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48 lines
1.9 KiB
48 lines
1.9 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.frameworks.bufferhub@1.0;
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interface IBufferClient {
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/**
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* Creates a token that could be used for IBufferHub::import function later.
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*
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* @return token A per-boot-unique token in handle format. The content of
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* token is opaque and implementation defined. Could be used for create
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* another IBufferClient via IBufferHub::import function.
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* @return status The result of this operation. NO_ERROR on success,
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* error codes on failure.
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*/
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duplicate() generates (handle token, BufferHubStatus status);
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/**
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* Closes this client.
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*
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* All further function calls must return CLIENT_CLOSED. All the unused
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* tokens generated by this client via IBufferClient::duplicate must become
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* invalid, and try to use them for import will return INVALID_TOKEN.
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*
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* Calling close must immediately free the underlying buffers if they are
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* only used by this client, but the client must also be freed after
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* calling this method.
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*
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* User may manually call this function to avoid race condition caused by
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* asynchronous destructors.
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*
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* @return status The result of this operation. NO_ERROR on success,
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* error codes on failure.
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*/
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close() generates (BufferHubStatus status);
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}; |