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truemotion1: Check index, fix out of array read

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit fd4c1c0b70)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-30 16:19:36 +02:00
parent c761e144f6
commit 688da036b1
1 changed files with 16 additions and 0 deletions
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16
libavcodec/truemotion1.c
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@ -520,6 +520,10 @@ hres,vres,i,i%vres (0 < i < 4)
}
#define APPLY_C_PREDICTOR() \
if(index > 1023){\
av_log(s->avctx, AV_LOG_ERROR, " index %d went out of bounds\n", index); \
return; \
}\
predictor_pair = s->c_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
@ -537,6 +541,10 @@ hres,vres,i,i%vres (0 < i < 4)
index++;
#define APPLY_C_PREDICTOR_24() \
if(index > 1023){\
av_log(s->avctx, AV_LOG_ERROR, " index %d went out of bounds\n", index); \
return; \
}\
predictor_pair = s->c_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
@ -555,6 +563,10 @@ hres,vres,i,i%vres (0 < i < 4)
#define APPLY_Y_PREDICTOR() \
if(index > 1023){\
av_log(s->avctx, AV_LOG_ERROR, " index %d went out of bounds\n", index); \
return; \
}\
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
@ -572,6 +584,10 @@ hres,vres,i,i%vres (0 < i < 4)
index++;
#define APPLY_Y_PREDICTOR_24() \
if(index > 1023){\
av_log(s->avctx, AV_LOG_ERROR, " index %d went out of bounds\n", index); \
return; \
}\
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \