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btstack/3rd-party/lc3-google/src/ltpf_arm.h

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/******************************************************************************
*
* Copyright 2022 Google LLC
*
* 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.
*
******************************************************************************/
#if __ARM_FEATURE_SIMD32 && !(__GNUC__ < 10)
#ifndef TEST_ARM
#include <arm_acle.h>
static inline int16x2_t __pkhbt(int16x2_t a, int16x2_t b)
{
int16x2_t r;
__asm("pkhbt %0, %1, %2" : "=r" (r) : "r" (a), "r" (b));
return r;
}
#endif /* TEST_ARM */
/**
* Import
*/
static inline int32_t filter_hp50(struct lc3_ltpf_hp50_state *, int32_t);
static inline float dot(const int16_t *, const int16_t *, int);
/**
* Resample from 8 / 16 / 32 KHz to 12.8 KHz Template
*/
#if !defined(resample_8k_12k8) || !defined(resample_16k_12k8) \
|| !defined(resample_32k_12k8)
static inline void arm_resample_x64k_12k8(const int p, const int16x2_t *h,
struct lc3_ltpf_hp50_state *hp50, const int16x2_t *x, int16_t *y, int n)
{
const int w = 40 / p;
x -= w;
for (int i = 0; i < 5*n; i += 5) {
const int16x2_t *hn = h + (i % (2*p)) * (48 / p);
const int16x2_t *xn = x + (i / (2*p));
int32_t un = __smlad(*(xn++), *(hn++), 0);
for (int k = 0; k < w; k += 5) {
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
}
int32_t yn = filter_hp50(hp50, un);
*(y++) = (yn + (1 << 15)) >> 16;
}
}
#endif
/**
* Resample from 24 / 48 KHz to 12.8 KHz Template
*/
#if !defined(resample_24k_12k8) || !defined(resample_48k_12k8)
static inline void arm_resample_x192k_12k8(const int p, const int16x2_t *h,
struct lc3_ltpf_hp50_state *hp50, const int16x2_t *x, int16_t *y, int n)
{
const int w = 120 / p;
x -= w;
for (int i = 0; i < 15*n; i += 15) {
const int16x2_t *hn = h + (i % (2*p)) * (128 / p);
const int16x2_t *xn = x + (i / (2*p));
int32_t un = __smlad(*(xn++), *(hn++), 0);
for (int k = 0; k < w; k += 15) {
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
un = __smlad(*(xn++), *(hn++), un);
}
int32_t yn = filter_hp50(hp50, un);
*(y++) = (yn + (1 << 15)) >> 16;
}
}
#endif
/**
* Resample from 8 Khz to 12.8 KHz
*/
#ifndef resample_8k_12k8
#define resample_8k_12k8 arm_resample_8k_12k8
static void arm_resample_8k_12k8(
struct lc3_ltpf_hp50_state *hp50, const int16_t *x, int16_t *y, int n)
{
static const int16_t alignas(int32_t) h[2*8*12] = {
0, 214, 417, -1052, -4529, 26233, -4529, -1052, 417, 214, 0, 0,
0, 180, 0, -1522, -2427, 24506, -5289, 0, 763, 156, -28, 0,
0, 92, -323, -1361, 0, 19741, -3885, 1317, 861, 0, -61, 0,
0, 0, -457, -752, 1873, 13068, 0, 2389, 598, -213, -79, 0,
0, -61, -398, 0, 2686, 5997, 5997, 2686, 0, -398, -61, 0,
0, -79, -213, 598, 2389, 0, 13068, 1873, -752, -457, 0, 0,
0, -61, 0, 861, 1317, -3885, 19741, 0, -1361, -323, 92, 0,
0, -28, 156, 763, 0, -5289, 24506, -2427, -1522, 0, 180, 0,
0, 0, 214, 417, -1052, -4529, 26233, -4529, -1052, 417, 214, 0,
0, 0, 180, 0, -1522, -2427, 24506, -5289, 0, 763, 156, -28,
