diff options
author | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-20 13:37:11 +0000 |
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committer | russell <russell@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-05-20 13:37:11 +0000 |
commit | e92fd1991763436e32eb2ab5642eba6bfc51d185 (patch) | |
tree | 2c14f6bf54ccea719ac4b6cce89ff8633f3ac5fd /codecs/codec_alaw.c | |
parent | 27c5f21d71c3a6b55066375583d18b00dd69fffb (diff) |
add some code optimizations, see the report for an explanation
(issue #7105, Mithraen)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@29018 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'codecs/codec_alaw.c')
-rw-r--r-- | codecs/codec_alaw.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/codecs/codec_alaw.c b/codecs/codec_alaw.c index 8ca185f75..1e99ac9ee 100644 --- a/codecs/codec_alaw.c +++ b/codecs/codec_alaw.c @@ -54,30 +54,30 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$") /*! \brief decode frame into lin and fill output buffer. */ static int alawtolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f) { - int i; + int i = f->samples; unsigned char *src = f->data; - int16_t *dst = (int16_t *)pvt->outbuf; + int16_t *dst = (int16_t *)pvt->outbuf + pvt->samples; int in_samples = f->samples; - int out_samples = pvt->samples; - for (i = 0; i < in_samples; i++) - dst[out_samples++] = AST_ALAW(src[i]); + while (i--) + *dst++ = AST_ALAW(*src++); - pvt->samples = out_samples; - pvt->datalen += in_samples * 2; /* 2 bytes/sample */ + pvt->samples += f->samples; + pvt->datalen += f->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 i; + int i = f->samples; char *dst = pvt->outbuf + pvt->samples; int16_t *src = f->data; int in_samples = f->samples; - for (i = 0; i < in_samples; i++) - *dst++ = AST_LIN2A(src[i]); + while (i--) + *dst++ = AST_LIN2A(*src++); + pvt->samples += in_samples; pvt->datalen += in_samples; /* 1 byte/sample */ return 0; |