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Diffstat (limited to 'src/opus-1.0.2/silk/resampler_rom.c')
| -rw-r--r-- | src/opus-1.0.2/silk/resampler_rom.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/src/opus-1.0.2/silk/resampler_rom.c b/src/opus-1.0.2/silk/resampler_rom.c deleted file mode 100644 index b50af2e2..00000000 --- a/src/opus-1.0.2/silk/resampler_rom.c +++ /dev/null @@ -1,96 +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 - -/* Filter coefficients for IIR/FIR polyphase resampling * - * Total size: 179 Words (358 Bytes) */ - -#include "resampler_private.h" - -/* 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 }, -}; |