The Tor Browser: media/libopus/silk/resampler

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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     2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.

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    15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

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    24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

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    26 ***********************************************************************/

    28 #ifndef SILK_FIX_RESAMPLER_ROM_H

    29 #define SILK_FIX_RESAMPLER_ROM_H

    31 #ifdef  __cplusplus

    32 extern "C"

    33 {

    34 #endif

    36 #include "typedef.h"

    37 #include "resampler_structs.h"

    39 #define RESAMPLER_DOWN_ORDER_FIR0               18

    40 #define RESAMPLER_DOWN_ORDER_FIR1               24

    41 #define RESAMPLER_DOWN_ORDER_FIR2               36

    42 #define RESAMPLER_ORDER_FIR_12                  8

    44 /* Tables for 2x downsampler */

    45 static const opus_int16 silk_resampler_down2_0 = 9872;

    46 static const opus_int16 silk_resampler_down2_1 = 39809 - 65536;

    48 /* Tables for 2x upsampler, high quality */

    49 static const opus_int16 silk_resampler_up2_hq_0[ 3 ] = { 1746, 14986, 39083 - 65536 };

    50 static const opus_int16 silk_resampler_up2_hq_1[ 3 ] = { 6854, 25769, 55542 - 65536 };

    52 /* Tables with IIR and FIR coefficients for fractional downsamplers */

    53 extern const opus_int16 silk_Resampler_3_4_COEFS[ 2 + 3 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ];

    54 extern const opus_int16 silk_Resampler_2_3_COEFS[ 2 + 2 * RESAMPLER_DOWN_ORDER_FIR0 / 2 ];

    55 extern const opus_int16 silk_Resampler_1_2_COEFS[ 2 +     RESAMPLER_DOWN_ORDER_FIR1 / 2 ];

    56 extern const opus_int16 silk_Resampler_1_3_COEFS[ 2 +     RESAMPLER_DOWN_ORDER_FIR2 / 2 ];

    57 extern const opus_int16 silk_Resampler_1_4_COEFS[ 2 +     RESAMPLER_DOWN_ORDER_FIR2 / 2 ];

    58 extern const opus_int16 silk_Resampler_1_6_COEFS[ 2 +     RESAMPLER_DOWN_ORDER_FIR2 / 2 ];

    59 extern const opus_int16 silk_Resampler_2_3_COEFS_LQ[ 2 + 2 * 2 ];

    61 /* Table with interplation fractions of 1/24, 3/24, ..., 23/24 */

    62 extern const opus_int16 silk_resampler_frac_FIR_12[ 12 ][ RESAMPLER_ORDER_FIR_12 / 2 ];

    64 #ifdef  __cplusplus

    65 }

    66 #endif

    68 #endif /* SILK_FIX_RESAMPLER_ROM_H */

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