mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
a35bcd032f
Update files to match the opus-1.0.0 source release. This corresponds to the spec implementation included in RFC 6716. Changes from the previous in-tree version (draft-12): - Add extern "C" protection on opus_multistream.h. - Align to sizeof(void*) instead of 4 bytes. - Copyright header updates for IETF publication. - Minor documentation and whitespace fixes.
109 lines
5.0 KiB
C
109 lines
5.0 KiB
C
/***********************************************************************
|
|
Copyright (c) 2006-2012 IETF Trust and Skype Limited. All rights reserved.
|
|
|
|
This file is extracted from RFC6716. Please see that RFC for additional
|
|
information.
|
|
|
|
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
|
|
|
|
/* Filter coefficients for IIR/FIR polyphase resampling *
|
|
* Total size: 179 Words (358 Bytes) */
|
|
|
|
#include "resampler_private.h"
|
|
|
|
/* Tables for 2x downsampler */
|
|
const opus_int16 silk_resampler_down2_0 = 9872;
|
|
const opus_int16 silk_resampler_down2_1 = 39809 - 65536;
|
|
|
|
/* Tables for 2x upsampler, high quality */
|
|
const opus_int16 silk_resampler_up2_hq_0[ 3 ] = { 1746, 14986, 39083 - 65536 };
|
|
const opus_int16 silk_resampler_up2_hq_1[ 3 ] = { 6854, 25769, 55542 - 65536 };
|
|
|
|
/* Matlab code for the notch filter coefficients: */
|
|
/* B = [1, 0.147, 1]; A = [1, 0.107, 0.89]; G = 0.93; freqz(G * B, A, 2^14, 16e3); axis([0, 8000, -10, 1]) */
|
|
/* fprintf('\t%6d, %6d, %6d, %6d\n', round(B(2)*2^16), round(-A(2)*2^16), round((1-A(3))*2^16), round(G*2^15)) */
|
|
const opus_int16 silk_resampler_up2_hq_notch[ 4 ] = { 9634, -7012, 7209, 30474 };
|
|
|
|
/* Tables with IIR and FIR coefficients for fractional downsamplers (123 Words) */
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ] = {
|
|
-20694, -13867,
|
|
-49, 64, 17, -157, 353, -496, 163, 11047, 22205,
|
|
-39, 6, 91, -170, 186, 23, -896, 6336, 19928,
|
|
-19, -36, 102, -89, -24, 328, -951, 2568, 15909,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ] = {
|
|
-14457, -14019,
|
|
64, 128, -122, 36, 310, -768, 584, 9267, 17733,
|
|
12, 128, 18, -142, 288, -117, -865, 4123, 14459,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR1 / 2 ] = {
|
|
616, -14323,
|
|
-10, 39, 58, -46, -84, 120, 184, -315, -541, 1284, 5380, 9024,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ] = {
|
|
16102, -15162,
|
|
-13, 0, 20, 26, 5, -31, -43, -4, 65, 90, 7, -157, -248, -44, 593, 1583, 2612, 3271,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_1_4_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ] = {
|
|
22500, -15099,
|
|
3, -14, -20, -15, 2, 25, 37, 25, -16, -71, -107, -79, 50, 292, 623, 982, 1288, 1464,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_1_6_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR2 / 2 ] = {
|
|
27540, -15257,
|
|
17, 12, 8, 1, -10, -22, -30, -32, -22, 3, 44, 100, 168, 243, 317, 381, 429, 455,
|
|
};
|
|
|
|
silk_DWORD_ALIGN const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ] = {
|
|
-2797, -6507,
|
|
4697, 10739,
|
|
1567, 8276,
|
|
};
|
|
|
|
/* Table with interplation fractions of 1/24, 3/24, 5/24, ... , 23/24 : 23/24 (46 Words) */
|
|
silk_DWORD_ALIGN const opus_int16 silk_resampler_frac_FIR_12[ 12 ][ RESAMPLER_ORDER_FIR_12 / 2 ] = {
|
|
{ 189, -600, 617, 30567 },
|
|
{ 117, -159, -1070, 29704 },
|
|
{ 52, 221, -2392, 28276 },
|
|
{ -4, 529, -3350, 26341 },
|
|
{ -48, 758, -3956, 23973 },
|
|
{ -80, 905, -4235, 21254 },
|
|
{ -99, 972, -4222, 18278 },
|
|
{ -107, 967, -3957, 15143 },
|
|
{ -103, 896, -3487, 11950 },
|
|
{ -91, 773, -2865, 8798 },
|
|
{ -71, 611, -2143, 5784 },
|
|
{ -46, 425, -1375, 2996 },
|
|
};
|