Method previewTagDecoder

src/quicktimevideo.cpp:722–737

}  // QuickTimeVideo::discard

void QuickTimeVideo::previewTagDecoder(size_t size) {
  DataBuf buf(4);
  size_t cur_pos = io_->tell();
  io_->readOrThrow(buf.data(), 4);
  xmpData_["Xmp.video.PreviewDate"] = buf.read_uint32(0, bigEndian);
  io_->readOrThrow(buf.data(), 2);
  xmpData_["Xmp.video.PreviewVersion"] = getShort(buf.data(), bigEndian);

  io_->readOrThrow(buf.data(), 4);
  if (equalsQTimeTag(buf, "PICT"))
    xmpData_["Xmp.video.PreviewAtomType"] = "QuickDraw Picture";
  else
    xmpData_["Xmp.video.PreviewAtomType"] = std::string{buf.c_str(), 4};

  io_->seek(cur_pos + size, BasicIo::beg);
}  // QuickTimeVideo::previewTagDecoder

void QuickTimeVideo::keysTagDecoder(size_t size) {
  DataBuf buf(4);