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android_external_drm_hwcomp.../hwc2_device/HwcDisplay.cpp
Drew Davenport 2d71839c8a drm_hwcomposer: Remove HWC2 SetContentType 
Add a new function to set the HDMI content type, and call this from the
frontend.

Change-Id: I338a00b7a142c6d2e2c3a727e8e7df7d24c1594d
Signed-off-by: Drew Davenport <ddavenport@google.com>
2025-04-02 17:51:09 -06:00

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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "drmhwc"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include "HwcDisplay.h"
#include <cinttypes>
#include <ui/ColorSpace.h>
#include "backend/Backend.h"
#include "backend/BackendManager.h"
#include "bufferinfo/BufferInfoGetter.h"
#include "compositor/DisplayInfo.h"
#include "drm/DrmConnector.h"
#include "drm/DrmDisplayPipeline.h"
#include "drm/DrmHwc.h"
#include "utils/log.h"
#include "utils/properties.h"
using ::android::DrmDisplayPipeline;
using ColorGamut = ::android::ColorSpace;
namespace android {
namespace {
constexpr int kCtmRows = 3;
constexpr int kCtmCols = 3;
constexpr std::array<float, 16> kIdentityMatrix = {
1.0F, 0.0F, 0.0F, 0.0F, 0.0F, 1.0F, 0.0F, 0.0F,
0.0F, 0.0F, 1.0F, 0.0F, 0.0F, 0.0F, 0.0F, 1.0F,
};
bool float_equals(float a, float b) {
const float epsilon = 0.001F;
return std::abs(a - b) < epsilon;
}
uint64_t To3132FixPt(float in) {
constexpr uint64_t kSignMask = (1ULL << 63);
constexpr uint64_t kValueMask = ~(1ULL << 63);
constexpr auto kValueScale = static_cast<float>(1ULL << 32);
if (in < 0)
return (static_cast<uint64_t>(-in * kValueScale) & kValueMask) | kSignMask;
return static_cast<uint64_t>(in * kValueScale) & kValueMask;
}
bool TransformHasOffsetValue(const float *matrix) {
for (int i = 12; i < 14; i++) {
if (!float_equals(matrix[i], 0.F)) {
ALOGW("DRM API does not support CTM with offsets.");
return true;
}
}
return false;
}
auto ToColorTransform(const std::array<float, 16> &color_transform_matrix) {
/* HAL provides a 4x4 float type matrix:
* | 0 1 2 3|
* | 4 5 6 7|
* | 8 9 10 11|
* |12 13 14 15|
*
* R_out = R*0 + G*4 + B*8 + 12
* G_out = R*1 + G*5 + B*9 + 13
* B_out = R*2 + G*6 + B*10 + 14
*
* DRM expects a 3x3 s31.32 fixed point matrix:
* out matrix in
* |R| |0 1 2| |R|
* |G| = |3 4 5| x |G|
* |B| |6 7 8| |B|
*
* R_out = R*0 + G*1 + B*2
* G_out = R*3 + G*4 + B*5
* B_out = R*6 + G*7 + B*8
*/
auto color_matrix = std::make_shared<drm_color_ctm>();
for (int i = 0; i < kCtmCols; i++) {
for (int j = 0; j < kCtmRows; j++) {
constexpr int kInCtmRows = 4;
color_matrix->matrix[(i * kCtmRows) + j] = To3132FixPt(
color_transform_matrix[(j * kInCtmRows) + i]);
}
}
return color_matrix;
}
} // namespace
std::string HwcDisplay::DumpDelta(HwcDisplay::Stats delta) {
if (delta.total_pixops_ == 0)
return "No stats yet";
auto ratio = 1.0 - (double(delta.gpu_pixops_) / double(delta.total_pixops_));
std::stringstream ss;
ss << " Total frames count: " << delta.total_frames_ << "\n"
<< " Failed to test commit frames: " << delta.failed_kms_validate_ << "\n"
<< " Failed to commit frames: " << delta.failed_kms_present_ << "\n"
<< ((delta.failed_kms_present_ > 0)
? " !!! Internal failure, FIX it please\n"
: "")
<< " Flattened frames: " << delta.frames_flattened_ << "\n"
<< " Pixel operations (free units)"
<< " : [TOTAL: " << delta.total_pixops_ << " / GPU: " << delta.gpu_pixops_
<< "]\n"
<< " Composition efficiency: " << ratio;
return ss.str();
}
std::string HwcDisplay::Dump() {
auto connector_name = IsInHeadlessMode()
? std::string("NULL-DISPLAY")
: GetPipe().connector->Get()->GetName();
std::stringstream ss;
ss << "- Display on: " << connector_name << "\n"
<< "Statistics since system boot:\n"
<< DumpDelta(total_stats_) << "\n\n"
<< "Statistics since last dumpsys request:\n"
<< DumpDelta(total_stats_.minus(prev_stats_)) << "\n\n";
memcpy(&prev_stats_, &total_stats_, sizeof(Stats));
return ss.str();
}
HwcDisplay::HwcDisplay(hwc2_display_t handle, HWC2::DisplayType type,
DrmHwc *hwc)
: hwc_(hwc), handle_(handle), type_(type), client_layer_(this) {
if (type_ == HWC2::DisplayType::Virtual) {
writeback_layer_ = std::make_unique<HwcLayer>(this);
}
identity_color_matrix_ = ToColorTransform(kIdentityMatrix);
}
void HwcDisplay::SetColorTransformMatrix(
const std::array<float, 16> &color_transform_matrix) {
const bool is_identity = std::equal(color_transform_matrix.begin(),
color_transform_matrix.end(),
kIdentityMatrix.begin(), float_equals);
color_transform_hint_ = is_identity ? HAL_COLOR_TRANSFORM_IDENTITY
