[Ozone-DRI] Migrate cursor to using ScanoutBuffer

BUG=none
NOTRY=true

Review URL: https://codereview.chromium.org/407603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284176 0039d316-1c4b-4281-b951-d872f2087c98

ui/ozone/platform/dri/dri_surface_factory.cc

@@ -12,6 +12,7 @@
 #include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkSurface.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/platform/dri/dri_buffer.h"
 #include "ui/ozone/platform/dri/dri_surface.h"
 #include "ui/ozone/platform/dri/dri_util.h"
 #include "ui/ozone/platform/dri/dri_vsync_provider.h"
@@ -27,12 +28,12 @@ namespace {
 // TODO(dnicoara) Read the cursor plane size from the hardware.
 const gfx::Size kCursorSize(64, 64);
 
-void UpdateCursorImage(DriSurface* cursor, const SkBitmap& image) {
+void UpdateCursorImage(DriBuffer* cursor, const SkBitmap& image) {
   SkRect damage;
   image.getBounds(&damage);
 
   // Clear to transparent in case |image| is smaller than the canvas.
-  SkCanvas* canvas = cursor->GetDrawableForWidget();
+  SkCanvas* canvas = cursor->GetCanvas();
   canvas->clear(SK_ColorTRANSPARENT);
 
   SkRect clip;
@@ -120,7 +121,8 @@ DriSurfaceFactory::DriSurfaceFactory(DriWrapper* drm,
     : drm_(drm),
       screen_manager_(screen_manager),
       state_(UNINITIALIZED),
-      allocated_widgets_(0) {
+      allocated_widgets_(0),
+      cursor_frontbuffer_(0) {
 }
 
 DriSurfaceFactory::~DriSurfaceFactory() {
@@ -138,11 +140,15 @@ ui::SurfaceFactoryOzone::HardwareState DriSurfaceFactory::InitializeHardware() {
     return state_;
   }
 
-  cursor_surface_.reset(CreateSurface(kCursorSize));
-  if (!cursor_surface_->Initialize()) {
-    LOG(ERROR) << "Failed to initialize cursor surface";
-    state_ = FAILED;
-    return state_;
+  SkImageInfo info = SkImageInfo::MakeN32Premul(kCursorSize.width(),
+                                                kCursorSize.height());
+  for (size_t i = 0; i < arraysize(cursor_buffers_); ++i) {
+    cursor_buffers_[i] = new DriBuffer(drm_);
+    if (!cursor_buffers_[i]->Initialize(info)) {
+      LOG(ERROR) << "Failed to initialize cursor buffer";
+      state_ = FAILED;
+      return state_;
+    }
   }
 
   state_ = INITIALIZED;
@@ -216,22 +222,20 @@ void DriSurfaceFactory::MoveHardwareCursor(gfx::AcceleratedWidget window,
 ////////////////////////////////////////////////////////////////////////////////
 // DriSurfaceFactory private
 
-DriSurface* DriSurfaceFactory::CreateSurface(const gfx::Size& size) {
-  return new DriSurface(drm_, size);
-}
-
 void DriSurfaceFactory::ResetCursor(gfx::AcceleratedWidget w) {
   base::WeakPtr<HardwareDisplayController> controller =
       screen_manager_->GetDisplayController(w);
 
   if (!cursor_bitmap_.empty()) {
     // Draw new cursor into backbuffer.
-    UpdateCursorImage(cursor_surface_.get(), cursor_bitmap_);
+    UpdateCursorImage(cursor_buffers_[cursor_frontbuffer_ ^ 1].get(),
+                      cursor_bitmap_);
 
     // Reset location & buffer.
     if (controller) {
       controller->MoveCursor(cursor_location_);
-      controller->SetCursor(cursor_surface_.get());
+      controller->SetCursor(cursor_buffers_[cursor_frontbuffer_ ^ 1]);
+      cursor_frontbuffer_ ^= 1;
     }
   } else {
     // No cursor set.

ui/ozone/platform/dri/dri_surface_factory.h

@@ -14,7 +14,7 @@
 
 namespace ui {
 
-class DriSurface;
+class DriBuffer;
 class DriWrapper;
 class HardwareDisplayController;
 class ScreenManager;
@@ -57,8 +57,6 @@ class DriSurfaceFactory : public ui::SurfaceFactoryOzone,
   // Draw the last set cursor & update the cursor plane.
   void ResetCursor(gfx::AcceleratedWidget w);
 
-  virtual DriSurface* CreateSurface(const gfx::Size& size);
-
   DriWrapper* drm_;  // Not owned.
   ScreenManager* screen_manager_;  // Not owned.
   HardwareState state_;
@@ -66,7 +64,8 @@ class DriSurfaceFactory : public ui::SurfaceFactoryOzone,
   // Active outputs.
   int allocated_widgets_;
 
-  scoped_ptr<DriSurface> cursor_surface_;
+  scoped_refptr<DriBuffer> cursor_buffers_[2];
+  int cursor_frontbuffer_;
 
