isdn/mISDN/dsp_tones.c

232  * tone sequence definition *
236 	int tone;
359  * copy tone data *
365  * memcpy per function call, or two memcpy if the tone sequence changes.
373  * if tones has finished (e.g. knocking tone), dsp->tones is turned off
379 	struct dsp_tone *tone = &dsp->tone;
381 	/* if we have no tone, we copy silence */
382 	if (!tone->tone) {
388 	pat = (struct pattern *)tone->pattern;
390 	index = tone->index; /* gives current sequence index */
391 	count = tone->count; /* gives current sample */
402 			/* check if we are currently playing this tone */
425 	tone->index = index;
426 	tone->count = count;
462 	struct dsp *dsp = from_timer(dsp, t, tone.tl);
463 	struct dsp_tone *tone = &dsp->tone;
464 	struct pattern *pat = (struct pattern *)tone->pattern;
465 	int index = tone->index;
467 	if (!tone->tone)
473 	tone->index = index;
475 	/* set next tone */
481 	tone->tl.expires = jiffies + (pat->seq[index] * HZ) / 8000;
482 	add_timer(&tone->tl);
487  * set/release tone *
496 dsp_tone(struct dsp *dsp, int tone)
500 	struct dsp_tone *tonet = &dsp->tone;
505 	/* we turn off the tone */
506 	if (!tone) {
511 		tonet->tone = 0;
517 	while (pattern[i].tone) {
518 		if (pattern[i].tone == tone) {
525 		printk(KERN_WARNING "dsp: given tone 0x%x is invalid\n", tone);
529 		printk(KERN_DEBUG "%s: now starting tone %d (index=%d)\n",
530 		       __func__, tone, 0);
531 	tonet->tone = tone;
538 		/* set first tone */