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/*
* Copyright (C) 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 <android/hardware_buffer.h>
#include <bufferhub/BufferHubService.h>
#include <cutils/native_handle.h>
#include <log/log.h>
namespace android {
namespace frameworks {
namespace bufferhub {
namespace V1_0 {
namespace implementation {
using hardware::Void;
Return<void> BufferHubService::allocateBuffer(const HardwareBufferDescription& description,
const uint32_t userMetadataSize,
allocateBuffer_cb _hidl_cb) {
AHardwareBuffer_Desc desc;
memcpy(&desc, &description, sizeof(AHardwareBuffer_Desc));
std::shared_ptr<BufferNode> node =
std::make_shared<BufferNode>(desc.width, desc.height, desc.layers, desc.format,
desc.usage, userMetadataSize);
if (node == nullptr || !node->IsValid()) {
ALOGE("%s: creating BufferNode failed.", __FUNCTION__);
_hidl_cb(/*bufferClient=*/nullptr, /*status=*/BufferHubStatus::ALLOCATION_FAILED);
return Void();
}
sp<BufferClient> client = BufferClient::create(this, node);
// Add it to list for bookkeeping and dumpsys.
std::lock_guard<std::mutex> lock(mClientListMutex);
mClientList.push_back(client);
_hidl_cb(/*bufferClient=*/client, /*status=*/BufferHubStatus::NO_ERROR);
return Void();
}
Return<void> BufferHubService::importBuffer(const hidl_handle& /*nativeHandle*/,
importBuffer_cb _hidl_cb) {
// TODO(b/118614157): implement buffer import
_hidl_cb(/*bufferClient=*/nullptr, /*status=*/BufferHubStatus::NO_ERROR);
return Void();
}
hidl_handle BufferHubService::registerToken(const BufferClient* client) {
uint32_t token;
std::lock_guard<std::mutex> lock(mTokenMapMutex);
do {
token = mTokenEngine();
} while (mTokenMap.find(token) != mTokenMap.end());
// native_handle_t use int[], so here need one slots to fit in uint32_t
native_handle_t* handle = native_handle_create(/*numFds=*/0, /*numInts=*/1);
handle->data[0] = token;
// returnToken owns the native_handle_t* thus doing lifecycle management
hidl_handle returnToken;
returnToken.setTo(handle, /*shoudOwn=*/true);
mTokenMap.emplace(token, client);
return returnToken;
}
} // namespace implementation
} // namespace V1_0
} // namespace bufferhub
} // namespace frameworks
} // namespace android
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