: HAL_COLOR_TRANSFORM_ARBITRARY_MATRIX;
ctm_has_offset_ = false;
if (color_transform_hint_ == is_identity) {
SetColorMatrixToIdentity();
} else {
if (TransformHasOffsetValue(color_transform_matrix.data()))
ctm_has_offset_ = true;
color_matrix_ = ToColorTransform(color_transform_matrix);
}
}
void HwcDisplay::SetColorMatrixToIdentity() {
color_matrix_ = identity_color_matrix_;
color_transform_hint_ = HAL_COLOR_TRANSFORM_IDENTITY;
}
HwcDisplay::~HwcDisplay() {
Deinit();
};
auto HwcDisplay::GetConfig(hwc2_config_t config_id) const
-> const HwcDisplayConfig * {
auto config_iter = configs_.hwc_configs.find(config_id);
if (config_iter == configs_.hwc_configs.end()) {
return nullptr;
}
return &config_iter->second;
}
auto HwcDisplay::GetCurrentConfig() const -> const HwcDisplayConfig * {
return GetConfig(configs_.active_config_id);
}
auto HwcDisplay::GetLastRequestedConfig() const -> const HwcDisplayConfig * {
return GetConfig(staged_mode_config_id_.value_or(configs_.active_config_id));
}
HwcDisplay::ConfigError HwcDisplay::SetConfig(hwc2_config_t config) {
const HwcDisplayConfig *new_config = GetConfig(config);
if (new_config == nullptr) {
ALOGE("Could not find active mode for %u", config);
return ConfigError::kBadConfig;
}
const HwcDisplayConfig *current_config = GetCurrentConfig();
const uint32_t width = new_config->mode.GetRawMode().hdisplay;
const uint32_t height = new_config->mode.GetRawMode().vdisplay;
std::optional<LayerData> modeset_layer_data;
// If a client layer has already been provided, and its size matches the
// new config, use it for the modeset.
if (client_layer_.IsLayerUsableAsDevice() && current_config &&
current_config->mode.GetRawMode().hdisplay == width &&
current_config->mode.GetRawMode().vdisplay == height) {
ALOGV("Use existing client_layer for blocking config.");
modeset_layer_data = client_layer_.GetLayerData();
} else {
ALOGV("Allocate modeset buffer.");
auto modeset_buffer = //
GetPipe().device->CreateBufferForModeset(width, height);
if (modeset_buffer) {
auto modeset_layer = std::make_unique<HwcLayer>(this);
HwcLayer::LayerProperties properties;
properties.slot_buffer = {
.slot_id = 0,
.bi = modeset_buffer,
};
properties.active_slot = {
.slot_id = 0,
.fence = {},
};
properties.blend_mode = BufferBlendMode::kNone;
modeset_layer->SetLayerProperties(properties);
modeset_layer->PopulateLayerData();
modeset_layer_data = modeset_layer->GetLayerData();
}
}
ALOGV("Create modeset commit.");
// Create atomic commit args for a blocking modeset. There's no need to do a
// separate test commit, since the commit does a test anyways.
AtomicCommitArgs commit_args = CreateModesetCommit(new_config,
modeset_layer_data);
commit_args.blocking = true;
int ret = GetPipe().atomic_state_manager->ExecuteAtomicCommit(commit_args);
if (ret) {
ALOGE("Blocking config failed: %d", ret);
return HwcDisplay::ConfigError::kBadConfig;
}
ALOGV("Blocking config succeeded.");
configs_.active_config_id = config;
staged_mode_config_id_.reset();
vsync_worker_->SetVsyncPeriodNs(new_config->mode.GetVSyncPeriodNs());
// set new vsync period
return ConfigError::kNone;
}
auto HwcDisplay::QueueConfig(hwc2_config_t config, int64_t desired_time,
bool seamless, QueuedConfigTiming *out_timing)
-> ConfigError {
if (configs_.hwc_configs.count(config) == 0) {
ALOGE("Could not find active mode for %u", config);
return ConfigError::kBadConfig;
}
// TODO: Add support for seamless configuration changes.
if (seamless) {
return ConfigError::kSeamlessNotAllowed;
}
// Request a refresh from the client one vsync period before the desired
// time, or simply at the desired time if there is no active configuration.
const HwcDisplayConfig *current_config = GetCurrentConfig();
out_timing->refresh_time_ns = desired_time -
(current_config
? current_config->mode.GetVSyncPeriodNs()
: 0);
out_timing->new_vsync_time_ns = desired_time;
// Queue the config change timing to be consistent with the requested
// refresh time.
staged_mode_change_time_ = out_timing->refresh_time_ns;
staged_mode_config_id_ = config;
// Enable vsync events until the mode has been applied.
vsync_worker_->SetVsyncTimestampTracking(true);
return ConfigError::kNone;
}
auto HwcDisplay::ValidateStagedComposition() -> std::vector<ChangedLayer> {
if (IsInHeadlessMode()) {
return {};
}
/* In current drm_hwc design in case previous frame layer was not validated as
* a CLIENT, it is used by display controller (Front buffer). We have to store
* this state to provide the CLIENT with the release fences for such buffers.
