Ozone integration.

ui/ozone/platform/drm/gpu/drm_console_buffer.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/drm_console_buffer.h"
+
+#include <sys/mman.h>
+#include <xf86drmMode.h>
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
+#include "ui/ozone/platform/drm/gpu/drm_device.h"
+
+namespace ui {
+
+DrmConsoleBuffer::DrmConsoleBuffer(const scoped_refptr<DrmDevice>& drm,
+                                   uint32_t framebuffer)
+    : drm_(drm), framebuffer_(framebuffer) {
+}
+
+DrmConsoleBuffer::~DrmConsoleBuffer() {
+  if (mmap_base_)
+    if (munmap(mmap_base_, mmap_size_))
+      PLOG(ERROR) << "munmap";
+
+  if (handle_ && !drm_->CloseBufferHandle(handle_))
+    PLOG(ERROR) << "DrmConsoleBuffer: CloseBufferHandle: handle " << handle_;
+}
+
+bool DrmConsoleBuffer::Initialize() {
+  ScopedDrmFramebufferPtr fb(drm_->GetFramebuffer(framebuffer_));
+
+  if (!fb)
+    return false;
+
+  handle_ = fb->handle;
+  stride_ = fb->pitch;
+  SkImageInfo info = SkImageInfo::MakeN32Premul(fb->width, fb->height);
+
+  mmap_size_ = info.getSafeSize(stride_);
+
+  if (!drm_->MapDumbBuffer(fb->handle, mmap_size_, &mmap_base_)) {
+    mmap_base_ = NULL;
+    return false;
+  }
+
+  surface_ =
+      skia::AdoptRef(SkSurface::NewRasterDirect(info, mmap_base_, stride_));
+  if (!surface_)
+    return false;
+
+  return true;
+}
+
+}  // namespace ui