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/*
* Copyright 2018 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.
*/
#include "EmuHWC2.h"
//#define LOG_NDEBUG 0
//#define LOG_NNDEBUG 0
#undef LOG_TAG
#define LOG_TAG "EmuHWC2"
#include <errno.h>
#include <cutils/properties.h>
#include <log/log.h>
#include <sync/sync.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <ui/GraphicBuffer.h>
#include <ui/GraphicBufferAllocator.h>
#include "../egl/goldfish_sync.h"
#include "ThreadInfo.h"
#if defined(LOG_NNDEBUG) && LOG_NNDEBUG == 0
#define ALOGVV ALOGV
#else
#define ALOGVV(...) ((void)0)
#endif
template <typename PFN, typename T>
static hwc2_function_pointer_t asFP(T function)
{
static_assert(std::is_same<PFN, T>::value, "Incompatible function pointer");
return reinterpret_cast<hwc2_function_pointer_t>(function);
}
static std::unique_ptr<HostConnection> sHostCon;
static HostConnection* createOrGetHostConnection() {
if (!sHostCon) {
sHostCon = HostConnection::createUnique();
}
return sHostCon.get();
}
#define DEFINE_AND_VALIDATE_HOST_CONNECTION \
HostConnection *hostCon = createOrGetHostConnection(); \
if (!hostCon) { \
ALOGE("EmuHWC2: Failed to get host connection\n"); \
return Error::NoResources; \
} \
ExtendedRCEncoderContext *rcEnc = hostCon->rcEncoder(); \
if (!rcEnc) { \
ALOGE("EmuHWC2: Failed to get renderControl encoder context\n"); \
return Error::NoResources; \
}
using namespace HWC2;
namespace android {
EmuHWC2::EmuHWC2()
: mStateMutex()
{
common.tag = HARDWARE_DEVICE_TAG;
common.version = HWC_DEVICE_API_VERSION_2_0;
common.close = closeHook;
getCapabilities = getCapabilitiesHook;
getFunction = getFunctionHook;
populateCapabilities();
initDisplayParameters();
}
Error EmuHWC2::initDisplayParameters() {
DEFINE_AND_VALIDATE_HOST_CONNECTION
hostCon->lock();
mDisplayWidth = rcEnc->rcGetFBParam(rcEnc, FB_WIDTH);
mDisplayHeight = rcEnc->rcGetFBParam(rcEnc, FB_HEIGHT);
mDisplayDpiX = rcEnc->rcGetFBParam(rcEnc, FB_XDPI);
mDisplayDpiY = rcEnc->rcGetFBParam(rcEnc, FB_YDPI);
hostCon->unlock();
return HWC2::Error::None;
}
void EmuHWC2::doGetCapabilities(uint32_t* outCount, int32_t* outCapabilities) {
if (outCapabilities == nullptr) {
*outCount = mCapabilities.size();
return;
}
auto capabilityIter = mCapabilities.cbegin();
for (size_t i = 0; i < *outCount; ++i) {
if (capabilityIter == mCapabilities.cend()) {
return;
}
outCapabilities[i] = static_cast<int32_t>(*capabilityIter);
++capabilityIter;
}
}
hwc2_function_pointer_t EmuHWC2::doGetFunction(
FunctionDescriptor descriptor) {
switch(descriptor) {
case FunctionDescriptor::CreateVirtualDisplay:
return asFP<HWC2_PFN_CREATE_VIRTUAL_DISPLAY>(
createVirtualDisplayHook);
case FunctionDescriptor::DestroyVirtualDisplay:
return asFP<HWC2_PFN_DESTROY_VIRTUAL_DISPLAY>(
destroyVirtualDisplayHook);
case FunctionDescriptor::Dump:
return asFP<HWC2_PFN_DUMP>(dumpHook);
case FunctionDescriptor::GetMaxVirtualDisplayCount:
return asFP<HWC2_PFN_GET_MAX_VIRTUAL_DISPLAY_COUNT>(
getMaxVirtualDisplayCountHook);
case FunctionDescriptor::RegisterCallback:
return asFP<HWC2_PFN_REGISTER_CALLBACK>(registerCallbackHook);
// Display functions
case FunctionDescriptor::AcceptDisplayChanges:
return asFP<HWC2_PFN_ACCEPT_DISPLAY_CHANGES>(
displayHook<decltype(&Display::acceptChanges),
&Display::acceptChanges>);
case FunctionDescriptor::CreateLayer:
return asFP<HWC2_PFN_CREATE_LAYER>(
displayHook<decltype(&Display::createLayer),
&Display::createLayer, hwc2_layer_t*>);
case FunctionDescriptor::DestroyLayer:
return asFP<HWC2_PFN_DESTROY_LAYER>(
displayHook<decltype(&Display::destroyLayer),
&Display::destroyLayer, hwc2_layer_t>);
case FunctionDescriptor::GetActiveConfig:
return asFP<HWC2_PFN_GET_ACTIVE_CONFIG>(
displayHook<decltype(&Display::getActiveConfig),
&Display::getActiveConfig, hwc2_config_t*>);
case FunctionDescriptor::GetChangedCompositionTypes:
return asFP<HWC2_PFN_GET_CHANGED_COMPOSITION_TYPES>(
displayHook<decltype(&Display::getChangedCompositionTypes),
&Display::getChangedCompositionTypes, uint32_t*,
hwc2_layer_t*, int32_t*>);
case FunctionDescriptor::GetColorModes:
return asFP<HWC2_PFN_GET_COLOR_MODES>(
displayHook<decltype(&Display::getColorModes),
&Display::getColorModes, uint32_t*, int32_t*>);
case FunctionDescriptor::GetDisplayAttribute:
return asFP<HWC2_PFN_GET_DISPLAY_ATTRIBUTE>(
displayHook<decltype(&Display::getDisplayAttribute),
&Display::getDisplayAttribute, hwc2_config_t,
int32_t, int32_t*>);
case FunctionDescriptor::GetDisplayConfigs:
return asFP<HWC2_PFN_GET_DISPLAY_CONFIGS>(
displayHook<decltype(&Display::getConfigs),
&Display::getConfigs, uint32_t*, hwc2_config_t*>);
case FunctionDescriptor::GetDisplayName:
return asFP<HWC2_PFN_GET_DISPLAY_NAME>(
displayHook<decltype(&Display::getName),
&Display::getName, uint32_t*, char*>);
case FunctionDescriptor::GetDisplayRequests:
return asFP<HWC2_PFN_GET_DISPLAY_REQUESTS>(
displayHook<decltype(&Display::getRequests),
&Display::getRequests, int32_t*, uint32_t*, hwc2_layer_t*,
int32_t*>);
case FunctionDescriptor::GetDisplayType:
return asFP<HWC2_PFN_GET_DISPLAY_TYPE>(
displayHook<decltype(&Display::getType),
&Display::getType, int32_t*>);
case FunctionDescriptor::GetDozeSupport:
return asFP<HWC2_PFN_GET_DOZE_SUPPORT>(
displayHook<decltype(&Display::getDozeSupport),
&Display::getDozeSupport, int32_t*>);
case FunctionDescriptor::GetHdrCapabilities:
return asFP<HWC2_PFN_GET_HDR_CAPABILITIES>(
displayHook<decltype(&Display::getHdrCapabilities),
&Display::getHdrCapabilities, uint32_t*, int32_t*, float*,
float*, float*>);
case FunctionDescriptor::GetReleaseFences:
return asFP<HWC2_PFN_GET_RELEASE_FENCES>(
displayHook<decltype(&Display::getReleaseFences),
&Display::getReleaseFences, uint32_t*, hwc2_layer_t*,
int32_t*>);
case FunctionDescriptor::PresentDisplay:
return asFP<HWC2_PFN_PRESENT_DISPLAY>(
displayHook<decltype(&Display::present),
&Display::present, int32_t*>);
case FunctionDescriptor::SetActiveConfig:
return asFP<HWC2_PFN_SET_ACTIVE_CONFIG>(
displayHook<decltype(&Display::setActiveConfig),
&Display::setActiveConfig, hwc2_config_t>);
case FunctionDescriptor::SetClientTarget:
return asFP<HWC2_PFN_SET_CLIENT_TARGET>(
displayHook<decltype(&Display::setClientTarget),
&Display::setClientTarget, buffer_handle_t, int32_t,
int32_t, hwc_region_t>);
case FunctionDescriptor::SetColorMode:
return asFP<HWC2_PFN_SET_COLOR_MODE>(
displayHook<decltype(&Display::setColorMode),
&Display::setColorMode, int32_t>);
case FunctionDescriptor::SetColorTransform:
return asFP<HWC2_PFN_SET_COLOR_TRANSFORM>(
