[zaptel-commits] kpfleming: branch 1.4 r3589 - in /branches/1.4: ./ hpec/

SVN commits to the Zaptel project zaptel-commits at lists.digium.com
Wed Jan 2 11:55:10 CST 2008


Author: kpfleming
Date: Wed Jan  2 11:55:09 2008
New Revision: 3589

URL: http://svn.digium.com/view/zaptel?view=rev&rev=3589
Log:
bring back the echocan-params code that was removed in r3545, this time with a small change made to ensure backwards compatibility with existing applications at both the binary and source code level

Removed:
    branches/1.4/mec.h
    branches/1.4/mec2.h
    branches/1.4/mec2_const.h
    branches/1.4/mec3-float.h
    branches/1.4/mec3.h
Modified:
    branches/1.4/Makefile
    branches/1.4/hpec/hpec_zaptel.h
    branches/1.4/kb1ec.h
    branches/1.4/mg2ec.h
    branches/1.4/sec-2.h
    branches/1.4/sec.h
    branches/1.4/zaptel-base.c
    branches/1.4/zaptel.h
    branches/1.4/zconfig.h

Modified: branches/1.4/Makefile
URL: http://svn.digium.com/view/zaptel/branches/1.4/Makefile?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/Makefile (original)
+++ branches/1.4/Makefile Wed Jan  2 11:55:09 2008
@@ -375,7 +375,7 @@
 
 tor2.o: tor2-hw.h tor2fw.h
 
-zaptel-base.o: digits.h arith.h sec.h mec.h sec-2.h mec2.h mec3.h zconfig.h
+zaptel-base.o: digits.h arith.h sec.h sec-2.h kb1ec.h mg2ec.h zconfig.h
 
 wcusb.o: wcusb.h
 

Modified: branches/1.4/hpec/hpec_zaptel.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/hpec/hpec_zaptel.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/hpec/hpec_zaptel.h (original)
+++ branches/1.4/hpec/hpec_zaptel.h Wed Jan  2 11:55:09 2008
@@ -87,18 +87,22 @@
 
 DECLARE_MUTEX(alloc_lock);
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
 {
-	struct echo_can_state *result = NULL;
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "HPEC does not support parameters; failing request\n");
+		return -EINVAL;
+	}
 
 	if (down_interruptible(&alloc_lock))
-		return NULL;
+		return -ENOTTY;
 
-	result = hpec_channel_alloc(len);
+	*ec = hpec_channel_alloc(ecp->tap_length);
 
 	up(&alloc_lock);
 
-	return result;
+	return *ec ? 0 : -ENOTTY;
 }
 
 static inline int echo_can_traintap(struct echo_can_state *ec, int pos, short val)

Modified: branches/1.4/kb1ec.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/kb1ec.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/kb1ec.h (original)
+++ branches/1.4/kb1ec.h Wed Jan  2 11:55:09 2008
@@ -529,12 +529,19 @@
 	return u;
 }
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
-{
-	struct echo_can_state *ec;
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
+{
 	int maxy;
 	int maxu;
-	maxy = len + DEFAULT_M;
+	size_t size;
+
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "KB1 echo canceler does not support parameters; failing request\n");
+		return -EINVAL;
+	}
+
+	maxy = ecp->tap_length + DEFAULT_M;
 	maxu = DEFAULT_M;
 	if (maxy < (1 << DEFAULT_ALPHA_YT_I))
 		maxy = (1 << DEFAULT_ALPHA_YT_I);
@@ -542,26 +549,24 @@
 		maxy = (1 << DEFAULT_SIGMA_LY_I);
 	if (maxu < (1 << DEFAULT_SIGMA_LU_I))
 		maxu = (1 << DEFAULT_SIGMA_LU_I);
-	ec = (struct echo_can_state *)MALLOC(sizeof(struct echo_can_state) +
-									4 + 						/* align */
-									sizeof(int) * len +			/* a_i */
-									sizeof(short) * len + 		/* a_s */
-									2 * sizeof(short) * (maxy) +	/* y_s */
-									2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
-									2 * sizeof(short) * (maxu) +		/* u_s */
-									2 * sizeof(short) * len);			/* y_tilde_s */
-	if (ec) {
-		memset(ec, 0, sizeof(struct echo_can_state) +
-									4 + 						/* align */
-									sizeof(int) * len +			/* a_i */
-									sizeof(short) * len + 		/* a_s */
-									2 * sizeof(short) * (maxy) +	/* y_s */
-									2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
-									2 * sizeof(short) * (maxu) +		/* u_s */
-									2 * sizeof(short) * len);			/* y_tilde_s */
-	  init_cc(ec, len, maxy, maxu);
-	}
-	return ec;
+
+	size = sizeof(*ec) +
+		4 + 						/* align */
+		sizeof(int) * ecp->tap_length +			/* a_i */
+		sizeof(short) * ecp->tap_length + 		/* a_s */
+		2 * sizeof(short) * (maxy) +			/* y_s */
+		2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
+		2 * sizeof(short) * (maxu) +			/* u_s */
+		2 * sizeof(short) * ecp->tap_length;		/* y_tilde_s */
+
+	if (!(*ec = MALLOC(size)))
+		return -ENOMEM;
+
+	memset(*ec, 0, size);
+
+	init_cc(*ec, ecp->tap_length, maxy, maxu);
+	
+	return 0;
 }
 
