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// 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_gpu_display_manager.h"
#include "ui/display/types/gamma_ramp_rgb_entry.h"
#include "ui/ozone/common/display_util.h"
#include "ui/ozone/platform/drm/common/drm_util.h"
#include "ui/ozone/platform/drm/gpu/drm_device.h"
#include "ui/ozone/platform/drm/gpu/drm_device_manager.h"
#include "ui/ozone/platform/drm/gpu/drm_display.h"
#include "ui/ozone/platform/drm/gpu/screen_manager.h"
namespace ui {
namespace {
class DisplayComparator {
public:
explicit DisplayComparator(const DrmDisplay* display)
: drm_(display->drm()),
crtc_(display->crtc()),
connector_(display->connector()) {}
DisplayComparator(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector)
: drm_(drm), crtc_(crtc), connector_(connector) {}
bool operator()(const DrmDisplay* other) const {
return drm_ == other->drm() && connector_ == other->connector() &&
crtc_ == other->crtc();
}
private:
scoped_refptr<DrmDevice> drm_;
uint32_t crtc_;
uint32_t connector_;
};
bool FindMatchingMode(const std::vector<drmModeModeInfo> modes,
const DisplayMode_Params& mode_params,
drmModeModeInfo* mode) {
for (const drmModeModeInfo& m : modes) {
DisplayMode_Params params = CreateDisplayModeParams(m);
if (mode_params.size == params.size &&
mode_params.refresh_rate == params.refresh_rate &&
mode_params.is_interlaced == params.is_interlaced) {
*mode = m;
return true;
}
}
return false;
}
} // namespace
DrmGpuDisplayManager::DrmGpuDisplayManager(ScreenManager* screen_manager,
DrmDeviceManager* drm_device_manager)
: screen_manager_(screen_manager), drm_device_manager_(drm_device_manager) {
}
DrmGpuDisplayManager::~DrmGpuDisplayManager() {
}
std::vector<DisplaySnapshot_Params> DrmGpuDisplayManager::GetDisplays() {
ScopedVector<DrmDisplay> old_displays(displays_.Pass());
std::vector<DisplaySnapshot_Params> params_list;
const DrmDeviceVector& devices = drm_device_manager_->GetDrmDevices();
// Unique identifier used to create the display id.
size_t index = 0;
for (const auto& drm : devices) {
ScopedVector<HardwareDisplayControllerInfo> display_infos =
GetAvailableDisplayControllerInfos(drm->get_fd());
for (auto* display_info : display_infos) {
auto it = std::find_if(
old_displays.begin(), old_displays.end(),
DisplayComparator(drm, display_info->crtc()->crtc_id,
display_info->connector()->connector_id));
if (it != old_displays.end()) {
displays_.push_back(*it);
old_displays.weak_erase(it);
} else {
displays_.push_back(new DrmDisplay(screen_manager_, drm));
}
params_list.push_back(displays_.back()->Update(display_info, index++));
}
}
NotifyScreenManager(displays_.get(), old_displays.get());
return params_list;
}
bool DrmGpuDisplayManager::TakeDisplayControl() {
const DrmDeviceVector& devices = drm_device_manager_->GetDrmDevices();
for (const auto& drm : devices) {
if (!drm->SetMaster()) {
LOG(ERROR) << "Failed to take control of the display";
return false;
}
}
return true;
}
bool DrmGpuDisplayManager::RelinquishDisplayControl() {
const DrmDeviceVector& devices = drm_device_manager_->GetDrmDevices();
for (const auto& drm : devices) {
if (!drm->DropMaster()) {
LOG(ERROR) << "Failed to relinquish control of the display";
return false;
}
}
return true;
}
bool DrmGpuDisplayManager::ConfigureDisplay(
int64_t display_id,
const DisplayMode_Params& mode_param,
const gfx::Point& origin) {
DrmDisplay* display = FindDisplay(display_id);
if (!display) {
LOG(ERROR) << "There is no display with ID " << display_id;
return false;
}
drmModeModeInfo mode;
bool mode_found = FindMatchingMode(display->modes(), mode_param, &mode);
if (!mode_found) {
// If the display doesn't have the mode natively, then lookup the mode from
// other displays and try using it on the current display (some displays
// support panel fitting and they can use different modes even if the mode
// isn't explicitly declared).
for (DrmDisplay* other : displays_) {
mode_found = FindMatchingMode(other->modes(), mode_param, &mode);
if (mode_found)
break;
}
}
if (!mode_found) {
LOG(ERROR) << "Failed to find mode: size=" << mode_param.size.ToString()
<< " is_interlaced=" << mode_param.is_interlaced
<< " refresh_rate=" << mode_param.refresh_rate;
return false;
}
return display->Configure(&mode, origin);
}
bool DrmGpuDisplayManager::DisableDisplay(int64_t display_id) {
DrmDisplay* display = FindDisplay(display_id);
if (!display) {
LOG(ERROR) << "There is no display with ID " << display_id;
return false;
}
return display->Configure(nullptr, gfx::Point());
}
bool DrmGpuDisplayManager::GetHDCPState(int64_t display_id, HDCPState* state) {
DrmDisplay* display = FindDisplay(display_id);
if (!display) {
LOG(ERROR) << "There is no display with ID " << display_id;
return false;
}
return display->GetHDCPState(state);
}
bool DrmGpuDisplayManager::SetHDCPState(int64_t display_id, HDCPState state) {
DrmDisplay* display = FindDisplay(display_id);
if (!display) {
LOG(ERROR) << "There is no display with ID " << display_id;
return false;
}
return display->SetHDCPState(state);
}
void DrmGpuDisplayManager::SetGammaRamp(
int64_t display_id,
const std::vector<GammaRampRGBEntry>& lut) {
DrmDisplay* display = FindDisplay(display_id);
if (!display) {
LOG(ERROR) << "There is no display with ID " << display_id;
return;
}
display->SetGammaRamp(lut);
}
DrmDisplay* DrmGpuDisplayManager::FindDisplay(int64_t display_id) {
for (DrmDisplay* display : displays_)
if (display->display_id() == display_id)
return display;
return nullptr;
}
void DrmGpuDisplayManager::NotifyScreenManager(
const std::vector<DrmDisplay*>& new_displays,
const std::vector<DrmDisplay*>& old_displays) const {
for (size_t i = 0; i < old_displays.size(); ++i) {
const std::vector<DrmDisplay*>::const_iterator it =
std::find_if(new_displays.begin(), new_displays.end(),
DisplayComparator(old_displays[i]));
if (it == new_displays.end()) {
screen_manager_->RemoveDisplayController(old_displays[i]->drm(),
old_displays[i]->crtc());
}
}
for (size_t i = 0; i < new_displays.size(); ++i) {
const std::vector<DrmDisplay*>::const_iterator it =
std::find_if(old_displays.begin(), old_displays.end(),
DisplayComparator(new_displays[i]));
if (it == old_displays.end()) {
screen_manager_->AddDisplayController(new_displays[i]->drm(),
new_displays[i]->crtc(),
new_displays[i]->connector());
}
}
}
} // namespace ui
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