1 files changed, 53 insertions, 0 deletions
diff --git a/gfx/layers/opengl/EGLImageHelpers.cpp b/gfx/layers/opengl/EGLImageHelpers.cpp
new file mode 100644
index 000000000..4a720302f
--- /dev/null
+++ b/gfx/layers/opengl/EGLImageHelpers.cpp
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "EGLImageHelpers.h"
+#include "GLContext.h"
+#include "GLLibraryEGL.h"
+
+namespace mozilla
+{
+namespace layers {
+
+using namespace gl;
+
+EGLImage
+EGLImageCreateFromNativeBuffer(GLContext* aGL, void* aBuffer, const gfx::IntSize& aCropSize)
+{
+    EGLint attrs[] = {
+        LOCAL_EGL_IMAGE_PRESERVED, LOCAL_EGL_TRUE,
+        LOCAL_EGL_NONE, LOCAL_EGL_NONE,
+    };
+
+    EGLint cropAttrs[] = {
+        LOCAL_EGL_IMAGE_PRESERVED, LOCAL_EGL_TRUE,
+        LOCAL_EGL_IMAGE_CROP_LEFT_ANDROID, 0,
+        LOCAL_EGL_IMAGE_CROP_TOP_ANDROID, 0,
+        LOCAL_EGL_IMAGE_CROP_RIGHT_ANDROID, aCropSize.width,
+        LOCAL_EGL_IMAGE_CROP_BOTTOM_ANDROID, aCropSize.height,
+        LOCAL_EGL_NONE, LOCAL_EGL_NONE,
+    };
+
+    bool hasCropRect = (aCropSize.width != 0 && aCropSize.height != 0);
+    EGLint* usedAttrs = attrs;
+    if (hasCropRect && sEGLLibrary.IsExtensionSupported(GLLibraryEGL::EGL_ANDROID_image_crop)) {
+        usedAttrs = cropAttrs;
+    }
+
+    return sEGLLibrary.fCreateImage(sEGLLibrary.Display(),
+                                     EGL_NO_CONTEXT,
+                                     LOCAL_EGL_NATIVE_BUFFER_ANDROID,
+                                     aBuffer, usedAttrs);
+}
+
+void
+EGLImageDestroy(GLContext* aGL, EGLImage aImage)
+{
+    sEGLLibrary.fDestroyImage(sEGLLibrary.Display(), aImage);
+}
+
+} // namespace layers
+} // namespace mozilla