displayHook<decltype(&Display::setColorTransform),
&Display::setColorTransform, const float*, int32_t>);
case FunctionDescriptor::SetOutputBuffer:
return asFP<HWC2_PFN_SET_OUTPUT_BUFFER>(
displayHook<decltype(&Display::setOutputBuffer),
&Display::setOutputBuffer, buffer_handle_t, int32_t>);
case FunctionDescriptor::SetPowerMode:
return asFP<HWC2_PFN_SET_POWER_MODE>(
displayHook<decltype(&Display::setPowerMode),
&Display::setPowerMode, int32_t>);
case FunctionDescriptor::SetVsyncEnabled:
return asFP<HWC2_PFN_SET_VSYNC_ENABLED>(
displayHook<decltype(&Display::setVsyncEnabled),
&Display::setVsyncEnabled, int32_t>);
case FunctionDescriptor::ValidateDisplay:
return asFP<HWC2_PFN_VALIDATE_DISPLAY>(
displayHook<decltype(&Display::validate),
&Display::validate, uint32_t*, uint32_t*>);
case FunctionDescriptor::GetClientTargetSupport:
return asFP<HWC2_PFN_GET_CLIENT_TARGET_SUPPORT>(
displayHook<decltype(&Display::getClientTargetSupport),
&Display::getClientTargetSupport, uint32_t, uint32_t,
int32_t, int32_t>);
// 2.3 required functions
case FunctionDescriptor::GetDisplayIdentificationData:
return asFP<HWC2_PFN_GET_DISPLAY_IDENTIFICATION_DATA>(
displayHook<decltype(&Display::getDisplayIdentificationData),
&Display::getDisplayIdentificationData, uint8_t*, uint32_t*, uint8_t*>);
case FunctionDescriptor::GetDisplayCapabilities:
return asFP<HWC2_PFN_GET_DISPLAY_CAPABILITIES>(
displayHook<decltype(&Display::getDisplayCapabilities),
&Display::getDisplayCapabilities, uint32_t*, uint32_t*>);
case FunctionDescriptor::GetDisplayBrightnessSupport:
return asFP<HWC2_PFN_GET_DISPLAY_BRIGHTNESS_SUPPORT>(
displayHook<decltype(&Display::getDisplayBrightnessSupport),
&Display::getDisplayBrightnessSupport, bool*>);
case FunctionDescriptor::SetDisplayBrightness:
return asFP<HWC2_PFN_SET_DISPLAY_BRIGHTNESS>(
displayHook<decltype(&Display::setDisplayBrightness),
&Display::setDisplayBrightness, float>);
// Layer functions
case FunctionDescriptor::SetCursorPosition:
return asFP<HWC2_PFN_SET_CURSOR_POSITION>(
layerHook<decltype(&Layer::setCursorPosition),
&Layer::setCursorPosition, int32_t, int32_t>);
case FunctionDescriptor::SetLayerBuffer:
return asFP<HWC2_PFN_SET_LAYER_BUFFER>(
layerHook<decltype(&Layer::setBuffer), &Layer::setBuffer,
buffer_handle_t, int32_t>);
case FunctionDescriptor::SetLayerSurfaceDamage:
return asFP<HWC2_PFN_SET_LAYER_SURFACE_DAMAGE>(
layerHook<decltype(&Layer::setSurfaceDamage),
&Layer::setSurfaceDamage, hwc_region_t>);
// Layer state functions
case FunctionDescriptor::SetLayerBlendMode:
return asFP<HWC2_PFN_SET_LAYER_BLEND_MODE>(
layerHook<decltype(&Layer::setBlendMode),
&Layer::setBlendMode, int32_t>);
case FunctionDescriptor::SetLayerColor:
return asFP<HWC2_PFN_SET_LAYER_COLOR>(
layerHook<decltype(&Layer::setColor), &Layer::setColor,
hwc_color_t>);
case FunctionDescriptor::SetLayerCompositionType:
return asFP<HWC2_PFN_SET_LAYER_COMPOSITION_TYPE>(
layerHook<decltype(&Layer::setCompositionType),
&Layer::setCompositionType, int32_t>);
case FunctionDescriptor::SetLayerDataspace:
return asFP<HWC2_PFN_SET_LAYER_DATASPACE>(
layerHook<decltype(&Layer::setDataspace),
&Layer::setDataspace, int32_t>);
case FunctionDescriptor::SetLayerDisplayFrame:
return asFP<HWC2_PFN_SET_LAYER_DISPLAY_FRAME>(
layerHook<decltype(&Layer::setDisplayFrame),
&Layer::setDisplayFrame, hwc_rect_t>);
case FunctionDescriptor::SetLayerPlaneAlpha:
return asFP<HWC2_PFN_SET_LAYER_PLANE_ALPHA>(
layerHook<decltype(&Layer::setPlaneAlpha),
&Layer::setPlaneAlpha, float>);
case FunctionDescriptor::SetLayerSidebandStream:
return asFP<HWC2_PFN_SET_LAYER_SIDEBAND_STREAM>(
layerHook<decltype(&Layer::setSidebandStream),
&Layer::setSidebandStream, const native_handle_t*>);
case FunctionDescriptor::SetLayerSourceCrop:
return asFP<HWC2_PFN_SET_LAYER_SOURCE_CROP>(
layerHook<decltype(&Layer::setSourceCrop),
&Layer::setSourceCrop, hwc_frect_t>);
case FunctionDescriptor::SetLayerTransform:
return asFP<HWC2_PFN_SET_LAYER_TRANSFORM>(
layerHook<decltype(&Layer::setTransform),
&Layer::setTransform, int32_t>);
case FunctionDescriptor::SetLayerVisibleRegion:
return asFP<HWC2_PFN_SET_LAYER_VISIBLE_REGION>(
layerHook<decltype(&Layer::setVisibleRegion),
&Layer::setVisibleRegion, hwc_region_t>);
case FunctionDescriptor::SetLayerZOrder:
return asFP<HWC2_PFN_SET_LAYER_Z_ORDER>(
displayHook<decltype(&Display::updateLayerZ),
&Display::updateLayerZ, hwc2_layer_t, uint32_t>);
default:
ALOGE("doGetFunction: Unknown function descriptor: %d (%s)",
static_cast<int32_t>(descriptor),
to_string(descriptor).c_str());
return nullptr;
}
}
// Device functions
Error EmuHWC2::createVirtualDisplay(uint32_t /*width*/, uint32_t /*height*/,
int32_t* /*format*/, hwc2_display_t* /*outDisplay*/) {
ALOGVV("%s", __FUNCTION__);
//TODO: VirtualDisplay support
return Error::None;
}
Error EmuHWC2::destroyVirtualDisplay(hwc2_display_t /*displayId*/) {
ALOGVV("%s", __FUNCTION__);
//TODO: VirtualDisplay support
return Error::None;
}
void EmuHWC2::dump(uint32_t* /*outSize*/, char* /*outBuffer*/) {
ALOGVV("%s", __FUNCTION__);
//TODO:
return;
}
uint32_t EmuHWC2::getMaxVirtualDisplayCount() {
ALOGVV("%s", __FUNCTION__);
//TODO: VirtualDisplay support
return 0;
}
static bool isValid(Callback descriptor) {
switch (descriptor) {
case Callback::Hotplug: // Fall-through
case Callback::Refresh: // Fall-through
case Callback::Vsync: return true;
default: return false;
}
}
Error EmuHWC2::registerCallback(Callback descriptor,
hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer) {
ALOGVV("%s", __FUNCTION__);
if (!isValid(descriptor)) {
ALOGE("registerCallback: Unkown function descriptor: %d",
static_cast<int32_t>(descriptor));
return Error::BadParameter;
}
ALOGV("registerCallback(%s, %p, %p)", to_string(descriptor).c_str(),
callbackData, pointer);
std::unique_lock<std::mutex> lock(mStateMutex);
if (pointer != nullptr) {
mCallbacks[descriptor] = {callbackData, pointer};
}
else {
ALOGV("unregisterCallback(%s)", to_string(descriptor).c_str());
mCallbacks.erase(descriptor);
return Error::None;
}
// Callback without the state lock held
if (descriptor == Callback::Hotplug) {
lock.unlock();
auto hotplug = reinterpret_cast<HWC2_PFN_VSYNC>(pointer);
for (const auto& iter : mDisplays) {
hotplug(callbackData, iter.first, static_cast<int32_t>(Connection::Connected));
}
}
return Error::None;
}
const native_handle_t* EmuHWC2::allocateDisplayColorBuffer(int width, int height) {
const uint32_t layerCount = 1;
const uint64_t graphicBufferId = 0; // not used
buffer_handle_t h;
uint32_t stride;
