Method readMetadata

src/riffvideo.cpp:367–390

}  // RiffVideo::writeMetadata

void RiffVideo::readMetadata() {
  if (io_->open() != 0)
    throw Error(ErrorCode::kerDataSourceOpenFailed, io_->path(), strError());

  // Ensure that this is the correct image type
  if (!isRiffType(*io_, false)) {
    if (io_->error() || io_->eof())
      throw Error(ErrorCode::kerFailedToReadImageData);
    throw Error(ErrorCode::kerNotAnImage, "RIFF");
  }

  IoCloser closer(*io_);
  clearMetadata();

  xmpData_["Xmp.video.FileSize"] = io_->size();
  xmpData_["Xmp.video.MimeType"] = mimeType();

  HeaderReader header(io_);
  xmpData_["Xmp.video.Container"] = header.getId();

  xmpData_["Xmp.video.FileType"] = readStringTag(io_);

  decodeBlocks();
}  // RiffVideo::readMetadata

RiffVideo::HeaderReader::HeaderReader(const BasicIo::UniquePtr& io) {
  Internal::enforce(io->size() > io->tell() + DWORD + DWORD, Exiv2::ErrorCode::kerCorruptedMetadata);