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: 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

View File

@@ -55,28 +55,30 @@ static unsigned char a2mu[256];
/*! \brief convert frame data and store into the buffer */
static int alawtoulaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
{
int x;
int i;
int in_samples = f->samples;
unsigned char *src = f->data;
unsigned char *dst = (unsigned char *)pvt->outbuf + pvt->samples;
for ( x = 0 ; x < f->samples; x++)
dst[x] = a2mu[src[x]];
pvt->samples += f->samples;
pvt->datalen += f->datalen;
for (i = 0; i < in_samples; i++)
*dst++ = a2mu[*src++];
pvt->samples += in_samples;
pvt->datalen += in_samples;
return 0;
}
/*! \brief convert frame data and store into the buffer */
static int ulawtoalaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
{
int x;
int i;
int in_samples = f->samples;
unsigned char *src = f->data;
unsigned char *dst = (unsigned char *)pvt->outbuf + pvt->samples;
for ( x = 0 ; x < f->samples; x++)
dst[x] = mu2a[src[x]];
pvt->samples += f->samples;
pvt->datalen += f->datalen;
for (i = 0; i < in_samples; i++)
*dst++ = mu2a[*src++];
pvt->samples += in_samples;
pvt->datalen += in_samples;
return 0;
}