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-rw-r--r--include/mupdf/pdf/output-pdf.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/mupdf/pdf/output-pdf.h b/include/mupdf/pdf/output-pdf.h
index 1e783201..617d32fc 100644
--- a/include/mupdf/pdf/output-pdf.h
+++ b/include/mupdf/pdf/output-pdf.h
@@ -5,6 +5,10 @@
pdf_new_pdf_device: Create a pdf device. Rendering to the device creates
new pdf content. WARNING: this device is work in progress. It doesn't
currently support all rendering cases.
+
+ Note that contents must be a stream (dictionary) to be updated (or
+ a reference to a stream). Callers should take care to ensure that it
+ is not an array, and that is it not shared with other objects/pages.
*/
fz_device *pdf_new_pdf_device(fz_context *ctx, pdf_document *doc, pdf_obj *contents, pdf_obj *resources, const fz_matrix *ctm, fz_buffer *buf);