if (GraphicBufferAllocator::get().allocate(
width, height,
PIXEL_FORMAT_RGBA_8888,
layerCount,
(GraphicBuffer::USAGE_HW_COMPOSER | GraphicBuffer::USAGE_HW_RENDER),
&h, &stride,
graphicBufferId, "EmuHWC2") == OK) {
return static_cast<const native_handle_t*>(h);
} else {
return nullptr;
}
}
void EmuHWC2::freeDisplayColorBuffer(const native_handle_t* h) {
GraphicBufferAllocator::get().free(h);
}
// Display functions
#define VSYNC_PERIOD_PROP "ro.kernel.qemu.vsync"
static int getVsyncPeriodFromProperty() {
char displaysValue[PROPERTY_VALUE_MAX] = "";
property_get(VSYNC_PERIOD_PROP, displaysValue, "");
bool isValid = displaysValue[0] != '\0';
if (!isValid) return 60;
long vsyncPeriodParsed = strtol(displaysValue, 0, 10);
// On failure, strtol returns 0. Also, there's no reason to have 0
// as the vsync period.
if (!vsyncPeriodParsed) return 60;
return static_cast<int>(vsyncPeriodParsed);
}
std::atomic<hwc2_display_t> EmuHWC2::Display::sNextId(0);
EmuHWC2::Display::Display(EmuHWC2& device, DisplayType type, int width, int height)
: mDevice(device),
mId(sNextId++),
mHostDisplayId(0),
mName(),
mType(type),
mPowerMode(PowerMode::Off),
mVsyncEnabled(Vsync::Invalid),
mVsyncPeriod(1000*1000*1000/getVsyncPeriodFromProperty()), // vsync is 60 hz
mVsyncThread(*this),
mClientTarget(),
mChanges(),
mLayers(),
mReleaseLayerIds(),
mReleaseFences(),
mConfigs(),
mActiveConfig(nullptr),
mColorModes(),
mSetColorTransform(false),
mStateMutex() {
mVsyncThread.run("", ANDROID_PRIORITY_URGENT_DISPLAY);
mTargetCb = device.allocateDisplayColorBuffer(width, height);
}
EmuHWC2::Display::~Display() {
mDevice.freeDisplayColorBuffer(mTargetCb);
}
Error EmuHWC2::Display::acceptChanges() {
ALOGVV("%s: displayId %u", __FUNCTION__, (uint32_t)mId);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mChanges) {
ALOGW("%s: displayId %u acceptChanges failed, not validated",
__FUNCTION__, (uint32_t)mId);
return Error::NotValidated;
}
for (auto& change : mChanges->getTypeChanges()) {
auto layerId = change.first;
auto type = change.second;
if (mDevice.mLayers.count(layerId) == 0) {
// This should never happen but somehow does.
ALOGW("Cannot accept change for unknown layer %u",
(uint32_t)layerId);
continue;
}
auto layer = mDevice.mLayers[layerId];
layer->setCompositionType((int32_t)type);
}
mChanges->clearTypeChanges();
return Error::None;
}
Error EmuHWC2::Display::createLayer(hwc2_layer_t* outLayerId) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
auto layer = *mLayers.emplace(std::make_shared<Layer>(*this));
mDevice.mLayers.emplace(std::make_pair(layer->getId(), layer));
*outLayerId = layer->getId();
ALOGV("%s: Display %u created layer %u", __FUNCTION__, (uint32_t)mId,
(uint32_t)(*outLayerId));
return Error::None;
}
Error EmuHWC2::Display::destroyLayer(hwc2_layer_t layerId) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
const auto mapLayer = mDevice.mLayers.find(layerId);
if (mapLayer == mDevice.mLayers.end()) {
ALOGW("%s failed: no such layer, displayId %u layerId %u",
__FUNCTION__, (uint32_t)mId, (uint32_t)layerId);
return Error::BadLayer;
}
const auto layer = mapLayer->second;
mDevice.mLayers.erase(mapLayer);
const auto zRange = mLayers.equal_range(layer);
for (auto current = zRange.first; current != zRange.second; ++current) {
if (**current == *layer) {
current = mLayers.erase(current);
break;
}
}
ALOGV("%s: displayId %d layerId %d", __FUNCTION__, (uint32_t)mId,
(uint32_t)layerId);
return Error::None;
}
Error EmuHWC2::Display::getActiveConfig(hwc2_config_t* outConfig) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mActiveConfig) {
ALOGW("%s: displayId %d %s", __FUNCTION__, (uint32_t)mId,
to_string(Error::BadConfig).c_str());
return Error::BadConfig;
}
auto configId = mActiveConfig->getId();
ALOGV("%s: displayId %d configId %d", __FUNCTION__,
(uint32_t)mId, (uint32_t)configId);
*outConfig = configId;
return Error::None;
}
Error EmuHWC2::Display::getDisplayAttribute(hwc2_config_t configId,
int32_t attribute, int32_t* outValue) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (configId > mConfigs.size() || !mConfigs[configId]->isOnDisplay(*this)) {
ALOGW("%s: bad config (%u %u)", __FUNCTION__, (uint32_t)mId, configId);
return Error::BadConfig;
}
*outValue = mConfigs[configId]->getAttribute((Attribute)attribute);
ALOGV("%s: (%d %d) %s --> %d", __FUNCTION__,
(uint32_t)mId, (uint32_t)configId,
to_string((Attribute)attribute).c_str(), *outValue);
return Error::None;
}
Error EmuHWC2::Display::getChangedCompositionTypes(
uint32_t* outNumElements, hwc2_layer_t* outLayers, int32_t* outTypes) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mChanges) {
ALOGW("display %u getChangedCompositionTypes failed: not validated",
(uint32_t)mId);
return Error::NotValidated;
}
if ((outLayers == nullptr) || (outTypes == nullptr)) {
*outNumElements = mChanges->getTypeChanges().size();
return Error::None;
}
uint32_t numWritten = 0;
for (const auto& element : mChanges->getTypeChanges()) {
if (numWritten == *outNumElements) {
break;
}
auto layerId = element.first;
auto intType = static_cast<int32_t>(element.second);
ALOGV("%s: Adding layer %u %s", __FUNCTION__, (uint32_t)layerId,
to_string(element.second).c_str());
outLayers[numWritten] = layerId;
outTypes[numWritten] = intType;
++numWritten;
}
*outNumElements = numWritten;
return Error::None;
}
Error EmuHWC2::Display::getColorModes(uint32_t* outNumModes,
int32_t* outModes) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!outModes) {
*outNumModes = mColorModes.size();
return Error::None;
}
// we only support HAL_COLOR_MODE_NATIVE so far
uint32_t numModes = std::min(*outNumModes,
static_cast<uint32_t>(mColorModes.size()));
std::copy_n(mColorModes.cbegin(), numModes, outModes);
*outNumModes = numModes;
return Error::None;
}
Error EmuHWC2::Display::getConfigs(uint32_t* outNumConfigs,
hwc2_config_t* outConfigs) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!outConfigs) {
*outNumConfigs = mConfigs.size();
return Error::None;
}
uint32_t numWritten = 0;
for (const auto config : mConfigs) {
if (numWritten == *outNumConfigs) {
break;
}
outConfigs[numWritten] = config->getId();
++numWritten;
}
*outNumConfigs = numWritten;
return Error::None;
}
Error EmuHWC2::Display::getDozeSupport(int32_t* outSupport) {
ALOGVV("%s", __FUNCTION__);
// We don't support so far
*outSupport = 0;
return Error::None;
}
Error EmuHWC2::Display::getHdrCapabilities(uint32_t* outNumTypes,
int32_t* /*outTypes*/, float* /*outMaxLuminance*/,
float* /*outMaxAverageLuminance*/, float* /*outMinLuminance*/) {
