Lines Matching refs:p_state
412 static void capidtmf_recv_init (t_capidtmf_state *p_state)
414 p_state->recv.min_gap_duration = 1;
415 p_state->recv.min_digit_duration = 1;
417 p_state->recv.cycle_counter = 0;
418 p_state->recv.current_digit_on_time = 0;
419 p_state->recv.current_digit_off_time = 0;
420 p_state->recv.current_digit_value = CAPIDTMF_RECV_NO_DIGIT;
422 p_state->recv.digit_write_pos = 0;
423 p_state->recv.digit_read_pos = 0;
424 p_state->recv.indication_state = 0;
425 p_state->recv.indication_state_ack = 0;
426 p_state->recv.state = CAPIDTMF_RECV_STATE_IDLE;
430 void capidtmf_recv_enable (t_capidtmf_state *p_state, word min_digit_duration, word min_gap_duration)
432 p_state->recv.indication_state_ack &= CAPIDTMF_RECV_INDICATION_DIGIT;
433 p_state->recv.min_digit_duration = (word)(((((dword) min_digit_duration) * 8) +
435 if (p_state->recv.min_digit_duration <= 1)
436 p_state->recv.min_digit_duration = 1;
438 (p_state->recv.min_digit_duration)--;
439 p_state->recv.min_gap_duration =
441 if (p_state->recv.min_gap_duration <= 1)
442 p_state->recv.min_gap_duration = 1;
444 (p_state->recv.min_gap_duration)--;
445 p_state->recv.state |= CAPIDTMF_RECV_STATE_DTMF_ACTIVE;
449 void capidtmf_recv_disable (t_capidtmf_state *p_state)
451 p_state->recv.state &= ~CAPIDTMF_RECV_STATE_DTMF_ACTIVE;
452 if (p_state->recv.state == CAPIDTMF_RECV_STATE_IDLE)
453 capidtmf_recv_init (p_state);
456 p_state->recv.cycle_counter = 0;
457 p_state->recv.current_digit_on_time = 0;
458 p_state->recv.current_digit_off_time = 0;
459 p_state->recv.current_digit_value = CAPIDTMF_RECV_NO_DIGIT;
464 word capidtmf_recv_indication (t_capidtmf_state *p_state, byte *buffer)
468 flags = p_state->recv.indication_state ^ p_state->recv.indication_state_ack;
469 p_state->recv.indication_state_ack ^= flags & CAPIDTMF_RECV_INDICATION_DIGIT;
470 if (p_state->recv.digit_write_pos != p_state->recv.digit_read_pos)
473 k = p_state->recv.digit_write_pos;
474 j = p_state->recv.digit_read_pos;
477 buffer[i++] = p_state->recv.digit_buffer[j];
480 p_state->recv.digit_read_pos = k;
483 p_state->recv.indication_state_ack ^= flags;
490 void capidtmf_recv_block (t_capidtmf_state *p_state, byte *buffer, word length)
502 if (p_state->recv.state & CAPIDTMF_RECV_STATE_DTMF_ACTIVE)
504 cycle_counter = p_state->recv.cycle_counter;
514 p_state->recv.goertzel_buffer[0][i] = 0;
515 p_state->recv.goertzel_buffer[1][i] = 0;
525 if (p_state->ulaw)
542 capidtmf_goertzel_loop (p_state->recv.goertzel_buffer[0],
549 capidtmf_goertzel_result (p_state->recv.goertzel_buffer[0],
553 lo = (dword)(p_state->recv.goertzel_buffer[0][i]);
554 hi = (dword)(p_state->recv.goertzel_buffer[1][i]);
612 if (p_state->recv.current_digit_on_time != 0)
614 if (++(p_state->recv.current_digit_off_time) >= p_state->recv.min_gap_duration)
616 p_state->recv.current_digit_on_time = 0;
617 p_state->recv.current_digit_off_time = 0;
622 if (p_state->recv.current_digit_off_time != 0)
623 (p_state->recv.current_digit_off_time)--;
628 if ((p_state->recv.current_digit_on_time == 0)
629 && (p_state->recv.current_digit_off_time != 0))
631 (p_state->recv.current_digit_off_time)--;
635 n = p_state->recv.current_digit_off_time;
636 if ((p_state->recv.current_digit_on_time != 0)
637 && (result_digit != p_state->recv.current_digit_value))
639 p_state->recv.current_digit_on_time = 0;
642 p_state->recv.current_digit_value = result_digit;
643 p_state->recv.current_digit_off_time = 0;
644 if (p_state->recv.current_digit_on_time != 0xffff)
646 p_state->recv.current_digit_on_time += n + 1;
647 if (p_state->recv.current_digit_on_time >= p_state->recv.min_digit_duration)
649 p_state->recv.current_digit_on_time = 0xffff;
650 i = (p_state->recv.digit_write_pos == CAPIDTMF_RECV_DIGIT_BUFFER_SIZE - 1) ?
651 0 : p_state->recv.digit_write_pos + 1;
652 if (i == p_state->recv.digit_read_pos)
659 p_state->recv.digit_buffer[p_state->recv.digit_write_pos] = result_digit;
660 p_state->recv.digit_write_pos = i;
661 p_state->recv.indication_state =
662 (p_state->recv.indication_state & ~CAPIDTMF_RECV_INDICATION_DIGIT) |
663 (~p_state->recv.indication_state_ack & CAPIDTMF_RECV_INDICATION_DIGIT);
673 p_state->recv.cycle_counter = cycle_counter;
678 void capidtmf_init (t_capidtmf_state *p_state, byte ulaw)
680 p_state->ulaw = ulaw;
681 capidtmf_recv_init (p_state);