static void mel_loglookup_with_offset(front_cep *cepobj,
front_channel *channel)
/*
** pwr spect -> filter bank output */
{
int ii;
if (channel->shift > 0)
for (ii = 0; ii < channel->num_freq; ii++)
{
channel->filterbank[ii] = (cepdata) log_lookup(&cepobj->logtab,
(int)(channel->filterbank[ii] +
SHIFT_DOWN(cepobj->mel_offset[ii], channel->shift)),
channel->shift);
}
else
for (ii = 0; ii < channel->num_freq; ii++)
{
channel->filterbank[ii] = (cepdata) log_lookup(&cepobj->logtab,
(int)(channel->filterbank[ii] +
SHIFT_UP(cepobj->mel_offset[ii], -channel->shift)),
channel->shift);
}
return;
}
int
log_writei(struct inode *ip, char *src, uint off, uint n)
{
uint tot, m, i, j;
struct buf *tbp;
if(ip->type == T_DEV){
if(ip->major < 0 || ip->major >= NDEV || !devsw[ip->major].write)
return -1;
return devsw[ip->major].write(ip, src, n);
}
if(off + n < off)
return -1;
if(off + n > MAXFILE*BSIZE)
n = MAXFILE*BSIZE - off;
b_index = 0; // new xfer, start keeping track of open bufs
/* allocate all space needed */
for(i=0, j=off; i<n; i+=m, j+=m){
log_bmap(ip, j/BSIZE);
m = min(n - i, BSIZE - j%BSIZE);
}
for(tot=0; tot<n; tot+=m, off+=m, src+=m){
bp[b_index] = bread(ip->dev, log_lookup(ip, off/BSIZE));
m = min(n - tot, BSIZE - off%BSIZE);
memmove(bp[b_index]->data + off%BSIZE, src, m);
b_index++;
}
if(n > 0 && off > ip->size){
ip->size = off;
log_iupdate(ip);
}
log_start();
for(i = 0; i < b_index; i++){
bwrite(bp[i]);
brelse(bp[i]);
}
log_end();
return n;
}