 static inline int echo_can_traintap(struct echo_can_state *ec, int pos, short val)

Modified: branches/1.4/mg2ec.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/mg2ec.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/mg2ec.h (original)
+++ branches/1.4/mg2ec.h Wed Jan  2 11:55:09 2008
@@ -508,7 +508,7 @@
 					memset(max_coeffs, 0, USED_COEFFS*sizeof(int));
 #endif
 #ifdef MEC2_STATS_DETAILED
-				printk( KERN_INFO "updating coefficients with: ec->Lu_i %9d\n", ec->Lu_i);
+				printk(KERN_INFO "updating coefficients with: ec->Lu_i %9d\n", ec->Lu_i);
 #endif
 #ifdef MEC2_STATS
 				ec->avg_Lu_i_ok = ec->avg_Lu_i_ok + ec->Lu_i;  
@@ -550,7 +550,7 @@
 #endif
 		 	 } else { 
 #ifdef MEC2_STATS_DETAILED
-				printk( KERN_INFO "insufficient signal to update coefficients ec->Lu_i %5d < %5d\n", ec->Lu_i, MIN_UPDATE_THRESH_I);
+				printk(KERN_INFO "insufficient signal to update coefficients ec->Lu_i %5d < %5d\n", ec->Lu_i, MIN_UPDATE_THRESH_I);
 #endif
 #ifdef MEC2_STATS
 				ec->avg_Lu_i_toolow = ec->avg_Lu_i_toolow + ec->Lu_i;  
@@ -565,7 +565,7 @@
 	 */
 #ifdef MEC2_STATS_DETAILED
 	if (ec->HCNTR_d == 0)
-		printk( KERN_INFO "possibily correcting frame with ec->Ly_i %9d ec->Lu_i %9d and expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
+		printk(KERN_INFO "possibily correcting frame with ec->Ly_i %9d ec->Lu_i %9d and expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
 #endif
 
 #ifndef NO_ECHO_SUPPRESSOR
@@ -575,7 +575,7 @@
 			u = u * (ec->Lu_i >> DEFAULT_SIGMA_LU_I) / ((ec->Ly_i >> (DEFAULT_SIGMA_LY_I)) + 1);
 		}
 #ifdef MEC2_STATS_DETAILED
-		printk( KERN_INFO "aggresively correcting frame with ec->Ly_i %9d ec->Lu_i %9d expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
+		printk(KERN_INFO "aggresively correcting frame with ec->Ly_i %9d ec->Lu_i %9d expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
 #endif
 #ifdef MEC2_STATS
 		++ec->cntr_residualcorrected_frames;
@@ -588,7 +588,7 @@
 	  			u = u * (ec->Lu_i >> DEFAULT_SIGMA_LU_I) / ((ec->Ly_i >> (DEFAULT_SIGMA_LY_I + 2)) + 1);
 			}
 #ifdef MEC2_STATS_DETAILED
-			printk( KERN_INFO "correcting frame with ec->Ly_i %9d ec->Lu_i %9d expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
+			printk(KERN_INFO "correcting frame with ec->Ly_i %9d ec->Lu_i %9d expression %d\n", ec->Ly_i, ec->Lu_i, (ec->Ly_i/(ec->Lu_i + 1)));
 #endif
 #ifdef MEC2_STATS
 		  	++ec->cntr_residualcorrected_frames;
@@ -628,7 +628,7 @@
 		else
 			ec->avg_Lu_i_ok = -1;
 
