// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "ui/ozone/platform/drm/common/hardware_display_controller_info.h"
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <memory>
#include "base/files/file_path.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/display/types/display_mode.h"
#include "ui/gfx/geometry/size.h"
#include "ui/ozone/platform/drm/common/scoped_drm_types.h"
#include "ui/ozone/platform/drm/common/tile_property.h"
#include "ui/ozone/platform/drm/gpu/fake_drm_device.h"
#include "ui/ozone/platform/drm/gpu/fake_drm_device_generator.h"
namespace ui {
using ::testing::IsEmpty;
using ::testing::SizeIs;
// Sample EDID data extracted from real devices.
constexpr unsigned char kNormalDisplay[] =
"\x00\xff\xff\xff\xff\xff\xff\x00\x22\xf0\x6c\x28\x01\x01\x01\x01"
"\x02\x16\x01\x04\xb5\x40\x28\x78\xe2\x8d\x85\xad\x4f\x35\xb1\x25"
"\x0e\x50\x54\x00\x00\x00\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
"\x01\x01\x01\x01\x01\x01\xe2\x68\x00\xa0\xa0\x40\x2e\x60\x30\x20"
"\x36\x00\x81\x90\x21\x00\x00\x1a\xbc\x1b\x00\xa0\x50\x20\x17\x30"
"\x30\x20\x36\x00\x81\x90\x21\x00\x00\x1a\x00\x00\x00\xfc\x00\x48"
"\x50\x20\x5a\x52\x33\x30\x77\x0a\x20\x20\x20\x20\x00\x00\x00\xff"
"\x00\x43\x4e\x34\x32\x30\x32\x31\x33\x37\x51\x0a\x20\x20\x00\x71";
constexpr size_t kNormalDisplayLength = std::size(kNormalDisplay);
class HardwareDisplayControllerInfoTest : public testing::Test {
public:
HardwareDisplayControllerInfoTest() {
fake_device_generator_ = std::make_unique<FakeDrmDeviceGenerator>();
device_ = fake_device_generator_->CreateDevice(
base::FilePath("/test/dri/card0"), base::ScopedFD(),
/*is_primary_device=*/true);
fake_drm_ = static_cast<FakeDrmDevice*>(device_.get());
fake_drm_->ResetStateWithAllProperties();
}
protected:
std::unique_ptr<DrmDeviceGenerator> fake_device_generator_;
scoped_refptr<DrmDevice> device_;
raw_ptr<FakeDrmDevice> fake_drm_;
};
TEST_F(HardwareDisplayControllerInfoTest, BasicInfo) {
uint32_t crtc_id = 0, connector_id = 0;
{
crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
HardwareDisplayControllerInfo info(fake_drm_->GetConnector(connector_id),
fake_drm_->GetCrtc(crtc_id),
/*index=*/1, std::nullopt);
ASSERT_NE(info.connector(), nullptr);
EXPECT_EQ(info.connector()->connector_id, connector_id);
ASSERT_NE(info.crtc(), nullptr);
EXPECT_EQ(info.crtc()->crtc_id, crtc_id);
EXPECT_EQ(info.index(), 1);
EXPECT_EQ(info.edid_parser(), std::nullopt);
EXPECT_EQ(info.tile_property(), std::nullopt);
}
TEST_F(HardwareDisplayControllerInfoTest, HasEdidParser) {
uint32_t crtc_id = 0, connector_id = 0;
{
crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
display::EdidParser edid_parser(std::vector<uint8_t>(
kNormalDisplay, kNormalDisplay + kNormalDisplayLength));
HardwareDisplayControllerInfo info(fake_drm_->GetConnector(connector_id),
fake_drm_->GetCrtc(crtc_id),
/*index=*/1, std::move(edid_parser));
ASSERT_NE(info.connector(), nullptr);
EXPECT_EQ(info.connector()->connector_id, connector_id);
ASSERT_NE(info.crtc(), nullptr);
EXPECT_EQ(info.crtc()->crtc_id, crtc_id);
EXPECT_EQ(info.index(), 1);
EXPECT_TRUE(info.edid_parser().has_value());
EXPECT_EQ(info.tile_property(), std::nullopt);
}
TEST_F(HardwareDisplayControllerInfoTest, TileInfo) {
uint32_t crtc_id = 0, connector_id = 0;
{
crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
TileProperty tile_property{.group_id = 1,
.scale_to_fit_display = true,
.tile_size = gfx::Size(3840, 4320),
.tile_layout = gfx::Size(2, 1),
.location = gfx::Point(0, 0)};
HardwareDisplayControllerInfo info(fake_drm_->GetConnector(connector_id),
