C++ (Cpp) ddjvu_document_decoding_errorの例

コード例 #1

ファイル: djvumodel.cpp プロジェクト: counterstriker/qtapplications

Model::Document* DjVuPlugin::loadDocument(const QString& filePath) const
{
    ddjvu_context_t* context = ddjvu_context_create("qpdfview");
    ddjvu_document_t* document = ddjvu_document_create_by_filename(context, QFile::encodeName(filePath), FALSE);

    if(document == 0)
    {
        ddjvu_context_release(context);

        return 0;
    }

    waitForMessageTag(context, DDJVU_DOCINFO);

    if(ddjvu_document_decoding_error(document))
    {
        ddjvu_document_release(document);
        ddjvu_context_release(context);

        return 0;
    }

    return new Model::DjVuDocument(context, document);
}

コード例 #2

zathura_error_t
djvu_document_open(zathura_document_t* document)
{
  zathura_error_t error = ZATHURA_ERROR_OK;

  if (document == NULL) {
    error = ZATHURA_ERROR_INVALID_ARGUMENTS;
    goto error_out;
  }

  djvu_document_t* djvu_document = calloc(1, sizeof(djvu_document_t));
  if (djvu_document == NULL) {
    error = ZATHURA_ERROR_OUT_OF_MEMORY;
    goto error_out;
  }

  /* setup format */
  static unsigned int masks[4] = {0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000};
  djvu_document->format = ddjvu_format_create(DDJVU_FORMAT_RGBMASK32, 4, masks);

  if (djvu_document->format == NULL) {
    error = ZATHURA_ERROR_UNKNOWN;
    goto error_free;
  }

  ddjvu_format_set_row_order(djvu_document->format, TRUE);

  /* setup context */
  djvu_document->context = ddjvu_context_create("zathura");

  if (djvu_document->context == NULL) {
    error = ZATHURA_ERROR_UNKNOWN;
    goto error_free;
  }

  /* setup document */
  djvu_document->document =
    ddjvu_document_create_by_filename(
        djvu_document->context,
        zathura_document_get_path(document),
        FALSE
    );

  if (djvu_document->document == NULL) {
    error = ZATHURA_ERROR_UNKNOWN;
    goto error_free;
  }

  /* load document info */
  ddjvu_message_t* msg;
  ddjvu_message_wait(djvu_document->context);

  while ((msg = ddjvu_message_peek(djvu_document->context)) &&
         (msg->m_any.tag != DDJVU_DOCINFO)) {
    if (msg->m_any.tag == DDJVU_ERROR) {
      error = ZATHURA_ERROR_UNKNOWN;
      goto error_free;
    }

    ddjvu_message_pop(djvu_document->context);
  }

  /* decoding error */
  if (ddjvu_document_decoding_error(djvu_document->document)) {
    handle_messages(djvu_document, true);
    error = ZATHURA_ERROR_UNKNOWN;
    goto error_free;
  }

  zathura_document_set_data(document, djvu_document);
  zathura_document_set_number_of_pages(document,
      ddjvu_document_get_pagenum(djvu_document->document));

  return error;

error_free:

  if (djvu_document->format != NULL) {
    ddjvu_format_release(djvu_document->format);
  }

  if (djvu_document->context != NULL) {
    ddjvu_context_release(djvu_document->context);
  }

  free(djvu_document);

error_out:

  return error;
}