* crossconnections and conferences via software if not possible through
* hardware. If hardware capability is available, hardware is used.
*
- * Echo: Is generated by CMX and is used to check performane of hard and
+ * Echo: Is generated by CMX and is used to check performance of hard and
* software CMX.
*
* The CMX has special functions for conferences with one, two and more
*/
#include <linux/delay.h>
+#include <linux/gfp.h>
#include <linux/mISDNif.h>
#include <linux/mISDNdsp.h>
#include <linux/module.h>
struct mISDN_ctrl_req cq;
int rx_off = 1;
+ memset(&cq, 0, sizeof(cq));
+
if (!dsp->features_rx_off)
return;
else if (dsp->dtmf.software)
rx_off = 0;
/* echo in software */
- else if (dsp->echo && dsp->pcm_slot_tx < 0)
+ else if (dsp->echo.software)
rx_off = 0;
/* bridge in software */
- else if (dsp->conf) {
- if (dsp->conf->software)
- rx_off = 0;
- }
+ else if (dsp->conf && dsp->conf->software)
+ rx_off = 0;
+ /* data is not required by user space and not required
+ * for echo dtmf detection, soft-echo, soft-bridging */
if (rx_off == dsp->rx_is_off)
return;
}
}
+/* enable "fill empty" feature */
+static void
+dsp_fill_empty(struct dsp *dsp)
+{
+ struct mISDN_ctrl_req cq;
+
+ memset(&cq, 0, sizeof(cq));
+
+ if (!dsp->ch.peer) {
+ if (dsp_debug & DEBUG_DSP_CORE)
+ printk(KERN_DEBUG "%s: no peer, no fill_empty\n",
+ __func__);
+ return;
+ }
+ cq.op = MISDN_CTRL_FILL_EMPTY;
+ cq.p1 = 1;
+ if (dsp->ch.peer->ctrl(dsp->ch.peer, CONTROL_CHANNEL, &cq)) {
+ printk(KERN_DEBUG "%s: CONTROL_CHANNEL failed\n",
+ __func__);
+ return;
+ }
+ if (dsp_debug & DEBUG_DSP_CORE)
+ printk(KERN_DEBUG "%s: %s set fill_empty = 1\n",
+ __func__, dsp->name);
+}
+
static int
dsp_control_req(struct dsp *dsp, struct mISDNhead *hh, struct sk_buff *skb)
{
- struct sk_buff *nskb;
+ struct sk_buff *nskb;
int ret = 0;
int cont;
u8 *data;
if (dsp_debug & DEBUG_DSP_CORE)
printk(KERN_DEBUG "%s: start dtmf\n", __func__);
if (len == sizeof(int)) {
- printk(KERN_NOTICE "changing DTMF Threshold "
- "to %d\n", *((int *)data));
+ if (dsp_debug & DEBUG_DSP_CORE)
+ printk(KERN_NOTICE "changing DTMF Threshold "
+ "to %d\n", *((int *)data));
dsp->dtmf.treshold = (*(int *)data) * 10000;
}
+ dsp->dtmf.enable = 1;
/* init goertzel */
dsp_dtmf_goertzel_init(dsp);
/* check dtmf hardware */
dsp_dtmf_hardware(dsp);
+ dsp_rx_off(dsp);
break;
case DTMF_TONE_STOP: /* turn off DTMF */
if (dsp_debug & DEBUG_DSP_CORE)
printk(KERN_DEBUG "%s: stop dtmf\n", __func__);
+ dsp->dtmf.enable = 0;
dsp->dtmf.hardware = 0;
dsp->dtmf.software = 0;
break;
dsp_rx_off(dsp);
break;
case DSP_ECHO_ON: /* enable echo */
- dsp->echo = 1; /* soft echo */
+ dsp->echo.software = 1; /* soft echo */
if (dsp_debug & DEBUG_DSP_CORE)
printk(KERN_DEBUG "%s: enable cmx-echo\n", __func__);
dsp_cmx_hardware(dsp->conf, dsp);
dsp_cmx_debug(dsp);
break;
case DSP_ECHO_OFF: /* disable echo */
- dsp->echo = 0;
+ dsp->echo.software = 0;
+ dsp->echo.hardware = 0;
if (dsp_debug & DEBUG_DSP_CORE)
printk(KERN_DEBUG "%s: disable cmx-echo\n", __func__);
dsp_cmx_hardware(dsp->conf, dsp);
break;
}
dsp->cmx_delay = (*((int *)data)) << 3;
- /* miliseconds to samples */
+ /* milliseconds to samples */
if (dsp->cmx_delay >= (CMX_BUFF_HALF>>1))
/* clip to half of maximum usable buffer
(half of half buffer) */
dsp->pipeline.inuse = 1;
dsp_cmx_hardware(dsp->conf, dsp);
ret = dsp_pipeline_build(&dsp->pipeline,
- len > 0 ? (char *)data : NULL);
+ len > 0 ? data : NULL);
dsp_cmx_hardware(dsp->conf, dsp);
dsp_rx_off(dsp);
}
struct dsp *dsp = container_of(ch, struct dsp, ch);
struct mISDN_ctrl_req cq;
- if (dsp_options & DSP_OPT_NOHARDWARE)
- return;
if (!ch->peer) {
if (dsp_debug & DEBUG_DSP_CORE)
printk(KERN_DEBUG "%s: no peer, no features\n",
}
if (cq.op & MISDN_CTRL_RX_OFF)
dsp->features_rx_off = 1;
+ if (cq.op & MISDN_CTRL_FILL_EMPTY)
+ dsp->features_fill_empty = 1;
+ if (dsp_options & DSP_OPT_NOHARDWARE)
+ return;
if ((cq.op & MISDN_CTRL_HW_FEATURES_OP)) {
