Fix the issue where onFrameAvailable is not triggered if SurfaceTexture is in sync mode.

If there is more frame after updateTexImage, trigger the listener again.

Change-Id: I1415ae9a914cc8bb139cb369464b1f6a2aa24058

2 files changed, 13 insertions, 1 deletions

diff --git a/core/jni/android/graphics/SurfaceTexture.cpp b/core/jni/android/graphics/SurfaceTexture.cpp
index 0d28cb179358..a8cb6f753565 100644
--- a/core/jni/android/graphics/SurfaceTexture.cpp
+++ b/core/jni/android/graphics/SurfaceTexture.cpp
@@ -212,6 +212,12 @@ static jlong SurfaceTexture_getTimestamp(JNIEnv* env, jobject thiz)
     return surfaceTexture->getTimestamp();
 }
 
+static jint SurfaceTexture_getQueuedCount(JNIEnv* env, jobject thiz)
+{
+    sp<SurfaceTexture> surfaceTexture(SurfaceTexture_getSurfaceTexture(env, thiz));
+    return surfaceTexture->getQueuedCount();
+}
+
 // ----------------------------------------------------------------------------
 
 static JNINativeMethod gSurfaceTextureMethods[] = {
@@ -221,7 +227,8 @@ static JNINativeMethod gSurfaceTextureMethods[] = {
     {"nativeSetDefaultBufferSize", "(II)V", (void*)SurfaceTexture_setDefaultBufferSize },
     {"nativeUpdateTexImage",     "()V",   (void*)SurfaceTexture_updateTexImage },
     {"nativeGetTransformMatrix", "([F)V", (void*)SurfaceTexture_getTransformMatrix },
-    {"nativeGetTimestamp",       "()J",   (void*)SurfaceTexture_getTimestamp }
+    {"nativeGetTimestamp",       "()J",   (void*)SurfaceTexture_getTimestamp },
+    {"nativeGetQueuedCount",     "()I",   (void*)SurfaceTexture_getQueuedCount }
 };
 
 int register_android_graphics_SurfaceTexture(JNIEnv* env)
diff --git a/graphics/java/android/graphics/SurfaceTexture.java b/graphics/java/android/graphics/SurfaceTexture.java
index 6c7341f7346a..9e498d0fea9c 100644
--- a/graphics/java/android/graphics/SurfaceTexture.java
+++ b/graphics/java/android/graphics/SurfaceTexture.java
@@ -131,6 +131,10 @@ public class SurfaceTexture {
      */
     public void updateTexImage() {
         nativeUpdateTexImage();
+        if (nativeGetQueuedCount() > 0) {
+            Message m = mEventHandler.obtainMessage();
+            mEventHandler.sendMessage(m);
+        }
     }
 
     /**
@@ -215,6 +219,7 @@ public class SurfaceTexture {
     private native long nativeGetTimestamp();
     private native void nativeSetDefaultBufferSize(int width, int height);
     private native void nativeUpdateTexImage();
+    private native int nativeGetQueuedCount();
 
     /*
      * We use a class initializer to allow the native code to cache some