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author | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 01:16:53 -0700 |
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committer | Jean-Marc Valin <jmvalin@jmvalin.ca> | 2011-09-16 01:16:53 -0700 |
commit | 1c2f5633d101c08b5ef8095a8682d3d52cbd952d (patch) | |
tree | 66f80e67f075db5fa5233759a89f475d8bedade2 /silk/resampler_rom.h | |
parent | fb3a437c9dabb4aafe4a3927158161590ed745ab (diff) | |
download | opus-1c2f5633d101c08b5ef8095a8682d3d52cbd952d.tar.gz |
Removed all the silk_ prefixes in source file names (not symbols)
Diffstat (limited to 'silk/resampler_rom.h')
-rw-r--r-- | silk/resampler_rom.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/silk/resampler_rom.h b/silk/resampler_rom.h new file mode 100644 index 00000000..4cd13d91 --- /dev/null +++ b/silk/resampler_rom.h @@ -0,0 +1,79 @@ +/*********************************************************************** +Copyright (c) 2006-2011, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +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 Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE. 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. +***********************************************************************/ + +#ifndef _SILK_FIX_RESAMPLER_ROM_H_ +#define _SILK_FIX_RESAMPLER_ROM_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "typedef.h" +#include "resampler_structs.h" + +#define RESAMPLER_DOWN_ORDER_FIR 16 +#define RESAMPLER_ORDER_FIR_144 6 + + +/* Tables for 2x downsampler. Values above 32767 intentionally wrap to a negative value. */ +extern const opus_int16 silk_resampler_down2_0; +extern const opus_int16 silk_resampler_down2_1; + +/* Tables for 2x upsampler, low quality. Values above 32767 intentionally wrap to a negative value. */ +extern const opus_int16 silk_resampler_up2_lq_0; +extern const opus_int16 silk_resampler_up2_lq_1; + +/* Tables for 2x upsampler, high quality. Values above 32767 intentionally wrap to a negative value. */ +extern const opus_int16 silk_resampler_up2_hq_0[ 2 ]; +extern const opus_int16 silk_resampler_up2_hq_1[ 2 ]; +extern const opus_int16 silk_resampler_up2_hq_notch[ 4 ]; + +/* Tables with IIR and FIR coefficients for fractional downsamplers */ +extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR / 2 ]; +extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR / 2 ]; +extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR / 2 ]; +extern const opus_int16 silk_Resampler_3_8_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR / 2 ]; +extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 + RESAMPLER_DOWN_ORDER_FIR / 2 ]; +extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ]; +extern const opus_int16 silk_Resampler_1_3_COEFS_LQ[ 2 + 3 ]; + +/* Tables with coefficients for 4th order ARMA filter */ +extern const opus_int16 silk_Resampler_320_441_ARMA4_COEFS[ 7 ]; +extern const opus_int16 silk_Resampler_240_441_ARMA4_COEFS[ 7 ]; +extern const opus_int16 silk_Resampler_160_441_ARMA4_COEFS[ 7 ]; +extern const opus_int16 silk_Resampler_120_441_ARMA4_COEFS[ 7 ]; +extern const opus_int16 silk_Resampler_80_441_ARMA4_COEFS[ 7 ]; + +/* Table with interplation fractions of 1/288 : 2/288 : 287/288 (432 Words) */ +extern const opus_int16 silk_resampler_frac_FIR_144[ 144 ][ RESAMPLER_ORDER_FIR_144 / 2 ]; + +#ifdef __cplusplus +} +#endif + +#endif /* _SILK_FIX_RESAMPLER_ROM_H_*/ |