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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.mapper@3.0;
/**
* Error values that may be returned by a method of IAllocator or IMapper.
*/
enum Error : int32_t {
/**
* No error.
*/
NONE = 0,
/**
* Invalid BufferDescriptor.
*/
BAD_DESCRIPTOR = 1,
/**
* Invalid buffer handle.
*/
BAD_BUFFER = 2,
/**
* Invalid HardwareBufferDescription.
*/
BAD_VALUE = 3,
/**
* Resource unavailable.
*/
NO_RESOURCES = 5,
/**
* Permanent failure.
*/
UNSUPPORTED = 7,
};
/**
* A buffer descriptor is an implementation-defined opaque data returned by
* createDescriptor(). It describes the properties of a buffer and is consumed
* by the allocator.
*/
typedef vec<uint32_t> BufferDescriptor;
/**
* Structure for describing YCbCr formats for consumption by applications.
* This is used with PixelFormat::YCBCR_*_888.
*
* Buffer chroma subsampling is defined in the format.
* e.g. PixelFormat::YCBCR_420_888 has subsampling 4:2:0.
*
* Buffers must have a 8 bit depth.
*
* y, cb, and cr point to the first byte of their respective planes.
*
* Stride describes the distance in bytes from the first value of one row of
* the image to the first value of the next row. It includes the width of the
* image plus padding.
* yStride is the stride of the luma plane.
* cStride is the stride of the chroma planes.
*
* chromaStep is the distance in bytes from one chroma pixel value to the
* next. This is 2 bytes for semiplanar (because chroma values are interleaved
* and each chroma value is one byte) and 1 for planar.
*/
struct YCbCrLayout {
pointer y;
pointer cb;
pointer cr;
uint32_t yStride;
uint32_t cStride;
uint32_t chromaStep;
};
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