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| author | DRC <dcommander@users.sourceforge.net> | 2011-03-04 03:20:34 +0000 |
|---|---|---|
| committer | DRC <dcommander@users.sourceforge.net> | 2011-03-04 03:20:34 +0000 |
| commit | ba5ea5143e48b71234414139e3b4cb244599e875 (patch) | |
| tree | b024a941311e884fc703fc69ec7607fd32f94411 /transupp.c | |
| parent | f2cef492b141e085841acbfd89a98c2eb782781f (diff) | |
| download | libjpeg-turbo-ba5ea5143e48b71234414139e3b4cb244599e875.tar.gz | |
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
Diffstat (limited to 'transupp.c')
| -rw-r--r-- | transupp.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1022,7 +1022,7 @@ jtransform_request_workspace (j_decompress_ptr srcinfo, case JXFORM_FLIP_H: if (info->trim) trim_right_edge(info, srcinfo->output_width); - if (info->y_crop_offset != 0) + if (info->y_crop_offset != 0 || info->slow_hflip) need_workspace = TRUE; /* do_flip_h_no_crop doesn't need a workspace array */ break; @@ -1448,7 +1448,7 @@ jtransform_execute_transform (j_decompress_ptr srcinfo, src_coef_arrays, dst_coef_arrays); break; case JXFORM_FLIP_H: - if (info->y_crop_offset != 0) + if (info->y_crop_offset != 0 || info->slow_hflip) do_flip_h(srcinfo, dstinfo, info->x_crop_offset, info->y_crop_offset, src_coef_arrays, dst_coef_arrays); else |