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Simplify checks, use that we know that cnt will not be < 0 

Originally committed as revision 7787 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2007-01-31 21:00:48 +00:00
parent 56f8647aaa
commit c0a8b87600
1 changed files with 3 additions and 3 deletions
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6
libavcodec/lzo.c
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@ -86,11 +86,11 @@ static inline int get_len(LZOContext *c, int x, int mask) {
static inline void copy(LZOContext *c, int cnt) {
register uint8_t *src = c->in;
register uint8_t *dst = c->out;
if (src + cnt > c->in_end || src + cnt < src) {
if (cnt > c->in_end - src) {
cnt = c->in_end - src;
c->error |= LZO_INPUT_DEPLETED;
}
if (dst + cnt > c->out_end || dst + cnt < dst) {
if (cnt > c->out_end - dst) {
cnt = c->out_end - dst;
c->error |= LZO_OUTPUT_FULL;
}
@ -121,7 +121,7 @@ static inline void copy_backptr(LZOContext *c, int back, int cnt) {
c->error |= LZO_INVALID_BACKPTR;
return;
}
if (dst + cnt > c->out_end || dst + cnt < dst) {
if (cnt > c->out_end - dst) {
cnt = c->out_end - dst;
c->error |= LZO_OUTPUT_FULL;
}