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5f923cd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | // Copyright 2025 The ODML Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "runtime/components/model_resources_task.h"
#include <cstdint>
#include <memory>
#include <string>
#include <utility>
#include "absl/log/absl_log.h" // from @com_google_absl
#include "absl/memory/memory.h" // from @com_google_absl
#include "absl/status/status.h" // from @com_google_absl
#include "absl/status/statusor.h" // from @com_google_absl
#include "absl/strings/str_cat.h" // from @com_google_absl
#include "absl/strings/string_view.h" // from @com_google_absl
#include "litert/cc/litert_buffer_ref.h" // from @litert
#include "litert/cc/litert_macros.h" // from @litert
#include "litert/cc/litert_model.h" // from @litert
#include "runtime/components/model_resources.h"
#include "runtime/components/sentencepiece_tokenizer.h"
#include "runtime/components/tokenizer.h"
#include "runtime/util/metadata_util.h"
#include "runtime/util/model_asset_bundle_resources.h"
#include "runtime/util/status_macros.h"
namespace litert::lm {
using ::litert::BufferRef;
using ::litert::Model;
// static
absl::StatusOr<std::unique_ptr<ModelResources>> ModelResourcesTask::Create(
std::unique_ptr<ModelAssetBundleResources> model_asset_bundle_resources) {
auto model_resources = absl::WrapUnique(
new ModelResourcesTask(std::move(model_asset_bundle_resources)));
return model_resources;
}
absl::StatusOr<absl::string_view> ModelResourcesTask::GetTFLiteModelBuffer(
ModelType model_type) {
std::string model_file = litert::lm::ModelTypeToString(model_type);
return model_asset_bundle_resources_->GetFile(model_file);
};
absl::StatusOr<const litert::Model*> ModelResourcesTask::GetTFLiteModel(
ModelType model_type) {
auto it = model_map_.find(model_type);
if (it != model_map_.end()) {
return it->second.get();
}
std::string model_file = litert::lm::ModelTypeToString(model_type);
auto buffer = model_asset_bundle_resources_->GetFile(model_file);
if (!buffer.ok()) {
return absl::NotFoundError(absl::StrCat(ModelTypeToString(model_type),
" not found in the model."));
}
ABSL_LOG(INFO) << "litert model size: " << buffer->size();
auto buffer_ref = BufferRef<uint8_t>(buffer->data(), buffer->size());
LITERT_ASSIGN_OR_RETURN(auto model, Model::CreateFromBuffer(buffer_ref));
model_map_[model_type] = std::make_unique<Model>(std::move(model));
return model_map_[model_type].get();
}
absl::StatusOr<std::unique_ptr<Tokenizer>> ModelResourcesTask::GetTokenizer() {
ASSIGN_OR_RETURN(auto string_view,
model_asset_bundle_resources_->GetFile("TOKENIZER_MODEL"));
return SentencePieceTokenizer::CreateFromBuffer(string_view);
}
absl::StatusOr<const proto::LlmMetadata*> ModelResourcesTask::GetLlmMetadata() {
if (llm_metadata_ == nullptr) {
ASSIGN_OR_RETURN(auto string_view,
model_asset_bundle_resources_->GetFile("METADATA"));
ASSIGN_OR_RETURN(auto llm_metadata,
ExtractOrConvertLlmMetadata(string_view));
llm_metadata_ =
std::make_unique<proto::LlmMetadata>(std::move(llm_metadata));
ABSL_LOG(INFO) << "The llm metadata: " << llm_metadata_->DebugString();
}
return llm_metadata_.get();
};
} // namespace litert::lm
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