Add ParcelSurfaceTexture Java class to enable ISurfaceTexture sharing via Binder.

This adds a new ParcelSurfaceTexture.java class that can be instantiated with
a SurfaceTexture and used to send the corresponding ISurfaceTexture interface
to another process via Binder. The ParcelSurfaceTexture java object can then
be used to create an ANativeWindow based on the SurfaceTextureClient interface.

Change-Id: Ie38ea948b866e52f36a6d0f6cde19b54a8546817

1 files changed, 8 insertions, 2 deletions

diff --git a/core/jni/android_view_Surface.cpp b/core/jni/android_view_Surface.cpp
index ec8b6e0..70c2f7b 100644
--- a/core/jni/android_view_Surface.cpp
+++ b/core/jni/android_view_Surface.cpp
@@ -55,6 +55,9 @@ enum {
 static const char* const OutOfResourcesException =
     "android/view/Surface$OutOfResourcesException";
 
+const char* const kSurfaceSessionClassPathName = "android/view/SurfaceSession";
+const char* const kSurfaceClassPathName = "android/view/Surface";
+
 struct sso_t {
     jfieldID client;
 };
@@ -181,6 +184,11 @@ sp<ANativeWindow> android_Surface_getNativeWindow(
     return getSurface(env, clazz);
 }
 
+bool android_Surface_isInstanceOf(JNIEnv* env, jobject obj) {
+    jclass surfaceClass = env->FindClass(kSurfaceClassPathName);
+    return env->IsInstanceOf(obj, surfaceClass);
+}
+
 static void setSurface(JNIEnv* env, jobject clazz, const sp<Surface>& surface)
 {
     Surface* const p = (Surface*)env->GetIntField(clazz, so.surface);
@@ -759,8 +767,6 @@ static void Surface_writeToParcel(
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 
-const char* const kSurfaceSessionClassPathName = "android/view/SurfaceSession";
-const char* const kSurfaceClassPathName = "android/view/Surface";
 static void nativeClassInit(JNIEnv* env, jclass clazz);
 
 static JNINativeMethod gSurfaceSessionMethods[] = {