Ozone: Dont hardcode format to YUV when using Overlay Composition.

ui/ozone/platform/drm/gpu/hardware_display_controller.cc

 // 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.
 
 #include "ui/ozone/platform/drm/gpu/hardware_display_controller.h"
 
 #include <drm.h>
 #include <string.h>
 #include <xf86drm.h>
 
@@ skipping 138 matching lines @@
     // plane.
     if (crtc_controllers_[i]->GetCompatibleHardwarePlaneIds(plane).empty())
       return std::vector<uint32_t>();
   }
 
   // TODO(kalyank): We Should ensure that this list doesn't contain any planes
   // which mirrored displays share with primary.
   return plane_ids;
 }
 
+bool HardwareDisplayController::IsFormatSupported(uint32_t fourcc_format,
+                                                  uint32_t z_order) const {
+  if (!crtc_controllers_[0]->IsFormatSupported(fourcc_format, z_order))

[dnicoara, 2015/11/09 20:53:23]

This can be handled in the for-loop.

+    return false;
+
+  for (size_t i = 1; i < crtc_controllers_.size(); ++i) {
+    // Make sure all mirrored displays have overlays to support this
+    // plane.
+    if (!crtc_controllers_[i]->IsFormatSupported(fourcc_format, z_order))
+      return false;
+  }
+
+  return true;
+}
+
 bool HardwareDisplayController::SetCursor(
     const scoped_refptr<ScanoutBuffer>& buffer) {
   bool status = true;
 
   if (is_disabled_)
     return true;
 
   for (size_t i = 0; i < crtc_controllers_.size(); ++i)
     status &= crtc_controllers_[i]->SetCursor(buffer);
 
@@ skipping 111 matching lines @@
 
 scoped_refptr<DrmDevice> HardwareDisplayController::GetAllocationDrmDevice()
     const {
   DCHECK(!crtc_controllers_.empty());
   // TODO(dnicoara) When we support mirroring across DRM devices, figure out
   // which device should be used for allocations.
   return crtc_controllers_[0]->drm();
 }
 
 }  // namespace ui