-		printk( KERN_INFO "%d: Near end speech: %5d Residuals corrected/skipped: %5d/%5d Coefficients updated ok/low sig: %3d/%3d Lu_i avg ok/low sig %6d/%5d\n", 
+		printk(KERN_INFO "%d: Near end speech: %5d Residuals corrected/skipped: %5d/%5d Coefficients updated ok/low sig: %3d/%3d Lu_i avg ok/low sig %6d/%5d\n", 
 			ec->id,
 			ec->cntr_nearend_speech_frames, 
 			ec->cntr_residualcorrected_frames, ec->cntr_residualcorrected_framesskipped, 
@@ -650,12 +650,19 @@
 	return u;
 }
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
-{
-	struct echo_can_state *ec;
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
+{
 	int maxy;
 	int maxu;
-	maxy = len + DEFAULT_M;
+	size_t size;
+
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "MG2 echo canceler does not support parameters; failing request\n");
+		return -EINVAL;
+	}
+
+	maxy = ecp->tap_length + DEFAULT_M;
 	maxu = DEFAULT_M;
 	if (maxy < (1 << DEFAULT_ALPHA_YT_I))
 		maxy = (1 << DEFAULT_ALPHA_YT_I);
@@ -663,30 +670,23 @@
 		maxy = (1 << DEFAULT_SIGMA_LY_I);
 	if (maxu < (1 << DEFAULT_SIGMA_LU_I))
 		maxu = (1 << DEFAULT_SIGMA_LU_I);
-	ec = (struct echo_can_state *)MALLOC(sizeof(struct echo_can_state) +
-									4 + 						/* align */
-									sizeof(int) * len +			/* a_i */
-									sizeof(short) * len + 		/* a_s */
-									sizeof(int) * len +		/* b_i */
-									sizeof(int) * len +		/* c_i */
-									2 * sizeof(short) * (maxy) +	/* y_s */
-									2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
-									2 * sizeof(short) * (maxu) +		/* u_s */
-									2 * sizeof(short) * len);			/* y_tilde_s */
-	if (ec) {
-		memset(ec, 0, sizeof(struct echo_can_state) +
-									4 + 						/* align */
-									sizeof(int) * len +			/* a_i */
-									sizeof(short) * len + 		/* a_s */
-									sizeof(int) * len +		/* b_i */
-									sizeof(int) * len +		/* c_i */
-									2 * sizeof(short) * (maxy) +	/* y_s */
-									2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
-									2 * sizeof(short) * (maxu) +		/* u_s */
-									2 * sizeof(short) * len);			/* y_tilde_s */
-		init_cc(ec, len, maxy, maxu);
-	}
-	return ec;
+	size = sizeof(**ec) +
+		4 + 						/* align */
+		sizeof(int) * ecp->tap_length +			/* a_i */
+		sizeof(short) * ecp->tap_length + 		/* a_s */
+		sizeof(int) * ecp->tap_length +			/* b_i */
+		sizeof(int) * ecp->tap_length +			/* c_i */
+		2 * sizeof(short) * (maxy) +			/* y_s */
+		2 * sizeof(short) * (1 << DEFAULT_ALPHA_ST_I) + /* s_s */
+		2 * sizeof(short) * (maxu) +			/* u_s */
+		2 * sizeof(short) * ecp->tap_length;		/* y_tilde_s */
+
+	if (!(*ec = MALLOC(size)))
+		return -ENOMEM;
+
+	memset(*ec, 0, size);
+
+	return 0;
 }
 
 static inline int echo_can_traintap(struct echo_can_state *ec, int pos, short val)

Modified: branches/1.4/sec-2.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/sec-2.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/sec-2.h (original)
+++ branches/1.4/sec-2.h Wed Jan  2 11:55:09 2008
@@ -97,7 +97,6 @@
 				   was skipped, for test purposes */
 };
 
-static struct echo_can_state *echo_can_create(int len, int adaption_mode);
 static void echo_can_free(struct echo_can_state *ec);
 static int16_t echo_can_update(struct echo_can_state *ec, int16_t tx, int16_t rx);
 
