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authorJUN FANG <jun_fang@foxitsoftware.com>2015-02-27 10:00:00 -0800
committerJUN FANG <jun_fang@foxitsoftware.com>2015-02-27 10:00:00 -0800
commitec61a859344dc6d2a60e4cbcd1555e6d317f2add (patch)
treeaefdff9a82c0b205573c54e899bf582022ac54a6 /core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c
parent42a8adad1c53c060bb93457902243a53270cec36 (diff)
downloadpdfium-ec61a859344dc6d2a60e4cbcd1555e6d317f2add.tar.xz
Upgrade openjpeg to revision 2997.
BUG=457493 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/960183004
Diffstat (limited to 'core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c')
-rw-r--r--core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c b/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c
index 65ff6263e0..393a1e5540 100644
--- a/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c
+++ b/core/src/fxcodec/fx_libopenjpeg/libopenjpeg20/pi.c
@@ -693,6 +693,9 @@ void opj_get_all_encoding_parameters( const opj_image_t *p_image,
/* position in x and y of tile*/
OPJ_UINT32 p, q;
+ /* non-corrected (in regard to image offset) tile offset */
+ OPJ_UINT32 l_tx0, l_ty0;
+
/* preconditions in debug*/
assert(p_cp != 00);
assert(p_image != 00);
@@ -708,10 +711,12 @@ void opj_get_all_encoding_parameters( const opj_image_t *p_image,
q = tileno / p_cp->tw;
/* here calculation of tx0, tx1, ty0, ty1, maxprec, l_dx and l_dy */
- *p_tx0 = opj_int_max((OPJ_INT32)(p_cp->tx0 + p * p_cp->tdx), (OPJ_INT32)p_image->x0);
- *p_tx1 = opj_int_min((OPJ_INT32)(p_cp->tx0 + (p + 1) * p_cp->tdx), (OPJ_INT32)p_image->x1);
- *p_ty0 = opj_int_max((OPJ_INT32)(p_cp->ty0 + q * p_cp->tdy), (OPJ_INT32)p_image->y0);
- *p_ty1 = opj_int_min((OPJ_INT32)(p_cp->ty0 + (q + 1) * p_cp->tdy), (OPJ_INT32)p_image->y1);
+ l_tx0 = p_cp->tx0 + p * p_cp->tdx; /* can't be greater than p_image->x1 so won't overflow */
+ *p_tx0 = (OPJ_INT32)opj_uint_max(l_tx0, p_image->x0);
+ *p_tx1 = (OPJ_INT32)opj_uint_min(opj_uint_adds(l_tx0, p_cp->tdx), p_image->x1);
+ l_ty0 = p_cp->ty0 + q * p_cp->tdy; /* can't be greater than p_image->y1 so won't overflow */
+ *p_ty0 = (OPJ_INT32)opj_uint_max(l_ty0, p_image->y0);
+ *p_ty1 = (OPJ_INT32)opj_uint_min(opj_uint_adds(l_ty0, p_cp->tdy), p_image->y1);
/* max precision and resolution is 0 (can only grow)*/
*p_max_prec = 0;