faiss/c_api/index_io_c.cpp
Eduardo Pinho 9efdd8d427 [C API] Additional API coverage: IndexLSH, I/O, meta-indexes (#425)
* [c_api] leverage index downcast

- make index downcast declaration+definition possible with macros
- use macros on existing index types

* [c_api] Add IndexLSH to C API

* [c_api] Add Index IO interface

- new header index_io_c.h for access to the index_io.h API
- function`faiss_write_index` and overloads for dumping index to a file
- function`faiss_read_index` and overloads for reading index from a file
- function`faiss_clone_index` for cloning an index
- update C example to save index to a file

* [c_api] Add IndexIDMap and IndexShards API
2018-05-02 13:39:59 +02:00

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD+Patents license found in the
* LICENSE file in the root directory of this source tree.
*/
// Copyright 2004-present Facebook. All Rights Reserved
// -*- c++ -*-
// I/O code for indexes
#include "index_io_c.h"
#include "index_io.h"
#include "macros_impl.h"
using faiss::Index;
int faiss_write_index(const FaissIndex *idx, FILE *f) {
try {
faiss::write_index(reinterpret_cast<const Index*>(idx), f);
} CATCH_AND_HANDLE
}
int faiss_write_index_fname(const FaissIndex *idx, const char *fname) {
try {
faiss::write_index(reinterpret_cast<const Index*>(idx), fname);
} CATCH_AND_HANDLE
}
int faiss_read_index(FILE *f, int io_flags, FaissIndex **p_out) {
try {
auto out = faiss::read_index(f, io_flags);
*p_out = reinterpret_cast<FaissIndex*>(out);
} CATCH_AND_HANDLE
}
int faiss_read_index_fname(const char *fname, int io_flags, FaissIndex **p_out) {
try {
auto out = faiss::read_index(fname, io_flags);
*p_out = reinterpret_cast<FaissIndex*>(out);
} CATCH_AND_HANDLE
}
int faiss_clone_index (const FaissIndex *idx, FaissIndex **p_out) {
try {
auto out = faiss::clone_index(reinterpret_cast<const Index*>(idx));
*p_out = reinterpret_cast<FaissIndex*>(out);
} CATCH_AND_HANDLE
}