOCAL_SHARED_LIBRARIES := \
 	libui libcutils libutils libbinder libsonivox libicuuc libexpat \
-        libsurfaceflinger_client libcamera_client libstagefright_foundation
+        libsurfaceflinger_client libcamera_client libstagefright_foundation \
+        libgui
 
 LOCAL_MODULE:= libmedia
 
diff --git a/media/libmedia/IMediaPlayer.cpp b/media/libmedia/IMediaPlayer.cpp
index c287c0a..2399216 100644
--- a/media/libmedia/IMediaPlayer.cpp
+++ b/media/libmedia/IMediaPlayer.cpp
@@ -23,6 +23,7 @@
 #include <media/IMediaPlayer.h>
 #include <surfaceflinger/ISurface.h>
 #include <surfaceflinger/Surface.h>
+#include <gui/ISurfaceTexture.h>
 
 namespace android {
 
@@ -45,7 +46,8 @@ enum {
     SET_METADATA_FILTER,
     GET_METADATA,
     SET_AUX_EFFECT_SEND_LEVEL,
-    ATTACH_AUX_EFFECT
+    ATTACH_AUX_EFFECT,
+    SET_VIDEO_SURFACETEXTURE,
 };
 
 class BpMediaPlayer: public BpInterface<IMediaPlayer>
@@ -64,6 +66,7 @@ public:
         remote()->transact(DISCONNECT, data, &reply);
     }
 
+    // pass the buffered Surface to the media player service
     status_t setVideoSurface(const sp<Surface>& surface)
     {
         Parcel data, reply;
@@ -73,6 +76,17 @@ public:
         return reply.readInt32();
     }
 
+    // pass the buffered ISurfaceTexture to the media player service
+    status_t setVideoSurfaceTexture(const sp<ISurfaceTexture>& surfaceTexture)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaPlayer::getInterfaceDescriptor());
+        sp<IBinder> b(surfaceTexture->asBinder());
+        data.writeStrongBinder(b);
+        remote()->transact(SET_VIDEO_SURFACETEXTURE, data, &reply);
+        return reply.readInt32();
+    }
+
     status_t prepareAsync()
     {
         Parcel data, reply;
@@ -220,6 +234,7 @@ public:
         remote()->transact(ATTACH_AUX_EFFECT, data, &reply);
         return reply.readInt32();
     }
+
 };
 
 IMPLEMENT_META_INTERFACE(MediaPlayer, "android.media.IMediaPlayer");
@@ -241,6 +256,13 @@ status_t BnMediaPlayer::onTransact(
             reply->writeInt32(setVideoSurface(surface));
             return NO_ERROR;
         } break;
+        case SET_VIDEO_SURFACETEXTURE: {
+            CHECK_INTERFACE(IMediaPlayer, data, reply);
+            sp<ISurfaceTexture> surfaceTexture =
+                    interface_cast<ISurfaceTexture>(data.readStrongBinder());
+            reply->writeInt32(setVideoSurfaceTexture(surfaceTexture));
+            return NO_ERROR;
+        } break;
         case PREPARE_ASYNC: {
             CHECK_INTERFACE(IMediaPlayer, data, reply);
             reply->writeInt32(prepareAsync());
diff --git a/media/libmedia/mediaplayer.cpp b/media/libmedia/mediaplayer.cpp
index 87c8fe4..0ee0249 100644
--- a/media/libmedia/mediaplayer.cpp
+++ b/media/libmedia/mediaplayer.cpp
@@ -201,6 +201,16 @@ status_t MediaPlayer::setVideoSurface(const sp<Surface>& surface)
     return mPlayer->setVideoSurface(surface);
 }
 
+status_t MediaPlayer::setVideoSurfaceTexture(
+        const sp<ISurfaceTexture>& surfaceTexture)
+{
+    LOGV("setVideoSurfaceTexture");
+    Mutex::Autolock _l(mLock);
+    if (mPlayer == 0) return NO_INIT;
+
+    return mPlayer->setVideoSurfaceTexture(surfaceTexture);
+}
+
 // must call with lock held
 status_t MediaPlayer::prepareAsync_l()
 {