|  | // Ceres Solver - A fast non-linear least squares minimizer | 
|  | // Copyright 2015 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 | 
|  | // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 
|  | // 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 "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" | 
|  | #include "glog/logging.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: | 
|  | 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 |