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/*
* Copyright 2016 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.
*/
#undef LOG_TAG
#define LOG_TAG "HwcComposer"
#include <inttypes.h>
#include <log/log.h>
#include <gui/BufferQueue.h>
#include "ComposerHal.h"
namespace android {
using hardware::Return;
using hardware::hidl_vec;
using hardware::hidl_handle;
namespace Hwc2 {
namespace {
class BufferHandle {
public:
BufferHandle(const native_handle_t* buffer)
{
// nullptr is not a valid handle to HIDL
mHandle = (buffer) ? buffer : native_handle_init(mStorage, 0, 0);
}
operator const hidl_handle&() const
{
return mHandle;
}
private:
NATIVE_HANDLE_DECLARE_STORAGE(mStorage, 0, 0);
hidl_handle mHandle;
};
class FenceHandle
{
public:
FenceHandle(int fd, bool owned)
: mOwned(owned)
{
native_handle_t* handle;
if (fd >= 0) {
handle = native_handle_init(mStorage, 1, 0);
handle->data[0] = fd;
} else {
// nullptr is not a valid handle to HIDL
handle = native_handle_init(mStorage, 0, 0);
}
mHandle = handle;
}
~FenceHandle()
{
if (mOwned) {
native_handle_close(mHandle);
}
}
operator const hidl_handle&() const
{
return mHandle;
}
private:
bool mOwned;
NATIVE_HANDLE_DECLARE_STORAGE(mStorage, 1, 0);
hidl_handle mHandle;
};
// assume NO_RESOURCES when Status::isOk returns false
constexpr Error kDefaultError = Error::NO_RESOURCES;
template<typename T, typename U>
T unwrapRet(Return<T>& ret, const U& default_val)
{
return (ret.isOk()) ? static_cast<T>(ret) :
static_cast<T>(default_val);
}
Error unwrapRet(Return<Error>& ret)
{
return unwrapRet(ret, kDefaultError);
}
} // anonymous namespace
Composer::CommandWriter::CommandWriter(uint32_t initialMaxSize)
: CommandWriterBase(initialMaxSize) {}
Composer::CommandWriter::~CommandWriter()
{
}
void Composer::CommandWriter::setLayerInfo(uint32_t type, uint32_t appId)
{
constexpr uint16_t kSetLayerInfoLength = 2;
beginCommand(
static_cast<IComposerClient::Command>(
IVrComposerClient::VrCommand::SET_LAYER_INFO),
kSetLayerInfoLength);
write(type);
write(appId);
endCommand();
}
void Composer::CommandWriter::setClientTargetMetadata(
const IVrComposerClient::BufferMetadata& metadata)
{
constexpr uint16_t kSetClientTargetMetadataLength = 7;
beginCommand(
static_cast<IComposerClient::Command>(
IVrComposerClient::VrCommand::SET_CLIENT_TARGET_METADATA),
kSetClientTargetMetadataLength);
writeBufferMetadata(metadata);
endCommand();
}
void Composer::CommandWriter::setLayerBufferMetadata(
const IVrComposerClient::BufferMetadata& metadata)
{
constexpr uint16_t kSetLayerBufferMetadataLength = 7;
beginCommand(
static_cast<IComposerClient::Command>(
IVrComposerClient::VrCommand::SET_LAYER_BUFFER_METADATA),
kSetLayerBufferMetadataLength);
writeBufferMetadata(metadata);
endCommand();
}
void Composer::CommandWriter::writeBufferMetadata(
const IVrComposerClient::BufferMetadata& metadata)
{
write(metadata.width);
write(metadata.height);
write(metadata.stride);
write(metadata.layerCount);
writeSigned(static_cast<int32_t>(metadata.format));
write64(metadata.usage);
}
Composer::Composer(bool useVrComposer)
: mWriter(kWriterInitialSize),
mIsUsingVrComposer(useVrComposer)
{
if (mIsUsingVrComposer) {
mComposer = IComposer::getService("vr");
} else {
mComposer = IComposer::getService(); // use default name
}
if (mComposer == nullptr) {
LOG_ALWAYS_FATAL("failed to get hwcomposer service");
}
mComposer->createClient(
[&](const auto& tmpError, const auto& tmpClient)
{
if (tmpError == Error::NONE) {
mClient = tmpClient;
}
});
if (mClient == nullptr) {
LOG_ALWAYS_FATAL("failed to create composer client");
}
if (mIsUsingVrComposer) {
sp<IVrComposerClient> vrClient = IVrComposerClient::castFrom(mClient);
if (vrClient == nullptr) {
LOG_ALWAYS_FATAL("failed to create vr composer client");
}
}
}
std::vector<IComposer::Capability> Composer::getCapabilities()
{
std::vector<IComposer::Capability> capabilities;
mComposer->getCapabilities(
[&](const auto& tmpCapabilities) {
capabilities = tmpCapabilities;
});
return capabilities;
}
std::string Composer::dumpDebugInfo()
{
std::string info;
