diff options
Diffstat (limited to 'drivers/dahdi/dahdi_echocan_oslec.c')
-rw-r--r-- | drivers/dahdi/dahdi_echocan_oslec.c | 86 |
1 files changed, 60 insertions, 26 deletions
diff --git a/drivers/dahdi/dahdi_echocan_oslec.c b/drivers/dahdi/dahdi_echocan_oslec.c index 4d1c53f..a8d38b9 100644 --- a/drivers/dahdi/dahdi_echocan_oslec.c +++ b/drivers/dahdi/dahdi_echocan_oslec.c @@ -32,73 +32,107 @@ /* Fix this if OSLEC is elsewhere */ #include "../staging/echo/oslec.h" //#include <linux/oslec.h> -/* "provide" struct echo_can_state */ -//#define oslec_state echo_can_state #include <dahdi/kernel.h> #define module_printk(level, fmt, args...) printk(level "%s: " fmt, THIS_MODULE->name, ## args) -static void echo_can_free(struct echo_can_state *ec) +static int echo_can_create(struct dahdi_chan *chan, struct dahdi_echocanparams *ecp, + struct dahdi_echocanparam *p, struct dahdi_echocan_state **ec); +static void echo_can_free(struct dahdi_chan *chan, struct dahdi_echocan_state *ec); +static void echo_can_process(struct dahdi_echocan_state *ec, short *isig, const short *iref, u32 size); +static int echo_can_traintap(struct dahdi_echocan_state *ec, int pos, short val); + +static const struct dahdi_echocan_factory my_factory = { + .name = "OSLEC", + .owner = THIS_MODULE, + .echocan_create = echo_can_create, +}; + +static const struct dahdi_echocan_ops my_ops = { + .name = "OSLEC", + .echocan_free = echo_can_free, + .echocan_process = echo_can_process, + .echocan_traintap = echo_can_traintap, +}; + +struct ec_pvt { + struct oslec_state *oslec; + struct dahdi_echocan_state dahdi; +}; + +#define dahdi_to_pvt(a) container_of(a, struct ec_pvt, dahdi) + +static void echo_can_free(struct dahdi_chan *chan, struct dahdi_echocan_state *ec) { - oslec_free((struct oslec_state *)ec); + struct ec_pvt *pvt = dahdi_to_pvt(ec); + + oslec_free(pvt->oslec); + kfree(pvt); } -static void echo_can_update(struct echo_can_state *ec, short *isig, short *iref) +static void echo_can_process(struct dahdi_echocan_state *ec, short *isig, const short *iref, u32 size) { - unsigned int SampleNum; + struct ec_pvt *pvt = dahdi_to_pvt(ec); + u32 SampleNum; - for (SampleNum = 0; SampleNum < DAHDI_CHUNKSIZE; SampleNum++, iref++) - { + for (SampleNum = 0; SampleNum < size; SampleNum++, iref++) { short iCleanSample; - iCleanSample = (short) oslec_update((struct oslec_state *)ec, *iref, *isig); + + iCleanSample = oslec_update(pvt->oslec, *iref, *isig); *isig++ = iCleanSample; } } -static int echo_can_create(struct dahdi_echocanparams *ecp, struct dahdi_echocanparam *p, - struct echo_can_state **ec) +static int echo_can_create(struct dahdi_chan *chan, struct dahdi_echocanparams *ecp, + struct dahdi_echocanparam *p, struct dahdi_echocan_state **ec) { + struct ec_pvt *pvt; + if (ecp->param_count > 0) { printk(KERN_WARNING "OSLEC does not support parameters; failing request\n"); return -EINVAL; } - *ec = (struct echo_can_state *)oslec_create(ecp->tap_length, ECHO_CAN_USE_ADAPTION | ECHO_CAN_USE_NLP | ECHO_CAN_USE_CLIP | ECHO_CAN_USE_TX_HPF | ECHO_CAN_USE_RX_HPF); + pvt = kzalloc(sizeof(*pvt), GFP_KERNEL); + if (!pvt) + return -ENOMEM; + + pvt->dahdi.ops = &my_ops; + + pvt->oslec = oslec_create(ecp->tap_length, ECHO_CAN_USE_ADAPTION | ECHO_CAN_USE_NLP | ECHO_CAN_USE_CLIP | ECHO_CAN_USE_TX_HPF | ECHO_CAN_USE_RX_HPF); - return *ec ? 0 : -ENOTTY; + if (!pvt->oslec) { + kfree(pvt); + *ec = NULL; + return -ENOTTY; + } else { + *ec = &pvt->dahdi; + return 0; + } } -static inline int echo_can_traintap(struct echo_can_state *ec, int pos, short val) +static int echo_can_traintap(struct dahdi_echocan_state *ec, int pos, short val) { return 1; } -static const struct dahdi_echocan me = { - .name = "OSLEC", - .owner = THIS_MODULE, - .echo_can_create = echo_can_create, - .echo_can_free = echo_can_free, - .echo_can_array_update = echo_can_update, - .echo_can_traintap = echo_can_traintap, -}; - static int __init mod_init(void) { - if (dahdi_register_echocan(&me)) { + if (dahdi_register_echocan_factory(&my_factory)) { module_printk(KERN_ERR, "could not register with DAHDI core\n"); return -EPERM; } - module_printk(KERN_INFO, "Registered echo canceler '%s'\n", me.name); + module_printk(KERN_INFO, "Registered echo canceler '%s'\n", my_factory.name); return 0; } static void __exit mod_exit(void) { - dahdi_unregister_echocan(&me); + dahdi_unregister_echocan_factory(&my_factory); } MODULE_DESCRIPTION("DAHDI OSLEC wrapper"); |