1 files changed, 0 insertions, 65 deletions
diff --git a/ANDROID_3.4.5/drivers/isdn/mISDN/dsp_biquad.h b/ANDROID_3.4.5/drivers/isdn/mISDN/dsp_biquad.h
deleted file mode 100644
index c0c933a5..00000000
--- a/ANDROID_3.4.5/drivers/isdn/mISDN/dsp_biquad.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * SpanDSP - a series of DSP components for telephony
- *
- * biquad.h - General telephony bi-quad section routines (currently this just
- *            handles canonic/type 2 form)
- *
- * Written by Steve Underwood <steveu@coppice.org>
- *
- * Copyright (C) 2001 Steve Underwood
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-struct biquad2_state {
-	int32_t gain;
-	int32_t a1;
-	int32_t a2;
-	int32_t b1;
-	int32_t b2;
-
-	int32_t z1;
-	int32_t z2;
-};
-
-static inline void biquad2_init(struct biquad2_state *bq,
-				int32_t gain, int32_t a1, int32_t a2, int32_t b1, int32_t b2)
-{
-	bq->gain = gain;
-	bq->a1 = a1;
-	bq->a2 = a2;
-	bq->b1 = b1;
-	bq->b2 = b2;
-
-	bq->z1 = 0;
-	bq->z2 = 0;
-}
-
-static inline int16_t biquad2(struct biquad2_state *bq, int16_t sample)
-{
-	int32_t y;
-	int32_t z0;
-
-	z0 = sample * bq->gain + bq->z1 * bq->a1 + bq->z2 * bq->a2;
-	y = z0 + bq->z1 * bq->b1 + bq->z2 * bq->b2;
-
-	bq->z2 = bq->z1;
-	bq->z1 = z0 >> 15;
-	y >>= 15;
-	return  y;
-}