formats/id3/embedder.h

// Copyright 2026 Google LLC
//
// 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
//
//    https://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.
//

#ifndef THIRD_PARTY_CREDENTIO_FORMATS_ID3_EMBEDDER_H_
#define THIRD_PARTY_CREDENTIO_FORMATS_ID3_EMBEDDER_H_

#include <cstdint>

#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "riegeli/bytes/reader.h"
#include "riegeli/bytes/writer.h"

namespace credentio {

// A utility class for embedding a C2PA manifest store as a ID3v2 `GEOB` frame
// in a non-C2PA ID3-compatible audio file.
class Id3Embedder {
 public:
  explicit Id3Embedder() = default;

  absl::StatusOr<int64_t> CopyAndEmbed(riegeli::Reader& input,
                                       absl::string_view manifest_store,
                                       riegeli::Writer& output) const;
};
}  // namespace credentio

#endif  // THIRD_PARTY_CREDENTIO_FORMATS_ID3_EMBEDDER_H_