1 files changed, 52 insertions, 0 deletions
diff --git a/include/qpdf/Constants.h b/include/qpdf/Constants.h
new file mode 100644
index 00000000..31cefd54
--- /dev/null
+++ b/include/qpdf/Constants.h
@@ -0,0 +1,52 @@
+#ifndef __QPDFCONSTANTS_H__
+#define __QPDFCONSTANTS_H__
+
+/* Keep this file 'C' compatible so it can be used from the C and C++
+ * interfaces.
+ */
+
+/* Error Codes */
+
+enum qpdf_error_code_e
+{
+    qpdf_e_success = 0,
+    qpdf_e_internal,		/* logic/programming error -- indicates bug */
+    qpdf_e_system,		/* I/O error, memory error, etc. */
+    qpdf_e_unsupported,		/* PDF feature not (yet) supported by qpdf */
+    qpdf_e_password,		/* incorrect password for encrypted file */
+    qpdf_e_damaged_pdf		/* syntax errors or other damage in PDF */
+};
+
+/* Write Parameters */
+
+enum qpdf_object_stream_e
+{
+    qpdf_o_disable = 0,		/* disable object streams */
+    qpdf_o_preserve,		/* preserve object streams */
+    qpdf_o_generate		/* generate object streams */
+};
+enum qpdf_stream_data_e
+{
+    qpdf_s_uncompress = 0,	/* uncompress stream data */
+    qpdf_s_preserve,		/* preserve stream data compression */
+    qpdf_s_compress		/* compress stream data */
+};
+
+/* R3 Encryption Parameters */
+
+enum qpdf_r3_print_e
+{
+    qpdf_r3p_full = 0,		/* allow all printing */
+    qpdf_r3p_low,		/* allow only low-resolution printing */
+    qpdf_r3p_none		/* allow no printing */
+};
+enum qpdf_r3_modify_e
+{
+    qpdf_r3m_all = 0,		/* allow all modification */
+    qpdf_r3m_annotate,	      /* allow comment authoring and form operations */
+    qpdf_r3m_form,		/* allow form field fill-in or signing */
+    qpdf_r3m_assembly,		/* allow only document assembly */
+    qpdf_r3m_none		/* allow no modification */
+};
+
+#endif /* __QPDFCONSTANTS_H__ */