X-Git-Url: https://git.sesse.net/?p=fjl;a=blobdiff_plain;f=driver.c;fp=driver.c;h=5b4545343ddcc4504a09b51d8dc27a4a225bd19c;hp=d5bec84f8db5101aa33d6010c2de831e8f85339a;hb=1dec09cef241dae5c5e93962d2ec96c444874bc8;hpb=165a5b18aeeaaa0f27ea63c8c0d0bcbe87bc5aaa

diff --git a/driver.c b/driver.c
index d5bec84..5b45453 100644
--- a/driver.c
+++ b/driver.c
@@ -181,6 +181,7 @@ void read_scan(struct byte_source* source, struct jpeg_image* image, huffman_tab
 						unsigned r = rs >> 4;
 						unsigned s = rs & 0xf;
 						i += r;
+						possibly_refill(&bits, s + DEHUF_TABLE_BITS);
 
 						if (rs == 0x00) {
 							/* end of block */
@@ -188,11 +189,9 @@ void read_scan(struct byte_source* source, struct jpeg_image* image, huffman_tab
 						}
 						if (rs == 0xf0) {
 							/* 16 zero coefficients */
-							possibly_refill(&bits, DEHUF_TABLE_BITS);
 							continue;
 						}
 
-						possibly_refill(&bits, s + DEHUF_TABLE_BITS);
 						coeff[unzigzag[i]] = extend(read_bits(&bits, s), s);
 					}