esp-idf/components/bt/bluedroid/external/sbc/decoder/srce/synthesis-8-generated.c

/******************************************************************************
 *
 *  Copyright (C) 2014 The Android Open Source Project
 *  Copyright 2003 - 2004 Open Interface North America, Inc. All rights reserved.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

/**
 @file

 DO NOT EDIT THIS FILE DIRECTLY

 This file is automatically generated by the "synthesis-gen.pl" script.
 Any changes to this generated file will be lost when the script is re-run.

 These functions are called by functions in synthesis.c to perform the synthesis
 filterbank computations for the SBC decoder.


 */
#include "bt_target.h"
#include <oi_codec_sbc_private.h>

#if (defined(SBC_DEC_INCLUDED) && SBC_DEC_INCLUDED == TRUE)

#ifndef CLIP_INT16
#define CLIP_INT16(x) do { if (x > OI_INT16_MAX) { x = OI_INT16_MAX; } else if (x < OI_INT16_MIN) { x = OI_INT16_MIN; } } while (0)
#endif

#define MUL_16S_16S(_x, _y) ((_x) * (_y))

PRIVATE void SynthWindow80_generated(OI_INT16 *pcm, SBC_BUFFER_T const *RESTRICT buffer, OI_UINT strideShift)
{
    OI_INT32 pcm_a, pcm_b;
    /* 1 - stage 0 */ pcm_b = 0;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(8235, buffer[ 12])) >> 3;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(-23167, buffer[ 20])) >> 3;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(26479, buffer[ 28])) >> 2;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(-17397, buffer[ 36])) << 1;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(9399, buffer[ 44])) << 3;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(17397, buffer[ 52])) << 1;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(26479, buffer[ 60])) >> 2;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(23167, buffer[ 68])) >> 3;
    /* 1 - stage 0 */ pcm_b += (MUL_16S_16S(8235, buffer[ 76])) >> 3;
    /* 1 - stage 0 */ pcm_b /= 32768; CLIP_INT16(pcm_b); pcm[0 << strideShift] = (OI_INT16)pcm_b;
    /* 1 - stage 1 */ pcm_a = 0;
    /* 1 - stage 1 */ pcm_b = 0;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(-3263, buffer[  5])) >> 5;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(9293, buffer[  5])) >> 3;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(29293, buffer[ 11])) >> 5;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(-6087, buffer[ 11])) >> 2;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(-5229, buffer[ 21]));
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(1247, buffer[ 21])) << 3;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(30835, buffer[ 27])) >> 3;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(-2893, buffer[ 27])) << 3;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(-27021, buffer[ 37])) << 1;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(23671, buffer[ 37])) << 2;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(31633, buffer[ 43])) << 1;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(18055, buffer[ 43])) << 1;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(17319, buffer[ 53])) << 1;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(11537, buffer[ 53])) >> 1;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(26663, buffer[ 59])) >> 2;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(1747, buffer[ 59])) << 1;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(4555, buffer[ 69])) >> 1;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(685, buffer[ 69])) << 1;
    /* 1 - stage 1 */ pcm_a += (MUL_16S_16S(12419, buffer[ 75])) >> 4;
    /* 1 - stage 1 */ pcm_b += (MUL_16S_16S(8721, buffer[ 75])) >> 7;
    /* 1 - stage 1 */ pcm_a /= 32768; CLIP_INT16(pcm_a); pcm[1 << strideShift] = (OI_INT16)pcm_a;
    /* 1 - stage 1 */ pcm_b /= 32768; CLIP_INT16(pcm_b); pcm[7 << strideShift] = (OI_INT16)pcm_b;
    /* 1 - stage 2 */ pcm_a = 0;
    /* 1 - stage 2 */ pcm_b = 0;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(-10385, buffer[  6])) >> 6;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(11167, buffer[  6])) >> 4;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(24995, buffer[ 10])) >> 5;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(-10337, buffer[ 10])) >> 4;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(-309, buffer[ 22])) << 4;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(1917, buffer[ 22])) << 2;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(9161, buffer[ 26])) >> 3;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(-30605, buffer[ 26])) >> 1;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(-23063, buffer[ 38])) << 1;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(8317, buffer[ 38])) << 3;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(27561, buffer[ 42])) << 1;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(9553, buffer[ 42])) << 2;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(2309, buffer[ 54])) << 3;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(22117, buffer[ 54])) >> 4;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(12705, buffer[ 58])) >> 1;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(16383, buffer[ 58])) >> 2;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(6239, buffer[ 70])) >> 3;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(7543, buffer[ 70])) >> 3;
    /* 1 - stage 2 */ pcm_a += (MUL_16S_16S(9251, buffer[ 74])) >> 4;
    /* 1 - stage 2 */ pcm_b += (MUL_16S_16S(8603, buffer[ 74])) >> 6;
    /* 1 - stage 2 */ pcm_a /= 32768; CLIP_INT16(pcm_a); pcm[2 << strideShift] = (OI_INT16)pcm_a;
    /* 1 - stage 2 */ pcm_b /= 32768; CLIP_INT16(pcm_b); pcm[6 << strideShift] = (OI_INT16)pcm_b;
    /* 1 - stage 3 */ pcm_a = 0;
    /* 1 - stage 3 */ pcm_b = 0;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(-16457, buffer[  7])) >> 6;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(16913, buffer[  7])) >> 5;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(19083, buffer[  9])) >> 5;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(-8443, buffer[  9])) >> 7;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(-23641, buffer[ 23])) >> 2;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(3687, buffer[ 23])) << 1;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(-29015, buffer[ 25])) >> 4;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(-301, buffer[ 25])) << 5;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(-12889, buffer[ 39])) << 2;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(15447, buffer[ 39])) << 2;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(6145, buffer[ 41])) << 3;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(10255, buffer[ 41])) << 2;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(24211, buffer[ 55])) >> 1;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(-18233, buffer[ 55])) >> 3;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(23469, buffer[ 57])) >> 2;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(9405, buffer[ 57])) >> 1;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(21223, buffer[ 71])) >> 8;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(1499, buffer[ 71])) >> 1;
    /* 1 - stage 3 */ pcm_a += (MUL_16S_16S(26913, buffer[ 73])) >> 6;
    /* 1 - stage 3 */ pcm_b += (MUL_16S_16S(26189, buffer[ 73])) >> 7;
    /* 1 - stage 3 */ pcm_a /= 32768; CLIP_INT16(pcm_a); pcm[3 << strideShift] = (OI_INT16)pcm_a;
    /* 1 - stage 3 */ pcm_b /= 32768; CLIP_INT16(pcm_b); pcm[5 << strideShift] = (OI_INT16)pcm_b;
    /* 1 - stage 4 */ pcm_a = 0;
    /* 1 - stage 4 */ pcm_a += (MUL_16S_16S(10445, buffer[  8])) >> 4;
    /* 1 - stage 4 */ pcm_a += (MUL_16S_16S(-5297, buffer[ 24])) << 1;
    /* 1 - stage 4 */ pcm_a += (MUL_16S_16S(22299, buffer[ 40])) << 2;
    /* 1 - stage 4 */ pcm_a += (MUL_16S_16S(10603, buffer[ 56]));
    /* 1 - stage 4 */ pcm_a += (MUL_16S_16S(9539, buffer[ 72])) >> 4;
    /* 1 - stage 4 */ pcm_a /= 32768; CLIP_INT16(pcm_a); pcm[4 << strideShift] = (OI_INT16)pcm_a;
}

#endif /* #if (defined(SBC_DEC_INCLUDED) && SBC_DEC_INCLUDED == TRUE) */