mComposer->dumpDebugInfo([&](const auto& tmpInfo) {
info = tmpInfo.c_str();
});
return info;
}
void Composer::registerCallback(const sp<IComposerCallback>& callback)
{
auto ret = mClient->registerCallback(callback);
if (!ret.isOk()) {
ALOGE("failed to register IComposerCallback");
}
}
bool Composer::isRemote() {
return mClient->isRemote();
}
void Composer::resetCommands() {
mWriter.reset();
}
uint32_t Composer::getMaxVirtualDisplayCount()
{
auto ret = mClient->getMaxVirtualDisplayCount();
return unwrapRet(ret, 0);
}
Error Composer::createVirtualDisplay(uint32_t width, uint32_t height,
PixelFormat* format, Display* outDisplay)
{
const uint32_t bufferSlotCount = 1;
Error error = kDefaultError;
mClient->createVirtualDisplay(width, height, *format, bufferSlotCount,
[&](const auto& tmpError, const auto& tmpDisplay,
const auto& tmpFormat) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outDisplay = tmpDisplay;
*format = tmpFormat;
});
return error;
}
Error Composer::destroyVirtualDisplay(Display display)
{
auto ret = mClient->destroyVirtualDisplay(display);
return unwrapRet(ret);
}
Error Composer::acceptDisplayChanges(Display display)
{
mWriter.selectDisplay(display);
mWriter.acceptDisplayChanges();
return Error::NONE;
}
Error Composer::createLayer(Display display, Layer* outLayer)
{
Error error = kDefaultError;
mClient->createLayer(display, BufferQueue::NUM_BUFFER_SLOTS,
[&](const auto& tmpError, const auto& tmpLayer) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outLayer = tmpLayer;
});
return error;
}
Error Composer::destroyLayer(Display display, Layer layer)
{
auto ret = mClient->destroyLayer(display, layer);
return unwrapRet(ret);
}
Error Composer::getActiveConfig(Display display, Config* outConfig)
{
Error error = kDefaultError;
mClient->getActiveConfig(display,
[&](const auto& tmpError, const auto& tmpConfig) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outConfig = tmpConfig;
});
return error;
}
Error Composer::getChangedCompositionTypes(Display display,
std::vector<Layer>* outLayers,
std::vector<IComposerClient::Composition>* outTypes)
{
mReader.takeChangedCompositionTypes(display, outLayers, outTypes);
return Error::NONE;
}
Error Composer::getColorModes(Display display,
std::vector<ColorMode>* outModes)
{
Error error = kDefaultError;
mClient->getColorModes(display,
[&](const auto& tmpError, const auto& tmpModes) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outModes = tmpModes;
});
return error;
}
Error Composer::getDisplayAttribute(Display display, Config config,
IComposerClient::Attribute attribute, int32_t* outValue)
{
Error error = kDefaultError;
mClient->getDisplayAttribute(display, config, attribute,
[&](const auto& tmpError, const auto& tmpValue) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outValue = tmpValue;
});
return error;
}
Error Composer::getDisplayConfigs(Display display,
std::vector<Config>* outConfigs)
{
Error error = kDefaultError;
mClient->getDisplayConfigs(display,
[&](const auto& tmpError, const auto& tmpConfigs) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outConfigs = tmpConfigs;
});
return error;
}
Error Composer::getDisplayName(Display display, std::string* outName)
{
Error error = kDefaultError;
mClient->getDisplayName(display,
[&](const auto& tmpError, const auto& tmpName) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outName = tmpName.c_str();
});
return error;
}
Error Composer::getDisplayRequests(Display display,
uint32_t* outDisplayRequestMask, std::vector<Layer>* outLayers,
std::vector<uint32_t>* outLayerRequestMasks)
{
mReader.takeDisplayRequests(display, outDisplayRequestMask,
outLayers, outLayerRequestMasks);
return Error::NONE;
}
Error Composer::getDisplayType(Display display,
IComposerClient::DisplayType* outType)
{
Error error = kDefaultError;
mClient->getDisplayType(display,
[&](const auto& tmpError, const auto& tmpType) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outType = tmpType;
});
return error;
}
Error Composer::getDozeSupport(Display display, bool* outSupport)
{
