blob: 7e788928f69eb4cc0bb356faed55a090cf1811d2 [file] [log] [blame]
/*
* 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) {
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) {
(void)env;
(void)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);
}