1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "EmbeddingLookup.h" 18 19 #include "CpuExecutor.h" 20 #include "Operations.h" 21 22 #include "Tracing.h" 23 24 namespace android { 25 namespace nn { 26 27 EmbeddingLookup::EmbeddingLookup(const Operation& operation, 28 std::vector<RunTimeOperandInfo>& operands) { 29 value_ = GetInput(operation, operands, kValueTensor); 30 lookup_ = GetInput(operation, operands, kLookupTensor); 31 32 output_ = GetOutput(operation, operands, kOutputTensor); 33 } 34 35 bool EmbeddingLookup::Eval() { 36 NNTRACE_COMP("EmbeddingLookup::Eval"); 37 const int row_size = value_->shape().dimensions[0]; 38 const int total_bytes = nonExtensionOperandSizeOfData(value_->type, value_->dimensions); 39 const int row_bytes = total_bytes/row_size; 40 41 for (uint32_t i = 0; i < lookup_->shape().dimensions[0]; i++) { 42 int idx = (reinterpret_cast<int*>(lookup_->buffer))[i]; 43 if (idx >= row_size || idx < 0) { 44 LOG(ERROR) << "Embedding Lookup: index out of bounds."; 45 return false; 46 } else { 47 memcpy(output_->buffer + i * row_bytes, value_->buffer + idx * row_bytes, 48 row_bytes); 49 } 50 } 51 52 return true; 53 } 54 55 } // namespace nn 56 } // namespace android 57
