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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.
*/
#define LOG_TAG "Gralloc2"
#include <hidl/ServiceManagement.h>
#include <hwbinder/IPCThreadState.h>
#include <ui/Gralloc2.h>
#include <log/log.h>
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wzero-length-array"
#include <sync/sync.h>
#pragma clang diagnostic pop
namespace android {
namespace Gralloc2 {
static constexpr Error kTransactionError = Error::NO_RESOURCES;
void Mapper::preload() {
android::hardware::preloadPassthroughService<hardware::graphics::mapper::V2_0::IMapper>();
}
Mapper::Mapper()
{
mMapper = IMapper::getService();
if (mMapper == nullptr || mMapper->isRemote()) {
LOG_ALWAYS_FATAL("gralloc-mapper must be in passthrough mode");
}
}
Error Mapper::createDescriptor(
const IMapper::BufferDescriptorInfo& descriptorInfo,
BufferDescriptor* outDescriptor) const
{
Error error;
auto ret = mMapper->createDescriptor(descriptorInfo,
[&](const auto& tmpError, const auto& tmpDescriptor)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
*outDescriptor = tmpDescriptor;
});
return (ret.isOk()) ? error : kTransactionError;
}
Error Mapper::importBuffer(const hardware::hidl_handle& rawHandle,
buffer_handle_t* outBufferHandle) const
{
Error error;
auto ret = mMapper->importBuffer(rawHandle,
[&](const auto& tmpError, const auto& tmpBuffer)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
*outBufferHandle = static_cast<buffer_handle_t>(tmpBuffer);
});
return (ret.isOk()) ? error : kTransactionError;
}
void Mapper::freeBuffer(buffer_handle_t bufferHandle) const
{
auto buffer = const_cast<native_handle_t*>(bufferHandle);
auto ret = mMapper->freeBuffer(buffer);
auto error = (ret.isOk()) ? static_cast<Error>(ret) : kTransactionError;
ALOGE_IF(error != Error::NONE, "freeBuffer(%p) failed with %d",
buffer, error);
}
Error Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage,
const IMapper::Rect& accessRegion,
int acquireFence, void** outData) const
{
auto buffer = const_cast<native_handle_t*>(bufferHandle);
// put acquireFence in a hidl_handle
hardware::hidl_handle acquireFenceHandle;
NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
if (acquireFence >= 0) {
auto h = native_handle_init(acquireFenceStorage, 1, 0);
h->data[0] = acquireFence;
acquireFenceHandle = h;
}
Error error;
auto ret = mMapper->lock(buffer, usage, accessRegion, acquireFenceHandle,
[&](const auto& tmpError, const auto& tmpData)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
*outData = tmpData;
});
// we own acquireFence even on errors
if (acquireFence >= 0) {
close(acquireFence);
}
return (ret.isOk()) ? error : kTransactionError;
}
Error Mapper::lock(buffer_handle_t bufferHandle, uint64_t usage,
const IMapper::Rect& accessRegion,
int acquireFence, YCbCrLayout* outLayout) const
{
auto buffer = const_cast<native_handle_t*>(bufferHandle);
// put acquireFence in a hidl_handle
hardware::hidl_handle acquireFenceHandle;
NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
if (acquireFence >= 0) {
auto h = native_handle_init(acquireFenceStorage, 1, 0);
h->data[0] = acquireFence;
acquireFenceHandle = h;
}
Error error;
auto ret = mMapper->lockYCbCr(buffer, usage, accessRegion,
acquireFenceHandle,
[&](const auto& tmpError, const auto& tmpLayout)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
*outLayout = tmpLayout;
});
// we own acquireFence even on errors
if (acquireFence >= 0) {
close(acquireFence);
}
return (ret.isOk()) ? error : kTransactionError;
}
int Mapper::unlock(buffer_handle_t bufferHandle) const
{
auto buffer = const_cast<native_handle_t*>(bufferHandle);
int releaseFence = -1;
Error error;
auto ret = mMapper->unlock(buffer,
[&](const auto& tmpError, const auto& tmpReleaseFence)
{
error = tmpError;
if (error != Error::NONE) {
return;
}
auto fenceHandle = tmpReleaseFence.getNativeHandle();
if (fenceHandle && fenceHandle->numFds == 1) {
int fd = dup(fenceHandle->data[0]);
if (fd >= 0) {
releaseFence = fd;
} else {
ALOGD("failed to dup unlock release fence");
sync_wait(fenceHandle->data[0], -1);
}
}
});
if (!ret.isOk()) {
error = kTransactionError;
}
if (error != Error::NONE) {
ALOGE("unlock(%p) failed with %d", buffer, error);
}
return releaseFence;
}
Allocator::Allocator(const Mapper& mapper)
: mMapper(mapper)
{
mAllocator = IAllocator::getService();
if (mAllocator == nullptr) {
LOG_ALWAYS_FATAL("gralloc-alloc is missing");
}
}
std::string Allocator::dumpDebugInfo() const
{
std::string debugInfo;
mAllocator->dumpDebugInfo([&](const auto& tmpDebugInfo) {
debugInfo = tmpDebugInfo.c_str();
});
return debugInfo;
}
Error Allocator::allocate(BufferDescriptor descriptor, uint32_t count,
uint32_t* outStride, buffer_handle_t* outBufferHandles) const
{
Error error;
auto ret = mAllocator->allocate(descriptor, count,
[&](const auto& tmpError, const auto& tmpStride,
const auto& tmpBuffers) {
error = tmpError;
if (tmpError != Error::NONE) {
return;
}
// import buffers
for (uint32_t i = 0; i < count; i++) {
error = mMapper.importBuffer(tmpBuffers[i],
&outBufferHandles[i]);
if (error != Error::NONE) {
for (uint32_t j = 0; j < i; j++) {
mMapper.freeBuffer(outBufferHandles[j]);
outBufferHandles[j] = nullptr;
}
return;
}
}
*outStride = tmpStride;
});
// make sure the kernel driver sees BC_FREE_BUFFER and closes the fds now
hardware::IPCThreadState::self()->flushCommands();
return (ret.isOk()) ? error : kTransactionError;
}
} // namespace Gralloc2
} // namespace android