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

// Copyright 2015 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/hardware_display_plane_atomic.h"

#include <drm.h>
#include <errno.h>
#include <xf86drm.h>

#include "ui/ozone/platform/drm/gpu/drm_device.h"

namespace ui {
namespace {

const char* kCrtcPropName = "CRTC_ID";
const char* kFbPropName = "FB_ID";
const char* kCrtcXPropName = "CRTC_X";
const char* kCrtcYPropName = "CRTC_Y";
const char* kCrtcWPropName = "CRTC_W";
const char* kCrtcHPropName = "CRTC_H";
const char* kSrcXPropName = "SRC_X";
const char* kSrcYPropName = "SRC_Y";
const char* kSrcWPropName = "SRC_W";
const char* kSrcHPropName = "SRC_H";

}  // namespace

HardwareDisplayPlaneAtomic::Property::Property() {
}

bool HardwareDisplayPlaneAtomic::Property::Initialize(
    DrmDevice* drm,
    const char* name,
    const ScopedDrmObjectPropertyPtr& plane_props) {
  for (uint32_t i = 0; i < plane_props->count_props; i++) {
    ScopedDrmPropertyPtr property(
        drmModeGetProperty(drm->get_fd(), plane_props->props[i]));
    if (property && !strcmp(property->name, name)) {
      id = property->prop_id;
      break;
    }
  }
  if (!id) {
    LOG(ERROR) << "Could not find property " << name;
    return false;
  }
  return true;
}

HardwareDisplayPlaneAtomic::HardwareDisplayPlaneAtomic(uint32_t plane_id,
                                                       uint32_t possible_crtcs)
    : HardwareDisplayPlane(plane_id, possible_crtcs) {
}
HardwareDisplayPlaneAtomic::~HardwareDisplayPlaneAtomic() {
}

bool HardwareDisplayPlaneAtomic::SetPlaneData(drmModePropertySet* property_set,
                                              uint32_t crtc_id,
                                              uint32_t framebuffer,
                                              const gfx::Rect& crtc_rect,
                                              const gfx::Rect& src_rect) {
  int plane_set_error =
      drmModePropertySetAdd(property_set, plane_id_, crtc_prop_.id, crtc_id) ||
      drmModePropertySetAdd(property_set, plane_id_, fb_prop_.id,
                            framebuffer) ||
      drmModePropertySetAdd(property_set, plane_id_, crtc_x_prop_.id,
                            crtc_rect.x()) ||
      drmModePropertySetAdd(property_set, plane_id_, crtc_y_prop_.id,
                            crtc_rect.y()) ||
      drmModePropertySetAdd(property_set, plane_id_, crtc_w_prop_.id,
                            crtc_rect.width()) ||
      drmModePropertySetAdd(property_set, plane_id_, crtc_h_prop_.id,
                            crtc_rect.height()) ||
      drmModePropertySetAdd(property_set, plane_id_, src_x_prop_.id,
                            src_rect.x()) ||
      drmModePropertySetAdd(property_set, plane_id_, src_y_prop_.id,
                            src_rect.x()) ||
      drmModePropertySetAdd(property_set, plane_id_, src_w_prop_.id,
                            src_rect.width()) ||
      drmModePropertySetAdd(property_set, plane_id_, src_h_prop_.id,
                            src_rect.height());
  if (plane_set_error) {
    PLOG(ERROR) << "Failed to set plane data";
    return false;
  }
  return true;
}

bool HardwareDisplayPlaneAtomic::Initialize(DrmDevice* drm) {
  ScopedDrmObjectPropertyPtr plane_props(drmModeObjectGetProperties(
      drm->get_fd(), plane_id_, DRM_MODE_OBJECT_PLANE));

  if (!plane_props) {
    PLOG(ERROR) << "Unable to get plane properties.";
    return false;
  }

  bool props_init = crtc_prop_.Initialize(drm, kCrtcPropName, plane_props) &&
                    fb_prop_.Initialize(drm, kFbPropName, plane_props) &&
                    crtc_x_prop_.Initialize(drm, kCrtcXPropName, plane_props) &&
                    crtc_y_prop_.Initialize(drm, kCrtcYPropName, plane_props) &&
                    crtc_w_prop_.Initialize(drm, kCrtcWPropName, plane_props) &&
                    crtc_h_prop_.Initialize(drm, kCrtcHPropName, plane_props) &&
                    src_x_prop_.Initialize(drm, kSrcXPropName, plane_props) &&
                    src_y_prop_.Initialize(drm, kSrcYPropName, plane_props) &&
                    src_w_prop_.Initialize(drm, kSrcWPropName, plane_props) &&
                    src_h_prop_.Initialize(drm, kSrcHPropName, plane_props);

  if (!props_init) {
    LOG(ERROR) << "Unable to get plane properties.";
    return false;
  }
  return true;
}

}  // namespace ui