1 files changed, 58 insertions, 0 deletions
diff --git a/gfx/layers/opengl/EGLImageHelpers.cpp b/gfx/layers/opengl/EGLImageHelpers.cpp
new file mode 100644
index 0000000000..a5abfe449f
--- /dev/null
+++ b/gfx/layers/opengl/EGLImageHelpers.cpp
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 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,
+  };
+
+  auto* egl = gl::GLLibraryEGL::Get();
+  bool hasCropRect = (aCropSize.width != 0 && aCropSize.height != 0);
+  EGLint* usedAttrs = attrs;
+  if (hasCropRect &&
+      egl->IsExtensionSupported(GLLibraryEGL::EGL_ANDROID_image_crop)) {
+    usedAttrs = cropAttrs;
+  }
+
+  return egl->fCreateImage(egl->Display(), EGL_NO_CONTEXT,
+                           LOCAL_EGL_NATIVE_BUFFER_ANDROID, aBuffer, usedAttrs);
+}
+
+void EGLImageDestroy(GLContext* aGL, EGLImage aImage) {
+  auto* egl = gl::GLLibraryEGL::Get();
+  egl->fDestroyImage(egl->Display(), aImage);
+}
+
+}  // namespace layers
+}  // namespace mozilla