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/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_SF_HWCOMPOSER_H
#define ANDROID_SF_HWCOMPOSER_H
#include <cstdint>
#include <future>
#include <memory>
#include <mutex>
#include <optional>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <android-base/thread_annotations.h>
#include <ui/FenceTime.h>
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"
#pragma clang diagnostic ignored "-Wextra"
#include <ui/GraphicTypes.h>
#pragma clang diagnostic pop // ignored "-Wconversion -Wextra"
#include <utils/StrongPointer.h>
#include <utils/Timers.h>
#include "DisplayIdentification.h"
#include "DisplayMode.h"
#include "HWC2.h"
#include "Hal.h"
namespace android {
namespace hal = hardware::graphics::composer::hal;
struct DisplayedFrameStats;
class GraphicBuffer;
class TestableSurfaceFlinger;
struct CompositionInfo;
namespace Hwc2 {
class Composer;
} // namespace Hwc2
namespace compositionengine {
class Output;
} // namespace compositionengine
struct KnownHWCGenericLayerMetadata {
const char* name;
const uint32_t id;
};
// See the comment for SurfaceFlinger::getHwComposer for the thread safety rules for accessing
// this class.
class HWComposer {
public:
struct DeviceRequestedChanges {
using ChangedTypes = std::unordered_map<HWC2::Layer*, hal::Composition>;
using ClientTargetProperty = hal::ClientTargetProperty;
using DisplayRequests = hal::DisplayRequest;
using LayerRequests = std::unordered_map<HWC2::Layer*, hal::LayerRequest>;
ChangedTypes changedTypes;
DisplayRequests displayRequests;
LayerRequests layerRequests;
ClientTargetProperty clientTargetProperty;
};
struct HWCDisplayMode {
hal::HWConfigId hwcId;
int32_t width = -1;
int32_t height = -1;
nsecs_t vsyncPeriod = -1;
int32_t dpiX = -1;
int32_t dpiY = -1;
int32_t configGroup = -1;
friend std::ostream& operator<<(std::ostream& os, const HWCDisplayMode& mode) {
return os << "id=" << mode.hwcId << " res=" << mode.width << "x" << mode.height
<< " vsyncPeriod=" << mode.vsyncPeriod << " dpi=" << mode.dpiX << "x"
<< mode.dpiY << " group=" << mode.configGroup;
}
};
virtual ~HWComposer();
virtual void setCallback(HWC2::ComposerCallback*) = 0;
virtual bool getDisplayIdentificationData(hal::HWDisplayId, uint8_t* outPort,
DisplayIdentificationData* outData) const = 0;
virtual bool hasCapability(hal::Capability) const = 0;
virtual bool hasDisplayCapability(HalDisplayId, hal::DisplayCapability) const = 0;
virtual size_t getMaxVirtualDisplayCount() const = 0;
virtual size_t getMaxVirtualDisplayDimension() const = 0;
// Attempts to allocate a virtual display on the HWC. The maximum number of virtual displays
// supported by the HWC can be queried in advance, but allocation may fail for other reasons.
// For virtualized compositors, the PhysicalDisplayId is a hint that this virtual display is
// a mirror of a physical display, and that the screen should be captured by the host rather
// than guest compositor.
virtual bool allocateVirtualDisplay(HalVirtualDisplayId, ui::Size, ui::PixelFormat*,
std::optional<PhysicalDisplayId> mirror) = 0;
virtual void allocatePhysicalDisplay(hal::HWDisplayId, PhysicalDisplayId) = 0;
// Attempts to create a new layer on this display
virtual std::shared_ptr<HWC2::Layer> createLayer(HalDisplayId) = 0;
// Gets any required composition change requests from the HWC device.
//
// Note that frameUsesClientComposition must be set correctly based on
// whether the current frame appears to use client composition. If it is
// false some internal optimizations are allowed to present the display
// with fewer handshakes, but this does not work if client composition is
// expected.
virtual status_t getDeviceCompositionChanges(
HalDisplayId, bool frameUsesClientComposition,
std::chrono::steady_clock::time_point earliestPresentTime,
const std::shared_ptr<FenceTime>& previousPresentFence,
std::optional<DeviceRequestedChanges>* outChanges) = 0;
virtual status_t setClientTarget(HalDisplayId, uint32_t slot, const sp<Fence>& acquireFence,
const sp<GraphicBuffer>& target, ui::Dataspace) = 0;
// Present layers to the display and read releaseFences.
