ozone: Allocate scanout buffer according to KMS modifiers

ui/ozone/platform/drm/gpu/hardware_display_plane.h

Index: ui/ozone/platform/drm/gpu/hardware_display_plane.h
diff --git a/ui/ozone/platform/drm/gpu/hardware_display_plane.h b/ui/ozone/platform/drm/gpu/hardware_display_plane.h
index a7b23f4d1d4a85622ebe00b13281100c0d723cb3..629b7450b65d2e47cd3d6bdc86587463675d4e53 100644
--- a/ui/ozone/platform/drm/gpu/hardware_display_plane.h
+++ b/ui/ozone/platform/drm/gpu/hardware_display_plane.h
@@ -13,6 +13,8 @@
 #include "base/macros.h"
 #include "ui/ozone/platform/drm/common/scoped_drm_types.h"
 
+struct drm_format_info;
+
 namespace ui {
 
 class DrmDevice;
@@ -27,11 +29,14 @@ class HardwareDisplayPlane {
 
   bool Initialize(DrmDevice* drm,
                   const std::vector<uint32_t>& formats,
+		  const std::vector<struct drm_format_info>& format_info,

[Daniele Castagna, 2016/12/16 00:27:41]

I don't think struct is necessary here.

[hoegsberg1, 2016/12/17 01:10:49]

Acknowledged.

                   bool is_dummy,
                   bool test_only);
 
   bool IsSupportedFormat(uint32_t format);
 
+  uint32_t ModifiersForFormat(uint32_t format, uint64_t *modifiers, uint32_t count);
+
   bool CanUseForCrtc(uint32_t crtc_index);
 
   bool in_use() const { return in_use_; }
@@ -58,6 +63,7 @@ class HardwareDisplayPlane {
   bool in_use_ = false;
   Type type_ = kPrimary;
   std::vector<uint32_t> supported_formats_;
+  std::vector<struct drm_format_info> supported_format_info_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayPlane);
 };