Reset scans to value expected by the TJ API

Fixes #260
2017-05-25 16:32:23 +01:00
parent 12909e6a0f
commit a9bfef2a57
1 changed files with 4 additions and 0 deletions
--- a/turbojpeg.c
+++ b/turbojpeg.c
@@ -2115,6 +2115,10 @@ DLLEXPORT int DLLCALL tjTransform(tjhandle handle,
 			&xinfo[i]);
 		if(!(t[i].options&TJXOPT_NOOUTPUT))
 		{
+#ifdef C_PROGRESSIVE_SUPPORTED
+			if (cinfo->num_scans != 0)     /* process -progressive; -scans can override */
+				jpeg_simple_progression(cinfo);
+#endif
 			jpeg_write_coefficients(cinfo, dstcoefs);
 			jcopy_markers_execute(dinfo, cinfo, JCOPYOPT_ALL);
 		}