diff options
author | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-05 21:36:17 +0000 |
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committer | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-05 21:36:17 +0000 |
commit | f2fd8957f8df247595d24f1567716e039163bae3 (patch) | |
tree | c3163ccca5d99ddb0dee9a2d0031b19a68a91594 /codecs/codec_alaw.c | |
parent | be0d2ed294a108888ee91c62b5eb50829587683c (diff) |
minor code optimizations to reduce the number of times that the ast_frame
and ast_trans_pvt pointers have to be dereferenced (issue #7069, Mithraen)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@25059 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'codecs/codec_alaw.c')
-rw-r--r-- | codecs/codec_alaw.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/codecs/codec_alaw.c b/codecs/codec_alaw.c index d654e21e4..8ca185f75 100644 --- a/codecs/codec_alaw.c +++ b/codecs/codec_alaw.c @@ -57,25 +57,29 @@ static int alawtolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f) int i; unsigned char *src = f->data; int16_t *dst = (int16_t *)pvt->outbuf; - - for ( i = 0; i < f->samples; i++) - dst[pvt->samples + i] = AST_ALAW(src[i]); - pvt->samples += f->samples; - pvt->datalen += 2*f->samples; /* 2 bytes/sample */ + int in_samples = f->samples; + int out_samples = pvt->samples; + + for (i = 0; i < in_samples; i++) + dst[out_samples++] = AST_ALAW(src[i]); + + pvt->samples = out_samples; + pvt->datalen += in_samples * 2; /* 2 bytes/sample */ return 0; } /*! \brief convert and store input samples in output buffer */ static int lintoalaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f) { - int x; + int i; char *dst = pvt->outbuf + pvt->samples; int16_t *src = f->data; + int in_samples = f->samples; - for ( x = 0; x < f->samples; x++) - *dst++ = AST_LIN2A(src[x]); - pvt->samples += f->samples; - pvt->datalen += f->samples; /* 1 byte/sample */ + for (i = 0; i < in_samples; i++) + *dst++ = AST_LIN2A(src[i]); + pvt->samples += in_samples; + pvt->datalen += in_samples; /* 1 byte/sample */ return 0; } |