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-rw-r--r--drivers/staging/echo/echo.c78
1 files changed, 39 insertions, 39 deletions
diff --git a/drivers/staging/echo/echo.c b/drivers/staging/echo/echo.c
index 5882139d49af..9597e9523cac 100644
--- a/drivers/staging/echo/echo.c
+++ b/drivers/staging/echo/echo.c
@@ -267,13 +267,13 @@ struct oslec_state *oslec_create(int len, int adaption_mode)
goto error_snap;
ec->cond_met = 0;
- ec->Pstates = 0;
- ec->Ltxacc = ec->Lrxacc = ec->Lcleanacc = ec->Lclean_bgacc = 0;
- ec->Ltx = ec->Lrx = ec->Lclean = ec->Lclean_bg = 0;
+ ec->pstates = 0;
+ ec->ltxacc = ec->lrxacc = ec->lcleanacc = ec->lclean_bgacc = 0;
+ ec->ltx = ec->lrx = ec->lclean = ec->lclean_bg = 0;
ec->tx_1 = ec->tx_2 = ec->rx_1 = ec->rx_2 = 0;
- ec->Lbgn = ec->Lbgn_acc = 0;
- ec->Lbgn_upper = 200;
- ec->Lbgn_upper_acc = ec->Lbgn_upper << 13;
+ ec->lbgn = ec->lbgn_acc = 0;
+ ec->lbgn_upper = 200;
+ ec->lbgn_upper_acc = ec->lbgn_upper << 13;
return ec;
@@ -314,13 +314,13 @@ void oslec_flush(struct oslec_state *ec)
{
int i;
- ec->Ltxacc = ec->Lrxacc = ec->Lcleanacc = ec->Lclean_bgacc = 0;
- ec->Ltx = ec->Lrx = ec->Lclean = ec->Lclean_bg = 0;
+ ec->ltxacc = ec->lrxacc = ec->lcleanacc = ec->lclean_bgacc = 0;
+ ec->ltx = ec->lrx = ec->lclean = ec->lclean_bg = 0;
ec->tx_1 = ec->tx_2 = ec->rx_1 = ec->rx_2 = 0;
- ec->Lbgn = ec->Lbgn_acc = 0;
- ec->Lbgn_upper = 200;
- ec->Lbgn_upper_acc = ec->Lbgn_upper << 13;
+ ec->lbgn = ec->lbgn_acc = 0;
+ ec->lbgn_upper = 200;
+ ec->lbgn_upper_acc = ec->lbgn_upper << 13;
ec->nonupdate_dwell = 0;
@@ -332,7 +332,7 @@ void oslec_flush(struct oslec_state *ec)
memset(ec->fir_taps16[i], 0, ec->taps * sizeof(int16_t));
ec->curr_pos = ec->taps - 1;
- ec->Pstates = 0;
+ ec->pstates = 0;
}
EXPORT_SYMBOL_GPL(oslec_flush);
@@ -418,33 +418,33 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
new = (int)tx * (int)tx;
old = (int)ec->fir_state.history[ec->fir_state.curr_pos] *
(int)ec->fir_state.history[ec->fir_state.curr_pos];
- ec->Pstates +=
+ ec->pstates +=
((new - old) + (1 << (ec->log2taps - 1))) >> ec->log2taps;
- if (ec->Pstates < 0)
- ec->Pstates = 0;
+ if (ec->pstates < 0)
+ ec->pstates = 0;
}
/* Calculate short term average levels using simple single pole IIRs */
- ec->Ltxacc += abs(tx) - ec->Ltx;
- ec->Ltx = (ec->Ltxacc + (1 << 4)) >> 5;
- ec->Lrxacc += abs(rx) - ec->Lrx;
- ec->Lrx = (ec->Lrxacc + (1 << 4)) >> 5;
+ ec->ltxacc += abs(tx) - ec->ltx;
+ ec->ltx = (ec->ltxacc + (1 << 4)) >> 5;
+ ec->lrxacc += abs(rx) - ec->lrx;
+ ec->lrx = (ec->lrxacc + (1 << 4)) >> 5;
/* Foreground filter */
ec->fir_state.coeffs = ec->fir_taps16[0];
echo_value = fir16(&ec->fir_state, tx);
ec->clean = rx - echo_value;
- ec->Lcleanacc += abs(ec->clean) - ec->Lclean;
- ec->Lclean = (ec->Lcleanacc + (1 << 4)) >> 5;
+ ec->lcleanacc += abs(ec->clean) - ec->lclean;
+ ec->lclean = (ec->lcleanacc + (1 << 4)) >> 5;
/* Background filter */
echo_value = fir16(&ec->fir_state_bg, tx);
clean_bg = rx - echo_value;
- ec->Lclean_bgacc += abs(clean_bg) - ec->Lclean_bg;
- ec->Lclean_bg = (ec->Lclean_bgacc + (1 << 4)) >> 5;
+ ec->lclean_bgacc += abs(clean_bg) - ec->lclean_bg;
+ ec->lclean_bg = (ec->lclean_bgacc + (1 << 4)) >> 5;
/* Background Filter adaption */
@@ -455,7 +455,7 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
ec->factor = 0;
ec->shift = 0;
if ((ec->nonupdate_dwell == 0)) {
- int P, logP, shift;
+ int p, logp, shift;
/* Determine:
@@ -490,9 +490,9 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
for a divide versus a top_bit() implementation.
