Add CCITT_FAX mime type for PDF and PS surfaces

This completes the full set of PDF/PS image filters allowing image
data to be passed though without decompressing then recompresssing in
a less efficient format.

The difficulty with CCITT_FAX is it needs some decoding parameters
that are not stored inside the image data. This is achieved by using
an additional mime type CCITT_FAX_PARAMS that contains the params in
key=value format.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/cairo-tag-attributes-private.h b/src/cairo-tag-attributes-private.h
index a127abc97..30bb48ed9 100644
--- a/src/cairo-tag-attributes-private.h
+++ b/src/cairo-tag-attributes-private.h
@@ -68,10 +68,25 @@ typedef struct _cairo_dest_attrs {
     cairo_bool_t internal;
 } cairo_dest_attrs_t;
 
+typedef struct _cairo_ccitt_params {
+    int columns;
+    int rows;
+    int k;
+    cairo_bool_t end_of_line;
+    cairo_bool_t encoded_byte_align;
+    cairo_bool_t end_of_block;
+    cairo_bool_t black_is_1;
+    int damaged_rows_before_error;
+} cairo_ccitt_params_t;
+
+
 cairo_private cairo_int_status_t
 _cairo_tag_parse_link_attributes (const char *attributes, cairo_link_attrs_t *link_attrs);
 
 cairo_private cairo_int_status_t
 _cairo_tag_parse_dest_attributes (const char *attributes, cairo_dest_attrs_t *dest_attrs);
 
+cairo_private cairo_int_status_t
+_cairo_tag_parse_ccitt_params (const char *attributes, cairo_ccitt_params_t *dest_attrs);
+
 #endif /* CAIRO_TAG_ATTRIBUTES_PRIVATE_H */