formats/jpeg/c2pa_segment_handler.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_JPEG_C2PA_SEGMENT_HANDLER_H_
#define THIRD_PARTY_CREDENTIO_FORMATS_JPEG_C2PA_SEGMENT_HANDLER_H_

#include <cstdint>
#include <string>
#include <vector>

#include "absl/container/flat_hash_map.h"
#include "absl/container/flat_hash_set.h"
#include "absl/status/statusor.h"
#include "formats/jpeg/reader.h"
#include "riegeli/bytes/reader.h"

namespace credentio {

class C2paSegmentHandler {
 public:
  struct Segment {
    JpegSegment segment;
    std::string manifest_store;
  };

  void RecordSegment(JpegSegment segment);

  absl::StatusOr<C2paSegmentHandler::Segment> GetC2paSegment(
      riegeli::Reader& input) const;

 protected:
  const absl::flat_hash_map<uint16_t, std::vector<JpegSegment>>& GetSegmentMap()
      const {
    return segment_map_;
  }

  const absl::flat_hash_set<uint16_t>& GetIgnoredSegmentIds() const {
    return ignored_segment_ids_;
  }

 private:
  absl::flat_hash_set<uint16_t> ignored_segment_ids_;
  absl::flat_hash_map<uint16_t, std::vector<JpegSegment>> segment_map_;
};

}  // namespace credentio

#endif  // THIRD_PARTY_CREDENTIO_FORMATS_JPEG_C2PA_SEGMENT_HANDLER_H_