@@ -127,36 +126,44 @@
 /* #define MIN_TX_POWER_FOR_ADAPTION 4096
 #define MIN_RX_POWER_FOR_ADAPTION 64 */
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
-{
-    struct echo_can_state *ec;
-    void *ptr;
-    
-    ptr = ec = (struct echo_can_state *) MALLOC(sizeof(*ec) + len * sizeof(int32_t) +
-						   len * sizeof(int16_t));
-    if (ec == NULL)
-    	return  NULL;
-    memset(ec, 0, sizeof(*ec) + len * sizeof(int32_t) + len * sizeof(int16_t));
-    ec->taps = len;
-    ec->curr_pos = len - 1;
-    ec->tap_mask = len - 1;
-    ec->fir_taps32 = (int32_t *) (ptr + sizeof(*ec));
-    ec->fir_taps16 = (int16_t *) (ptr + sizeof(*ec) + len * sizeof(int32_t));
-    /* Create FIR filter */
-    fir16_create(&ec->fir_state, ec->fir_taps16, ec->taps);
-    ec->rx_power_threshold = 10000000;
-    ec->use_suppressor = FALSE;
-    /* Non-linear processor - a fancy way to say "zap small signals, to avoid
-       accumulating noise". */
-    ec->use_nlp = FALSE;
-    return  ec;
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
+{
+	size_t size;
+
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "SEC-2 echo canceler does not support parameters; failing request\n");
+		return -EINVAL;
+	}
+
+	size = sizeof(**ec) + ecp->tap_length * sizeof(int32_t) + ecp->tap_length * 3 * sizeof(int16_t);
+	
+	if (!(*ec = MALLOC(size)))
+		return -ENOMEM;
+	
+	memset(*ec, 0, size);
+
+	(*ec)->taps = ecp->tap_length;
+	(*ec)->curr_pos = ecp->tap_length - 1;
+	(*ec)->tap_mask = ecp->tap_length - 1;
+	(*ec)->fir_taps32 = (int32_t *) (*ec + sizeof(**ec));
+	(*ec)->fir_taps16 = (int16_t *) (*ec + sizeof(**ec) + ecp->tap_length * sizeof(int32_t));
+	/* Create FIR filter */
+	fir16_create(&(*ec)->fir_state, (*ec)->fir_taps16, (*ec)->taps);
+	(*ec)->rx_power_threshold = 10000000;
+	(*ec)->use_suppressor = FALSE;
+	/* Non-linear processor - a fancy way to say "zap small signals, to avoid
+	   accumulating noise". */
+	(*ec)->use_nlp = FALSE;
+
+	return 0;
 }
 /*- End of function --------------------------------------------------------*/
 
 static inline void echo_can_free(struct echo_can_state *ec)
 {
-    fir16_free(&ec->fir_state);
-    FREE(ec);
+	fir16_free(&ec->fir_state);
+	FREE(ec);
 }
 /*- End of function --------------------------------------------------------*/
 

Modified: branches/1.4/sec.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/sec.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/sec.h (original)
+++ branches/1.4/sec.h Wed Jan  2 11:55:09 2008
@@ -114,7 +114,6 @@
 {
 }
 
-static struct echo_can_state *echo_can_create(int len, int adaption_mode);
 static void echo_can_free(struct echo_can_state *ec);
 static int16_t echo_can_update(struct echo_can_state *ec, int16_t tx, int16_t rx);
 
