adpcm: use av_clip() in adpcm_ima_expand_nibble().

13 years ago · 89f3aa8ce2
parent 689be85a9a
commit 89f3aa8ce2
1 changed files with 1 additions and 2 deletions
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@ -150,8 +150,7 @@ static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble,

    step = ff_adpcm_step_table[c->step_index];
    step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
-    if (step_index < 0) step_index = 0;
-    else if (step_index > 88) step_index = 88;
+    step_index = av_clip(step_index, 0, 88);

    sign = nibble & 8;
    delta = nibble & 7;