*/
for (auto &l : layers_) {
l.second.SetPriorBufferScanOutFlag(l.second.GetValidatedType() !=
HWC2::Composition::Client);
}
// ValidateDisplay returns the number of layers that may be changed.
uint32_t num_types = 0;
uint32_t num_requests = 0;
backend_->ValidateDisplay(this, &num_types, &num_requests);
if (num_types == 0) {
return {};
}
// Iterate through the layers to find which layers actually changed.
std::vector<ChangedLayer> changed_layers;
for (auto &l : layers_) {
if (l.second.IsTypeChanged()) {
changed_layers.emplace_back(l.first, l.second.GetValidatedType());
}
}
return changed_layers;
}
auto HwcDisplay::GetDisplayBoundsMm() -> std::pair<int32_t, int32_t> {
if (IsInHeadlessMode()) {
return {configs_.mm_width, -1};
}
const auto bounds = GetEdid()->GetBoundsMm();
if (bounds.first > 0 || bounds.second > 0) {
return bounds;
}
ALOGE("Failed to get display bounds for d=%d\n", int(handle_));
// mm_width and mm_height are unreliable. so only provide mm_width to avoid
// wrong dpi computations or other use of the values.
return {configs_.mm_width, -1};
}
auto HwcDisplay::AcceptValidatedComposition() -> void {
for (auto &[_, layer] : layers_) {
layer.AcceptTypeChange();
}
}
auto HwcDisplay::PresentStagedComposition(
std::optional<int64_t> desired_present_time, SharedFd &out_present_fence,
std::vector<ReleaseFence> &out_release_fences) -> bool {
if (IsInHeadlessMode()) {
return true;
}
HWC2::Error ret{};
++total_stats_.total_frames_;
uint32_t vperiod_ns = 0;
GetDisplayVsyncPeriod(&vperiod_ns);
if (desired_present_time && vperiod_ns != 0) {
// DRM atomic uAPI does not support specifying that a commit should be
// applied to some future vsync. Until such uAPI is available, sleep in
// userspace until the next expected vsync time is consistent with the
// desired present time.
WaitForPresentTime(desired_present_time.value(), vperiod_ns);
}
AtomicCommitArgs a_args{};
ret = CreateComposition(a_args);
if (ret != HWC2::Error::None)
++total_stats_.failed_kms_present_;
if (ret == HWC2::Error::BadLayer) {
// Can we really have no client or device layers?
return true;
}
if (ret != HWC2::Error::None)
return false;
out_present_fence = a_args.out_fence;
// Reset the color matrix so we don't apply it over and over again.
color_matrix_ = {};
++frame_no_;
if (!out_present_fence) {
return true;
}
for (auto &l : layers_) {
if (l.second.GetPriorBufferScanOutFlag()) {
out_release_fences.emplace_back(l.first, out_present_fence);
}
}
return true;
}
auto HwcDisplay::GetRawEdid() -> std::vector<uint8_t> {
if (IsInHeadlessMode()) {
return {};
}
auto *connector = GetPipe().connector->Get();
auto blob = connector->GetEdidBlob();
if (!blob || blob->length == 0) {
return {};
}
const uint8_t *edid_data = static_cast<uint8_t *>(blob->data);
return {edid_data, edid_data + blob->length};
}
auto HwcDisplay::GetPort() -> uint8_t {
if (IsInHeadlessMode()) {
return 0;
}
auto *connector = GetPipe().connector->Get();
constexpr uint8_t kDrmDeviceBitShift = 5U;
constexpr uint8_t kDrmDeviceBitMask = 0xE0;
constexpr uint8_t kConnectorBitMask = 0x1F;
const auto kDrmIdx = static_cast<uint8_t>(
connector->GetDev().GetIndexInDevArray());
const auto kConnectorIdx = static_cast<uint8_t>(
connector->GetIndexInResArray());
return (((kDrmIdx << kDrmDeviceBitShift) & kDrmDeviceBitMask) |
(kConnectorIdx & kConnectorBitMask));
}
void HwcDisplay::SetPipeline(std::shared_ptr<DrmDisplayPipeline> pipeline) {
Deinit();
pipeline_ = std::move(pipeline);
if (pipeline_ != nullptr || handle_ == kPrimaryDisplay) {
Init();
hwc_->ScheduleHotplugEvent(handle_, DrmHwc::kConnected);
} else {
hwc_->ScheduleHotplugEvent(handle_, DrmHwc::kDisconnected);
}
}
void HwcDisplay::Deinit() {
if (pipeline_ != nullptr) {
AtomicCommitArgs a_args{};
a_args.composition = std::make_shared<DrmKmsPlan>();
GetPipe().atomic_state_manager->ExecuteAtomicCommit(a_args);
a_args.composition = {};
a_args.active = false;
GetPipe().atomic_state_manager->ExecuteAtomicCommit(a_args);
current_plan_.reset();
backend_.reset();
if (flatcon_) {
flatcon_->StopThread();
flatcon_.reset();
}
}
if (vsync_worker_) {
vsync_worker_->StopThread();
vsync_worker_ = {};
}
client_layer_.ClearSlots();
}
HWC2::Error HwcDisplay::Init() {
ChosePreferredConfig();
if (type_ != HWC2::DisplayType::Virtual) {
vsync_worker_ = VSyncWorker::CreateInstance(pipeline_);
if (!vsync_worker_) {
ALOGE("Failed to create event worker for d=%d\n", int(handle_));
return HWC2::Error::BadDisplay;
}
}
if (!IsInHeadlessMode()) {
auto ret = BackendManager::GetInstance().SetBackendForDisplay(this);
if (ret) {
ALOGE("Failed to set backend for d=%d %d\n", int(handle_), ret);
return HWC2::Error::BadDisplay;
}
auto flatcbk = (struct FlatConCallbacks){
.trigger = [this]() { hwc_->SendRefreshEventToClient(handle_); }};
flatcon_ = FlatteningController::CreateInstance(flatcbk);
}
HwcLayer::LayerProperties lp;
lp.blend_mode = BufferBlendMode::kPreMult;
client_layer_.SetLayerProperties(lp);
SetColorMatrixToIdentity();
return HWC2::Error::None;
}
std::optional<PanelOrientation> HwcDisplay::getDisplayPhysicalOrientation() {
if (IsInHeadlessMode()) {
// The pipeline can be nullptr in headless mode, so return the default
// "normal" mode.