Error error = kDefaultError;
mClient->getDozeSupport(display,
[&](const auto& tmpError, const auto& tmpSupport) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outSupport = tmpSupport;
});
return error;
}
Error Composer::getHdrCapabilities(Display display,
std::vector<Hdr>* outTypes, float* outMaxLuminance,
float* outMaxAverageLuminance, float* outMinLuminance)
{
Error error = kDefaultError;
mClient->getHdrCapabilities(display,
[&](const auto& tmpError, const auto& tmpTypes,
const auto& tmpMaxLuminance,
const auto& tmpMaxAverageLuminance,
const auto& tmpMinLuminance) {
error = tmpError;
if (error != Error::NONE) {
return;
}
*outTypes = tmpTypes;
*outMaxLuminance = tmpMaxLuminance;
*outMaxAverageLuminance = tmpMaxAverageLuminance;
*outMinLuminance = tmpMinLuminance;
});
return error;
}
Error Composer::getReleaseFences(Display display,
std::vector<Layer>* outLayers, std::vector<int>* outReleaseFences)
{
mReader.takeReleaseFences(display, outLayers, outReleaseFences);
return Error::NONE;
}
Error Composer::presentDisplay(Display display, int* outPresentFence)
{
mWriter.selectDisplay(display);
mWriter.presentDisplay();
Error error = execute();
if (error != Error::NONE) {
return error;
}
mReader.takePresentFence(display, outPresentFence);
return Error::NONE;
}
Error Composer::setActiveConfig(Display display, Config config)
{
auto ret = mClient->setActiveConfig(display, config);
return unwrapRet(ret);
}
Error Composer::setClientTarget(Display display, uint32_t slot,
const sp<GraphicBuffer>& target,
int acquireFence, Dataspace dataspace,
const std::vector<IComposerClient::Rect>& damage)
{
mWriter.selectDisplay(display);
if (mIsUsingVrComposer && target.get()) {
IVrComposerClient::BufferMetadata metadata = {
.width = target->getWidth(),
.height = target->getHeight(),
.stride = target->getStride(),
.layerCount = target->getLayerCount(),
.format = static_cast<PixelFormat>(target->getPixelFormat()),
.usage = target->getUsage(),
};
mWriter.setClientTargetMetadata(metadata);
}
const native_handle_t* handle = nullptr;
if (target.get()) {
handle = target->getNativeBuffer()->handle;
}
mWriter.setClientTarget(slot, handle, acquireFence, dataspace, damage);
return Error::NONE;
}
Error Composer::setColorMode(Display display, ColorMode mode)
{
auto ret = mClient->setColorMode(display, mode);
return unwrapRet(ret);
}
Error Composer::setColorTransform(Display display, const float* matrix,
ColorTransform hint)
{
mWriter.selectDisplay(display);
mWriter.setColorTransform(matrix, hint);
return Error::NONE;
}
Error Composer::setOutputBuffer(Display display, const native_handle_t* buffer,
int releaseFence)
{
mWriter.selectDisplay(display);
mWriter.setOutputBuffer(0, buffer, dup(releaseFence));
return Error::NONE;
}
Error Composer::setPowerMode(Display display, IComposerClient::PowerMode mode)
{
auto ret = mClient->setPowerMode(display, mode);
return unwrapRet(ret);
}
Error Composer::setVsyncEnabled(Display display, IComposerClient::Vsync enabled)
{
auto ret = mClient->setVsyncEnabled(display, enabled);
return unwrapRet(ret);
}
Error Composer::setClientTargetSlotCount(Display display)
{
const uint32_t bufferSlotCount = BufferQueue::NUM_BUFFER_SLOTS;
auto ret = mClient->setClientTargetSlotCount(display, bufferSlotCount);
return unwrapRet(ret);
}
Error Composer::validateDisplay(Display display, uint32_t* outNumTypes,
uint32_t* outNumRequests)
{
mWriter.selectDisplay(display);
mWriter.validateDisplay();
Error error = execute();
if (error != Error::NONE) {
return error;
}
mReader.hasChanges(display, outNumTypes, outNumRequests);
return Error::NONE;
}
Error Composer::presentOrValidateDisplay(Display display, uint32_t* outNumTypes,
uint32_t* outNumRequests, int* outPresentFence, uint32_t* state) {
mWriter.selectDisplay(display);
mWriter.presentOrvalidateDisplay();
Error error = execute();
if (error != Error::NONE) {
return error;
}
mReader.takePresentOrValidateStage(display, state);
if (*state == 1) { // Present succeeded
mReader.takePresentFence(display, outPresentFence);
}
if (*state == 0) { // Validate succeeded.
