ui/ozone/platform/drm/gpu/gbm_buffer_base.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_BASE_H_
   6 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_BASE_H_
   7
   8 #include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
   9
  10 struct gbm_bo;
  11
  12 namespace ui {
  13
  14 class DrmDevice;
  15
  16 // Wrapper for a GBM buffer. The base class provides common functionality
  17 // required to prepare the buffer for scanout. It does not provide any ownership
  18 // of the buffer. Implementations of this base class should deal with buffer
  19 // ownership.
  20 class GbmBufferBase : public ScanoutBuffer {
  21  public:
  22   gbm_bo* bo() const { return bo_; }
  23
  24   // ScanoutBuffer:
  25   uint32_t GetFramebufferId() const override;
  26   uint32_t GetHandle() const override;
  27   gfx::Size GetSize() const override;
  28   uint32_t GetFramebufferPixelFormat() const override;
  29
  30  protected:
  31   GbmBufferBase(const scoped_refptr<DrmDevice>& drm, gbm_bo* bo, bool scanout);
  32   ~GbmBufferBase() override;
  33
  34  private:
  35   scoped_refptr<DrmDevice> drm_;
  36   gbm_bo* bo_;
  37   uint32_t framebuffer_ = 0;
  38   uint32_t fb_pixel_format_ = 0;
  39
  40   DISALLOW_COPY_AND_ASSIGN(GbmBufferBase);
  41 };
  42
  43 }  // namespace ui
  44
  45 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_BASE_H_