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authorhairball <xhairball@gmail.com>2014-02-08 03:21:02 +0000
committerTim Angus <tim@ngus.net>2014-06-17 17:43:38 +0100
commit35064811c0ac104acddd7777e00bfd9e054c2db6 (patch)
tree4063389141542093ecc3de47e3999ed099520621 /src/opus-1.0.2/silk/bwexpander.c
parent1778f3fb8cabe7400011c84331018b0ebf6a44b1 (diff)
Upgrade opus 1.0.2 -> 1.1
Diffstat (limited to 'src/opus-1.0.2/silk/bwexpander.c')
-rw-r--r--src/opus-1.0.2/silk/bwexpander.c51
1 files changed, 0 insertions, 51 deletions
diff --git a/src/opus-1.0.2/silk/bwexpander.c b/src/opus-1.0.2/silk/bwexpander.c
deleted file mode 100644
index 77ea1163..00000000
--- a/src/opus-1.0.2/silk/bwexpander.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/***********************************************************************
-Copyright (c) 2006-2011, Skype Limited. All rights reserved.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-- Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
-- Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-- Neither the name of Internet Society, IETF or IETF Trust, nor the
-names of specific contributors, may be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-***********************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "SigProc_FIX.h"
-
-/* Chirp (bandwidth expand) LP AR filter */
-void silk_bwexpander(
- opus_int16 *ar, /* I/O AR filter to be expanded (without leading 1) */
- const opus_int d, /* I Length of ar */
- opus_int32 chirp_Q16 /* I Chirp factor (typically in the range 0 to 1) */
-)
-{
- opus_int i;
- opus_int32 chirp_minus_one_Q16 = chirp_Q16 - 65536;
-
- /* NB: Dont use silk_SMULWB, instead of silk_RSHIFT_ROUND( silk_MUL(), 16 ), below. */
- /* Bias in silk_SMULWB can lead to unstable filters */
- for( i = 0; i < d - 1; i++ ) {
- ar[ i ] = (opus_int16)silk_RSHIFT_ROUND( silk_MUL( chirp_Q16, ar[ i ] ), 16 );
- chirp_Q16 += silk_RSHIFT_ROUND( silk_MUL( chirp_Q16, chirp_minus_one_Q16 ), 16 );
- }
- ar[ d - 1 ] = (opus_int16)silk_RSHIFT_ROUND( silk_MUL( chirp_Q16, ar[ d - 1 ] ), 16 );
-}