/* 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