surfaceflinger: add image abstraction to RenderEngine
Similar to Surface, Image manages the creation and destruction of an
EGLImageKHR.
Test: builds
Change-Id: I2ca98e99013f0a4028f0ea5036f37b20fd67d956
diff --git a/services/surfaceflinger/RenderEngine/Image.cpp b/services/surfaceflinger/RenderEngine/Image.cpp
new file mode 100644
index 0000000..1f8e75a
--- /dev/null
+++ b/services/surfaceflinger/RenderEngine/Image.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2017 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 "Image.h"
+
+#include <vector>
+
+#include <log/log.h>
+
+#include "GLExtensions.h"
+#include "RenderEngine.h"
+
+namespace android {
+namespace RE {
+
+Image::Image(const RenderEngine& engine) : mEGLDisplay(engine.getEGLDisplay()) {}
+
+Image::~Image() {
+ setNativeWindowBuffer(nullptr, false, 0, 0);
+}
+
+static std::vector<EGLint> buildAttributeList(bool isProtected, int32_t cropWidth,
+ int32_t cropHeight) {
+ std::vector<EGLint> attrs;
+ attrs.reserve(16);
+
+ attrs.push_back(EGL_IMAGE_PRESERVED_KHR);
+ attrs.push_back(EGL_TRUE);
+
+ if (isProtected && GLExtensions::getInstance().hasProtectedContent()) {
+ attrs.push_back(EGL_PROTECTED_CONTENT_EXT);
+ attrs.push_back(EGL_TRUE);
+ }
+
+ if (cropWidth > 0 && cropHeight > 0) {
+ attrs.push_back(EGL_IMAGE_CROP_LEFT_ANDROID);
+ attrs.push_back(0);
+ attrs.push_back(EGL_IMAGE_CROP_TOP_ANDROID);
+ attrs.push_back(0);
+ attrs.push_back(EGL_IMAGE_CROP_RIGHT_ANDROID);
+ attrs.push_back(cropWidth);
+ attrs.push_back(EGL_IMAGE_CROP_BOTTOM_ANDROID);
+ attrs.push_back(cropHeight);
+ }
+
+ attrs.push_back(EGL_NONE);
+
+ return attrs;
+}
+
+bool Image::setNativeWindowBuffer(ANativeWindowBuffer* buffer, bool isProtected, int32_t cropWidth,
+ int32_t cropHeight) {
+ if (mEGLImage != EGL_NO_IMAGE_KHR) {
+ if (!eglDestroyImageKHR(mEGLDisplay, mEGLImage)) {
+ ALOGE("failed to destroy image: %#x", eglGetError());
+ }
+ mEGLImage = EGL_NO_IMAGE_KHR;
+ }
+
+ if (buffer) {
+ std::vector<EGLint> attrs = buildAttributeList(isProtected, cropWidth, cropHeight);
+ mEGLImage = eglCreateImageKHR(mEGLDisplay, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+ static_cast<EGLClientBuffer>(buffer), attrs.data());
+ if (mEGLImage == EGL_NO_IMAGE_KHR) {
+ ALOGE("failed to create EGLImage: %#x", eglGetError());
+ return false;
+ }
+ }
+
+ return true;
+}
+
+} // namespace RE
+} // namespace android