@@ -131,33 +130,44 @@
 #define MIN_RX_POWER_FOR_ADAPTION   64
 */
 
-static inline struct echo_can_state *echo_can_create(int len, int adaption_mode)
-{
-    struct echo_can_state *ec;
-    void *ptr;
-    
-    ptr = ec = (struct echo_can_state *) MALLOC(sizeof(*ec) + len * sizeof(int32_t) +
-						   len * 3 * sizeof(int16_t));
-    if (ec == NULL)
-    	return  NULL;
-    memset(ec, 0, sizeof(*ec) + len * sizeof(int32_t) + len * 3 * sizeof(int16_t));
-    ec->taps = len;
-    ec->tap_mask = len - 1;
-    ec->tx_history = (int16_t *) (ptr + sizeof(*ec) );
-    ec->fir_taps = (int32_t *) (ptr + sizeof(*ec) + len * 2 * sizeof(int16_t));
-    ec->fir_taps_short = (int16_t *) (ptr + sizeof(*ec) + len * sizeof(int32_t) + len * 2 * sizeof(int16_t));
-    ec->rx_power_threshold = 10000000;
-    ec->use_suppressor = FALSE;
-    /* Non-linear processor - a fancy way to say "zap small signals, to avoid
-       accumulating noise". */
-    ec->use_nlp = TRUE;
-    return  ec;
+static int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p,
+			   struct echo_can_state **ec)
+{
+	size_t size;
+	
+	if (ecp->param_count > 0) {
+		printk(KERN_WARNING "SEC echo canceler does not support parameters; failing request\n");
+		return -EINVAL;
+	}
+	
+	size = sizeof(**ec) + ecp->tap_length * sizeof(int32_t) + ecp->tap_length * 3 * sizeof(int16_t);
+	
+	if (!(*ec = MALLOC(size)))
+		return -ENOMEM;
+	
+	memset(*ec, 0, size);
+
+	(*ec)->taps = ecp->tap_length;
+	(*ec)->tap_mask = ecp->tap_length - 1;
+	(*ec)->tx_history = (int16_t *) (*ec + sizeof(**ec));
+	(*ec)->fir_taps = (int32_t *) (*ec + sizeof(**ec) +
+				       ecp->tap_length * 2 * sizeof(int16_t));
+	(*ec)->fir_taps_short = (int16_t *) (*ec + sizeof(**ec) +
+					     ecp->tap_length * sizeof(int32_t) +
+					     ecp->tap_length * 2 * sizeof(int16_t));
+	(*ec)->rx_power_threshold = 10000000;
+	(*ec)->use_suppressor = FALSE;
+	/* Non-linear processor - a fancy way to say "zap small signals, to avoid
+	   accumulating noise". */
+	(*ec)->use_nlp = TRUE;
+
+	return 0;
 }
 /*- End of function --------------------------------------------------------*/
 
 static inline void echo_can_free(struct echo_can_state *ec)
 {
-    FREE(ec);
+	FREE(ec);
 }
 /*- End of function --------------------------------------------------------*/
 

Modified: branches/1.4/zaptel-base.c
URL: http://svn.digium.com/view/zaptel/branches/1.4/zaptel-base.c?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/zaptel-base.c (original)
+++ branches/1.4/zaptel-base.c Wed Jan  2 11:55:09 2008
@@ -419,18 +419,12 @@
 #include "sec.h"
 #elif defined(ECHO_CAN_STEVE2)
 #include "sec-2.h"
-#elif defined(ECHO_CAN_MARK)
-#include "mec.h"
-#elif defined(ECHO_CAN_MARK2)
-#include "mec2.h"
 #elif defined(ECHO_CAN_KB1)
 #include "kb1ec.h"
 #elif defined(ECHO_CAN_MG2)
 #include "mg2ec.h"
 #elif defined(ECHO_CAN_JP1)
 #include "jpah.h"
-#else
-#include "mec3.h"
 #endif
 
