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//------------------------------------------------------------------------------
// gbdeserialize: deserialize a blob into a matrix
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// gbdeserialize is an interface to GrB_Matrix_deserialize.
// Usage:
// A = gbdeserialize (blob)
#include "gb_interface.h"
#define USAGE "usage: A = GrB.deserialize (blob)"
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
gb_usage ((nargin >= 1 || nargin <= 3) && nargout <= 1, USAGE) ;
CHECK_ERROR (mxGetClassID (pargin [0]) != mxUINT8_CLASS
|| mxIsSparse (pargin [0]), "blob must be a uint8 dense matrix/vector");
//--------------------------------------------------------------------------
// get the blob, normally a row or column vector, but can be a dense matrix
//--------------------------------------------------------------------------
void *blob = mxGetData (pargin [0]) ;
GrB_Index m = (GrB_Index) mxGetM (pargin [0]) ;
GrB_Index n = (GrB_Index) mxGetN (pargin [0]) ;
GrB_Index blob_size = m*n ;
//--------------------------------------------------------------------------
// deserialize the blob into a matrix
//--------------------------------------------------------------------------
GrB_Matrix C = NULL ;
OK (GrB_Matrix_deserialize (&C, NULL, blob, blob_size)) ;
//--------------------------------------------------------------------------
// export the output matrix C
//--------------------------------------------------------------------------
pargout [0] = gb_export (&C, KIND_GRB) ;
GB_WRAPUP ;
}
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