ALOGVV("%s", __FUNCTION__);
// We don't support so far
*outNumTypes = 0;
return Error::None;
}
Error EmuHWC2::Display::getName(uint32_t* outSize, char* outName) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!outName) {
*outSize = mName.size();
return Error::None;
}
auto numCopied = mName.copy(outName, *outSize);
*outSize = numCopied;
return Error::None;
}
Error EmuHWC2::Display::getReleaseFences(uint32_t* outNumElements,
hwc2_layer_t* outLayers, int32_t* outFences) {
ALOGVV("%s", __FUNCTION__);
*outNumElements = mReleaseLayerIds.size();
ALOGVV("%s. Got %u elements", __FUNCTION__, *outNumElements);
if (*outNumElements && outLayers) {
ALOGVV("%s. export release layers", __FUNCTION__);
memcpy(outLayers, mReleaseLayerIds.data(),
sizeof(hwc2_layer_t) * (*outNumElements));
}
if (*outNumElements && outFences) {
ALOGVV("%s. export release fences", __FUNCTION__);
memcpy(outFences, mReleaseFences.data(),
sizeof(int32_t) * (*outNumElements));
}
return Error::None;
}
Error EmuHWC2::Display::getRequests(int32_t* outDisplayRequests,
uint32_t* outNumElements, hwc2_layer_t* outLayers,
int32_t* outLayerRequests) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mChanges) {
return Error::NotValidated;
}
if (outLayers == nullptr || outLayerRequests == nullptr) {
*outNumElements = mChanges->getNumLayerRequests();
return Error::None;
}
//TODO
// Display requests (HWC2::DisplayRequest) are not supported so far:
*outDisplayRequests = 0;
uint32_t numWritten = 0;
for (const auto& request : mChanges->getLayerRequests()) {
if (numWritten == *outNumElements) {
break;
}
outLayers[numWritten] = request.first;
outLayerRequests[numWritten] = static_cast<int32_t>(request.second);
++numWritten;
}
return Error::None;
}
Error EmuHWC2::Display::getType(int32_t* outType) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
*outType = (int32_t)mType;
return Error::None;
}
Error EmuHWC2::Display::present(int32_t* outRetireFence) {
ALOGVV("%s", __FUNCTION__);
*outRetireFence = -1;
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mChanges || (mChanges->getNumTypes() > 0)) {
ALOGE("%s display(%u) set failed: not validated", __FUNCTION__,
(uint32_t)mId);
return Error::NotValidated;
}
mChanges.reset();
DEFINE_AND_VALIDATE_HOST_CONNECTION
hostCon->lock();
bool hostCompositionV1 = rcEnc->hasHostCompositionV1();
bool hostCompositionV2 = rcEnc->hasHostCompositionV2();
hostCon->unlock();
// if we supports v2, then discard v1
if (hostCompositionV2) {
hostCompositionV1 = false;
}
if (hostCompositionV2 || hostCompositionV1) {
uint32_t numLayer = 0;
for (auto layer: mLayers) {
if (layer->getCompositionType() == Composition::Device ||
layer->getCompositionType() == Composition::SolidColor) {
numLayer++;
}
}
ALOGVV("present %d layers total %u layers",
numLayer, (uint32_t)mLayers.size());
mReleaseLayerIds.clear();
mReleaseFences.clear();
if (numLayer == 0) {
ALOGW("No layers, exit, buffer %p", mClientTarget.getBuffer());
if (mClientTarget.getBuffer()) {
post(hostCon, rcEnc, mClientTarget.getBuffer());
*outRetireFence = mClientTarget.getFence();
}
return Error::None;
}
if (hostCompositionV1) {
if (mComposeMsg == nullptr || mComposeMsg->getLayerCnt() < numLayer) {
mComposeMsg.reset(new ComposeMsg(numLayer));
}
} else {
if (mComposeMsg_v2 == nullptr || mComposeMsg_v2->getLayerCnt() < numLayer) {
mComposeMsg_v2.reset(new ComposeMsg_v2(numLayer));
}
}
// Handle the composition
ComposeDevice* p;
ComposeDevice_v2* p2;
ComposeLayer* l;
if (hostCompositionV1) {
p = mComposeMsg->get();
l = p->layer;
} else {
p2 = mComposeMsg_v2->get();
l = p2->layer;
}
for (auto layer: mLayers) {
if (layer->getCompositionType() != Composition::Device &&
layer->getCompositionType() != Composition::SolidColor) {
ALOGE("%s: Unsupported composition types %d layer %u",
__FUNCTION__, layer->getCompositionType(),
(uint32_t)layer->getId());
continue;
}
// send layer composition command to host
if (layer->getCompositionType() == Composition::Device) {
int fence = layer->getLayerBuffer().getFence();
mReleaseLayerIds.push_back(layer->getId());
if (fence != -1) {
int err = sync_wait(fence, 3000);
if (err < 0 && errno == ETIME) {
ALOGE("%s waited on fence %d for 3000 ms",
__FUNCTION__, fence);
}
close(fence);
}
else {
ALOGV("%s: acquire fence not set for layer %u",
__FUNCTION__, (uint32_t)layer->getId());
}
const native_handle_t *cb =
layer->getLayerBuffer().getBuffer();
if (cb != nullptr) {
l->cbHandle = hostCon->grallocHelper()->getHostHandle(cb);
}
else {
ALOGE("%s null buffer for layer %d", __FUNCTION__,
(uint32_t)layer->getId());
}
}
else {
// solidcolor has no buffer
l->cbHandle = 0;
}
l->composeMode = (hwc2_composition_t)layer->getCompositionType();
l->displayFrame = layer->getDisplayFrame();
l->crop = layer->getSourceCrop();
l->blendMode = layer->getBlendMode();
l->alpha = layer->getPlaneAlpha();
l->color = layer->getColor();
l->transform = layer->getTransform();
ALOGV(" cb %d blendmode %d alpha %f %d %d %d %d z %d"
" composeMode %d, transform %d",
l->cbHandle, l->blendMode, l->alpha,
l->displayFrame.left, l->displayFrame.top,
l->displayFrame.right, l->displayFrame.bottom,
layer->getZ(), l->composeMode, l->transform);
l++;
}
if (hostCompositionV1) {
p->version = 1;
p->targetHandle = hostCon->grallocHelper()->getHostHandle(mTargetCb);
p->numLayers = numLayer;
} else {
p2->version = 2;
p2->displayId = mHostDisplayId;
p2->targetHandle = hostCon->grallocHelper()->getHostHandle(mTargetCb);
p2->numLayers = numLayer;
}
hostCon->lock();
if (hostCompositionV1) {
rcEnc->rcCompose(rcEnc,
sizeof(ComposeDevice) + numLayer * sizeof(ComposeLayer),
(void *)p);
} else {
rcEnc->rcCompose(rcEnc,
sizeof(ComposeDevice_v2) + numLayer * sizeof(ComposeLayer),
(void *)p2);
}
hostCon->unlock();
// Send a retire fence and use it as the release fence for all layers,
// since media expects it
EGLint attribs[] = { EGL_SYNC_NATIVE_FENCE_ANDROID, EGL_NO_NATIVE_FENCE_FD_ANDROID };
uint64_t sync_handle, thread_handle;
int retire_fd;
hostCon->lock();
rcEnc->rcCreateSyncKHR(rcEnc, EGL_SYNC_NATIVE_FENCE_ANDROID,
attribs, 2 * sizeof(EGLint), true /* destroy when signaled */,
&sync_handle, &thread_handle);
hostCon->unlock();
goldfish_sync_queue_work(mSyncDeviceFd,
sync_handle, thread_handle, &retire_fd);
for (size_t i = 0; i < mReleaseLayerIds.size(); ++i) {
mReleaseFences.push_back(dup(retire_fd));
}
*outRetireFence = dup(retire_fd);
close(retire_fd);
hostCon->lock();
rcEnc->rcDestroySyncKHR(rcEnc, sync_handle);
hostCon->unlock();
} else {
// we set all layers Composition::Client, so do nothing.
