Add fz_output encoding filters.

1 files changed, 19 insertions, 0 deletions

diff --git a/include/mupdf/fitz/output.h b/include/mupdf/fitz/output.h
index e9e13c8e..c3fede3e 100644
--- a/include/mupdf/fitz/output.h
+++ b/include/mupdf/fitz/output.h
@@ -295,4 +295,23 @@ char *fz_tempfilename(fz_context *ctx, const char *base, const char *hint);
 */
 void fz_save_buffer(fz_context *ctx, fz_buffer *buf, const char *filename);
 
+/*
+	Compression and other filtering outputs.
+
+	These outputs write encoded data to another output. Create a filter
+	output with the destination, write to the filter, then drop it when
+	you're done. These can also be chained together, for example to write
+	ASCII Hex encoded, Deflate compressed, and RC4 encrypted data to a
+	buffer output.
+
+	Output streams don't use reference counting, so make sure to drop all
+	of the filters in the reverse order of creation so that data is flushed
+	properly.
+*/
+fz_output *fz_new_asciihex_output(fz_context *ctx, fz_output *chain);
+fz_output *fz_new_ascii85_output(fz_context *ctx, fz_output *chain);
+fz_output *fz_new_rle_output(fz_context *ctx, fz_output *chain);
+fz_output *fz_new_arc4_output(fz_context *ctx, fz_output *chain, unsigned char *key, size_t keylen);
+fz_output *fz_new_deflate_output(fz_context *ctx, fz_output *chain, int effort, int raw);
+
 #endif