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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 | // 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/conversation/model_data_processor/data_utils.h"
#include <memory>
#include <string>
#include "absl/status/status.h" // from @com_google_absl
#include "absl/status/statusor.h" // from @com_google_absl
#include "absl/strings/escaping.h" // from @com_google_absl
#include "nlohmann/json.hpp" // from @nlohmann_json
#include "runtime/util/memory_mapped_file.h"
namespace litert::lm {
using ::nlohmann::ordered_json;
absl::StatusOr<std::unique_ptr<MemoryMappedFile>> LoadItemData(
const ordered_json& item) {
if (!item.contains("type")) {
// If `item` doesn't contain a type, it won't be loaded.
return nullptr;
}
if (item["type"] == "text") {
return InMemoryFile::Create(item["text"]);
} else if (item["type"] == "image" || item["type"] == "audio") {
if (item.contains("path")) {
return MemoryMappedFile::Create(item["path"].get<std::string>());
}
if (item.contains("blob")) {
std::string blob_b64 = item["blob"].get<std::string>();
std::string blob;
if (!absl::Base64Unescape(blob_b64, &blob)) {
return absl::InvalidArgumentError("Failed to decode base64 blob.");
}
return InMemoryFile::Create(blob);
}
return absl::InvalidArgumentError(
"Audio or image item must contain a path or blob.");
} else if (item["type"] == "tool_response") {
return nullptr;
}
return absl::UnimplementedError("Unsupported item type: " +
item["type"].get<std::string>());
}
} // namespace litert::lm
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