[Ozone-GBM] Migrate GBM buffers to use the ScanoutBuffer interface

ui/ozone/platform/dri/gbm_buffer_base.cc

Index: ui/ozone/platform/dri/gbm_buffer_base.cc
diff --git a/ui/ozone/platform/dri/gbm_buffer_base.cc b/ui/ozone/platform/dri/gbm_buffer_base.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f5c057af381d6d9fc3f5a5ddf7ed11c2af068295
--- /dev/null
+++ b/ui/ozone/platform/dri/gbm_buffer_base.cc
@@ -0,0 +1,53 @@
+// 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/dri/gbm_buffer_base.h"
+
+#include <gbm.h>
+
+#include "base/logging.h"
+#include "ui/ozone/platform/dri/dri_wrapper.h"
+
+namespace ui {
+
+namespace {
+
+// Pixel configuration for the current buffer format.
+// TODO(dnicoara) These will need to change once we query the hardware for
+// supported configurations.
+const uint8_t kColorDepth = 24;
+const uint8_t kPixelDepth = 32;
+
+}  // namespace
+
+GbmBufferBase::GbmBufferBase(DriWrapper* dri, gbm_bo* bo, bool scanout)
+    : dri_(dri), bo_(bo), framebuffer_(0) {
+  if (scanout && !dri_->AddFramebuffer(gbm_bo_get_width(bo),
+                                       gbm_bo_get_height(bo),
+                                       kColorDepth,
+                                       kPixelDepth,
+                                       gbm_bo_get_stride(bo),
+                                       gbm_bo_get_handle(bo).u32,
+                                       &framebuffer_))
+    LOG(ERROR) << "Failed to register buffer";
+}
+
+GbmBufferBase::~GbmBufferBase() {
+  if (framebuffer_)
+    dri_->RemoveFramebuffer(framebuffer_);
+}
+
+uint32_t GbmBufferBase::GetFramebufferId() const {
+  return framebuffer_;
+}
+
+uint32_t GbmBufferBase::GetHandle() const {
+  return gbm_bo_get_handle(bo_).u32;
+}
+
+gfx::Size GbmBufferBase::GetSize() const {
+  return gfx::Size(gbm_bo_get_width(bo_), gbm_bo_get_height(bo_));
+}
+
+}  // namespace ui