diff options
Diffstat (limited to 'drivers/isdn/mISDN/dsp_dtmf.c')
| -rw-r--r-- | drivers/isdn/mISDN/dsp_dtmf.c | 66 |
1 files changed, 32 insertions, 34 deletions
diff --git a/drivers/isdn/mISDN/dsp_dtmf.c b/drivers/isdn/mISDN/dsp_dtmf.c index 5b484c3f4af..887860bdc63 100644 --- a/drivers/isdn/mISDN/dsp_dtmf.c +++ b/drivers/isdn/mISDN/dsp_dtmf.c @@ -61,31 +61,31 @@ void dsp_dtmf_hardware(struct dsp *dsp) if (dsp->tx_volume) { if (dsp_debug & DEBUG_DSP_DTMF) printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, " - "because tx_volume is changed\n", - __func__, dsp->name); + "because tx_volume is changed\n", + __func__, dsp->name); hardware = 0; } if (dsp->rx_volume) { if (dsp_debug & DEBUG_DSP_DTMF) printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, " - "because rx_volume is changed\n", - __func__, dsp->name); + "because rx_volume is changed\n", + __func__, dsp->name); hardware = 0; } /* check if encryption is enabled */ if (dsp->bf_enable) { if (dsp_debug & DEBUG_DSP_DTMF) printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, " - "because encryption is enabled\n", - __func__, dsp->name); + "because encryption is enabled\n", + __func__, dsp->name); hardware = 0; } /* check if pipeline exists */ if (dsp->pipeline.inuse) { if (dsp_debug & DEBUG_DSP_DTMF) printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, " - "because pipeline exists.\n", - __func__, dsp->name); + "because pipeline exists.\n", + __func__, dsp->name); hardware = 0; } @@ -150,23 +150,23 @@ again: if (len < 64) { if (len > 0) printk(KERN_ERR "%s: coefficients have invalid " - "size. (is=%d < must=%d)\n", - __func__, len, 64); + "size. (is=%d < must=%d)\n", + __func__, len, 64); return dsp->dtmf.digits; } hfccoeff = (s32 *)data; for (k = 0; k < NCOEFF; k++) { - sk2 = (*hfccoeff++)>>4; - sk = (*hfccoeff++)>>4; + sk2 = (*hfccoeff++) >> 4; + sk = (*hfccoeff++) >> 4; if (sk > 32767 || sk < -32767 || sk2 > 32767 || sk2 < -32767) printk(KERN_WARNING - "DTMF-Detection overflow\n"); + "DTMF-Detection overflow\n"); /* compute |X(k)|**2 */ result[k] = - (sk * sk) - - (((cos2pik[k] * sk) >> 15) * sk2) + - (sk2 * sk2); + (sk * sk) - + (((cos2pik[k] * sk) >> 15) * sk2) + + (sk2 * sk2); } data += 64; len -= 64; @@ -188,7 +188,7 @@ again: buf = dsp->dtmf.buffer; cos2pik_ = cos2pik[k]; for (n = 0; n < DSP_DTMF_NPOINTS; n++) { - sk = ((cos2pik_*sk1)>>15) - sk2 + (*buf++); + sk = ((cos2pik_ * sk1) >> 15) - sk2 + (*buf++); sk2 = sk1; sk1 = sk; } @@ -224,14 +224,14 @@ coefficients: if (dsp_debug & DEBUG_DSP_DTMFCOEFF) printk(KERN_DEBUG "a %3d %3d %3d %3d %3d %3d %3d %3d" - " tr:%3d r %3d %3d %3d %3d %3d %3d %3d %3d\n", - result[0]/10000, result[1]/10000, result[2]/10000, - result[3]/10000, result[4]/10000, result[5]/10000, - result[6]/10000, result[7]/10000, tresh/10000, - result[0]/(tresh/100), result[1]/(tresh/100), - result[2]/(tresh/100), result[3]/(tresh/100), - result[4]/(tresh/100), result[5]/(tresh/100), - result[6]/(tresh/100), result[7]/(tresh/100)); + " tr:%3d r %3d %3d %3d %3d %3d %3d %3d %3d\n", + result[0] / 10000, result[1] / 10000, result[2] / 10000, + result[3] / 10000, result[4] / 10000, result[5] / 10000, + result[6] / 10000, result[7] / 10000, tresh / 10000, + result[0] / (tresh / 100), result[1] / (tresh / 100), + result[2] / (tresh / 100), result[3] / (tresh / 100), + result[4] / (tresh / 100), result[5] / (tresh / 100), + result[6] / (tresh / 100), result[7] / (tresh / 100)); /* calc digit (lowgroup/highgroup) */ lowgroup = -1; @@ -247,7 +247,7 @@ coefficients: break; /* noise in between */ } /* good level found. This is allowed only one time per group */ - if (i < NCOEFF/2) { + if (i < NCOEFF / 2) { /* lowgroup */ if (lowgroup >= 0) { /* Bad. Another tone found. */ @@ -262,7 +262,7 @@ coefficients: highgroup = -1; break; } else - highgroup = i-(NCOEFF/2); + highgroup = i - (NCOEFF / 2); } } @@ -285,13 +285,13 @@ storedigit: if (what) { if (dsp_debug & DEBUG_DSP_DTMF) printk(KERN_DEBUG "DTMF digit: %c\n", - what); - if ((strlen(dsp->dtmf.digits)+1) - < sizeof(dsp->dtmf.digits)) { + what); + if ((strlen(dsp->dtmf.digits) + 1) + < sizeof(dsp->dtmf.digits)) { dsp->dtmf.digits[strlen( - dsp->dtmf.digits)+1] = '\0'; + dsp->dtmf.digits) + 1] = '\0'; dsp->dtmf.digits[strlen( - dsp->dtmf.digits)] = what; + dsp->dtmf.digits)] = what; } } } @@ -302,5 +302,3 @@ storedigit: goto again; } - - |