mReader.hasChanges(display, outNumTypes, outNumRequests);
}
return Error::NONE;
}
Error Composer::setCursorPosition(Display display, Layer layer,
int32_t x, int32_t y)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerCursorPosition(x, y);
return Error::NONE;
}
Error Composer::setLayerBuffer(Display display, Layer layer,
uint32_t slot, const sp<GraphicBuffer>& buffer, int acquireFence)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
if (mIsUsingVrComposer && buffer.get()) {
IVrComposerClient::BufferMetadata metadata = {
.width = buffer->getWidth(),
.height = buffer->getHeight(),
.stride = buffer->getStride(),
.layerCount = buffer->getLayerCount(),
.format = static_cast<PixelFormat>(buffer->getPixelFormat()),
.usage = buffer->getUsage(),
};
mWriter.setLayerBufferMetadata(metadata);
}
const native_handle_t* handle = nullptr;
if (buffer.get()) {
handle = buffer->getNativeBuffer()->handle;
}
mWriter.setLayerBuffer(slot, handle, acquireFence);
return Error::NONE;
}
Error Composer::setLayerSurfaceDamage(Display display, Layer layer,
const std::vector<IComposerClient::Rect>& damage)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerSurfaceDamage(damage);
return Error::NONE;
}
Error Composer::setLayerBlendMode(Display display, Layer layer,
IComposerClient::BlendMode mode)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerBlendMode(mode);
return Error::NONE;
}
Error Composer::setLayerColor(Display display, Layer layer,
const IComposerClient::Color& color)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerColor(color);
return Error::NONE;
}
Error Composer::setLayerCompositionType(Display display, Layer layer,
IComposerClient::Composition type)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerCompositionType(type);
return Error::NONE;
}
Error Composer::setLayerDataspace(Display display, Layer layer,
Dataspace dataspace)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerDataspace(dataspace);
return Error::NONE;
}
Error Composer::setLayerDisplayFrame(Display display, Layer layer,
const IComposerClient::Rect& frame)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerDisplayFrame(frame);
return Error::NONE;
}
Error Composer::setLayerPlaneAlpha(Display display, Layer layer,
float alpha)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerPlaneAlpha(alpha);
return Error::NONE;
}
Error Composer::setLayerSidebandStream(Display display, Layer layer,
const native_handle_t* stream)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerSidebandStream(stream);
return Error::NONE;
}
Error Composer::setLayerSourceCrop(Display display, Layer layer,
const IComposerClient::FRect& crop)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerSourceCrop(crop);
return Error::NONE;
}
Error Composer::setLayerTransform(Display display, Layer layer,
Transform transform)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerTransform(transform);
return Error::NONE;
}
Error Composer::setLayerVisibleRegion(Display display, Layer layer,
const std::vector<IComposerClient::Rect>& visible)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerVisibleRegion(visible);
return Error::NONE;
}
Error Composer::setLayerZOrder(Display display, Layer layer, uint32_t z)
{
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerZOrder(z);
return Error::NONE;
}
Error Composer::setLayerInfo(Display display, Layer layer, uint32_t type,
uint32_t appId)
{
if (mIsUsingVrComposer) {
mWriter.selectDisplay(display);
mWriter.selectLayer(layer);
mWriter.setLayerInfo(type, appId);
}
return Error::NONE;
}
Error Composer::execute()
{
// prepare input command queue
bool queueChanged = false;
uint32_t commandLength = 0;
hidl_vec<hidl_handle> commandHandles;
if (!mWriter.writeQueue(&queueChanged, &commandLength, &commandHandles)) {
mWriter.reset();
return Error::NO_RESOURCES;
}
// set up new input command queue if necessary
if (queueChanged) {
auto ret = mClient->setInputCommandQueue(*mWriter.getMQDescriptor());
auto error = unwrapRet(ret);
if (error != Error::NONE) {