virtual status_t presentAndGetReleaseFences(
HalDisplayId, std::chrono::steady_clock::time_point earliestPresentTime,
const std::shared_ptr<FenceTime>& previousPresentFence) = 0;
// set power mode
virtual status_t setPowerMode(PhysicalDisplayId, hal::PowerMode) = 0;
// Sets a color transform to be applied to the result of composition
virtual status_t setColorTransform(HalDisplayId, const mat4& transform) = 0;
// reset state when a display is disconnected
virtual void disconnectDisplay(HalDisplayId) = 0;
// get the present fence received from the last call to present.
virtual sp<Fence> getPresentFence(HalDisplayId) const = 0;
// Get last release fence for the given layer
virtual sp<Fence> getLayerReleaseFence(HalDisplayId, HWC2::Layer*) const = 0;
// Set the output buffer and acquire fence for a virtual display.
virtual status_t setOutputBuffer(HalVirtualDisplayId, const sp<Fence>& acquireFence,
const sp<GraphicBuffer>& buffer) = 0;
// After SurfaceFlinger has retrieved the release fences for all the frames,
// it can call this to clear the shared pointers in the release fence map
virtual void clearReleaseFences(HalDisplayId) = 0;
// Fetches the HDR capabilities of the given display
virtual status_t getHdrCapabilities(HalDisplayId, HdrCapabilities* outCapabilities) = 0;
virtual int32_t getSupportedPerFrameMetadata(HalDisplayId) const = 0;
// Returns the available RenderIntent of the given display.
virtual std::vector<ui::RenderIntent> getRenderIntents(HalDisplayId, ui::ColorMode) const = 0;
virtual mat4 getDataspaceSaturationMatrix(HalDisplayId, ui::Dataspace) = 0;
// Returns the attributes of the color sampling engine.
virtual status_t getDisplayedContentSamplingAttributes(HalDisplayId, ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask) = 0;
virtual status_t setDisplayContentSamplingEnabled(HalDisplayId, bool enabled,
uint8_t componentMask,
uint64_t maxFrames) = 0;
virtual status_t getDisplayedContentSample(HalDisplayId, uint64_t maxFrames, uint64_t timestamp,
DisplayedFrameStats* outStats) = 0;
// Sets the brightness of a display.
virtual std::future<status_t> setDisplayBrightness(PhysicalDisplayId, float brightness) = 0;
// Events handling ---------------------------------------------------------
// Returns stable display ID (and display name on connection of new or previously disconnected
// display), or std::nullopt if hotplug event was ignored.
// This function is called from SurfaceFlinger.
virtual std::optional<DisplayIdentificationInfo> onHotplug(hal::HWDisplayId,
hal::Connection) = 0;
// If true we'll update the DeviceProductInfo on subsequent hotplug connected events.
// TODO(b/157555476): Remove when the framework has proper support for headless mode
virtual bool updatesDeviceProductInfoOnHotplugReconnect() const = 0;
virtual bool onVsync(hal::HWDisplayId, int64_t timestamp) = 0;
virtual void setVsyncEnabled(PhysicalDisplayId, hal::Vsync enabled) = 0;
virtual bool isConnected(PhysicalDisplayId) const = 0;
virtual std::vector<HWCDisplayMode> getModes(PhysicalDisplayId) const = 0;
virtual std::optional<hal::HWConfigId> getActiveMode(PhysicalDisplayId) const = 0;
virtual std::vector<ui::ColorMode> getColorModes(PhysicalDisplayId) const = 0;
virtual status_t setActiveColorMode(PhysicalDisplayId, ui::ColorMode mode,
ui::RenderIntent) = 0;
// Composer 2.4
virtual ui::DisplayConnectionType getDisplayConnectionType(PhysicalDisplayId) const = 0;
virtual bool isVsyncPeriodSwitchSupported(PhysicalDisplayId) const = 0;
virtual status_t getDisplayVsyncPeriod(PhysicalDisplayId displayId,
nsecs_t* outVsyncPeriod) const = 0;
virtual status_t setActiveModeWithConstraints(PhysicalDisplayId, hal::HWConfigId,
const hal::VsyncPeriodChangeConstraints&,
hal::VsyncPeriodChangeTimeline* outTimeline) = 0;
virtual status_t setAutoLowLatencyMode(PhysicalDisplayId, bool on) = 0;
virtual status_t getSupportedContentTypes(
PhysicalDisplayId, std::vector<hal::ContentType>* outSupportedContentTypes) = 0;
virtual status_t setContentType(PhysicalDisplayId, hal::ContentType) = 0;
virtual const std::unordered_map<std::string, bool>& getSupportedLayerGenericMetadata()
const = 0;
// for debugging ----------------------------------------------------------
virtual void dump(std::string& out) const = 0;
virtual Hwc2::Composer* getComposer() const = 0;
// TODO(b/74619554): Remove special cases for internal/external display.