post(hostCon, rcEnc, mClientTarget.getBuffer());
*outRetireFence = mClientTarget.getFence();
ALOGV("%s fallback to post, returns outRetireFence %d",
__FUNCTION__, *outRetireFence);
}
return Error::None;
}
Error EmuHWC2::Display::setActiveConfig(hwc2_config_t configId) {
ALOGVV("%s %u", __FUNCTION__, (uint32_t)configId);
std::unique_lock<std::mutex> lock(mStateMutex);
if (configId > mConfigs.size() || !mConfigs[configId]->isOnDisplay(*this)) {
ALOGW("%s: bad config (%u %u)", __FUNCTION__, (uint32_t)mId,
(uint32_t)configId);
return Error::BadConfig;
}
auto config = mConfigs[configId];
if (config == mActiveConfig) {
return Error::None;
}
mActiveConfig = config;
return Error::None;
}
Error EmuHWC2::Display::setClientTarget(buffer_handle_t target,
int32_t acquireFence, int32_t /*dataspace*/, hwc_region_t /*damage*/) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
mClientTarget.setBuffer(target);
mClientTarget.setFence(acquireFence);
return Error::None;
}
Error EmuHWC2::Display::setColorMode(int32_t intMode) {
ALOGVV("%s %d", __FUNCTION__, intMode);
std::unique_lock<std::mutex> lock(mStateMutex);
auto mode = static_cast<android_color_mode_t>(intMode);
ALOGV("%s: (display %u mode %d)", __FUNCTION__, (uint32_t)mId, intMode);
if (mode == mActiveColorMode) {
return Error::None;
}
if (mColorModes.count(mode) == 0) {
ALOGE("%s: display %d Mode %d not found in mColorModes",
__FUNCTION__, (uint32_t)mId, intMode);
return Error::Unsupported;
}
mActiveColorMode = mode;
return Error::None;
}
Error EmuHWC2::Display::setColorTransform(const float* /*matrix*/,
int32_t hint) {
ALOGVV("%s hint %d", __FUNCTION__, hint);
std::unique_lock<std::mutex> lock(mStateMutex);
//we force client composition if this is set
if (hint == 0 ) {
mSetColorTransform = false;
}
else {
mSetColorTransform = true;
}
return Error::None;
}
Error EmuHWC2::Display::setOutputBuffer(buffer_handle_t /*buffer*/,
int32_t /*releaseFence*/) {
ALOGVV("%s", __FUNCTION__);
//TODO: for virtual display
return Error::None;
}
static bool isValid(PowerMode mode) {
switch (mode) {
case PowerMode::Off: // Fall-through
case PowerMode::DozeSuspend: // Fall-through
case PowerMode::Doze: // Fall-through
case PowerMode::On: return true;
default: return false;
}
}
Error EmuHWC2::Display::setPowerMode(int32_t intMode) {
ALOGVV("%s", __FUNCTION__);
// Emulator always set screen ON
PowerMode mode = static_cast<PowerMode>(intMode);
if (!isValid(mode)) {
return Error::BadParameter;
}
if (mode == mPowerMode) {
return Error::None;
}
std::unique_lock<std::mutex> lock(mStateMutex);
ALOGV("%s: (display %u mode %s)", __FUNCTION__,
(uint32_t)mId, to_string(mode).c_str());
mPowerMode = mode;
return Error::None;
}
static bool isValid(Vsync enable) {
switch (enable) {
case Vsync::Enable: // Fall-through
case Vsync::Disable: return true;
case Vsync::Invalid: return false;
}
}
Error EmuHWC2::Display::setVsyncEnabled(int32_t intEnable) {
ALOGVV("%s %d", __FUNCTION__, intEnable);
Vsync enable = static_cast<Vsync>(intEnable);
if (!isValid(enable)) {
return Error::BadParameter;
}
if (enable == mVsyncEnabled) {
return Error::None;
}
std::unique_lock<std::mutex> lock(mStateMutex);
mVsyncEnabled = enable;
return Error::None;
}
Error EmuHWC2::Display::validate(uint32_t* outNumTypes,
uint32_t* outNumRequests) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (!mChanges) {
mChanges.reset(new Changes);
DEFINE_AND_VALIDATE_HOST_CONNECTION
hostCon->lock();
bool hostCompositionV1 = rcEnc->hasHostCompositionV1();
bool hostCompositionV2 = rcEnc->hasHostCompositionV2();
hostCon->unlock();
if (hostCompositionV1 || hostCompositionV2) {
// Support Device and SolidColor, otherwise, fallback all layers
// to Client
bool fallBack = false;
for (auto& layer : mLayers) {
if (layer->getCompositionType() == Composition::Invalid) {
// Log error for unused layers, layer leak?