   SkBitmap cursor_bitmap_;
   gfx::Point cursor_location_;

ui/ozone/platform/dri/dri_wrapper.cc

@@ -198,15 +198,14 @@ ScopedDrmPropertyBlobPtr DriWrapper::GetPropertyBlob(
 
 bool DriWrapper::SetCursor(uint32_t crtc_id,
                            uint32_t handle,
-                           uint32_t width,
-                           uint32_t height) {
+                           const gfx::Size& size) {
   CHECK(fd_ >= 0);
-  return !drmModeSetCursor(fd_, crtc_id, handle, width, height);
+  return !drmModeSetCursor(fd_, crtc_id, handle, size.width(), size.height());
 }
 
-bool DriWrapper::MoveCursor(uint32_t crtc_id, int x, int y) {
+bool DriWrapper::MoveCursor(uint32_t crtc_id, const gfx::Point& point) {
   CHECK(fd_ >= 0);
-  return !drmModeMoveCursor(fd_, crtc_id, x, y);
+  return !drmModeMoveCursor(fd_, crtc_id, point.x(), point.y());
 }
 
 void DriWrapper::HandleEvent(drmEventContext& event) {

ui/ozone/platform/dri/dri_wrapper.h

@@ -104,12 +104,11 @@ class DriWrapper {
   // cursor size pointed by |handle|.
   virtual bool SetCursor(uint32_t crtc_id,
                          uint32_t handle,
-                         uint32_t width,
-                         uint32_t height);
+                         const gfx::Size& size);
 
 
   // Move the cursor on CRTC |crtc_id| to (x, y);
-  virtual bool MoveCursor(uint32_t crtc_id, int x, int y);
+  virtual bool MoveCursor(uint32_t crtc_id, const gfx::Point& point);
 
   virtual void HandleEvent(drmEventContext& event);
 

ui/ozone/platform/dri/hardware_display_controller.cc

@@ -202,24 +202,24 @@ void HardwareDisplayController::OnPageFlipEvent(unsigned int frame,
   surface_->SwapBuffers();
 }
 
-bool HardwareDisplayController::SetCursor(ScanoutSurface* surface) {
+bool HardwareDisplayController::SetCursor(scoped_refptr<ScanoutBuffer> buffer) {
   bool ret = drm_->SetCursor(crtc_id_,
-                             surface->GetHandle(),
-                             surface->Size().width(),
-                             surface->Size().height());
-  surface->SwapBuffers();
+                             buffer->GetHandle(),
+                             buffer->GetSize());
+  cursor_buffer_ = buffer;
   return ret;
 }
 
 bool HardwareDisplayController::UnsetCursor() {
-  return drm_->SetCursor(crtc_id_, 0, 0, 0);
+  cursor_buffer_ = NULL;
+  return drm_->SetCursor(crtc_id_, 0, gfx::Size());
 }
 
 bool HardwareDisplayController::MoveCursor(const gfx::Point& location) {
   if (is_disabled_)
     return true;
 
-  return drm_->MoveCursor(crtc_id_, location.x(), location.y());
+  return drm_->MoveCursor(crtc_id_, location);
 }
 
 }  // namespace ui

ui/ozone/platform/dri/hardware_display_controller.h

@@ -22,6 +22,7 @@ class Point;
 namespace ui {
 
 class NativePixmap;
+class ScanoutBuffer;
 class ScanoutSurface;
 
 typedef std::vector<scoped_refptr<NativePixmap> > NativePixmapList;
@@ -150,7 +151,7 @@ class HardwareDisplayController
                        unsigned int useconds);
 
   // Set the hardware cursor to show the contents of |surface|.
-  bool SetCursor(ScanoutSurface* surface);
+  bool SetCursor(scoped_refptr<ScanoutBuffer> buffer);
 
   bool UnsetCursor();
 
@@ -187,6 +188,8 @@ class HardwareDisplayController
 
   scoped_ptr<ScanoutSurface> surface_;
 
+  scoped_refptr<ScanoutBuffer> cursor_buffer_;
+
   uint64_t time_of_last_flip_;
 
   // Keeps track of the CRTC state. If a surface has been bound, then the value

ui/ozone/platform/dri/test/mock_dri_wrapper.cc

@@ -110,12 +110,11 @@ ScopedDrmPropertyBlobPtr MockDriWrapper::GetPropertyBlob(
 
 bool MockDriWrapper::SetCursor(uint32_t crtc_id,
                                uint32_t handle,
-                               uint32_t width,
-                               uint32_t height) {
+                               const gfx::Size& size) {
   return true;
 }
 
-bool MockDriWrapper::MoveCursor(uint32_t crtc_id, int x, int y) {
+bool MockDriWrapper::MoveCursor(uint32_t crtc_id, const gfx::Point& point) {
   return true;
 }
 

ui/ozone/platform/dri/test/mock_dri_wrapper.h

@@ -75,9 +75,8 @@ class MockDriWrapper : public ui::DriWrapper {
                                                    const char* name) OVERRIDE;
   virtual bool SetCursor(uint32_t crtc_id,
                          uint32_t handle,
-                         uint32_t width,
-                         uint32_t height) OVERRIDE;
-  virtual bool MoveCursor(uint32_t crtc_id, int x, int y) OVERRIDE;
+                         const gfx::Size& size) OVERRIDE;
+  virtual bool MoveCursor(uint32_t crtc_id, const gfx::Point& point) OVERRIDE;
   virtual void HandleEvent(drmEventContext& event) OVERRIDE;
   virtual bool CreateDumbBuffer(const SkImageInfo& info,
                                 uint32_t* handle,