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

   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 #include "ui/ozone/platform/drm/gpu/gbm_buffer_base.h"
   6
   7 #include <gbm.h>
   8
   9 #include "base/logging.h"
  10 #include "ui/ozone/platform/drm/gpu/drm_device.h"
  11
  12 namespace ui {
  13
  14 namespace {
  15
  16 // Pixel configuration for the current buffer format.
  17 // TODO(dnicoara) These will need to change once we query the hardware for
  18 // supported configurations.
  19 const uint8_t kColorDepth = 24;
  20 const uint8_t kPixelDepth = 32;
  21
  22 }  // namespace
  23
  24 GbmBufferBase::GbmBufferBase(const scoped_refptr<DrmDevice>& drm,
  25                              gbm_bo* bo,
  26                              bool scanout)
  27     : drm_(drm), bo_(bo) {
  28   if (scanout) {
  29     if (!drm_->AddFramebuffer(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
  30                               kColorDepth, kPixelDepth, gbm_bo_get_stride(bo),
  31                               gbm_bo_get_handle(bo).u32, &framebuffer_)) {
  32       PLOG(ERROR) << "Failed to register buffer";
  33       return;
  34     }
  35
  36     fb_pixel_format_ = gbm_bo_get_format(bo);
  37     if (fb_pixel_format_ == GBM_FORMAT_ARGB8888)
  38       fb_pixel_format_ = GBM_FORMAT_XRGB8888;
  39
  40     // For now, we always create a frame buffer of 24 bit color depth and
  41     // support only XRGB format.
  42     DCHECK(fb_pixel_format_ == GBM_FORMAT_XRGB8888);
  43   }
  44 }
  45
  46 GbmBufferBase::~GbmBufferBase() {
  47   if (framebuffer_)
  48     drm_->RemoveFramebuffer(framebuffer_);
  49 }
  50
  51 uint32_t GbmBufferBase::GetFramebufferId() const {
  52   return framebuffer_;
  53 }
  54
  55 uint32_t GbmBufferBase::GetHandle() const {
  56   return gbm_bo_get_handle(bo_).u32;
  57 }
  58
  59 gfx::Size GbmBufferBase::GetSize() const {
  60   return gfx::Size(gbm_bo_get_width(bo_), gbm_bo_get_height(bo_));
  61 }
  62
  63 uint32_t GbmBufferBase::GetFramebufferPixelFormat() const {
  64   return fb_pixel_format_;
  65 }
  66
  67 }  // namespace ui