cq.op = MISDN_CTRL_HW_FEATURES;
*((u_long *)&cq.p1) = (u_long)&dsp->features;
static int
dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
{
- struct dsp *dsp = container_of(ch, struct dsp, ch);
+ struct dsp *dsp = container_of(ch, struct dsp, ch);
struct mISDNhead *hh;
int ret = 0;
- u8 *digits;
- int cont;
- struct sk_buff *nskb;
+ u8 *digits = NULL;
u_long flags;
hh = mISDN_HEAD_P(skb);
break;
}
+ spin_lock_irqsave(&dsp_lock, flags);
+
/* decrypt if enabled */
if (dsp->bf_enable)
dsp_bf_decrypt(dsp, skb->data, skb->len);
/* pipeline */
if (dsp->pipeline.inuse)
dsp_pipeline_process_rx(&dsp->pipeline, skb->data,
- skb->len);
+ skb->len, hh->id);
/* change volume if requested */
if (dsp->rx_volume)
dsp_change_volume(skb, dsp->rx_volume);
-
/* check if dtmf soft decoding is turned on */
if (dsp->dtmf.software) {
digits = dsp_dtmf_goertzel_decode(dsp, skb->data,
- skb->len, (dsp_options&DSP_OPT_ULAW)?1:0);
+ skb->len, (dsp_options&DSP_OPT_ULAW) ? 1 : 0);
+ }
+ /* we need to process receive data if software */
+ if (dsp->conf && dsp->conf->software) {
+ /* process data from card at cmx */
+ dsp_cmx_receive(dsp, skb);
+ }
+
+ spin_unlock_irqrestore(&dsp_lock, flags);
+
+ /* send dtmf result, if any */
+ if (digits) {
while (*digits) {
+ int k;
+ struct sk_buff *nskb;
if (dsp_debug & DEBUG_DSP_DTMF)
printk(KERN_DEBUG "%s: digit"
"(%c) to layer %s\n",
__func__, *digits, dsp->name);
- cont = DTMF_TONE_VAL | *digits;
+ k = *digits | DTMF_TONE_VAL;
nskb = _alloc_mISDN_skb(PH_CONTROL_IND,
- MISDN_ID_ANY, sizeof(int), &cont,
- GFP_ATOMIC);
+ MISDN_ID_ANY, sizeof(int), &k,
+ GFP_ATOMIC);
if (nskb) {
if (dsp->up) {
if (dsp->up->send(
dsp->up, nskb))
- dev_kfree_skb(nskb);
+ dev_kfree_skb(nskb);
} else
dev_kfree_skb(nskb);
}
digits++;
}
}
- /* we need to process receive data if software */
- spin_lock_irqsave(&dsp_lock, flags);
- if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) {
- /* process data from card at cmx */
- dsp_cmx_receive(dsp, skb);
- }
- spin_unlock_irqrestore(&dsp_lock, flags);
-
if (dsp->rx_disabled) {
/* if receive is not allowed */
break;
if (dsp->up) {
if (dsp->up->send(
dsp->up, nskb))
- dev_kfree_skb(nskb);
+ dev_kfree_skb(nskb);
} else
dev_kfree_skb(nskb);
}
}
if (dsp->hdlc) {
/* hdlc */
- spin_lock_irqsave(&dsp_lock, flags);
- if (dsp->b_active) {
- skb_queue_tail(&dsp->sendq, skb);
- schedule_work(&dsp->workq);
+ if (!dsp->b_active) {
+ ret = -EIO;
+ break;
}
+ hh->prim = PH_DATA_REQ;
+ spin_lock_irqsave(&dsp_lock, flags);
+ skb_queue_tail(&dsp->sendq, skb);
+ schedule_work(&dsp->workq);
spin_unlock_irqrestore(&dsp_lock, flags);
return 0;
}
if (dsp->dtmf.hardware || dsp->dtmf.software)
dsp_dtmf_goertzel_init(dsp);
get_features(ch);
+ /* enable fill_empty feature */
+ if (dsp->features_fill_empty)
+ dsp_fill_empty(dsp);
/* send ph_activate */
hh->prim = PH_ACTIVATE_REQ;
if (ch->peer)
int err = 0;
if (debug & DEBUG_DSP_CTRL)
- printk(KERN_DEBUG "%s:(%x)\n", __func__, cmd);
+ printk(KERN_DEBUG "%s:(%x)\n", __func__, cmd);
switch (cmd) {
case OPEN_CHANNEL:
.create = dspcreate
};
-static int dsp_init(void)
+static int __init dsp_init(void)
{
int err;
int tics;
} else {
poll = 8;
while (poll <= MAX_POLL) {
- tics = poll * HZ / 8000;
+ tics = (poll * HZ) / 8000;
if (tics * 8000 == poll * HZ) {
dsp_tics = tics;
dsp_poll = poll;
/* init conversion tables */
dsp_audio_generate_law_tables();
- dsp_silence = (dsp_options&DSP_OPT_ULAW)?0xff:0x2a;
- dsp_audio_law_to_s32 = (dsp_options&DSP_OPT_ULAW)?dsp_audio_ulaw_to_s32:
- dsp_audio_alaw_to_s32;
+ dsp_silence = (dsp_options&DSP_OPT_ULAW) ? 0xff : 0x2a;
+ dsp_audio_law_to_s32 = (dsp_options&DSP_OPT_ULAW) ?
+ dsp_audio_ulaw_to_s32 : dsp_audio_alaw_to_s32;
dsp_audio_generate_s2law_table();
dsp_audio_generate_seven();
dsp_audio_generate_mix_table();
}
-static void dsp_cleanup(void)
+static void __exit dsp_cleanup(void)
{
mISDN_unregister_Bprotocol(&DSP);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff