[Ozone] Rename and split the DRI platform for clarity

This CL does the following:
 - Moves the files in ui/ozone/platform/dri to ui/ozone/platform/drm
   since the platform name should really be DRM rather than DRI. Note,
   that the platform is still refered to as "dri" in GYP/GN since CrOS
   builds are still using the 'dri' name.
 - Rename all files with a "_dri*" suffix to a "drm_" prefix. Also
   rename all files with a "dri_" prefix to a "drm_" prefix.
 - Rename NativeDisplayDelegateDri to DrmDisplayDelegateManager since it
   is no longer dependent on the NativeDisplayDelegate interface and the
   new name better describes its intent.
 - Split the files in the platform into 2 sub-folders ("host" and
   "gpu"). Depending on the intended use place of the objects (Browser
   (host) process or GPU process) the files in the platform are split
   accordingly in the 2 sub-folders.

BUG=none
TBR=jam@chromium.org

Review URL: https://codereview.chromium.org/975063002

Cr-Commit-Position: refs/heads/master@{#319320}

1 files changed, 74 insertions, 0 deletions

diff --git a/ui/ozone/platform/drm/gpu/drm_buffer.h b/ui/ozone/platform/drm/gpu/drm_buffer.h
new file mode 100644
index 0000000..18ad9af
--- /dev/null
+++ b/ui/ozone/platform/drm/gpu/drm_buffer.h
@@ -0,0 +1,74 @@
+// 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_BUFFER_H_
+#define UI_OZONE_PLATFORM_DRM_GPU_DRM_BUFFER_H_
+
+#include "base/macros.h"
+#include "skia/ext/refptr.h"
+#include "third_party/skia/include/core/SkSurface.h"
+#include "ui/ozone/ozone_export.h"
+#include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
+
+namespace ui {
+
+class DrmDevice;
+
+// Wrapper for a DRM allocated buffer. Keeps track of the native properties of
+// the buffer and wraps the pixel memory into a SkSurface which can be used to
+// draw into using Skia.
+class OZONE_EXPORT DrmBuffer : public ScanoutBuffer {
+ public:
+  DrmBuffer(const scoped_refptr<DrmDevice>& drm);
+
+  // Allocates the backing pixels and wraps them in |surface_|. |info| is used
+  // to describe the buffer characteristics (size, color format).
+  // |should_register_framebuffer| is used to distinguish the buffers that are
+  // used for modesetting.
+  bool Initialize(const SkImageInfo& info, bool should_register_framebuffer);
+
+  SkCanvas* GetCanvas() const;
+
+  // ScanoutBuffer:
+  uint32_t GetFramebufferId() const override;
+  uint32_t GetHandle() const override;
+  gfx::Size GetSize() const override;
+
+ protected:
+  ~DrmBuffer() override;
+
+  scoped_refptr<DrmDevice> drm_;
+
+  // Wrapper around the native pixel memory.
+  skia::RefPtr<SkSurface> surface_;
+
+  // Length of a row of pixels.
+  uint32_t stride_;
+
+  // Buffer handle used by the DRM allocator.
+  uint32_t handle_;
+
+  // Buffer ID used by the DRM modesettings API. This is set when the buffer is
+  // registered with the CRTC.
+  uint32_t framebuffer_;
+
+  DISALLOW_COPY_AND_ASSIGN(DrmBuffer);
+};
+
+class OZONE_EXPORT DrmBufferGenerator : public ScanoutBufferGenerator {
+ public:
+  DrmBufferGenerator();
+  ~DrmBufferGenerator() override;
+
+  // ScanoutBufferGenerator:
+  scoped_refptr<ScanoutBuffer> Create(const scoped_refptr<DrmDevice>& drm,
+                                      const gfx::Size& size) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DrmBufferGenerator);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_DRM_GPU_DRM_BUFFER_H_