mWriter.reset();
return error;
}
}
Error error = kDefaultError;
auto ret = mClient->executeCommands(commandLength, commandHandles,
[&](const auto& tmpError, const auto& tmpOutChanged,
const auto& tmpOutLength, const auto& tmpOutHandles)
{
error = tmpError;
// set up new output command queue if necessary
if (error == Error::NONE && tmpOutChanged) {
error = kDefaultError;
mClient->getOutputCommandQueue(
[&](const auto& tmpError,
const auto& tmpDescriptor)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
mReader.setMQDescriptor(tmpDescriptor);
});
}
if (error != Error::NONE) {
return;
}
if (mReader.readQueue(tmpOutLength, tmpOutHandles)) {
error = mReader.parse();
mReader.reset();
} else {
error = Error::NO_RESOURCES;
}
});
// executeCommands can fail because of out-of-fd and we do not want to
// abort() in that case
if (!ret.isOk()) {
ALOGE("executeCommands failed because of %s", ret.description().c_str());
}
if (error == Error::NONE) {
std::vector<CommandReader::CommandError> commandErrors =
mReader.takeErrors();
for (const auto& cmdErr : commandErrors) {
auto command = mWriter.getCommand(cmdErr.location);
if (command == IComposerClient::Command::VALIDATE_DISPLAY ||
command == IComposerClient::Command::PRESENT_DISPLAY ||
command == IComposerClient::Command::PRESENT_OR_VALIDATE_DISPLAY) {
error = cmdErr.error;
} else {
ALOGW("command 0x%x generated error %d",
command, cmdErr.error);
}
}
}
mWriter.reset();
return error;
}
CommandReader::~CommandReader()
{
resetData();
}
Error CommandReader::parse()
{
resetData();
IComposerClient::Command command;
uint16_t length = 0;
while (!isEmpty()) {
if (!beginCommand(&command, &length)) {
break;
}
bool parsed = false;
switch (command) {
case IComposerClient::Command::SELECT_DISPLAY:
parsed = parseSelectDisplay(length);
break;
case IComposerClient::Command::SET_ERROR:
parsed = parseSetError(length);
break;
case IComposerClient::Command::SET_CHANGED_COMPOSITION_TYPES:
parsed = parseSetChangedCompositionTypes(length);
break;
case IComposerClient::Command::SET_DISPLAY_REQUESTS:
parsed = parseSetDisplayRequests(length);
break;
case IComposerClient::Command::SET_PRESENT_FENCE:
parsed = parseSetPresentFence(length);
break;
case IComposerClient::Command::SET_RELEASE_FENCES:
parsed = parseSetReleaseFences(length);
break;
case IComposerClient::Command ::SET_PRESENT_OR_VALIDATE_DISPLAY_RESULT:
parsed = parseSetPresentOrValidateDisplayResult(length);
break;
default:
parsed = false;
break;
}
endCommand();
if (!parsed) {
ALOGE("failed to parse command 0x%x length %" PRIu16,
command, length);
break;
}
}
return isEmpty() ? Error::NONE : Error::NO_RESOURCES;
}
bool CommandReader::parseSelectDisplay(uint16_t length)
{
if (length != CommandWriterBase::kSelectDisplayLength) {
return false;
}
mCurrentReturnData = &mReturnData[read64()];
return true;
}
bool CommandReader::parseSetError(uint16_t length)
{
if (length != CommandWriterBase::kSetErrorLength) {
return false;
}
auto location = read();
auto error = static_cast<Error>(readSigned());
mErrors.emplace_back(CommandError{location, error});
return true;
}
bool CommandReader::parseSetChangedCompositionTypes(uint16_t length)
{
// (layer id, composition type) pairs
if (length % 3 != 0 || !mCurrentReturnData) {
return false;
}
uint32_t count = length / 3;
mCurrentReturnData->changedLayers.reserve(count);
mCurrentReturnData->compositionTypes.reserve(count);
while (count > 0) {
auto layer = read64();
auto type = static_cast<IComposerClient::Composition>(readSigned());
mCurrentReturnData->changedLayers.push_back(layer);
mCurrentReturnData->compositionTypes.push_back(type);
count--;
}
return true;
}
bool CommandReader::parseSetDisplayRequests(uint16_t length)
{
// display requests followed by (layer id, layer requests) pairs
if (length % 3 != 1 || !mCurrentReturnData) {
return false;
}
mCurrentReturnData->displayRequests = read();
uint32_t count = (length - 1) / 3;
mCurrentReturnData->requestedLayers.reserve(count);
mCurrentReturnData->requestMasks.reserve(count);
