aboutsummaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/jbig.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/jbig.c b/src/jbig.c
index 37afb50..c3c501b 100644
--- a/src/jbig.c
+++ b/src/jbig.c
@@ -209,6 +209,17 @@ _procline(int line, char *a, char *b, char *c)
/* The encoder must be erroneous */
uint16_t cx = 0;
+ if (line > 0) {
+ cx += (_ret[_width_padded * (_height - line)] & 0x20) << 2;
+ cx += _ret[_width_padded * (_height - line)] & 0x40;
+ cx += (_ret[_width_padded * (_height - line)] & 0x80) >> 2;
+ }
+
+ if (line > 1) {
+ cx += (_ret[_width_padded * (_height - line + 1)] & 0x40) >> 4;
+ cx += (_ret[_width_padded * (_height - line + 1)] & 0x80) >> 6;
+ }
+
for (int i = 0; i < _width; i++) {
_decode(cx);