diff options
Diffstat (limited to 'xpp/xpp_zap.c')
| -rw-r--r-- | xpp/xpp_zap.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/xpp/xpp_zap.c b/xpp/xpp_zap.c index 52b2846..9a9ab0a 100644 --- a/xpp/xpp_zap.c +++ b/xpp/xpp_zap.c @@ -896,6 +896,30 @@ void fill_beep(u_char *buf, int duration) memcpy(buf, &beep[(which*8) % ARRAY_SIZE(beep)], ZT_CHUNKSIZE); } +#ifdef XPP_EC_CHUNK +/* + * Taken from zaptel.c + */ +static inline void xpp_ec_chunk(struct zt_chan *chan, unsigned char *rxchunk, const unsigned char *txchunk) +{ + short rxlin; + int x; + unsigned long flags; + + /* Perform echo cancellation on a chunk if necessary */ + if (!chan->ec) + return; + spin_lock_irqsave(&chan->lock, flags); + for (x=0;x<ZT_CHUNKSIZE;x++) { + rxlin = ZT_XLAW(rxchunk[x], chan); + rxlin = echo_can_update(chan->ec, ZT_XLAW(txchunk[x], chan), rxlin); + rxchunk[x] = ZT_LIN2X((int)rxlin, chan); + } + spin_unlock_irqrestore(&chan->lock, flags); +} +#endif + + static void xpp_receiveprep(xpd_t *xpd) { volatile u_char *readchunk; @@ -924,10 +948,14 @@ static void xpp_receiveprep(xpd_t *xpd) readchunk += ZT_CHUNKSIZE; } -#if 0 +#if WITH_ECHO_SUPPRESSION /* FIXME: need to Echo cancel double buffered data */ for (i = 0;i < xpd->span.channels; i++) { +#ifdef XPP_EC_CHUNK + xpp_ec_chunk(&chans[i], chans[i].readchunk, xpd->ec_chunk2[i]); +#else zt_ec_chunk(&chans[i], chans[i].readchunk, xpd->ec_chunk2[i]); +#endif memcpy(xpd->ec_chunk2[i], xpd->ec_chunk1[i], ZT_CHUNKSIZE); memcpy(xpd->ec_chunk1[i], chans[i].writechunk, ZT_CHUNKSIZE); } @@ -1517,18 +1545,19 @@ int __init xpp_zap_init(void) INFO("%s revision %s\n", THIS_MODULE->name, ZAPTEL_VERSION); #ifdef WITH_RBS - INFO("%s (RBS signalling)\n", THIS_MODULE->name); + INFO("FEATURE: %s (RBS signalling)\n", THIS_MODULE->name); #else - INFO("%s (NO RBS signalling)\n", THIS_MODULE->name); + INFO("FEATURE: %s (NO RBS signalling)\n", THIS_MODULE->name); #endif -#ifdef HARD_CODED_INIT -#ifdef OLD_CARD - INFO("%s (HARD_CODED_INIT: OLD_CARD)\n", THIS_MODULE->name); +#if WITH_ECHO_SUPPRESSION + INFO("FEATURE: %s (with ECHO_SUPPRESSION)\n", THIS_MODULE->name); #else - INFO("%s (HARD_CODED_INIT: NEW_CARD)\n", THIS_MODULE->name); + INFO("FEATURE: %s (without ECHO_SUPPRESSION)\n", THIS_MODULE->name); #endif +#ifdef XPP_EC_CHUNK + INFO("FEATURE: %s (with XPP_EC_CHUNK)\n", THIS_MODULE->name); #else - INFO("%s (DYNAMIC INIT REGISTERS)\n", THIS_MODULE->name); + INFO("FEATURE: %s (without XPP_EC_CHUNK)\n", THIS_MODULE->name); #endif #ifdef CONFIG_PROC_FS |