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authorAndreas Eversberg <andreas@eversberg.eu>2009-05-22 15:04:46 +0400
committerDavid S. Miller <davem@davemloft.net>2009-05-25 11:51:31 +0400
commit7cfa153dd709f15188fe84b78ae76387841fe17b (patch)
tree35df67cef71397759e9fad76fb878fa439f26f45 /drivers/isdn/hardware/mISDN/hfcmulti.c
parenta5355c27d26001865a5ac32c868c82a523c275d3 (diff)
downloadlinux-7cfa153dd709f15188fe84b78ae76387841fe17b.tar.xz
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.c8
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;
}
}