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get_bits: check the number of bits parameter through av_assert2()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-07 16:04:09 +02:00
parent 20676711fe
commit 6560fa390e
1 changed files with 4 additions and 0 deletions
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4
libavcodec/get_bits.h
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@ -30,6 +30,7 @@
#include "libavutil/common.h" #include "libavutil/common.h"
#include "libavutil/intreadwrite.h" #include "libavutil/intreadwrite.h"
#include "libavutil/log.h" #include "libavutil/log.h"
#include "libavutil/avassert.h"
#include "mathops.h" #include "mathops.h"
/* /*
@ -222,6 +223,7 @@ static inline int get_sbits(GetBitContext *s, int n)
{ {
register int tmp; register int tmp;
OPEN_READER(re, s); OPEN_READER(re, s);
av_assert2(n>0 && n<=25);
UPDATE_CACHE(re, s); UPDATE_CACHE(re, s);
tmp = SHOW_SBITS(re, s, n); tmp = SHOW_SBITS(re, s, n);
LAST_SKIP_BITS(re, s, n); LAST_SKIP_BITS(re, s, n);
@ -236,6 +238,7 @@ static inline unsigned int get_bits(GetBitContext *s, int n)
{ {
register int tmp; register int tmp;
OPEN_READER(re, s); OPEN_READER(re, s);
av_assert2(n>0 && n<=25);
UPDATE_CACHE(re, s); UPDATE_CACHE(re, s);
tmp = SHOW_UBITS(re, s, n); tmp = SHOW_UBITS(re, s, n);
LAST_SKIP_BITS(re, s, n); LAST_SKIP_BITS(re, s, n);
@ -250,6 +253,7 @@ static inline unsigned int show_bits(GetBitContext *s, int n)
{ {
register int tmp; register int tmp;
OPEN_READER(re, s); OPEN_READER(re, s);
av_assert2(n>0 && n<=25);
UPDATE_CACHE(re, s); UPDATE_CACHE(re, s);
tmp = SHOW_UBITS(re, s, n); tmp = SHOW_UBITS(re, s, n);
return tmp; return tmp;