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author | Frank Warmerdam <warmerdam@pobox.com> | 2012-05-24 05:25:14 +0000 |
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committer | Frank Warmerdam <warmerdam@pobox.com> | 2012-05-24 05:25:14 +0000 |
commit | c6d8cdcf298accba15a0b5b0aad16fd726fb68c8 (patch) | |
tree | 863e03d45b84dce8e2fd9ea86d1a51a55bdf6111 /libtiff/tif_pixarlog.c | |
parent | 920688aac54868d9b1907ffca564c3a3b950c35d (diff) | |
download | libtiff-git-c6d8cdcf298accba15a0b5b0aad16fd726fb68c8.tar.gz |
avoid accessing out of the lookup arrays for out of range inputs.
Diffstat (limited to 'libtiff/tif_pixarlog.c')
-rw-r--r-- | libtiff/tif_pixarlog.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/libtiff/tif_pixarlog.c b/libtiff/tif_pixarlog.c index d8123e8d..7a21e699 100644 --- a/libtiff/tif_pixarlog.c +++ b/libtiff/tif_pixarlog.c @@ -1,4 +1,4 @@ -/* $Id: tif_pixarlog.c,v 1.35 2011-01-06 16:00:23 fwarmerdam Exp $ */ +/* $Id: tif_pixarlog.c,v 1.36 2012-05-24 05:25:14 fwarmerdam Exp $ */ /* * Copyright (c) 1996-1997 Sam Leffler @@ -120,9 +120,9 @@ horizontalAccumulateF(uint16 *wp, int n, int stride, float *op, if (n >= stride) { mask = CODE_MASK; if (stride == 3) { - t0 = ToLinearF[cr = wp[0]]; - t1 = ToLinearF[cg = wp[1]]; - t2 = ToLinearF[cb = wp[2]]; + t0 = ToLinearF[cr = (wp[0] & mask)]; + t1 = ToLinearF[cg = (wp[1] & mask)]; + t2 = ToLinearF[cb = (wp[2] & mask)]; op[0] = t0; op[1] = t1; op[2] = t2; @@ -139,10 +139,10 @@ horizontalAccumulateF(uint16 *wp, int n, int stride, float *op, op[2] = t2; } } else if (stride == 4) { - t0 = ToLinearF[cr = wp[0]]; - t1 = ToLinearF[cg = wp[1]]; - t2 = ToLinearF[cb = wp[2]]; - t3 = ToLinearF[ca = wp[3]]; + t0 = ToLinearF[cr = (wp[0] & mask)]; + t1 = ToLinearF[cg = (wp[1] & mask)]; + t2 = ToLinearF[cb = (wp[2] & mask)]; + t3 = ToLinearF[ca = (wp[3] & mask)]; op[0] = t0; op[1] = t1; op[2] = t2; @@ -186,9 +186,9 @@ horizontalAccumulate12(uint16 *wp, int n, int stride, int16 *op, if (n >= stride) { mask = CODE_MASK; if (stride == 3) { - t0 = ToLinearF[cr = wp[0]] * SCALE12; - t1 = ToLinearF[cg = wp[1]] * SCALE12; - t2 = ToLinearF[cb = wp[2]] * SCALE12; + t0 = ToLinearF[cr = (wp[0] & mask)] * SCALE12; + t1 = ToLinearF[cg = (wp[1] & mask)] * SCALE12; + t2 = ToLinearF[cb = (wp[2] & mask)] * SCALE12; op[0] = CLAMP12(t0); op[1] = CLAMP12(t1); op[2] = CLAMP12(t2); @@ -205,10 +205,10 @@ horizontalAccumulate12(uint16 *wp, int n, int stride, int16 *op, op[2] = CLAMP12(t2); } } else if (stride == 4) { - t0 = ToLinearF[cr = wp[0]] * SCALE12; - t1 = ToLinearF[cg = wp[1]] * SCALE12; - t2 = ToLinearF[cb = wp[2]] * SCALE12; - t3 = ToLinearF[ca = wp[3]] * SCALE12; + t0 = ToLinearF[cr = (wp[0] & mask)] * SCALE12; + t1 = ToLinearF[cg = (wp[1] & mask)] * SCALE12; + t2 = ToLinearF[cb = (wp[2] & mask)] * SCALE12; + t3 = ToLinearF[ca = (wp[3] & mask)] * SCALE12; op[0] = CLAMP12(t0); op[1] = CLAMP12(t1); op[2] = CLAMP12(t2); @@ -250,9 +250,9 @@ horizontalAccumulate16(uint16 *wp, int n, int stride, uint16 *op, if (n >= stride) { mask = CODE_MASK; if (stride == 3) { - op[0] = ToLinear16[cr = wp[0]]; - op[1] = ToLinear16[cg = wp[1]]; - op[2] = ToLinear16[cb = wp[2]]; + op[0] = ToLinear16[cr = (wp[0] & mask)]; + op[1] = ToLinear16[cg = (wp[1] & mask)]; + op[2] = ToLinear16[cb = (wp[2] & mask)]; n -= 3; while (n > 0) { wp += 3; @@ -263,10 +263,10 @@ horizontalAccumulate16(uint16 *wp, int n, int stride, uint16 *op, op[2] = ToLinear16[(cb += wp[2]) & mask]; } } else if (stride == 4) { - op[0] = ToLinear16[cr = wp[0]]; - op[1] = ToLinear16[cg = wp[1]]; - op[2] = ToLinear16[cb = wp[2]]; - op[3] = ToLinear16[ca = wp[3]]; + op[0] = ToLinear16[cr = (wp[0] & mask)]; + op[1] = ToLinear16[cg = (wp[1] & mask)]; + op[2] = ToLinear16[cb = (wp[2] & mask)]; + op[3] = ToLinear16[ca = (wp[3] & mask)]; n -= 4; while (n > 0) { wp += 4; @@ -345,9 +345,9 @@ horizontalAccumulate8(uint16 *wp, int n, int stride, unsigned char *op, if (n >= stride) { mask = CODE_MASK; if (stride == 3) { - op[0] = ToLinear8[cr = wp[0]]; - op[1] = ToLinear8[cg = wp[1]]; - op[2] = ToLinear8[cb = wp[2]]; + op[0] = ToLinear8[cr = (wp[0] & mask)]; + op[1] = ToLinear8[cg = (wp[1] & mask)]; + op[2] = ToLinear8[cb = (wp[2] & mask)]; n -= 3; while (n > 0) { n -= 3; @@ -358,10 +358,10 @@ horizontalAccumulate8(uint16 *wp, int n, int stride, unsigned char *op, op[2] = ToLinear8[(cb += wp[2]) & mask]; } } else if (stride == 4) { - op[0] = ToLinear8[cr = wp[0]]; - op[1] = ToLinear8[cg = wp[1]]; - op[2] = ToLinear8[cb = wp[2]]; - op[3] = ToLinear8[ca = wp[3]]; + op[0] = ToLinear8[cr = (wp[0] & mask)]; + op[1] = ToLinear8[cg = (wp[1] & mask)]; + op[2] = ToLinear8[cb = (wp[2] & mask)]; + op[3] = ToLinear8[ca = (wp[3] & mask)]; n -= 4; while (n > 0) { n -= 4; @@ -396,9 +396,9 @@ horizontalAccumulate8abgr(uint16 *wp, int n, int stride, unsigned char *op, mask = CODE_MASK; if (stride == 3) { op[0] = 0; - t1 = ToLinear8[cb = wp[2]]; - t2 = ToLinear8[cg = wp[1]]; - t3 = ToLinear8[cr = wp[0]]; + t1 = ToLinear8[cb = (wp[2] & mask)]; + t2 = ToLinear8[cg = (wp[1] & mask)]; + t3 = ToLinear8[cr = (wp[0] & mask)]; op[1] = t1; op[2] = t2; op[3] = t3; @@ -416,10 +416,10 @@ horizontalAccumulate8abgr(uint16 *wp, int n, int stride, unsigned char *op, op[3] = t3; } } else if (stride == 4) { - t0 = ToLinear8[ca = wp[3]]; - t1 = ToLinear8[cb = wp[2]]; - t2 = ToLinear8[cg = wp[1]]; - t3 = ToLinear8[cr = wp[0]]; + t0 = ToLinear8[ca = (wp[3] & mask)]; + t1 = ToLinear8[cb = (wp[2] & mask)]; + t2 = ToLinear8[cg = (wp[1] & mask)]; + t3 = ToLinear8[cr = (wp[0] & mask)]; op[0] = t0; op[1] = t1; op[2] = t2; |