while (count > 0) {
auto layer = read64();
auto layerRequestMask = read();
mCurrentReturnData->requestedLayers.push_back(layer);
mCurrentReturnData->requestMasks.push_back(layerRequestMask);
count--;
}
return true;
}
bool CommandReader::parseSetPresentFence(uint16_t length)
{
if (length != CommandWriterBase::kSetPresentFenceLength ||
!mCurrentReturnData) {
return false;
}
if (mCurrentReturnData->presentFence >= 0) {
close(mCurrentReturnData->presentFence);
}
mCurrentReturnData->presentFence = readFence();
return true;
}
bool CommandReader::parseSetReleaseFences(uint16_t length)
{
// (layer id, release fence index) pairs
if (length % 3 != 0 || !mCurrentReturnData) {
return false;
}
uint32_t count = length / 3;
mCurrentReturnData->releasedLayers.reserve(count);
mCurrentReturnData->releaseFences.reserve(count);
while (count > 0) {
auto layer = read64();
auto fence = readFence();
mCurrentReturnData->releasedLayers.push_back(layer);
mCurrentReturnData->releaseFences.push_back(fence);
count--;
}
return true;
}
bool CommandReader::parseSetPresentOrValidateDisplayResult(uint16_t length)
{
if (length != CommandWriterBase::kPresentOrValidateDisplayResultLength || !mCurrentReturnData) {
return false;
}
mCurrentReturnData->presentOrValidateState = read();
return true;
}
void CommandReader::resetData()
{
mErrors.clear();
for (auto& data : mReturnData) {
if (data.second.presentFence >= 0) {
close(data.second.presentFence);
}
for (auto fence : data.second.releaseFences) {
if (fence >= 0) {
close(fence);
}
}
}
mReturnData.clear();
mCurrentReturnData = nullptr;
}
std::vector<CommandReader::CommandError> CommandReader::takeErrors()
{
return std::move(mErrors);
}
bool CommandReader::hasChanges(Display display,
uint32_t* outNumChangedCompositionTypes,
uint32_t* outNumLayerRequestMasks) const
{
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
*outNumChangedCompositionTypes = 0;
*outNumLayerRequestMasks = 0;
return false;
}
const ReturnData& data = found->second;
*outNumChangedCompositionTypes = data.compositionTypes.size();
*outNumLayerRequestMasks = data.requestMasks.size();
return !(data.compositionTypes.empty() && data.requestMasks.empty());
}
void CommandReader::takeChangedCompositionTypes(Display display,
std::vector<Layer>* outLayers,
std::vector<IComposerClient::Composition>* outTypes)
{
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
outLayers->clear();
outTypes->clear();
return;
}
ReturnData& data = found->second;
*outLayers = std::move(data.changedLayers);
*outTypes = std::move(data.compositionTypes);
}
void CommandReader::takeDisplayRequests(Display display,
uint32_t* outDisplayRequestMask, std::vector<Layer>* outLayers,
std::vector<uint32_t>* outLayerRequestMasks)
{
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
*outDisplayRequestMask = 0;
outLayers->clear();
outLayerRequestMasks->clear();
return;
}
ReturnData& data = found->second;
*outDisplayRequestMask = data.displayRequests;
*outLayers = std::move(data.requestedLayers);
*outLayerRequestMasks = std::move(data.requestMasks);
}
void CommandReader::takeReleaseFences(Display display,
std::vector<Layer>* outLayers, std::vector<int>* outReleaseFences)
{
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
outLayers->clear();
outReleaseFences->clear();
return;
}
ReturnData& data = found->second;
*outLayers = std::move(data.releasedLayers);
*outReleaseFences = std::move(data.releaseFences);
}
void CommandReader::takePresentFence(Display display, int* outPresentFence)
{
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
*outPresentFence = -1;
return;
}
ReturnData& data = found->second;
*outPresentFence = data.presentFence;
data.presentFence = -1;
}
void CommandReader::takePresentOrValidateStage(Display display, uint32_t* state) {
auto found = mReturnData.find(display);
if (found == mReturnData.end()) {
*state= -1;
return;
}
ReturnData& data = found->second;
*state = data.presentOrValidateState;
}
} // namespace Hwc2
} // namespace android