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44 lines
1.7 KiB
44 lines
1.7 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.hardware.media.bufferpool@1.0;
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/**
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* A connection to a buffer pool which handles requests from a buffer pool
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* client. The connection must be made in order to receive buffers from
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* other buffer pool clients.
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*/
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interface IConnection {
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/**
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* Retrieves a buffer using bufferId. The method must be called from
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* receiving side of buffer during transferring only when the specified
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* buffer is neither cached nor used. This fails if the specified
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* transaction is not valid.
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*
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* @param transactionId Unique transaction id for buffer transferring.
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* @param bufferId Id of the buffer to be fetched.
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* @return status The status of the call.
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* OK - A buffer was fetched successfully.
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* NO_MEMORY - Memory allocation failure occurred.
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* NOT_FOUND - A buffer was not found due to invalidation.
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* CRITICAL_ERROR - Other errors.
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* @return buffer The actual buffer which is specified with bufferId.
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*/
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fetch(uint64_t transactionId, uint32_t bufferId) generates
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(ResultStatus status, Buffer buffer);
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};
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