Ozone integration.

ui/ozone/platform/drm/gpu/drm_device.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_GPU_DRM_DEVICE_H_
+#define UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_
+
+#include <stdint.h>
+
+#include <vector>
+
+#include "base/callback.h"
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_vector.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/rect_f.h"
+#include "ui/gfx/overlay_transform.h"
+#include "ui/ozone/ozone_export.h"
+#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
+#include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager.h"
+
+typedef struct _drmEventContext drmEventContext;
+typedef struct _drmModeModeInfo drmModeModeInfo;
+
+struct SkImageInfo;
+
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace ui {
+
+class HardwareDisplayPlaneManager;
+struct GammaRampRGBEntry;
+
+// Wraps DRM calls into a nice interface. Used to provide different
+// implementations of the DRM calls. For the actual implementation the DRM API
+// would be called. In unit tests this interface would be stubbed.
+class OZONE_EXPORT DrmDevice : public base::RefCountedThreadSafe<DrmDevice> {
+ public:
+  typedef base::Callback<void(unsigned int /* frame */,
+                              unsigned int /* seconds */,
+                              unsigned int /* useconds */)> PageFlipCallback;
+
+  DrmDevice(const base::FilePath& device_path, base::File file);
+
+  // Open device.
+  virtual bool Initialize(bool use_atomic);
+
+  // |task_runner| will be used to asynchronously page flip.
+  virtual void InitializeTaskRunner(
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
+
+  // Get the CRTC state. This is generally used to save state before using the
+  // CRTC. When the user finishes using the CRTC, the user should restore the
+  // CRTC to it's initial state. Use |SetCrtc| to restore the state.
+  virtual ScopedDrmCrtcPtr GetCrtc(uint32_t crtc_id);
+
+  // Used to configure CRTC with ID |crtc_id| to use the connector in
+  // |connectors|. The CRTC will be configured with mode |mode| and will display
+  // the framebuffer with ID |framebuffer|. Before being able to display the
+  // framebuffer, it should be registered with the CRTC using |AddFramebuffer|.
+  virtual bool SetCrtc(uint32_t crtc_id,
+                       uint32_t framebuffer,
+                       std::vector<uint32_t> connectors,
+                       drmModeModeInfo* mode);
+
+  // Used to set a specific configuration to the CRTC. Normally this function
+  // would be called with a CRTC saved state (from |GetCrtc|) to restore it to
+  // its original configuration.
+  virtual bool SetCrtc(drmModeCrtc* crtc, std::vector<uint32_t> connectors);
+
+  virtual bool DisableCrtc(uint32_t crtc_id);
+
+  // Returns the connector properties for |connector_id|.
+  virtual ScopedDrmConnectorPtr GetConnector(uint32_t connector_id);
+
+  // Register a buffer with the CRTC. On successful registration, the CRTC will
+  // assign a framebuffer ID to |framebuffer|.
+  virtual bool AddFramebuffer(uint32_t width,
+                              uint32_t height,
+                              uint8_t depth,
+                              uint8_t bpp,
+                              uint32_t stride,
+                              uint32_t handle,
+                              uint32_t* framebuffer);
+
+  // Deregister the given |framebuffer|.
+  virtual bool RemoveFramebuffer(uint32_t framebuffer);
+
+  // Get the DRM details associated with |framebuffer|.
+  virtual ScopedDrmFramebufferPtr GetFramebuffer(uint32_t framebuffer);
+
+  // Schedules a pageflip for CRTC |crtc_id|. This function will return
+  // immediately. Upon completion of the pageflip event, the CRTC will be
+  // displaying the buffer with ID |framebuffer| and will have a DRM event
+  // queued on |fd_|.
+  virtual bool PageFlip(uint32_t crtc_id,
+                        uint32_t framebuffer,
+                        bool is_sync,
+                        const PageFlipCallback& callback);
+
+  // Schedule an overlay to be show during the page flip for CRTC |crtc_id|.
