302 isdn_audio_get_bits(adpcm_state *s, unsigned char **in, int *len)  in isdn_audio_get_bits()  argument
304 	while (s->nleft < s->nbits) {  in isdn_audio_get_bits()
307 		s->word = (s->word << 8) | d;  in isdn_audio_get_bits()
308 		s->nleft += 8;  in isdn_audio_get_bits()
310 	s->nleft -= s->nbits;  in isdn_audio_get_bits()
311 	return (s->word >> s->nleft) & bitmask[s->nbits];  in isdn_audio_get_bits()
315 isdn_audio_put_bits(int data, int nbits, adpcm_state *s,  in isdn_audio_put_bits()  argument
318 	s->word = (s->word << nbits) | (data & bitmask[nbits]);  in isdn_audio_put_bits()
319 	s->nleft += nbits;  in isdn_audio_put_bits()
320 	while (s->nleft >= 8) {  in isdn_audio_put_bits()
321 		int d = (s->word >> (s->nleft - 8));  in isdn_audio_put_bits()
324 		s->nleft -= 8;  in isdn_audio_put_bits()
329 isdn_audio_adpcm_init(adpcm_state *s, int nbits)  in isdn_audio_adpcm_init()  argument
331 	if (!s)  in isdn_audio_adpcm_init()
332 		s = kmalloc(sizeof(adpcm_state), GFP_ATOMIC);  in isdn_audio_adpcm_init()
333 	if (s) {  in isdn_audio_adpcm_init()
334 		s->a = 0;  in isdn_audio_adpcm_init()
335 		s->d = 5;  in isdn_audio_adpcm_init()
336 		s->word = 0;  in isdn_audio_adpcm_init()
337 		s->nleft = 0;  in isdn_audio_adpcm_init()
338 		s->nbits = nbits;  in isdn_audio_adpcm_init()
340 	return s;  in isdn_audio_adpcm_init()
344 isdn_audio_dtmf_init(dtmf_state *s)  in isdn_audio_dtmf_init()  argument
346 	if (!s)  in isdn_audio_dtmf_init()
347 		s = kmalloc(sizeof(dtmf_state), GFP_ATOMIC);  in isdn_audio_dtmf_init()
348 	if (s) {  in isdn_audio_dtmf_init()
349 		s->idx = 0;  in isdn_audio_dtmf_init()
350 		s->last = ' ';  in isdn_audio_dtmf_init()
352 	return s;  in isdn_audio_dtmf_init()
361 isdn_audio_adpcm2xlaw(adpcm_state *s, int fmt, unsigned char *in,  in isdn_audio_adpcm2xlaw()  argument
364 	int a = s->a;  in isdn_audio_adpcm2xlaw()
365 	int d = s->d;  in isdn_audio_adpcm2xlaw()
366 	int nbits = s->nbits;  in isdn_audio_adpcm2xlaw()
370 		int e = isdn_audio_get_bits(s, &in, &len);  in isdn_audio_adpcm2xlaw()
390 	s->a = a;  in isdn_audio_adpcm2xlaw()
391 	s->d = d;  in isdn_audio_adpcm2xlaw()
396 isdn_audio_xlaw2adpcm(adpcm_state *s, int fmt, unsigned char *in,  in isdn_audio_xlaw2adpcm()  argument
399 	int a = s->a;  in isdn_audio_xlaw2adpcm()
400 	int d = s->d;  in isdn_audio_xlaw2adpcm()
401 	int nbits = s->nbits;  in isdn_audio_xlaw2adpcm()
424 		isdn_audio_put_bits(e, nbits, s, &out, &olen);  in isdn_audio_xlaw2adpcm()
435 	s->a = a;  in isdn_audio_xlaw2adpcm()
436 	s->d = d;  in isdn_audio_xlaw2adpcm()
499 	dtmf_state *s;  in isdn_audio_eval_dtmf()  local
511 		s = info->dtmf_state;  in isdn_audio_eval_dtmf()
553 					if (s->last != ' ' && s->last != '.')  in isdn_audio_eval_dtmf()
554 						s->last = what;	/* min. 1 non-DTMF between DTMF */  in isdn_audio_eval_dtmf()
561 		if ((what != s->last) && (what != ' ') && (what != '.')) {  in isdn_audio_eval_dtmf()
579 		s->last = what;  in isdn_audio_eval_dtmf()
595 	dtmf_state *s = info->dtmf_state;  in isdn_audio_calc_dtmf()  local
600 		c = DTMF_NPOINTS - s->idx;  in isdn_audio_calc_dtmf()
607 				s->buf[s->idx++] =  in isdn_audio_calc_dtmf()
610 				s->buf[s->idx++] =  in isdn_audio_calc_dtmf()
613 		if (s->idx == DTMF_NPOINTS) {  in isdn_audio_calc_dtmf()
614 			isdn_audio_goertzel(s->buf, info);  in isdn_audio_calc_dtmf()
615 			s->idx = 0;  in isdn_audio_calc_dtmf()
622 isdn_audio_silence_init(silence_state *s)  in isdn_audio_silence_init()  argument
624 	if (!s)  in isdn_audio_silence_init()
625 		s = kmalloc(sizeof(silence_state), GFP_ATOMIC);  in isdn_audio_silence_init()
626 	if (s) {  in isdn_audio_silence_init()
627 		s->idx = 0;  in isdn_audio_silence_init()
628 		s->state = 0;  in isdn_audio_silence_init()
630 	return s;  in isdn_audio_silence_init()
636 	silence_state *s = info->silence_state;  in isdn_audio_calc_silence()  local
652 			s->idx = 0;  in isdn_audio_calc_silence()
653 			s->state = 1;  in isdn_audio_calc_silence()
655 			if (s->idx < 210000) s->idx++;  in isdn_audio_calc_silence()
693 	silence_state *s = info->silence_state;  in isdn_audio_eval_silence()  local
698 	if (s->idx > (info->emu.vpar[2] * 800)) {  in isdn_audio_eval_silence()
699 		s->idx = 0;  in isdn_audio_eval_silence()
700 		if (!s->state) {	/* silence from beginning of rec */  in isdn_audio_eval_silence()