Ozone integration.

ui/ozone/platform/drm/common/drm_util.h

+// Copyright 2014 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.
+
+#ifndef UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_
+#define UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_
+
+#include "base/files/file_path.h"
+#include "base/macros.h"
+#include "base/memory/scoped_vector.h"
+#include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
+#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
+
+typedef struct _drmModeModeInfo drmModeModeInfo;
+
+namespace gfx {
+class Point;
+}
+
+namespace ui {
+
+// Representation of the information required to initialize and configure a
+// native display.
+class HardwareDisplayControllerInfo {
+ public:
+  HardwareDisplayControllerInfo(ScopedDrmConnectorPtr connector,
+                                ScopedDrmCrtcPtr crtc);
+  ~HardwareDisplayControllerInfo();
+
+  drmModeConnector* connector() const { return connector_.get(); }
+  drmModeCrtc* crtc() const { return crtc_.get(); }
+
+ private:
+  ScopedDrmConnectorPtr connector_;
+  ScopedDrmCrtcPtr crtc_;
+
+  DISALLOW_COPY_AND_ASSIGN(HardwareDisplayControllerInfo);
+};
+
+// Looks-up and parses the native display configurations returning all available
+// displays.
+ScopedVector<HardwareDisplayControllerInfo> GetAvailableDisplayControllerInfos(
+    int fd);
+
+bool SameMode(const drmModeModeInfo& lhs, const drmModeModeInfo& rhs);
+
+DisplayMode_Params CreateDisplayModeParams(const drmModeModeInfo& mode);
+
+// |info| provides the DRM information related to the display, |fd| is the
+// connection to the DRM device and |index| provides a unique identifier for the
+// display. |index| will be used to generate the display id (it may be the id if
+// the monitor's EDID lacks the necessary identifiers).
+DisplaySnapshot_Params CreateDisplaySnapshotParams(
+    HardwareDisplayControllerInfo* info,
+    int fd,
+    size_t display_index,
+    const gfx::Point& origin);
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_