+  // |source| location from |framebuffer| will be shown on overlay
+  // |overlay_plane|, in the bounds specified by |location| on the screen.
+  virtual bool PageFlipOverlay(uint32_t crtc_id,
+                               uint32_t framebuffer,
+                               const gfx::Rect& location,
+                               const gfx::Rect& source,
+                               int overlay_plane);
+
+  // Returns the property with name |name| associated with |connector|. Returns
+  // NULL if property not found. If the returned value is valid, it must be
+  // released using FreeProperty().
+  virtual ScopedDrmPropertyPtr GetProperty(drmModeConnector* connector,
+                                           const char* name);
+
+  // Sets the value of property with ID |property_id| to |value|. The property
+  // is applied to the connector with ID |connector_id|.
+  virtual bool SetProperty(uint32_t connector_id,
+                           uint32_t property_id,
+                           uint64_t value);
+
+  // Can be used to query device/driver |capability|. Sets the value of
+  // |capability to |value|. Returns true in case of a succesful query.
+  virtual bool GetCapability(uint64_t capability, uint64_t* value);
+
+  // Return a binary blob associated with |connector|. The binary blob is
+  // associated with the property with name |name|. Return NULL if the property
+  // could not be found or if the property does not have a binary blob. If valid
+  // the returned object must be freed using FreePropertyBlob().
+  virtual ScopedDrmPropertyBlobPtr GetPropertyBlob(drmModeConnector* connector,
+                                                   const char* name);
+
+  // Set the cursor to be displayed in CRTC |crtc_id|. (width, height) is the
+  // cursor size pointed by |handle|.
+  virtual bool SetCursor(uint32_t crtc_id,
+                         uint32_t handle,
+                         const gfx::Size& size);
+
+  // Move the cursor on CRTC |crtc_id| to (x, y);
+  virtual bool MoveCursor(uint32_t crtc_id, const gfx::Point& point);
+
+  virtual bool CreateDumbBuffer(const SkImageInfo& info,
+                                uint32_t* handle,
+                                uint32_t* stride);
+
+  virtual bool DestroyDumbBuffer(uint32_t handle);
+
+  virtual bool MapDumbBuffer(uint32_t handle, size_t size, void** pixels);
+
+  virtual bool UnmapDumbBuffer(void* pixels, size_t size);
+
+  virtual bool CloseBufferHandle(uint32_t handle);
+
+  virtual bool CommitProperties(drmModePropertySet* properties,
+                                uint32_t flags,
+                                bool is_sync,
+                                bool test_only,
+                                const PageFlipCallback& callback);
+
+  // Set the gamma ramp for |crtc_id| to reflect the ramps in |lut|.
+  virtual bool SetGammaRamp(uint32_t crtc_id,
+                            const std::vector<GammaRampRGBEntry>& lut);
+
+  virtual bool SetCapability(uint64_t capability, uint64_t value);
+
+  // Drm master related
+  virtual bool SetMaster();
+  virtual bool DropMaster();
+
+  int get_fd() const { return file_.GetPlatformFile(); }
+
+  base::FilePath device_path() const { return device_path_; }
+
+  HardwareDisplayPlaneManager* plane_manager() { return plane_manager_.get(); }
+
+ protected:
+  friend class base::RefCountedThreadSafe<DrmDevice>;
+
+  virtual ~DrmDevice();
+
+  scoped_ptr<HardwareDisplayPlaneManager> plane_manager_;
+
+ private:
+  class IOWatcher;
+  class PageFlipManager;
+
+  // Path to DRM device.
+  const base::FilePath device_path_;
+
+  // DRM device.
+  base::File file_;
+
+  // Helper thread to perform IO listener operations.
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+
+  // Watcher for |fd_| listening for page flip events.
+  scoped_refptr<IOWatcher> watcher_;
+
+  scoped_refptr<PageFlipManager> page_flip_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(DrmDevice);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_DEVICE_H_