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minor code optimizations to reduce the number of times that the ast_frame

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and ast_trans_pvt pointers have to be dereferenced (issue #7069, Mithraen)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@25059 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2006-05-05 21:36:17 +00:00
parent 0794168428
commit 5f856ea997
3 changed files with 38 additions and 28 deletions
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22
codecs/codec_alaw.c
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@@ -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;
int in_samples = f->samples;
int out_samples = pvt->samples;
for (i = 0; i < in_samples; i++)
dst[out_samples++] = AST_ALAW(src[i]);
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 */
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;
}