 static inline void rotate_sums(void)
@@ -4308,6 +4302,95 @@
 }
 #endif
 
+#define MAX_ECHOCANPARAMS 8
+
+static int ioctl_echocancel(struct zt_chan *chan, struct zt_echocanparams *ecp, void *data)
+{
+	struct echo_can_state *ec = NULL, *tec;
+	struct zt_echocanparam params[MAX_ECHOCANPARAMS];
+	int ret;
+	unsigned long flags;
+
+	if (ecp->param_count > MAX_ECHOCANPARAMS)
+		return -E2BIG;
+
+	if (ecp->tap_length == 0) {
+		/* disable mode, don't need to inspect params */
+		spin_lock_irqsave(&chan->lock, flags);
+		tec = chan->ec;
+		chan->echocancel = 0;
+		chan->ec = NULL;
+		chan->echostate = ECHO_STATE_IDLE;
+		chan->echolastupdate = 0;
+		chan->echotimer = 0;
+		spin_unlock_irqrestore(&chan->lock, flags);
+		if (chan->span && chan->span->echocan)
+			chan->span->echocan(chan, 0);
+		if (tec)
+			echo_can_free(tec);
+
+		return 0;
+	}
+
+	/* if parameters were supplied and this channel's span provides an echocan,
+	   but not one that takes params, then we must punt here and return an error */
+	if (ecp->param_count && chan->span && chan->span->echocan &&
+	    !chan->span->echocan_with_params)
+		return -EINVAL;
+	
+	/* enable mode, need the params */
+	
+	if (copy_from_user(params, (struct zt_echocanparam *) data, sizeof(params[0]) * ecp->param_count))
+		return -EFAULT;
+	
+	spin_lock_irqsave(&chan->lock, flags);
+	tec = chan->ec;
+	chan->ec = NULL;
+	spin_unlock_irqrestore(&chan->lock, flags);
+	
+	ret = -ENOTTY;
+	
+	/* attempt to use the span's echo canceler; fall back to built-in
+	   if it fails (but not if an error occurs) */
+	if (chan->span && chan->span->echocan_with_params)
+		ret = chan->span->echocan_with_params(chan, ecp, params);
+	
+	if (ret == -ENOTTY) {
+		switch (ecp->tap_length) {
+		case 32:
+		case 64:
+		case 128:
+		case 256:
+		case 512:
+		case 1024:
+			break;
+		default:
+			ecp->tap_length = deftaps;
+		}
+		
+		if ((ret = echo_can_create(ecp, params, &ec))) {
+			if (tec)
+				echo_can_free(tec);
+			return ret;
+		}
+		
+		spin_lock_irqsave(&chan->lock, flags);
+		chan->echocancel = ecp->tap_length;
+		chan->ec = ec;
+		chan->echostate = ECHO_STATE_IDLE;
+		chan->echolastupdate = 0;
+		chan->echotimer = 0;
+		echo_can_disable_detector_init(&chan->txecdis);
+		echo_can_disable_detector_init(&chan->rxecdis);
+		spin_unlock_irqrestore(&chan->lock, flags);
+	}
+
+	if (tec)
+		echo_can_free(tec);
+
+	return ret;
+}
+
 static int zt_chan_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long data, int unit)
 {
 	struct zt_chan *chan = chans[unit];
@@ -4316,7 +4399,8 @@
 	int ret;
 	int oldconf;
 	void *rxgain=NULL;
-	struct echo_can_state *ec, *tec;
+	struct echo_can_state *ec;
+	struct zt_echocanparams ecp;
 
 	if (!chan)
 		return -ENOSYS;
@@ -4478,65 +4562,23 @@
 			fasthdlc_init(&chan->txhdlc);
 		}
 		break;
+	case ZT_ECHOCANCEL_PARAMS:
+		if (!(chan->flags & ZT_FLAG_AUDIO))
+			return -EINVAL;
+		if (copy_from_user(&ecp, (struct zt_echocanparams *) data, sizeof(ecp)))
+			return -EFAULT;
+		data += sizeof(ecp);
+		if ((ret = ioctl_echocancel(chan, &ecp, (void *) data)))
+			return ret;
+		break;
 	case ZT_ECHOCANCEL:
 		if (!(chan->flags & ZT_FLAG_AUDIO))
 			return -EINVAL;
-		get_user(j, (int *)data);
-		if (j) {
-			spin_lock_irqsave(&chan->lock, flags);
-			/* If we had an old echo can, zap it now */
-			tec = chan->ec;
-			chan->ec = NULL;
-			/* Attempt hardware native echo can */
-			spin_unlock_irqrestore(&chan->lock, flags);
-
-			if (chan->span && chan->span->echocan)
-				ret = chan->span->echocan(chan, j);
-			else
-				ret = -ENOTTY;
-
-			if (ret) {
-				/* Use built-in echo can */
-				if ((j == 32) ||
-				    (j == 64) ||
-				    (j == 128) ||
-				    (j == 256) ||
-				    (j == 512) ||
-				    (j == 1024)) {
-					/* Okay */
-				} else {
-					j = deftaps;
-				}
-				ec = echo_can_create(j, 0);
-				if (!ec)
-					return -ENOMEM;
-				spin_lock_irqsave(&chan->lock, flags);
-				chan->echocancel = j;
-				chan->ec = ec;
-				chan->echostate = ECHO_STATE_IDLE;
-				chan->echolastupdate = 0;
-				chan->echotimer = 0;
-				echo_can_disable_detector_init(&chan->txecdis);
-				echo_can_disable_detector_init(&chan->rxecdis);
-				spin_unlock_irqrestore(&chan->lock, flags);
-			}
-			if (tec)
-				echo_can_free(tec);
-		} else {
-			spin_lock_irqsave(&chan->lock, flags);
-			tec = chan->ec;
-			chan->echocancel = 0;
-			chan->ec = NULL;
-			chan->echostate = ECHO_STATE_IDLE;
-			chan->echolastupdate = 0;
-			chan->echotimer = 0;
-			spin_unlock_irqrestore(&chan->lock, flags);
-			/* Attempt hardware native echo can */
-			if (chan->span && chan->span->echocan)
-				chan->span->echocan(chan, 0);
-			if (tec)
-				echo_can_free(tec);
-		}
+		get_user(j, (int *) data);
+		ecp.tap_length = j;
+		ecp.param_count = 0;
+		if ((ret = ioctl_echocancel(chan, &ecp, NULL)))
+			return ret;
 		break;
 	case ZT_ECHOTRAIN:
 		get_user(j, (int *)data); /* get pre-training time from user */

