54 lines
2.0 KiB
C++
54 lines
2.0 KiB
C++
// Copyright 2020 The MediaPipe 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 "mediapipe/util/tflite/tflite_model_loader.h"
|
|
|
|
#include "mediapipe/framework/port/ret_check.h"
|
|
#include "mediapipe/util/resource_util.h"
|
|
|
|
namespace mediapipe {
|
|
|
|
absl::StatusOr<api2::Packet<TfLiteModelPtr>> TfLiteModelLoader::LoadFromPath(
|
|
const std::string& path) {
|
|
std::string model_path = path;
|
|
|
|
std::string model_blob;
|
|
auto status_or_content =
|
|
mediapipe::GetResourceContents(model_path, &model_blob);
|
|
// TODO: get rid of manual resolving with PathToResourceAsFile
|
|
// as soon as it's incorporated into GetResourceContents.
|
|
if (!status_or_content.ok()) {
|
|
LOG(WARNING)
|
|
<< "Trying to resolve path manually as GetResourceContents failed: "
|
|
<< status_or_content.message();
|
|
ASSIGN_OR_RETURN(auto resolved_path,
|
|
mediapipe::PathToResourceAsFile(model_path));
|
|
MP_RETURN_IF_ERROR(
|
|
mediapipe::GetResourceContents(resolved_path, &model_blob));
|
|
}
|
|
|
|
auto model = tflite::FlatBufferModel::VerifyAndBuildFromBuffer(
|
|
model_blob.data(), model_blob.size());
|
|
RET_CHECK(model) << "Failed to load model from path " << model_path;
|
|
return api2::MakePacket<TfLiteModelPtr>(
|
|
model.release(),
|
|
[model_blob = std::move(model_blob)](tflite::FlatBufferModel* model) {
|
|
// It's required that model_blob is deleted only after
|
|
// model is deleted, hence capturing model_blob.
|
|
delete model;
|
|
});
|
|
}
|
|
|
|
} // namespace mediapipe
|