1 files changed, 38 insertions, 4 deletions

diff --git a/jni/jni_egl_fence.cpp b/jni/jni_egl_fence.cpp
index 8d557df31..cf15e2f5d 100644
--- a/jni/jni_egl_fence.cpp
+++ b/jni/jni_egl_fence.cpp
@@ -16,29 +16,63 @@
 
 #include "jni_egl_fence.h"
 
-#include <cutils/log.h>
+#include <android/log.h>
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+#include <string.h>
+
+#define  ALOGE(...)  __android_log_print(ANDROID_LOG_ERROR,"egl_fence",__VA_ARGS__)
+
+typedef EGLSyncKHR EGLAPIENTRY (*TypeEglCreateSyncKHR)(EGLDisplay dpy,
+    EGLenum type, const EGLint *attrib_list);
+typedef EGLBoolean EGLAPIENTRY (*TypeEglDestroySyncKHR)(EGLDisplay dpy,
+    EGLSyncKHR sync);
+typedef EGLint EGLAPIENTRY (*TypeEglClientWaitSyncKHR)(EGLDisplay dpy,
+    EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout);
+static TypeEglCreateSyncKHR FuncEglCreateSyncKHR = NULL;
+static TypeEglClientWaitSyncKHR FuncEglClientWaitSyncKHR = NULL;
+static TypeEglDestroySyncKHR FuncEglDestroySyncKHR = NULL;
+static bool initialized = false;
+static bool egl_khr_fence_sync_supported = false;
+
+bool IsEglKHRFenceSyncSupported() {
+  if (!initialized) {
+    EGLDisplay display = eglGetCurrentDisplay();
+    const char* eglExtensions = eglQueryString(eglGetCurrentDisplay(), EGL_EXTENSIONS);
+    if (eglExtensions && strstr(eglExtensions, "EGL_KHR_fence_sync")) {
+      FuncEglCreateSyncKHR = (TypeEglCreateSyncKHR) eglGetProcAddress("eglCreateSyncKHR");
+      FuncEglClientWaitSyncKHR = (TypeEglClientWaitSyncKHR) eglGetProcAddress("eglClientWaitSyncKHR");
+      FuncEglDestroySyncKHR = (TypeEglDestroySyncKHR) eglGetProcAddress("eglDestroySyncKHR");
+      if (FuncEglCreateSyncKHR != NULL && FuncEglClientWaitSyncKHR != NULL
+          && FuncEglDestroySyncKHR != NULL) {
+        egl_khr_fence_sync_supported = true;
+      }
+    }
+    initialized = true;
+  }
+  return egl_khr_fence_sync_supported;
+}
 
 void
 Java_com_android_gallery3d_photoeditor_FilterStack_nativeEglSetFenceAndWait(JNIEnv* env,
                                                                           jobject thiz) {
+  if (!IsEglKHRFenceSyncSupported()) return;
   EGLDisplay display = eglGetCurrentDisplay();
 
   // Create a egl fence and wait for egl to return it.
   // Additional reference on egl fence sync can be found in:
   // http://www.khronos.org/registry/vg/extensions/KHR/EGL_KHR_fence_sync.txt
-  EGLSyncKHR fence = eglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL);
+  EGLSyncKHR fence = FuncEglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL);
   if (fence == EGL_NO_SYNC_KHR) {
     return;
   }
 
-  EGLint result = eglClientWaitSyncKHR(display,
+  EGLint result = FuncEglClientWaitSyncKHR(display,
                                        fence,
                                        EGL_SYNC_FLUSH_COMMANDS_BIT_KHR,
                                        EGL_FOREVER_KHR);
   if (result == EGL_FALSE) {
     ALOGE("EGL FENCE: error waiting for fence: %#x", eglGetError());
   }
-  eglDestroySyncKHR(display, fence);
+  FuncEglDestroySyncKHR(display, fence);
 }