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Diffstat (limited to 'jni/jni_egl_fence.cpp')
-rw-r--r-- | jni/jni_egl_fence.cpp | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/jni/jni_egl_fence.cpp b/jni/jni_egl_fence.cpp new file mode 100644 index 000000000..cf15e2f5d --- /dev/null +++ b/jni/jni_egl_fence.cpp @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "jni_egl_fence.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 = FuncEglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL); + if (fence == EGL_NO_SYNC_KHR) { + return; + } + + 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()); + } + FuncEglDestroySyncKHR(display, fence); +} |