return PanelOrientation::kModePanelOrientationNormal;
}
DrmDisplayPipeline &pipeline = GetPipe();
if (pipeline.connector == nullptr || pipeline.connector->Get() == nullptr) {
ALOGW(
"No display pipeline present to query the panel orientation property.");
return {};
}
return pipeline.connector->Get()->GetPanelOrientation();
}
HWC2::Error HwcDisplay::ChosePreferredConfig() {
HWC2::Error err{};
if (type_ == HWC2::DisplayType::Virtual) {
configs_.GenFakeMode(virtual_disp_width_, virtual_disp_height_);
} else if (!IsInHeadlessMode()) {
err = configs_.Update(*pipeline_->connector->Get());
} else {
configs_.GenFakeMode(0, 0);
}
if (!IsInHeadlessMode() && err != HWC2::Error::None) {
return HWC2::Error::BadDisplay;
}
return SetActiveConfig(configs_.preferred_config_id);
}
auto HwcDisplay::CreateLayer(ILayerId new_layer_id) -> bool {
if (layers_.count(new_layer_id) > 0)
return false;
layers_.emplace(new_layer_id, HwcLayer(this));
return true;
}
auto HwcDisplay::DestroyLayer(ILayerId layer_id) -> bool {
auto count = layers_.erase(layer_id);
return count != 0;
}
HWC2::Error HwcDisplay::GetColorModes(uint32_t *num_modes, int32_t *modes) {
if (IsInHeadlessMode()) {
*num_modes = 1;
if (modes)
modes[0] = HAL_COLOR_MODE_NATIVE;
return HWC2::Error::None;
}
if (!modes) {
std::vector<Colormode> temp_modes;
GetEdid()->GetColorModes(temp_modes);
*num_modes = temp_modes.size();
return HWC2::Error::None;
}
std::vector<Colormode> temp_modes;
std::vector<int32_t> out_modes(modes, modes + *num_modes);
GetEdid()->GetColorModes(temp_modes);
if (temp_modes.empty()) {
out_modes.emplace_back(HAL_COLOR_MODE_NATIVE);
return HWC2::Error::None;
}
for (auto &c : temp_modes)
out_modes.emplace_back(static_cast<int32_t>(c));
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::GetDisplayAttribute(hwc2_config_t config,
int32_t attribute_in,
int32_t *value) {
int conf = static_cast<int>(config);
if (configs_.hwc_configs.count(conf) == 0) {
ALOGE("Could not find mode #%d", conf);
return HWC2::Error::BadConfig;
}
auto &hwc_config = configs_.hwc_configs[conf];
static const int32_t kUmPerInch = 25400;
auto mm_width = configs_.mm_width;
auto attribute = static_cast<HWC2::Attribute>(attribute_in);
switch (attribute) {
case HWC2::Attribute::Width:
*value = static_cast<int>(hwc_config.mode.GetRawMode().hdisplay);
break;
case HWC2::Attribute::Height:
*value = static_cast<int>(hwc_config.mode.GetRawMode().vdisplay);
break;
case HWC2::Attribute::VsyncPeriod:
// in nanoseconds
*value = hwc_config.mode.GetVSyncPeriodNs();
break;
case HWC2::Attribute::DpiY:
*value = IsInHeadlessMode() ? -1 : GetEdid()->GetDpiY();
if (*value < 0) {
// default to raw mode DpiX for both x and y when no good value
// can be provided from edid.
*value = mm_width ? int(hwc_config.mode.GetRawMode().hdisplay *
kUmPerInch / mm_width)
: -1;
}
break;
case HWC2::Attribute::DpiX:
// Dots per 1000 inches
*value = IsInHeadlessMode() ? -1 : GetEdid()->GetDpiX();
if (*value < 0) {
// default to raw mode DpiX for both x and y when no good value
// can be provided from edid.
