GLImageEGL: add dmabuf queries

ui/gl/gl_image_egl.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gl_image_egl.h"
 
 #include "ui/gl/egl_util.h"
 #include "ui/gl/gl_surface_egl.h"
 
+#define MAX_FORMATS 100
+#define MAX_MODIFIERS 20
+#define DRM_FORMAT_MOD_NONE 0
+
 namespace gl {
 
 GLImageEGL::GLImageEGL(const gfx::Size& size)
     : egl_image_(EGL_NO_IMAGE_KHR), size_(size) {}
 
 GLImageEGL::~GLImageEGL() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (egl_image_ != EGL_NO_IMAGE_KHR) {
     EGLBoolean result =
         eglDestroyImageKHR(GLSurfaceEGL::GetHardwareDisplay(), egl_image_);
@@ skipping 12 matching lines @@
   egl_image_ = eglCreateImageKHR(GLSurfaceEGL::GetHardwareDisplay(),
                                  EGL_NO_CONTEXT, target, buffer, attrs);
   if (egl_image_ == EGL_NO_IMAGE_KHR) {
     DLOG(ERROR) << "Error creating EGLImage: " << ui::GetLastEGLErrorString();
     return false;
   }
 
   return true;
 }
 
+std::vector<std::pair<EGLint, EGLuint64KHR>>
+GLImageEGL::GetDmaBufFormatsWithModifiers() {
+  EGLDisplay dpy = GLSurfaceEGL::GetHardwareDisplay();
+  std::vector<std::pair<EGLint, EGLuint64KHR>> supported;
+  EGLint drm_formats[MAX_FORMATS];
+  EGLint num_formats = 0;
+
+  eglQueryDmaBufFormatsEXT(dpy, MAX_FORMATS, &drm_formats[0], &num_formats);
+
+  for (int i = 0; i < num_formats; i++) {
+    EGLuint64KHR drm_modifiers[MAX_MODIFIERS];
+    EGLint num_modifiers = 0;
+
+    eglQueryDmaBufModifiersEXT(dpy, drm_formats[i], MAX_MODIFIERS,
+                               &drm_modifiers[0], NULL, &num_modifiers);
+
+    if (num_modifiers == 0)
+      supported.push_back(std::make_pair(drm_formats[i], DRM_FORMAT_MOD_NONE));
+    for (int j = 0; j < num_modifiers; j++)
+      supported.push_back(std::make_pair(drm_formats[i], drm_modifiers[j]));
+  }
+  return supported;
+}
+
 gfx::Size GLImageEGL::GetSize() {
   return size_;
 }
 
 unsigned GLImageEGL::GetInternalFormat() { return GL_RGBA; }
 
 bool GLImageEGL::BindTexImage(unsigned target) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (egl_image_ == EGL_NO_IMAGE_KHR)
     return false;
@@ skipping 15 matching lines @@
 
 bool GLImageEGL::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                       int z_order,
                                       gfx::OverlayTransform transform,
                                       const gfx::Rect& bounds_rect,
                                       const gfx::RectF& crop_rect) {
   return false;
 }
 
 }  // namespace gl