ALOGE("%s layer %u CompositionType(%d) not set",
__FUNCTION__, (uint32_t)layer->getId(),
layer->getCompositionType());
continue;
}
if (layer->getCompositionType() == Composition::Client ||
layer->getCompositionType() == Composition::Cursor ||
layer->getCompositionType() == Composition::Sideband) {
ALOGW("%s: layer %u CompositionType %d, fallback", __FUNCTION__,
(uint32_t)layer->getId(), layer->getCompositionType());
fallBack = true;
break;
}
}
if (mSetColorTransform) {
fallBack = true;
}
if (fallBack) {
for (auto& layer : mLayers) {
if (layer->getCompositionType() == Composition::Invalid) {
continue;
}
if (layer->getCompositionType() != Composition::Client) {
mChanges->addTypeChange(layer->getId(),
Composition::Client);
}
}
}
}
else {
for (auto& layer : mLayers) {
if (layer->getCompositionType() != Composition::Client) {
mChanges->addTypeChange(layer->getId(),
Composition::Client);
}
}
}
}
else {
ALOGE("Validate was called more than once!");
}
*outNumTypes = mChanges->getNumTypes();
*outNumRequests = mChanges->getNumLayerRequests();
ALOGV("%s: displayId %u types %u, requests %u", __FUNCTION__,
(uint32_t)mId, *outNumTypes, *outNumRequests);
return *outNumTypes > 0 ? Error::HasChanges : Error::None;
}
Error EmuHWC2::Display::updateLayerZ(hwc2_layer_t layerId, uint32_t z) {
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
const auto mapLayer = mDevice.mLayers.find(layerId);
if (mapLayer == mDevice.mLayers.end()) {
ALOGE("%s failed to find layer %u", __FUNCTION__, (uint32_t)mId);
return Error::BadLayer;
}
const auto layer = mapLayer->second;
const auto zRange = mLayers.equal_range(layer);
bool layerOnDisplay = false;
for (auto current = zRange.first; current != zRange.second; ++current) {
if (**current == *layer) {
if ((*current)->getZ() == z) {
// Don't change anything if the Z hasn't changed
return Error::None;
}
current = mLayers.erase(current);
layerOnDisplay = true;
break;
}
}
if (!layerOnDisplay) {
ALOGE("%s failed to find layer %u on display", __FUNCTION__,
(uint32_t)mId);
return Error::BadLayer;
}
layer->setZ(z);
mLayers.emplace(std::move(layer));
return Error::None;
}
Error EmuHWC2::Display::getClientTargetSupport(uint32_t width, uint32_t height,
int32_t format, int32_t dataspace){
ALOGVV("%s", __FUNCTION__);
std::unique_lock<std::mutex> lock(mStateMutex);
if (mActiveConfig == nullptr) {
return Error::Unsupported;
}
if (width == (uint32_t)mActiveConfig->getAttribute(Attribute::Width) &&
height == (uint32_t)mActiveConfig->getAttribute(Attribute::Height) &&
format == HAL_PIXEL_FORMAT_RGBA_8888 &&
dataspace == HAL_DATASPACE_UNKNOWN) {
return Error::None;
}
return Error::None;
}
// thess EDIDs are carefully generated according to the EDID spec version 1.3, more info
// can be found from the following file:
// frameworks/native/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
// approved pnp ids can be found here: https://uefi.org/pnp_id_list
// pnp id: GGL, name: EMU_display_0, last byte is checksum
// display id is local:8141603649153536
static const uint8_t sEDID0[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1c, 0xec, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
0x1b, 0x10, 0x01, 0x03, 0x80, 0x50, 0x2d, 0x78, 0x0a, 0x0d, 0xc9, 0xa0, 0x57, 0x47, 0x98, 0x27,
0x12, 0x48, 0x4c, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x45, 0x4d, 0x55, 0x5f, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x5f, 0x30, 0x00, 0x4b
};
// pnp id: GGL, name: EMU_display_1
// display id is local:8140900251843329
static const uint8_t sEDID1[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1c, 0xec, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
0x1b, 0x10, 0x01, 0x03, 0x80, 0x50, 0x2d, 0x78, 0x0a, 0x0d, 0xc9, 0xa0, 0x57, 0x47, 0x98, 0x27,
0x12, 0x48, 0x4c, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x45, 0x4d, 0x55, 0x5f, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x5f, 0x31, 0x00, 0x3b
};
// pnp id: GGL, name: EMU_display_2
// display id is local:8140940453066754
static const uint8_t sEDID2[] = {
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x1c, 0xec, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
0x1b, 0x10, 0x01, 0x03, 0x80, 0x50, 0x2d, 0x78, 0x0a, 0x0d, 0xc9, 0xa0, 0x57, 0x47, 0x98, 0x27,
0x12, 0x48, 0x4c, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc,
0x00, 0x45, 0x4d, 0x55, 0x5f, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x5f, 0x32, 0x00, 0x49
};
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
Error EmuHWC2::Display::getDisplayIdentificationData(uint8_t* outPort,
uint32_t* outDataSize, uint8_t* outData) {
ALOGVV("%s DisplayId %u", __FUNCTION__, (uint32_t)mId);
if (outPort == nullptr || outDataSize == nullptr)
return Error::BadParameter;
uint32_t len = std::min(*outDataSize, (uint32_t)ARRAY_SIZE(sEDID0));
if (outData != nullptr && len < (uint32_t)ARRAY_SIZE(sEDID0)) {
ALOGW("%s DisplayId %u, small buffer size: %u is specified",
__FUNCTION__, (uint32_t)mId, len);
}
*outDataSize = ARRAY_SIZE(sEDID0);
switch (mId) {
case 0:
*outPort = 0;
if (outData)
memcpy(outData, sEDID0, len);
break;
case 1:
*outPort = 1;
if (outData)
memcpy(outData, sEDID1, len);
break;
case 2:
*outPort = 2;
if (outData)
memcpy(outData, sEDID2, len);
break;
default:
*outPort = (uint8_t)mId;
if (outData) {
memcpy(outData, sEDID2, len);
uint32_t size = ARRAY_SIZE(sEDID0);
// change the name to EMU_display_<mID>
// note the 3rd char from back is the number, _0, _1, _2, etc.
if (len >= size - 2)
outData[size-3] = '0' + (uint8_t)mId;
if (len >= size) {
// update the last byte, which is checksum byte
uint8_t checksum = -(uint8_t)std::accumulate(
outData, outData + size - 1, static_cast<uint8_t>(0));
outData[size - 1] = checksum;
}
}
break;
}
return Error::None;
}
Error EmuHWC2::Display::getDisplayCapabilities(uint32_t* outNumCapabilities,
uint32_t* outCapabilities) {
if (outNumCapabilities == nullptr) {
return Error::None;
}
bool brightness_support = true;
bool doze_support = true;
uint32_t count = 1 + static_cast<uint32_t>(doze_support) + (brightness_support ? 1 : 0);
int index = 0;
if (outCapabilities != nullptr && (*outNumCapabilities >= count)) {
outCapabilities[index++] = HWC2_DISPLAY_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM;
if (doze_support) {
outCapabilities[index++] = HWC2_DISPLAY_CAPABILITY_DOZE;
}
if (brightness_support) {
outCapabilities[index++] = HWC2_DISPLAY_CAPABILITY_BRIGHTNESS;
}
}
*outNumCapabilities = count;
return Error::None;
}
Error EmuHWC2::Display::getDisplayBrightnessSupport(bool *out_support) {
*out_support = false;
return Error::None;
}
Error EmuHWC2::Display::setDisplayBrightness(float brightness) {
ALOGW("TODO: setDisplayBrightness() is not implemented yet: brightness=%f", brightness);
return Error::None;
}
int EmuHWC2::Display::populatePrimaryConfigs(int width, int height, int dpiX, int dpiY) {
ALOGVV("%s DisplayId %u", __FUNCTION__, (uint32_t)mId);
std::unique_lock<std::mutex> lock(mStateMutex);
