diff options
| author | Andreas Eversberg <andreas@eversberg.eu> | 2009-05-22 11:04:46 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-25 00:51:31 -0700 |
| commit | 7cfa153dd709f15188fe84b78ae76387841fe17b (patch) | |
| tree | 35df67cef71397759e9fad76fb878fa439f26f45 /drivers/isdn/hardware/mISDN/hfcmulti.c | |
| parent | a5355c27d26001865a5ac32c868c82a523c275d3 (diff) | |
| download | lwn-7cfa153dd709f15188fe84b78ae76387841fe17b.tar.gz lwn-7cfa153dd709f15188fe84b78ae76387841fe17b.zip | |
mISDN: Echo canceler now gets delay information from hardware
Added tx-fifo information for calculation of current delay to sync tx and rx
streams for echo canceler.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hardware/mISDN/hfcmulti.c')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/hfcmulti.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c index ca153de6954e..3a7c26ce12cf 100644 --- a/drivers/isdn/hardware/mISDN/hfcmulti.c +++ b/drivers/isdn/hardware/mISDN/hfcmulti.c @@ -1945,6 +1945,9 @@ next_frame: "%d!=%d\n", __func__, hc->id + 1, temp, z2); z2 = temp; /* repeat unti Z2 is equal */ } + hc->chan[ch].Zfill = z1 - z2; + if (hc->chan[ch].Zfill < 0) + hc->chan[ch].Zfill += hc->Zlen; Zspace = z2 - z1; if (Zspace <= 0) Zspace += hc->Zlen; @@ -2031,6 +2034,7 @@ next_frame: /* Have to prep the audio data */ hc->write_fifo(hc, d, ii - i); + hc->chan[ch].Zfill += ii - i; *idxp = ii; /* if not all data has been written */ @@ -2226,7 +2230,7 @@ next_frame: if (dch) recv_Dchannel(dch); else - recv_Bchannel(bch); + recv_Bchannel(bch, MISDN_ID_ANY); *sp = skb; again++; goto next_frame; @@ -2258,7 +2262,7 @@ next_frame: "(z1=%04x, z2=%04x) TRANS\n", __func__, hc->id + 1, ch, Zsize, z1, z2); /* only bch is transparent */ - recv_Bchannel(bch); + recv_Bchannel(bch, hc->chan[ch].Zfill); *sp = skb; } } |