fake_drm_->GetCrtc(crtc_id),
/*index=*/1, std::nullopt, tile_property);
ASSERT_TRUE(info.tile_property().has_value());
TileProperty actual_tile_property = *info.tile_property();
EXPECT_EQ(actual_tile_property.group_id, tile_property.group_id);
EXPECT_EQ(actual_tile_property.scale_to_fit_display,
tile_property.scale_to_fit_display);
EXPECT_EQ(actual_tile_property.tile_size, tile_property.tile_size);
EXPECT_EQ(actual_tile_property.tile_layout, tile_property.tile_layout);
EXPECT_EQ(actual_tile_property.location, tile_property.location);
}
TEST_F(HardwareDisplayControllerInfoTest, AcquireNonprimaryTileInfo) {
uint32_t primary_crtc_id = 0, primary_connector_id = 0;
{
primary_crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
primary_connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
uint32_t nonprimary_crtc_id = 0, nonprimary_connector_id = 0;
{
nonprimary_crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x10;
auto& connector = fake_drm_->AddConnector();
nonprimary_connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
TileProperty primary_tile_property{.group_id = 1,
.scale_to_fit_display = true,
.tile_size = gfx::Size(3840, 4320),
.tile_layout = gfx::Size(2, 1),
.location = gfx::Point(0, 0)};
TileProperty nonprimary_tile_property = primary_tile_property;
nonprimary_tile_property.location = gfx::Point(1, 0);
HardwareDisplayControllerInfo primary_info(
fake_drm_->GetConnector(primary_connector_id),
fake_drm_->GetCrtc(primary_crtc_id),
/*index=*/0, std::nullopt, primary_tile_property);
EXPECT_THAT(primary_info.nonprimary_tile_infos(), IsEmpty());
auto nonprimary_info = std::make_unique<HardwareDisplayControllerInfo>(
fake_drm_->GetConnector(nonprimary_connector_id),
fake_drm_->GetCrtc(nonprimary_crtc_id),
/*index=*/0, std::nullopt, nonprimary_tile_property);
primary_info.AcquireNonprimaryTileInfo(std::move(nonprimary_info));
ASSERT_THAT(primary_info.nonprimary_tile_infos(), SizeIs(1));
}
TEST_F(HardwareDisplayControllerInfoTest, ReleaseConnector) {
uint32_t crtc_id = 0, connector_id = 0;
{
crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
connector_id = connector.id;
connector.connection = true;
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
HardwareDisplayControllerInfo info(fake_drm_->GetConnector(connector_id),
fake_drm_->GetCrtc(crtc_id),
/*index=*/1, std::nullopt);
ASSERT_NE(info.connector(), nullptr);
EXPECT_EQ(info.connector()->connector_id, connector_id);
ScopedDrmConnectorPtr connector = info.ReleaseConnector();
ASSERT_NE(connector, nullptr);
ASSERT_EQ(info.connector(), nullptr);
EXPECT_EQ(connector->connector_id, connector_id);
}
TEST_F(HardwareDisplayControllerInfoTest, GetModesOfSize) {
uint32_t crtc_id = 0, connector_id = 0;
{
crtc_id = fake_drm_->AddCrtc().id;
auto& encoder = fake_drm_->AddEncoder();
encoder.possible_crtcs = 0x01;
auto& connector = fake_drm_->AddConnector();
connector_id = connector.id;
connector.connection = true;
connector.modes =
std::vector<ResolutionAndRefreshRate>{{gfx::Size(1920, 1080), 60},
{gfx::Size(1920, 1080), 30},
{gfx::Size(1280, 720), 60}};
connector.encoders = std::vector<uint32_t>{encoder.id};
}
fake_drm_->InitializeState(/*use_atomic=*/true);
HardwareDisplayControllerInfo info(fake_drm_->GetConnector(connector_id),
fake_drm_->GetCrtc(crtc_id),
/*index=*/1, std::nullopt);
EXPECT_THAT(info.GetModesOfSize(gfx::Size(1920, 1080)), SizeIs(2));
EXPECT_THAT(info.GetModesOfSize(gfx::Size(1280, 720)), SizeIs(1));
EXPECT_THAT(info.GetModesOfSize(gfx::Size(1366, 768)), IsEmpty());
}
} // namespace ui
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