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/*
* Copyright 2019 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.
*/
package android.hardware.graphics.allocator@4.0;
import android.hardware.graphics.mapper@4.0;
interface IAllocator {
/**
* Allocates buffers with the properties specified by the descriptor.
*
* Allocations should be optimized for usage bits provided in the
* descriptor.
*
* @param descriptor Properties of the buffers to allocate. This must be
* obtained from IMapper::createDescriptor().
* @param count The number of buffers to allocate.
* @return error Error status of the call, which may be
* - `NONE` upon success.
* - `BAD_DESCRIPTOR` if the descriptor is invalid.
* - `NO_RESOURCES` if the allocation cannot be fulfilled at this time.
* - `UNSUPPORTED` if any of the properties encoded in the descriptor
* are not supported.
* @return stride The number of pixels between two consecutive rows of
* an allocated buffer, when the concept of consecutive rows is defined.
* Otherwise, it has no meaning.
* @return buffers Array of raw handles to the allocated buffers.
*/
allocate(BufferDescriptor descriptor, uint32_t count)
generates (Error error,
uint32_t stride,
vec<handle> buffers);
};
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