*value = mm_width ? int(hwc_config.mode.GetRawMode().hdisplay *
kUmPerInch / mm_width)
: -1;
}
break;
#if __ANDROID_API__ > 29
case HWC2::Attribute::ConfigGroup:
/* Dispite ConfigGroup is a part of HWC2.4 API, framework
* able to request it even if service @2.1 is used */
*value = int(hwc_config.group_id);
break;
#endif
default:
*value = -1;
return HWC2::Error::BadConfig;
}
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::LegacyGetDisplayConfigs(uint32_t *num_configs,
hwc2_config_t *configs) {
uint32_t idx = 0;
for (auto &hwc_config : configs_.hwc_configs) {
if (hwc_config.second.disabled) {
continue;
}
if (configs != nullptr) {
if (idx >= *num_configs) {
break;
}
configs[idx] = hwc_config.second.id;
}
idx++;
}
*num_configs = idx;
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::GetDisplayName(uint32_t *size, char *name) {
std::ostringstream stream;
if (IsInHeadlessMode()) {
stream << "null-display";
} else {
stream << "display-" << GetPipe().connector->Get()->GetId();
}
auto string = stream.str();
auto length = string.length();
if (!name) {
*size = length;
return HWC2::Error::None;
}
*size = std::min<uint32_t>(static_cast<uint32_t>(length - 1), *size);
strncpy(name, string.c_str(), *size);
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::GetDisplayType(int32_t *type) {
*type = static_cast<int32_t>(type_);
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::GetHdrCapabilities(uint32_t *num_types, int32_t *types,
float *max_luminance,
float *max_average_luminance,
float *min_luminance) {
if (IsInHeadlessMode()) {
*num_types = 0;
return HWC2::Error::None;
}
if (!types) {
std::vector<ui::Hdr> temp_types;
float lums[3] = {0.F};
GetEdid()->GetHdrCapabilities(temp_types, &lums[0], &lums[1], &lums[2]);
*num_types = temp_types.size();
return HWC2::Error::None;
}
std::vector<ui::Hdr> temp_types;
std::vector<int32_t> out_types(types, types + *num_types);
GetEdid()->GetHdrCapabilities(temp_types, max_luminance,
max_average_luminance, min_luminance);
for (auto &t : temp_types) {
switch (t) {
case ui::Hdr::HDR10:
out_types.emplace_back(HAL_HDR_HDR10);
break;
case ui::Hdr::HLG:
out_types.emplace_back(HAL_HDR_HLG);
break;
default:
// Ignore any other HDR types
break;
}
}
return HWC2::Error::None;
}
AtomicCommitArgs HwcDisplay::CreateModesetCommit(
const HwcDisplayConfig *config,
const std::optional<LayerData> &modeset_layer) {
AtomicCommitArgs args{};
args.color_matrix = color_matrix_;
args.content_type = content_type_;
args.colorspace = colorspace_;
args.hdr_metadata = hdr_metadata_;
std::vector<LayerData> composition_layers;
if (modeset_layer) {
composition_layers.emplace_back(modeset_layer.value());
}
if (composition_layers.empty()) {
ALOGW("Attempting to create a modeset commit without a layer.");
}
args.display_mode = config->mode;
args.active = true;
args.composition = DrmKmsPlan::CreateDrmKmsPlan(GetPipe(),
std::move(
composition_layers));
ALOGW_IF(!args.composition, "No composition for blocking modeset");
return args;
}
void HwcDisplay::WaitForPresentTime(int64_t present_time,
uint32_t vsync_period_ns) {
const int64_t current_time = ResourceManager::GetTimeMonotonicNs();
int64_t next_vsync_time = vsync_worker_->GetNextVsyncTimestamp(current_time);
int64_t vsync_after_present_time = vsync_worker_->GetNextVsyncTimestamp(
present_time);
int64_t vsync_before_present_time = vsync_after_present_time -
vsync_period_ns;
// Check if |present_time| is closer to the expected vsync before or after.
int64_t desired_vsync = (vsync_after_present_time - present_time) <
(present_time - vsync_before_present_time)
? vsync_after_present_time
: vsync_before_present_time;
// Don't sleep if desired_vsync is before or nearly equal to vsync_period of
// the next expected vsync.
const int64_t quarter_vsync_period = vsync_period_ns / 4;
if ((desired_vsync - next_vsync_time) < quarter_vsync_period) {
return;
}
// Sleep until 75% vsync_period before the desired_vsync.
int64_t sleep_until = desired_vsync - (quarter_vsync_period * 3);
struct timespec sleep_until_ts{};
constexpr int64_t kOneSecondNs = 1LL * 1000 * 1000 * 1000;
sleep_until_ts.tv_sec = int(sleep_until / kOneSecondNs);
sleep_until_ts.tv_nsec = int(sleep_until -
(sleep_until_ts.tv_sec * kOneSecondNs));
clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &sleep_until_ts, nullptr);
}
// NOLINTNEXTLINE(readability-function-cognitive-complexity)
HWC2::Error HwcDisplay::CreateComposition(AtomicCommitArgs &a_args) {
if (IsInHeadlessMode()) {
ALOGE("%s: Display is in headless mode, should never reach here", __func__);
return HWC2::Error::None;
}
a_args.color_matrix = color_matrix_;
a_args.content_type = content_type_;
a_args.colorspace = colorspace_;
a_args.hdr_metadata = hdr_metadata_;
uint32_t prev_vperiod_ns = 0;
GetDisplayVsyncPeriod(&prev_vperiod_ns);
std::optional<uint32_t> new_vsync_period_ns;
if (staged_mode_config_id_ &&
staged_mode_change_time_ <= ResourceManager::GetTimeMonotonicNs()) {
const HwcDisplayConfig *staged_config = GetConfig(
staged_mode_config_id_.value());
if (staged_config == nullptr) {
return HWC2::Error::BadConfig;
}
configs_.active_config_id = staged_mode_config_id_.value();
a_args.display_mode = staged_config->mode;
if (!a_args.test_only) {
new_vsync_period_ns = staged_config->mode.GetVSyncPeriodNs();
}
}
// order the layers by z-order
size_t client_layer_count = 0;
bool use_client_layer = false;
uint32_t client_z_order = UINT32_MAX;
std::map<uint32_t, HwcLayer *> z_map;
std::optional<LayerData> cursor_layer = std::nullopt;
for (auto &[_, layer] : layers_) {
switch (layer.GetValidatedType()) {
case HWC2::Composition::Device:
z_map.emplace(layer.GetZOrder(), &layer);
break;
case HWC2::Composition::Cursor:
if (!cursor_layer.has_value()) {
layer.PopulateLayerData();
cursor_layer = layer.GetLayerData();
} else {
ALOGW("Detected multiple cursor layers");
z_map.emplace(layer.GetZOrder(), &layer);
}
break;
case HWC2::Composition::Client:
// Place it at the z_order of the lowest client layer
use_client_layer = true;
client_layer_count++;
client_z_order = std::min(client_z_order, layer.GetZOrder());
break;
default:
continue;
}
}
// CTM will be applied by the client, don't apply DRM CTM
if (client_layer_count == layers_.size())
a_args.color_matrix = identity_color_matrix_;
else
a_args.color_matrix = color_matrix_;
if (use_client_layer) {
z_map.emplace(client_z_order, &client_layer_);
client_layer_.PopulateLayerData();
if (!client_layer_.IsLayerUsableAsDevice()) {
ALOGE_IF(!a_args.test_only,
"Client layer must be always usable by DRM/KMS");
/* This may be normally triggered on validation of the first frame
* containing CLIENT layer. At this moment client buffer is not yet
* provided by the CLIENT.