virtual std::optional<hal::HWDisplayId> getInternalHwcDisplayId() const = 0;
virtual std::optional<hal::HWDisplayId> getExternalHwcDisplayId() const = 0;
virtual std::optional<PhysicalDisplayId> toPhysicalDisplayId(hal::HWDisplayId) const = 0;
virtual std::optional<hal::HWDisplayId> fromPhysicalDisplayId(PhysicalDisplayId) const = 0;
};
namespace impl {
class HWComposer final : public android::HWComposer {
public:
explicit HWComposer(std::unique_ptr<Hwc2::Composer> composer);
explicit HWComposer(const std::string& composerServiceName);
~HWComposer() override;
void setCallback(HWC2::ComposerCallback*) override;
bool getDisplayIdentificationData(hal::HWDisplayId, uint8_t* outPort,
DisplayIdentificationData* outData) const override;
bool hasCapability(hal::Capability) const override;
bool hasDisplayCapability(HalDisplayId, hal::DisplayCapability) const override;
size_t getMaxVirtualDisplayCount() const override;
size_t getMaxVirtualDisplayDimension() const override;
bool allocateVirtualDisplay(HalVirtualDisplayId, ui::Size, ui::PixelFormat*,
std::optional<PhysicalDisplayId>) override;
// Called from SurfaceFlinger, when the state for a new physical display needs to be recreated.
void allocatePhysicalDisplay(hal::HWDisplayId, PhysicalDisplayId) override;
// Attempts to create a new layer on this display
std::shared_ptr<HWC2::Layer> createLayer(HalDisplayId) override;
status_t getDeviceCompositionChanges(
HalDisplayId, bool frameUsesClientComposition,
std::chrono::steady_clock::time_point earliestPresentTime,
const std::shared_ptr<FenceTime>& previousPresentFence,
std::optional<DeviceRequestedChanges>* outChanges) override;
status_t setClientTarget(HalDisplayId, uint32_t slot, const sp<Fence>& acquireFence,
const sp<GraphicBuffer>& target, ui::Dataspace) override;
// Present layers to the display and read releaseFences.
status_t presentAndGetReleaseFences(
HalDisplayId, std::chrono::steady_clock::time_point earliestPresentTime,
const std::shared_ptr<FenceTime>& previousPresentFence) override;
// set power mode
status_t setPowerMode(PhysicalDisplayId, hal::PowerMode mode) override;
// Sets a color transform to be applied to the result of composition
status_t setColorTransform(HalDisplayId, const mat4& transform) override;
// reset state when a display is disconnected
void disconnectDisplay(HalDisplayId) override;
// get the present fence received from the last call to present.
sp<Fence> getPresentFence(HalDisplayId) const override;
// Get last release fence for the given layer
sp<Fence> getLayerReleaseFence(HalDisplayId, HWC2::Layer*) const override;
// Set the output buffer and acquire fence for a virtual display.
status_t setOutputBuffer(HalVirtualDisplayId, const sp<Fence>& acquireFence,
const sp<GraphicBuffer>& buffer) override;
// After SurfaceFlinger has retrieved the release fences for all the frames,
// it can call this to clear the shared pointers in the release fence map
void clearReleaseFences(HalDisplayId) override;
// Fetches the HDR capabilities of the given display
status_t getHdrCapabilities(HalDisplayId, HdrCapabilities* outCapabilities) override;
int32_t getSupportedPerFrameMetadata(HalDisplayId) const override;
// Returns the available RenderIntent of the given display.
std::vector<ui::RenderIntent> getRenderIntents(HalDisplayId, ui::ColorMode) const override;
mat4 getDataspaceSaturationMatrix(HalDisplayId, ui::Dataspace) override;
// Returns the attributes of the color sampling engine.
status_t getDisplayedContentSamplingAttributes(HalDisplayId, ui::PixelFormat* outFormat,
ui::Dataspace* outDataspace,
uint8_t* outComponentMask) override;
status_t setDisplayContentSamplingEnabled(HalDisplayId, bool enabled, uint8_t componentMask,
uint64_t maxFrames) override;
status_t getDisplayedContentSample(HalDisplayId, uint64_t maxFrames, uint64_t timestamp,
DisplayedFrameStats* outStats) override;
std::future<status_t> setDisplayBrightness(PhysicalDisplayId, float brightness) override;
// Events handling ---------------------------------------------------------
// Returns PhysicalDisplayId (and display name on connection of new or previously disconnected
// display), or std::nullopt if hotplug event was ignored.
