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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2023 Google Inc. All rights reserved.
// http://ceres-solver.org/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Author: keir@google.com (Keir Mierle)
#include "ceres/evaluator.h"
#include <memory>
#include <vector>
#include "absl/log/check.h"
#include "ceres/block_evaluate_preparer.h"
#include "ceres/block_jacobian_writer.h"
#include "ceres/compressed_row_jacobian_writer.h"
#include "ceres/compressed_row_sparse_matrix.h"
#include "ceres/crs_matrix.h"
#include "ceres/dense_jacobian_writer.h"
#include "ceres/dynamic_compressed_row_finalizer.h"
#include "ceres/dynamic_compressed_row_jacobian_writer.h"
#include "ceres/internal/export.h"
#include "ceres/program_evaluator.h"
#include "ceres/scratch_evaluate_preparer.h"
namespace ceres::internal {
Evaluator::~Evaluator() = default;
std::unique_ptr<Evaluator> Evaluator::Create(const Evaluator::Options& options,
Program* program,
std::string* error) {
CHECK(options.context != nullptr);
switch (options.linear_solver_type) {
case DENSE_QR:
case DENSE_NORMAL_CHOLESKY:
return std::make_unique<
ProgramEvaluator<ScratchEvaluatePreparer, DenseJacobianWriter>>(
options, program);
case DENSE_SCHUR:
case SPARSE_SCHUR:
case ITERATIVE_SCHUR: {
return std::make_unique<
ProgramEvaluator<BlockEvaluatePreparer, BlockJacobianWriter>>(
options, program);
}
case CGNR: {
if (options.sparse_linear_algebra_library_type == CUDA_SPARSE) {
return std::make_unique<ProgramEvaluator<ScratchEvaluatePreparer,
CompressedRowJacobianWriter>>(
options, program);
} else {
return std::make_unique<
ProgramEvaluator<BlockEvaluatePreparer, BlockJacobianWriter>>(
options, program);
}
}
case SPARSE_NORMAL_CHOLESKY:
if (options.dynamic_sparsity) {
return std::make_unique<
ProgramEvaluator<ScratchEvaluatePreparer,
DynamicCompressedRowJacobianWriter,
DynamicCompressedRowJacobianFinalizer>>(options,
program);
} else {
return std::make_unique<
ProgramEvaluator<BlockEvaluatePreparer, BlockJacobianWriter>>(
options, program);
}
default:
*error = "Invalid Linear Solver Type. Unable to create evaluator.";
return nullptr;
}
}
} // namespace ceres::internal