*/
- P = MIN_TX_POWER_FOR_ADAPTION + ec->Pstates;
- logP = top_bit(P) + ec->log2taps;
- shift = 30 - 2 - logP;
+ p = MIN_TX_POWER_FOR_ADAPTION + ec->pstates;
+ logp = top_bit(p) + ec->log2taps;
+ shift = 30 - 2 - logp;
ec->shift = shift;
lms_adapt_bg(ec, clean_bg, shift);
@@ -502,7 +502,7 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
near end speech */
ec->adapt = 0;
- if ((ec->Lrx > MIN_RX_POWER_FOR_ADAPTION) && (ec->Lrx > ec->Ltx))
+ if ((ec->lrx > MIN_RX_POWER_FOR_ADAPTION) && (ec->lrx > ec->ltx))
ec->nonupdate_dwell = DTD_HANGOVER;
if (ec->nonupdate_dwell)
ec->nonupdate_dwell--;
@@ -515,9 +515,9 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
if ((ec->adaption_mode & ECHO_CAN_USE_ADAPTION) &&
(ec->nonupdate_dwell == 0) &&
/* (ec->Lclean_bg < 0.875*ec->Lclean) */
- (8 * ec->Lclean_bg < 7 * ec->Lclean) &&
+ (8 * ec->lclean_bg < 7 * ec->lclean) &&
/* (ec->Lclean_bg < 0.125*ec->Ltx) */
- (8 * ec->Lclean_bg < ec->Ltx)) {
+ (8 * ec->lclean_bg < ec->ltx)) {
if (ec->cond_met == 6) {
/*
* BG filter has had better results for 6 consecutive
@@ -541,14 +541,14 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
* non-linearity in the channel.".
*/
- if ((16 * ec->Lclean < ec->Ltx)) {
+ if ((16 * ec->lclean < ec->ltx)) {
/*
* Our e/c has improved echo by at least 24 dB (each
* factor of 2 is 6dB, so 2*2*2*2=16 is the same as
* 6+6+6+6=24dB)
*/
if (ec->adaption_mode & ECHO_CAN_USE_CNG) {
- ec->cng_level = ec->Lbgn;
+ ec->cng_level = ec->lbgn;
/*
* Very elementary comfort noise generation.
@@ -571,10 +571,10 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
} else if (ec->adaption_mode & ECHO_CAN_USE_CLIP) {
/* This sounds much better than CNG */
- if (ec->clean_nlp > ec->Lbgn)
- ec->clean_nlp = ec->Lbgn;
- if (ec->clean_nlp < -ec->Lbgn)
- ec->clean_nlp = -ec->Lbgn;
+ if (ec->clean_nlp > ec->lbgn)
+ ec->clean_nlp = ec->lbgn;
+ if (ec->clean_nlp < -ec->lbgn)
+ ec->clean_nlp = -ec->lbgn;
} else {
/*
* just mute the residual, doesn't sound very
@@ -593,9 +593,9 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
* level signals like near end speech. When combined
* with CNG or especially CLIP seems to work OK.
*/
- if (ec->Lclean < 40) {
- ec->Lbgn_acc += abs(ec->clean) - ec->Lbgn;
- ec->Lbgn = (ec->Lbgn_acc + (1 << 11)) >> 12;
+ if (ec->lclean < 40) {
+ ec->lbgn_acc += abs(ec->clean) - ec->lbgn;
+ ec->lbgn = (ec->lbgn_acc + (1 << 11)) >> 12;
}
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.