std::optional<DisplayIdentificationInfo> onHotplug(hal::HWDisplayId, hal::Connection) override;
bool updatesDeviceProductInfoOnHotplugReconnect() const override;
bool onVsync(hal::HWDisplayId, int64_t timestamp) override;
void setVsyncEnabled(PhysicalDisplayId, hal::Vsync enabled) override;
bool isConnected(PhysicalDisplayId) const override;
std::vector<HWCDisplayMode> getModes(PhysicalDisplayId) const override;
std::optional<hal::HWConfigId> getActiveMode(PhysicalDisplayId) const override;
std::vector<ui::ColorMode> getColorModes(PhysicalDisplayId) const override;
status_t setActiveColorMode(PhysicalDisplayId, ui::ColorMode, ui::RenderIntent) override;
// Composer 2.4
ui::DisplayConnectionType getDisplayConnectionType(PhysicalDisplayId) const override;
bool isVsyncPeriodSwitchSupported(PhysicalDisplayId) const override;
status_t getDisplayVsyncPeriod(PhysicalDisplayId displayId,
nsecs_t* outVsyncPeriod) const override;
status_t setActiveModeWithConstraints(PhysicalDisplayId, hal::HWConfigId,
const hal::VsyncPeriodChangeConstraints&,
hal::VsyncPeriodChangeTimeline* outTimeline) override;
status_t setAutoLowLatencyMode(PhysicalDisplayId, bool) override;
status_t getSupportedContentTypes(PhysicalDisplayId, std::vector<hal::ContentType>*) override;
status_t setContentType(PhysicalDisplayId, hal::ContentType) override;
const std::unordered_map<std::string, bool>& getSupportedLayerGenericMetadata() const override;
// for debugging ----------------------------------------------------------
void dump(std::string& out) const override;
Hwc2::Composer* getComposer() const override { return mComposer.get(); }
// TODO(b/74619554): Remove special cases for internal/external display.
std::optional<hal::HWDisplayId> getInternalHwcDisplayId() const override {
return mInternalHwcDisplayId;
}
std::optional<hal::HWDisplayId> getExternalHwcDisplayId() const override {
return mExternalHwcDisplayId;
}
std::optional<PhysicalDisplayId> toPhysicalDisplayId(hal::HWDisplayId) const override;
std::optional<hal::HWDisplayId> fromPhysicalDisplayId(PhysicalDisplayId) const override;
private:
// For unit tests
friend TestableSurfaceFlinger;
struct DisplayData {
bool isVirtual = false;
std::unique_ptr<HWC2::Display> hwcDisplay;
sp<Fence> lastPresentFence = Fence::NO_FENCE; // signals when the last set op retires
std::unordered_map<HWC2::Layer*, sp<Fence>> releaseFences;
buffer_handle_t outbufHandle = nullptr;
sp<Fence> outbufAcquireFence = Fence::NO_FENCE;
bool validateWasSkipped;
hal::Error presentError;
bool vsyncTraceToggle = false;
std::mutex vsyncEnabledLock;
hal::Vsync vsyncEnabled GUARDED_BY(vsyncEnabledLock) = hal::Vsync::DISABLE;
nsecs_t lastHwVsync = 0;
};
std::optional<DisplayIdentificationInfo> onHotplugConnect(hal::HWDisplayId);
std::optional<DisplayIdentificationInfo> onHotplugDisconnect(hal::HWDisplayId);
bool shouldIgnoreHotplugConnect(hal::HWDisplayId, bool hasDisplayIdentificationData) const;
int32_t getAttribute(hal::HWDisplayId hwcDisplayId, hal::HWConfigId configId,
hal::Attribute attribute) const;
void loadCapabilities();
void loadLayerMetadataSupport();
std::unordered_map<HalDisplayId, DisplayData> mDisplayData;
std::unique_ptr<android::Hwc2::Composer> mComposer;
std::unordered_set<hal::Capability> mCapabilities;
std::unordered_map<std::string, bool> mSupportedLayerGenericMetadata;
bool mRegisteredCallback = false;
std::unordered_map<hal::HWDisplayId, PhysicalDisplayId> mPhysicalDisplayIdMap;
std::optional<hal::HWDisplayId> mInternalHwcDisplayId;
std::optional<hal::HWDisplayId> mExternalHwcDisplayId;
bool mHasMultiDisplaySupport = false;
const size_t mMaxVirtualDisplayDimension;
const bool mUpdateDeviceProductInfoOnHotplugReconnect;
};
} // namespace impl
} // namespace android
#endif // ANDROID_SF_HWCOMPOSER_H