auto newConfig = std::make_shared<Config>(*this);
// vsync is 60 hz;
newConfig->setAttribute(Attribute::VsyncPeriod, mVsyncPeriod);
newConfig->setAttribute(Attribute::Width, width);
newConfig->setAttribute(Attribute::Height, height);
newConfig->setAttribute(Attribute::DpiX, dpiX * 1000);
newConfig->setAttribute(Attribute::DpiY, dpiY * 1000);
newConfig->setId(static_cast<hwc2_config_t>(mConfigs.size()));
ALOGV("Found new config %d: %s", (uint32_t)newConfig->getId(),
newConfig->toString().c_str());
mConfigs.emplace_back(std::move(newConfig));
// Only have single config so far, it is activeConfig
mActiveConfig = mConfigs[0];
mActiveColorMode = HAL_COLOR_MODE_NATIVE;
mColorModes.emplace((android_color_mode_t)HAL_COLOR_MODE_NATIVE);
mSyncDeviceFd = goldfish_sync_open();
return 0;
}
void EmuHWC2::Display::post(HostConnection *hostCon,
ExtendedRCEncoderContext *rcEnc,
buffer_handle_t h) {
assert(cb && "native_handle_t::from(h) failed");
hostCon->lock();
rcEnc->rcFBPost(rcEnc, hostCon->grallocHelper()->getHostHandle(h));
hostCon->flush();
hostCon->unlock();
}
HWC2::Error EmuHWC2::Display::populateSecondaryConfigs(uint32_t width, uint32_t height,
uint32_t dpi, uint32_t idx) {
ALOGVV("%s DisplayId %u, width %u, height %u, dpi %u",
__FUNCTION__, (uint32_t)mId, width, height, dpi);
std::unique_lock<std::mutex> lock(mStateMutex);
auto newConfig = std::make_shared<Config>(*this);
// vsync is 60 hz;
newConfig->setAttribute(Attribute::VsyncPeriod, mVsyncPeriod);
newConfig->setAttribute(Attribute::Width, width);
newConfig->setAttribute(Attribute::Height, height);
newConfig->setAttribute(Attribute::DpiX, dpi*1000);
newConfig->setAttribute(Attribute::DpiY, dpi*1000);
int configId = mConfigs.size();
newConfig->setId(static_cast<hwc2_config_t>(configId));
ALOGV("Found new secondary config %d: %s", (uint32_t)newConfig->getId(),
newConfig->toString().c_str());
mConfigs.emplace_back(std::move(newConfig));
mActiveConfig = mConfigs[configId];
mActiveColorMode = HAL_COLOR_MODE_NATIVE;
mColorModes.emplace((android_color_mode_t)HAL_COLOR_MODE_NATIVE);
uint32_t displayId = hostDisplayIdStart + idx;
DEFINE_AND_VALIDATE_HOST_CONNECTION
hostCon->lock();
rcEnc->rcDestroyDisplay(rcEnc, displayId);
rcEnc->rcCreateDisplay(rcEnc, &displayId);
rcEnc->rcSetDisplayPose(rcEnc, displayId, -1, -1, width, height);
hostCon->unlock();
if (displayId != hostDisplayIdStart + idx) {
ALOGE("Something wrong with host displayId allocation, want %d "
"allocated %d", hostDisplayIdStart + idx, displayId);
}
mHostDisplayId = displayId;
ALOGVV("%s: mHostDisplayId=%d", __FUNCTION__, mHostDisplayId);
return HWC2::Error::None;
}
// Config functions
void EmuHWC2::Display::Config::setAttribute(Attribute attribute,
int32_t value) {
mAttributes[attribute] = value;
}
int32_t EmuHWC2::Display::Config::getAttribute(Attribute attribute) const {
if (mAttributes.count(attribute) == 0) {
return -1;
}
return mAttributes.at(attribute);
}
std::string EmuHWC2::Display::Config::toString() const {
std::string output;
const size_t BUFFER_SIZE = 100;
char buffer[BUFFER_SIZE] = {};
auto writtenBytes = snprintf(buffer, BUFFER_SIZE,
"%u x %u", mAttributes.at(HWC2::Attribute::Width),
mAttributes.at(HWC2::Attribute::Height));
output.append(buffer, writtenBytes);
if (mAttributes.count(HWC2::Attribute::VsyncPeriod) != 0) {
std::memset(buffer, 0, BUFFER_SIZE);
writtenBytes = snprintf(buffer, BUFFER_SIZE, " @ %.1f Hz",
1e9 / mAttributes.at(HWC2::Attribute::VsyncPeriod));
output.append(buffer, writtenBytes);
}
if (mAttributes.count(HWC2::Attribute::DpiX) != 0 &&
mAttributes.at(HWC2::Attribute::DpiX) != -1) {
std::memset(buffer, 0, BUFFER_SIZE);
writtenBytes = snprintf(buffer, BUFFER_SIZE,
", DPI: %.1f x %.1f",
mAttributes.at(HWC2::Attribute::DpiX) / 1000.0f,
mAttributes.at(HWC2::Attribute::DpiY) / 1000.0f);
output.append(buffer, writtenBytes);
}
return output;
}
// VsyncThread function
bool EmuHWC2::Display::VsyncThread::threadLoop() {
struct timespec rt;
if (clock_gettime(CLOCK_MONOTONIC, &rt) == -1) {
ALOGE("%s: error in vsync thread clock_gettime: %s",
__FUNCTION__, strerror(errno));
return true;
}
const int logInterval = 60;
int64_t lastLogged = rt.tv_sec;
int sent = 0;
int lastSent = 0;
bool vsyncEnabled = false;
struct timespec wait_time;
wait_time.tv_sec = 0;
wait_time.tv_nsec = mDisplay.mVsyncPeriod;
const int64_t kOneRefreshNs = mDisplay.mVsyncPeriod;
const int64_t kOneSecondNs = 1000ULL * 1000ULL * 1000ULL;
int64_t lastTimeNs = -1;
int64_t phasedWaitNs = 0;
int64_t currentNs = 0;
while (true) {
clock_gettime(CLOCK_MONOTONIC, &rt);
currentNs = rt.tv_nsec + rt.tv_sec * kOneSecondNs;
if (lastTimeNs < 0) {
phasedWaitNs = currentNs + kOneRefreshNs;
} else {
phasedWaitNs = kOneRefreshNs *
(( currentNs - lastTimeNs) / kOneRefreshNs + 1) +
lastTimeNs;
}
wait_time.tv_sec = phasedWaitNs / kOneSecondNs;
wait_time.tv_nsec = phasedWaitNs - wait_time.tv_sec * kOneSecondNs;
int ret;
do {
ret = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &wait_time, NULL);
} while (ret == -1 && errno == EINTR);
lastTimeNs = phasedWaitNs;
std::unique_lock<std::mutex> lock(mDisplay.mStateMutex);
vsyncEnabled = (mDisplay.mVsyncEnabled == Vsync::Enable);
lock.unlock();
if (!vsyncEnabled) {
continue;
}
lock.lock();
const auto& callbackInfo = mDisplay.mDevice.mCallbacks[Callback::Vsync];
auto vsync = reinterpret_cast<HWC2_PFN_VSYNC>(callbackInfo.pointer);
lock.unlock();
if (vsync) {
vsync(callbackInfo.data, mDisplay.mId, lastTimeNs);
}
if (rt.tv_sec - lastLogged >= logInterval) {
ALOGVV("sent %d syncs in %ds", sent - lastSent, rt.tv_sec - lastLogged);
lastLogged = rt.tv_sec;
lastSent = sent;
}
++sent;
}
return false;
}
// Layer functions
bool EmuHWC2::SortLayersByZ::operator()(const std::shared_ptr<Layer>& lhs,
const std::shared_ptr<Layer>& rhs) const {
return lhs->getZ() < rhs->getZ();
}
std::atomic<hwc2_layer_t> EmuHWC2::Layer::sNextId(1);
EmuHWC2::Layer::Layer(Display& display)
: mId(sNextId++),
mDisplay(display),
mBuffer(),
mSurfaceDamage(),
mBlendMode(BlendMode::None),
mColor({0, 0, 0, 0}),
mCompositionType(Composition::Invalid),
mDisplayFrame({0, 0, -1, -1}),
mPlaneAlpha(0.0f),
mSidebandStream(nullptr),
mSourceCrop({0.0f, 0.0f, -1.0f, -1.0f}),
mTransform(Transform::None),
mVisibleRegion(),
mZ(0)
{}
Error EmuHWC2::Layer::setBuffer(buffer_handle_t buffer,
int32_t acquireFence) {
ALOGVV("%s: Setting acquireFence %d for layer %u", __FUNCTION__,
acquireFence, (uint32_t)mId);
mBuffer.setBuffer(buffer);
mBuffer.setFence(acquireFence);
return Error::None;
}
Error EmuHWC2::Layer::setCursorPosition(int32_t /*x*/,
int32_t /*y*/) {
ALOGVV("%s layer %u", __FUNCTION__, (uint32_t)mId);
if (mCompositionType != Composition::Cursor) {
ALOGE("%s: CompositionType not Cursor type", __FUNCTION__);
return Error::BadLayer;
}
//TODO
return Error::None;
}
Error EmuHWC2::Layer::setSurfaceDamage(hwc_region_t /*damage*/) {
// Emulator redraw whole layer per frame, so ignore this.