* This may be triggered once in HwcLayer lifecycle in case FB can't be
* imported. For example when non-contiguous buffer is imported into
* contiguous-only DRM/KMS driver.
*/
return HWC2::Error::BadLayer;
}
}
if (z_map.empty())
return HWC2::Error::BadLayer;
std::vector<LayerData> composition_layers;
/* Import & populate */
for (std::pair<const uint32_t, HwcLayer *> &l : z_map) {
l.second->PopulateLayerData();
}
// now that they're ordered by z, add them to the composition
for (std::pair<const uint32_t, HwcLayer *> &l : z_map) {
if (!l.second->IsLayerUsableAsDevice()) {
return HWC2::Error::BadLayer;
}
composition_layers.emplace_back(l.second->GetLayerData());
}
/* Store plan to ensure shared planes won't be stolen by other display
* in between of ValidateDisplay() and PresentDisplay() calls
*/
current_plan_ = DrmKmsPlan::CreateDrmKmsPlan(GetPipe(),
std::move(composition_layers),
cursor_layer);
if (type_ == HWC2::DisplayType::Virtual) {
writeback_layer_->PopulateLayerData();
if (!writeback_layer_->IsLayerUsableAsDevice()) {
ALOGE("Output layer must be always usable by DRM/KMS");
return HWC2::Error::BadLayer;
}
a_args.writeback_fb = writeback_layer_->GetLayerData().fb;
a_args.writeback_release_fence = writeback_layer_->GetLayerData()
.acquire_fence;
}
if (!current_plan_) {
ALOGE_IF(!a_args.test_only, "Failed to create DrmKmsPlan");
return HWC2::Error::BadConfig;
}
a_args.composition = current_plan_;
auto ret = GetPipe().atomic_state_manager->ExecuteAtomicCommit(a_args);
if (ret) {
ALOGE_IF(!a_args.test_only, "Failed to apply the frame composition ret=%d", ret);
return HWC2::Error::BadParameter;
}
if (new_vsync_period_ns) {
staged_mode_config_id_.reset();
vsync_worker_->SetVsyncTimestampTracking(false);
uint32_t last_vsync_ts = vsync_worker_->GetLastVsyncTimestamp();
if (last_vsync_ts != 0) {
hwc_->SendVsyncPeriodTimingChangedEventToClient(handle_,
last_vsync_ts +
prev_vperiod_ns);
}
vsync_worker_->SetVsyncPeriodNs(new_vsync_period_ns.value());
}
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetActiveConfigInternal(uint32_t config,
int64_t change_time) {
if (configs_.hwc_configs.count(config) == 0) {
ALOGE("Could not find active mode for %u", config);
return HWC2::Error::BadConfig;
}
staged_mode_change_time_ = change_time;
staged_mode_config_id_ = config;
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetActiveConfig(hwc2_config_t config) {
return SetActiveConfigInternal(config, ResourceManager::GetTimeMonotonicNs());
}
HWC2::Error HwcDisplay::SetColorMode(int32_t mode) {
/* Maps to the Colorspace DRM connector property:
* https://elixir.bootlin.com/linux/v6.11/source/include/drm/drm_connector.h#L538
*/
if (mode < HAL_COLOR_MODE_NATIVE || mode > HAL_COLOR_MODE_DISPLAY_BT2020)
return HWC2::Error::BadParameter;
switch (mode) {
case HAL_COLOR_MODE_NATIVE:
hdr_metadata_ = std::make_shared<hdr_output_metadata>();
colorspace_ = Colorspace::kDefault;
break;
case HAL_COLOR_MODE_STANDARD_BT601_625:
case HAL_COLOR_MODE_STANDARD_BT601_625_UNADJUSTED:
case HAL_COLOR_MODE_STANDARD_BT601_525:
case HAL_COLOR_MODE_STANDARD_BT601_525_UNADJUSTED:
hdr_metadata_ = std::make_shared<hdr_output_metadata>();
// The DP spec does not say whether this is the 525 or the 625 line version.
colorspace_ = Colorspace::kBt601Ycc;
break;
case HAL_COLOR_MODE_STANDARD_BT709:
case HAL_COLOR_MODE_SRGB:
hdr_metadata_ = std::make_shared<hdr_output_metadata>();
colorspace_ = Colorspace::kBt709Ycc;
break;
case HAL_COLOR_MODE_DCI_P3:
case HAL_COLOR_MODE_DISPLAY_P3:
hdr_metadata_ = std::make_shared<hdr_output_metadata>();
colorspace_ = Colorspace::kDciP3RgbD65;
break;
case HAL_COLOR_MODE_DISPLAY_BT2020: {
std::vector<ui::Hdr> hdr_types;
GetEdid()->GetSupportedHdrTypes(hdr_types);
if (!hdr_types.empty()) {
auto ret = SetHdrOutputMetadata(hdr_types.front());
if (ret != HWC2::Error::None)
return ret;
}
colorspace_ = Colorspace::kBt2020Rgb;
break;
}
case HAL_COLOR_MODE_ADOBE_RGB:
case HAL_COLOR_MODE_BT2020:
case HAL_COLOR_MODE_BT2100_PQ:
case HAL_COLOR_MODE_BT2100_HLG:
default:
return HWC2::Error::Unsupported;
}
color_mode_ = mode;
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetColorTransform(const float *matrix, int32_t hint) {
if (hint < HAL_COLOR_TRANSFORM_IDENTITY ||
hint > HAL_COLOR_TRANSFORM_CORRECT_TRITANOPIA)
return HWC2::Error::BadParameter;
if (!matrix && hint == HAL_COLOR_TRANSFORM_ARBITRARY_MATRIX)
return HWC2::Error::BadParameter;
color_transform_hint_ = static_cast<android_color_transform_t>(hint);
ctm_has_offset_ = false;
if (IsInHeadlessMode())
return HWC2::Error::None;
if (!GetPipe().crtc->Get()->GetCtmProperty())
return HWC2::Error::None;
switch (color_transform_hint_) {
case HAL_COLOR_TRANSFORM_IDENTITY:
SetColorMatrixToIdentity();
break;
case HAL_COLOR_TRANSFORM_ARBITRARY_MATRIX:
// Without HW support, we cannot correctly process matrices with an offset.
