Tile generation did not work with TJXFORM_HFLIP, because the underlying transform code was using an in-place algorithm, which modified the source coefficients after the first tile was generated. Thus, create a new option which allows TurboJPEG to turn off the in-place horizontal flip if there are multiple transforms being performed from the same set of coefficients.

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@495 632fc199-4ca6-4c93-a231-07263d6284db

1 files changed, 1 insertions, 0 deletions

diff --git a/jpegtran.c b/jpegtran.c
index 73dbe530..f861464b 100644
--- a/jpegtran.c
+++ b/jpegtran.c
@@ -142,6 +142,7 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
   transformoption.trim = FALSE;
   transformoption.force_grayscale = FALSE;
   transformoption.crop = FALSE;
+  transformoption.slow_hflip = FALSE;
   cinfo->err->trace_level = 0;
 
   /* Scan command line options, adjust parameters */