ALOGVV("%s", __FUNCTION__);
return Error::None;
}
// Layer state functions
Error EmuHWC2::Layer::setBlendMode(int32_t mode) {
ALOGVV("%s %d for layer %u", __FUNCTION__, mode, (uint32_t)mId);
mBlendMode = static_cast<BlendMode>(mode);
return Error::None;
}
Error EmuHWC2::Layer::setColor(hwc_color_t color) {
ALOGVV("%s layer %u %d", __FUNCTION__, (uint32_t)mId, color);
mColor = color;
return Error::None;
}
Error EmuHWC2::Layer::setCompositionType(int32_t type) {
ALOGVV("%s layer %u %u", __FUNCTION__, (uint32_t)mId, type);
mCompositionType = static_cast<Composition>(type);
return Error::None;
}
Error EmuHWC2::Layer::setDataspace(int32_t) {
ALOGVV("%s", __FUNCTION__);
return Error::None;
}
Error EmuHWC2::Layer::setDisplayFrame(hwc_rect_t frame) {
ALOGVV("%s layer %u", __FUNCTION__, (uint32_t)mId);
mDisplayFrame = frame;
return Error::None;
}
Error EmuHWC2::Layer::setPlaneAlpha(float alpha) {
ALOGVV("%s layer %u %f", __FUNCTION__, (uint32_t)mId, alpha);
mPlaneAlpha = alpha;
return Error::None;
}
Error EmuHWC2::Layer::setSidebandStream(const native_handle_t* stream) {
ALOGVV("%s layer %u", __FUNCTION__, (uint32_t)mId);
mSidebandStream = stream;
return Error::None;
}
Error EmuHWC2::Layer::setSourceCrop(hwc_frect_t crop) {
ALOGVV("%s layer %u", __FUNCTION__, (uint32_t)mId);
mSourceCrop = crop;
return Error::None;
}
Error EmuHWC2::Layer::setTransform(int32_t transform) {
ALOGVV("%s layer %u", __FUNCTION__, (uint32_t)mId);
mTransform = static_cast<Transform>(transform);
return Error::None;
}
static bool compareRects(const hwc_rect_t& rect1, const hwc_rect_t& rect2) {
return rect1.left == rect2.left &&
rect1.right == rect2.right &&
rect1.top == rect2.top &&
rect1.bottom == rect2.bottom;
}
Error EmuHWC2::Layer::setVisibleRegion(hwc_region_t visible) {
ALOGVV("%s", __FUNCTION__);
if ((getNumVisibleRegions() != visible.numRects) ||
!std::equal(mVisibleRegion.begin(), mVisibleRegion.end(), visible.rects,
compareRects)) {
mVisibleRegion.resize(visible.numRects);
std::copy_n(visible.rects, visible.numRects, mVisibleRegion.begin());
}
return Error::None;
}
Error EmuHWC2::Layer::setZ(uint32_t z) {
ALOGVV("%s layer %u %d", __FUNCTION__, (uint32_t)mId, z);
mZ = z;
return Error::None;
}
// Adaptor Helpers
void EmuHWC2::populateCapabilities() {
//TODO: add Capabilities
// support virtualDisplay
// support sideBandStream
// support backGroundColor
// we should not set this for HWC2, TODO: remove
// mCapabilities.insert(Capability::PresentFenceIsNotReliable);
}
int EmuHWC2::populatePrimary() {
int ret = 0;
auto display = std::make_shared<Display>(*this, HWC2::DisplayType::Physical,
mDisplayWidth, mDisplayHeight);
ret = display->populatePrimaryConfigs(mDisplayWidth, mDisplayHeight,
mDisplayDpiX, mDisplayDpiY);
if (ret != 0) {
return ret;
}
mDisplays.emplace(display->getId(), std::move(display));
return ret;
}
// Note "hwservicemanager." is used to avoid selinux issue
#define EXTERANL_DISPLAY_PROP "hwservicemanager.external.displays"
// return 0 for successful, 1 if no external displays are specified
// return < 0 if failed
int EmuHWC2::populateSecondaryDisplays() {
// this guest property, hwservicemanager.external.displays,
// specifies multi-display info, with comma (,) as separator
// each display has the following info:
// physicalId,width,height,dpi,flags
// serveral displays can be provided, e.g., following has 2 displays:
// setprop hwservicemanager.external.displays 1,1200,800,120,0,2,1200,800,120,0
std::vector<uint64_t> values;
char displaysValue[PROPERTY_VALUE_MAX] = "";
property_get(EXTERANL_DISPLAY_PROP, displaysValue, "");
bool isValid = displaysValue[0] != '\0';
if (isValid) {
char *p = displaysValue;
while (*p) {
if (!isdigit(*p) && *p != ',' && *p != ' ') {
isValid = false;
break;
}
p ++;
}
if (!isValid) {
ALOGE("Invalid syntax for the value of system prop: %s", EXTERANL_DISPLAY_PROP);
}
}
if (!isValid) {
// no external displays are specified
return 1;
}
// parse all int values to a vector
std::istringstream stream(displaysValue);
for (uint64_t id; stream >> id;) {
values.push_back(id);
if (stream.peek() == ',')
stream.ignore();
}
// each display has 5 values
if ((values.size() % 5) != 0) {
ALOGE("%s: invalid value for system property: %s", __FUNCTION__, EXTERANL_DISPLAY_PROP);
return -1;
}
uint32_t idx = 0;
while (!values.empty()) {
// uint64_t physicalId = values[0];
uint32_t width = values[1];
uint32_t height = values[2];
uint32_t dpi = values[3];
// uint32_t flags = values[4];
values.erase(values.begin(), values.begin() + 5);
Error ret = Error::None;
auto display = std::make_shared<Display>(*this, HWC2::DisplayType::Physical, width, height);
ret = display->populateSecondaryConfigs(width, height, dpi, idx++);
if (ret != Error::None) {
return -2;
}
mDisplays.emplace(display->getId(), std::move(display));
}
return 0;
}
EmuHWC2::Display* EmuHWC2::getDisplay(hwc2_display_t id) {
auto display = mDisplays.find(id);
if (display == mDisplays.end()) {
ALOGE("Failed to get display for id=%d", (uint32_t)id);
return nullptr;
}
return display->second.get();
}
std::tuple<EmuHWC2::Layer*, Error> EmuHWC2::getLayer(
hwc2_display_t displayId, hwc2_layer_t layerId) {
auto display = getDisplay(displayId);
if (!display) {
ALOGE("%s: Fail to find display %d", __FUNCTION__, (uint32_t)displayId);
return std::make_tuple(static_cast<Layer*>(nullptr), Error::BadDisplay);
}
auto layerEntry = mLayers.find(layerId);
if (layerEntry == mLayers.end()) {
ALOGE("%s: Fail to find layer %d", __FUNCTION__, (uint32_t)layerId);
return std::make_tuple(static_cast<Layer*>(nullptr), Error::BadLayer);
}
auto layer = layerEntry->second;
if (layer->getDisplay().getId() != displayId) {
ALOGE("%s: layer %d not belongs to display %d", __FUNCTION__,
(uint32_t)layerId, (uint32_t)displayId);
return std::make_tuple(static_cast<Layer*>(nullptr), Error::BadLayer);
}
return std::make_tuple(layer.get(), Error::None);
}
static int hwc2DevOpen(const struct hw_module_t *module, const char *name,
struct hw_device_t **dev) {
ALOGVV("%s ", __FUNCTION__);
if (strcmp(name, HWC_HARDWARE_COMPOSER)) {
ALOGE("Invalid module name- %s", name);
return -EINVAL;
}
EmuHWC2* ctx = new EmuHWC2();
if (!ctx) {
ALOGE("Failed to allocate EmuHWC2");
return -ENOMEM;
}
int ret = ctx->populatePrimary();
if (ret != 0) {
ALOGE("Failed to populate primary display");
return ret;
}
ret = ctx->populateSecondaryDisplays();
if (ret < 0) {
ALOGE("Failed to populate secondary displays");
return ret;
}
ctx->common.module = const_cast<hw_module_t *>(module);
*dev = &ctx->common;
return 0;
}
}
static struct hw_module_methods_t hwc2_module_methods = {
.open = android::hwc2DevOpen
};
hw_module_t HAL_MODULE_INFO_SYM = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 2,
.version_minor = 0,
.id = HWC_HARDWARE_MODULE_ID,
.name = "goldfish HWC2 module",
.author = "The Android Open Source Project",
.methods = &hwc2_module_methods,
.dso = NULL,
.reserved = {0},
};