{
if (TransformHasOffsetValue(matrix))
ctm_has_offset_ = true;
std::array<float, 16> aidl_matrix = kIdentityMatrix;
memcpy(aidl_matrix.data(), matrix, aidl_matrix.size() * sizeof(float));
color_matrix_ = ToColorTransform(aidl_matrix);
}
break;
default:
return HWC2::Error::Unsupported;
}
return HWC2::Error::None;
}
bool HwcDisplay::CtmByGpu() {
if (color_transform_hint_ == HAL_COLOR_TRANSFORM_IDENTITY)
return false;
if (GetPipe().crtc->Get()->GetCtmProperty() && !ctm_has_offset_)
return false;
if (GetHwc()->GetResMan().GetCtmHandling() == CtmHandling::kDrmOrIgnore)
return false;
return true;
}
HWC2::Error HwcDisplay::SetPowerMode(int32_t mode_in) {
auto mode = static_cast<HWC2::PowerMode>(mode_in);
AtomicCommitArgs a_args{};
switch (mode) {
case HWC2::PowerMode::Off:
a_args.active = false;
break;
case HWC2::PowerMode::On:
a_args.active = true;
break;
case HWC2::PowerMode::Doze:
case HWC2::PowerMode::DozeSuspend:
return HWC2::Error::Unsupported;
default:
ALOGE("Incorrect power mode value (%d)\n", mode_in);
return HWC2::Error::BadParameter;
}
if (IsInHeadlessMode()) {
return HWC2::Error::None;
}
if (a_args.active && *a_args.active) {
/*
* Setting the display to active before we have a composition
* can break some drivers, so skip setting a_args.active to
* true, as the next composition frame will implicitly activate
* the display
*/
return GetPipe().atomic_state_manager->ActivateDisplayUsingDPMS() == 0
? HWC2::Error::None
: HWC2::Error::BadParameter;
};
auto err = GetPipe().atomic_state_manager->ExecuteAtomicCommit(a_args);
if (err) {
ALOGE("Failed to apply the dpms composition err=%d", err);
return HWC2::Error::BadParameter;
}
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetVsyncEnabled(int32_t enabled) {
if (type_ == HWC2::DisplayType::Virtual) {
return HWC2::Error::None;
}
if (!vsync_worker_) {
return HWC2::Error::NoResources;
}
vsync_event_en_ = HWC2_VSYNC_ENABLE == enabled;
std::optional<VSyncWorker::VsyncTimestampCallback> callback = std::nullopt;
if (vsync_event_en_) {
DrmHwc *hwc = hwc_;
hwc2_display_t id = handle_;
// Callback will be called from the vsync thread.
callback = [hwc, id](int64_t timestamp, uint32_t period_ns) {
hwc->SendVsyncEventToClient(id, timestamp, period_ns);
};
}
vsync_worker_->SetTimestampCallback(std::move(callback));
return HWC2::Error::None;
}
std::vector<HwcLayer *> HwcDisplay::GetOrderLayersByZPos() {
std::vector<HwcLayer *> ordered_layers;
ordered_layers.reserve(layers_.size());
for (auto &[handle, layer] : layers_) {
ordered_layers.emplace_back(&layer);
}
std::sort(std::begin(ordered_layers), std::end(ordered_layers),
[](const HwcLayer *lhs, const HwcLayer *rhs) {
// Cursor layers should always have highest zpos.
if ((lhs->GetSfType() == HWC2::Composition::Cursor) !=
(rhs->GetSfType() == HWC2::Composition::Cursor)) {
return rhs->GetSfType() == HWC2::Composition::Cursor;
}
return lhs->GetZOrder() < rhs->GetZOrder();
});
return ordered_layers;
}
HWC2::Error HwcDisplay::GetDisplayVsyncPeriod(
uint32_t *outVsyncPeriod /* ns */) {
return GetDisplayAttribute(configs_.active_config_id,
HWC2_ATTRIBUTE_VSYNC_PERIOD,
(int32_t *)(outVsyncPeriod));
}
// Display primary values are coded as unsigned 16-bit values in units of
// 0.00002, where 0x0000 represents zero and 0xC350 represents 1.0000.
static uint64_t ToU16ColorValue(float in) {
constexpr float kPrimariesFixedPoint = 50000.F;
return static_cast<uint64_t>(kPrimariesFixedPoint * in);
}
HWC2::Error HwcDisplay::SetHdrOutputMetadata(ui::Hdr type) {
hdr_metadata_ = std::make_shared<hdr_output_metadata>();
hdr_metadata_->metadata_type = 0;
auto *m = &hdr_metadata_->hdmi_metadata_type1;
m->metadata_type = 0;
switch (type) {
case ui::Hdr::HDR10:
m->eotf = 2; // PQ
break;
case ui::Hdr::HLG:
m->eotf = 3; // HLG
break;
default:
return HWC2::Error::Unsupported;
}
// Most luminance values are coded as an unsigned 16-bit value in units of 1
// cd/m2, where 0x0001 represents 1 cd/m2 and 0xFFFF represents 65535 cd/m2.
