67         priv_t * echos = (priv_t *) effp->priv;  in sox_echos_getopts()  local
70         echos->num_delays = 0;  in sox_echos_getopts()
77         sscanf(argv[i++], "%f", &echos->in_gain);  in sox_echos_getopts()
78         sscanf(argv[i++], "%f", &echos->out_gain);  in sox_echos_getopts()
81                 sscanf(argv[i++], "%f", &echos->delay[echos->num_delays]);  in sox_echos_getopts()
82                 sscanf(argv[i++], "%f", &echos->decay[echos->num_delays]);  in sox_echos_getopts()
83                 echos->num_delays++;  in sox_echos_getopts()
84                 if ( echos->num_delays > MAX_ECHOS )  in sox_echos_getopts()
91         echos->sumsamples = 0;  in sox_echos_getopts()
100         priv_t * echos = (priv_t *) effp->priv;  in sox_echos_start()  local
105         if ( echos->in_gain < 0.0 )  in sox_echos_start()
110         if ( echos->in_gain > 1.0 )  in sox_echos_start()
115         if ( echos->out_gain < 0.0 )  in sox_echos_start()
120         for ( i = 0; i < echos->num_delays; i++ ) {  in sox_echos_start()
121                 echos->samples[i] = echos->delay[i] * effp->in_signal.rate / 1000.0;  in sox_echos_start()
122                 if ( echos->samples[i] < 1 )  in sox_echos_start()
127                 if ( echos->samples[i] > (ptrdiff_t)DELAY_BUFSIZ )  in sox_echos_start()
133                 if ( echos->decay[i] < 0.0 )  in sox_echos_start()
138                 if ( echos->decay[i] > 1.0 )  in sox_echos_start()
143                 echos->counter[i] = 0;  in sox_echos_start()
144                 echos->pointer[i] = echos->sumsamples;  in sox_echos_start()
145                 echos->sumsamples += echos->samples[i];  in sox_echos_start()
147         echos->delay_buf = lsx_malloc(sizeof (double) * echos->sumsamples);  in sox_echos_start()
148         for ( j = 0; j < echos->sumsamples; ++j )  in sox_echos_start()
149                 echos->delay_buf[j] = 0.0;  in sox_echos_start()
152         for ( i = 0; i < echos->num_delays; i++ )  in sox_echos_start()
153                 sum_in_volume += echos->decay[i];  in sox_echos_start()
154         if ( sum_in_volume * echos->in_gain > 1.0 / echos->out_gain )  in sox_echos_start()
169         priv_t * echos = (priv_t *) effp->priv;  in sox_echos_flow()  local
180                 d_out = d_in * echos->in_gain;  in sox_echos_flow()
181                 for ( j = 0; j < echos->num_delays; j++ ) {  in sox_echos_flow()
182 …                d_out += echos->delay_buf[echos->counter[j] + echos->pointer[j]] * echos->decay[j];  in sox_echos_flow()
185                 d_out = d_out * echos->out_gain;  in sox_echos_flow()
189                 for ( j = 0; j < echos->num_delays; j++ ) {  in sox_echos_flow()
191                                 echos->delay_buf[echos->counter[j] + echos->pointer[j]] = d_in;  in sox_echos_flow()
193                                 echos->delay_buf[echos->counter[j] + echos->pointer[j]] =  in sox_echos_flow()
194 …                                echos->delay_buf[echos->counter[j-1] + echos->pointer[j-1]] + d_in;  in sox_echos_flow()
197                 for ( j = 0; j < echos->num_delays; j++ )  in sox_echos_flow()
198                         echos->counter[j] =  in sox_echos_flow()
199                            ( echos->counter[j] + 1 ) % echos->samples[j];  in sox_echos_flow()
210         priv_t * echos = (priv_t *) effp->priv;  in sox_echos_drain()  local
218         while ( ( done < *osamp ) && ( done < echos->sumsamples ) ) {  in sox_echos_drain()
221                 for ( j = 0; j < echos->num_delays; j++ ) {  in sox_echos_drain()
222 …                d_out += echos->delay_buf[echos->counter[j] + echos->pointer[j]] * echos->decay[j];  in sox_echos_drain()
225                 d_out = d_out * echos->out_gain;  in sox_echos_drain()
229                 for ( j = 0; j < echos->num_delays; j++ ) {  in sox_echos_drain()
231                                 echos->delay_buf[echos->counter[j] + echos->pointer[j]] = d_in;  in sox_echos_drain()
233                                 echos->delay_buf[echos->counter[j] + echos->pointer[j]] =  in sox_echos_drain()
234                                    echos->delay_buf[echos->counter[j-1] + echos->pointer[j-1]];  in sox_echos_drain()
237                 for ( j = 0; j < echos->num_delays; j++ )  in sox_echos_drain()
238                         echos->counter[j] =  in sox_echos_drain()
239                            ( echos->counter[j] + 1 ) % echos->samples[j];  in sox_echos_drain()
241                 echos->sumsamples--;  in sox_echos_drain()
245         if (echos->sumsamples == 0)  in sox_echos_drain()
256         priv_t * echos = (priv_t *) effp->priv;  in sox_echos_stop()  local
258         free(echos->delay_buf);  in sox_echos_stop()
259         echos->delay_buf = NULL;  in sox_echos_stop()