Modified: branches/1.4/zaptel.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/zaptel.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/zaptel.h (original)
+++ branches/1.4/zaptel.h Wed Jan  2 11:55:09 2008
@@ -560,11 +560,18 @@
 
 /*
  * Enable or disable echo cancellation on a channel 
+ *
+ * For ECHOCANCEL:
  * The number is zero to disable echo cancellation and non-zero
  * to enable echo cancellation.  If the number is between 32
- * and 256, it will also set the number of taps in the echo canceller
+ * and 1024, it will also set the number of taps in the echo canceller
+ *
+ * For ECHOCANCEL_PARAMS:
+ * The structure contains parameters that should be passed to the
+ * echo canceler instance for the selected channel.
  */
 #define ZT_ECHOCANCEL		_IOW (ZT_CODE, 33, int)
+#define ZT_ECHOCANCEL_PARAMS	_IOW (ZT_CODE, 33, struct zt_echocanparams)
 
 /*
  * Return a channel's channel number (useful for the /dev/zap/pseudo type interfaces 
@@ -866,6 +873,17 @@
 
 struct zt_ring_cadence {
 	int ringcadence[ZT_MAX_CADENCE];
+};
+
+struct zt_echocanparam {
+	char name[8];
+	unsigned int value;
+};
+
+struct zt_echocanparams {
+	unsigned int tap_length;		/* 8 taps per millisecond */
+	unsigned int param_count;		/* number of parameters supplied */
+	/* immediately follow this structure with zt_echocanparam structures */
 };
 
 struct zt_tone_def_header {
@@ -1165,7 +1183,7 @@
 void echo_can_init(void);
 void echo_chan_shutdown(void);
 void echo_can_identify(char *buf, size_t len);
-struct echo_can_state *echo_can_create(int len, int adaption_mode);
+int echo_can_create(struct zt_echocanparams *ecp, struct zt_echocanparam *p, struct echo_can_state **ec);
 void echo_can_free(struct echo_can_state *ec);
 short echo_can_update(struct echo_can_state *ec, short iref, short isig);
 void echo_can_array_update(struct echo_can_state *ec, short *iref, short *isig);
@@ -1514,8 +1532,10 @@
 	/* Opt: IOCTL */
 	int (*ioctl)(struct zt_chan *chan, unsigned int cmd, unsigned long data);
 	
-	/* Opt: Native echo cancellation */
+	/* Opt: Native echo cancellation (simple) */
 	int (*echocan)(struct zt_chan *chan, int ecval);
+
+	int (*echocan_with_params)(struct zt_chan *chan, struct zt_echocanparams *ecp, struct zt_echocanparam *p);
 
 	/* Okay, now we get to the signalling.  You have several options: */
 

Modified: branches/1.4/zconfig.h
URL: http://svn.digium.com/view/zaptel/branches/1.4/zconfig.h?view=diff&rev=3589&r1=3588&r2=3589
==============================================================================
--- branches/1.4/zconfig.h (original)
+++ branches/1.4/zconfig.h Wed Jan  2 11:55:09 2008
@@ -63,9 +63,6 @@
  */ 
 /* #define ECHO_CAN_STEVE */
 /* #define ECHO_CAN_STEVE2 */
-/* #define ECHO_CAN_MARK */
-/* #define ECHO_CAN_MARK2 */
-/* #define ECHO_CAN_MARK3 */
 /* #define ECHO_CAN_KB1 */
 /* This is the new latest and greatest */
 #define ECHO_CAN_MG2




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