std::vector<ui::Hdr> types;
float hdr_luminance[3]{0.F, 0.F, 0.F};
GetEdid()->GetHdrCapabilities(types, &hdr_luminance[0], &hdr_luminance[1],
&hdr_luminance[2]);
m->max_display_mastering_luminance = m->max_cll = static_cast<uint64_t>(
hdr_luminance[0]);
m->max_fall = static_cast<uint64_t>(hdr_luminance[1]);
// The min luminance value is coded as an unsigned 16-bit value in units of
// 0.0001 cd/m2, where 0x0001 represents 0.0001 cd/m2 and 0xFFFF
// represents 6.5535 cd/m2.
m->min_display_mastering_luminance = static_cast<uint64_t>(hdr_luminance[2] *
10000.F);
auto gamut = ColorGamut::BT2020();
auto primaries = gamut.getPrimaries();
m->display_primaries[0].x = ToU16ColorValue(primaries[0].x);
m->display_primaries[0].y = ToU16ColorValue(primaries[0].y);
m->display_primaries[1].x = ToU16ColorValue(primaries[1].x);
m->display_primaries[1].y = ToU16ColorValue(primaries[1].y);
m->display_primaries[2].x = ToU16ColorValue(primaries[2].x);
m->display_primaries[2].y = ToU16ColorValue(primaries[2].y);
auto whitePoint = gamut.getWhitePoint();
m->white_point.x = ToU16ColorValue(whitePoint.x);
m->white_point.y = ToU16ColorValue(whitePoint.y);
return HWC2::Error::None;
}
#if __ANDROID_API__ > 29
HWC2::Error HwcDisplay::GetDisplayConnectionType(uint32_t *outType) {
if (IsInHeadlessMode()) {
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::Internal);
return HWC2::Error::None;
}
/* Primary display should be always internal,
* otherwise SF will be unhappy and will crash
*/
auto displays = GetHwc()->GetResMan().GetInternalDisplayNames();
if (handle_ == kPrimaryDisplay) {
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::Internal);
return HWC2::Error::None;
}
if (!displays.empty()) {
std::string name = GetPipe().connector->Get()->GetName();
const bool is_internal = (displays.find(name) != displays.end());
if (is_internal)
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::Internal);
else
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::External);
return HWC2::Error::None;
}
if (GetPipe().connector->Get()->IsInternal())
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::Internal);
else if (GetPipe().connector->Get()->IsExternal())
*outType = static_cast<uint32_t>(HWC2::DisplayConnectionType::External);
else
return HWC2::Error::BadConfig;
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetActiveConfigWithConstraints(
hwc2_config_t config,
hwc_vsync_period_change_constraints_t *vsyncPeriodChangeConstraints,
hwc_vsync_period_change_timeline_t *outTimeline) {
if (type_ == HWC2::DisplayType::Virtual) {
return HWC2::Error::None;
}
if (vsyncPeriodChangeConstraints == nullptr || outTimeline == nullptr) {
return HWC2::Error::BadParameter;
}
uint32_t current_vsync_period{};
GetDisplayVsyncPeriod(&current_vsync_period);
if (vsyncPeriodChangeConstraints->seamlessRequired) {
return HWC2::Error::SeamlessNotAllowed;
}
outTimeline->refreshTimeNanos = vsyncPeriodChangeConstraints
->desiredTimeNanos -
current_vsync_period;
auto ret = SetActiveConfigInternal(config, outTimeline->refreshTimeNanos);
if (ret != HWC2::Error::None) {
return ret;
}
outTimeline->refreshRequired = true;
outTimeline->newVsyncAppliedTimeNanos = vsyncPeriodChangeConstraints
->desiredTimeNanos;
vsync_worker_->SetVsyncTimestampTracking(true);
return HWC2::Error::None;
}
#endif
#if __ANDROID_API__ > 27
HWC2::Error HwcDisplay::GetRenderIntents(
int32_t mode, uint32_t *outNumIntents,
int32_t * /*android_render_intent_v1_1_t*/ outIntents) {
if (mode != HAL_COLOR_MODE_NATIVE) {
return HWC2::Error::BadParameter;
}
if (outIntents == nullptr) {
*outNumIntents = 1;
return HWC2::Error::None;
}
*outNumIntents = 1;
outIntents[0] = HAL_RENDER_INTENT_COLORIMETRIC;
return HWC2::Error::None;
}
HWC2::Error HwcDisplay::SetColorModeWithIntent(int32_t mode, int32_t intent) {
if (intent < HAL_RENDER_INTENT_COLORIMETRIC ||
intent > HAL_RENDER_INTENT_TONE_MAP_ENHANCE)
return HWC2::Error::BadParameter;
if (intent != HAL_RENDER_INTENT_COLORIMETRIC)
return HWC2::Error::Unsupported;
auto err = SetColorMode(mode);
if (err != HWC2::Error::None) return err;
return HWC2::Error::None;
}
#endif /* __ANDROID_API__ > 27 */
const Backend *HwcDisplay::backend() const {
return backend_.get();
}
void HwcDisplay::set_backend(std::unique_ptr<Backend> backend) {
backend_ = std::move(backend);
}
bool HwcDisplay::NeedsClientLayerUpdate() const {
return std::any_of(layers_.begin(), layers_.end(), [](const auto &pair) {
const auto &layer = pair.second;
return layer.GetSfType() == HWC2::Composition::Client ||
layer.GetValidatedType() == HWC2::Composition::Client;
});
}
} // namespace android
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