0, 0, 92, -323, -1361, 0, 19741, -3885, 1317, 861, 0, -61,
0, 0, 0, -457, -752, 1873, 13068, 0, 2389, 598, -213, -79,
0, 0, -61, -398, 0, 2686, 5997, 5997, 2686, 0, -398, -61,
0, 0, -79, -213, 598, 2389, 0, 13068, 1873, -752, -457, 0,
0, 0, -61, 0, 861, 1317, -3885, 19741, 0, -1361, -323, 92,
0, 0, -28, 156, 763, 0, -5289, 24506, -2427, -1522, 0, 180,
};
arm_resample_x64k_12k8(
8, (const int16x2_t *)h, hp50, (int16x2_t *)x, y, n);
}
#endif /* resample_8k_12k8 */
/**
* Resample from 16 Khz to 12.8 KHz
*/
#ifndef resample_16k_12k8
#define resample_16k_12k8 arm_resample_16k_12k8
static void arm_resample_16k_12k8(
struct lc3_ltpf_hp50_state *hp50, const int16_t *x, int16_t *y, int n)
{
static const int16_t alignas(int32_t) h[2*4*24] = {
0, -61, 214, -398, 417, 0, -1052, 2686,
-4529, 5997, 26233, 5997, -4529, 2686, -1052, 0,
417, -398, 214, -61, 0, 0, 0, 0,
0, -79, 180, -213, 0, 598, -1522, 2389,
-2427, 0, 24506, 13068, -5289, 1873, 0, -752,
763, -457, 156, 0, -28, 0, 0, 0,
0, -61, 92, 0, -323, 861, -1361, 1317,
0, -3885, 19741, 19741, -3885, 0, 1317, -1361,
861, -323, 0, 92, -61, 0, 0, 0,
0, -28, 0, 156, -457, 763, -752, 0,
1873, -5289, 13068, 24506, 0, -2427, 2389, -1522,
598, 0, -213, 180, -79, 0, 0, 0,
0, 0, -61, 214, -398, 417, 0, -1052,
2686, -4529, 5997, 26233, 5997, -4529, 2686, -1052,
0, 417, -398, 214, -61, 0, 0, 0,
0, 0, -79, 180, -213, 0, 598, -1522,
2389, -2427, 0, 24506, 13068, -5289, 1873, 0,
-752, 763, -457, 156, 0, -28, 0, 0,
0, 0, -61, 92, 0, -323, 861, -1361,
1317, 0, -3885, 19741, 19741, -3885, 0, 1317,
-1361, 861, -323, 0, 92, -61, 0, 0,
0, 0, -28, 0, 156, -457, 763, -752,
0, 1873, -5289, 13068, 24506, 0, -2427, 2389,
-1522, 598, 0, -213, 180, -79, 0, 0,
};
arm_resample_x64k_12k8(
4, (const int16x2_t *)h, hp50, (int16x2_t *)x, y, n);
}
#endif /* resample_16k_12k8 */
/**
* Resample from 32 Khz to 12.8 KHz
*/
#ifndef resample_32k_12k8
#define resample_32k_12k8 arm_resample_32k_12k8
static void arm_resample_32k_12k8(
struct lc3_ltpf_hp50_state *hp50, const int16_t *x, int16_t *y, int n)
{
static const int16_t alignas(int32_t) h[2*2*48] = {
0, -30, -31, 46, 107, 0, -199, -162,
209, 430, 0, -681, -526, 658, 1343, 0,
-2264, -1943, 2999, 9871, 13116, 9871, 2999, -1943,
-2264, 0, 1343, 658, -526, -681, 0, 430,
209, -162, -199, 0, 107, 46, -31, -30,
0, 0, 0, 0, 0, 0, 0, 0,
0, -14, -39, 0, 90, 78, -106, -229,
0, 382, 299, -376, -761, 0, 1194, 937,
-1214, -2644, 0, 6534, 12253, 12253, 6534, 0,
-2644, -1214, 937, 1194, 0, -761, -376, 299,
382, 0, -229, -106, 78, 90, 0, -39,
-14, 0, 0, 0, 0, 0, 0, 0,
0, 0, -30, -31, 46, 107, 0, -199,
-162, 209, 430, 0, -681, -526, 658, 1343,
0, -2264, -1943, 2999, 9871, 13116, 9871, 2999,
-1943, -2264, 0, 1343, 658, -526, -681, 0,
430, 209, -162, -199, 0, 107, 46, -31,
-30, 0, 0, 0, 0, 0, 0, 0,
0, 0, -14, -39, 0, 90, 78, -106,
-229, 0, 382, 299, -376, -761, 0, 1194,
937, -1214, -2644, 0, 6534, 12253, 12253, 6534,
0, -2644, -1214, 937, 1194, 0, -761, -376,
299, 382, 0, -229, -106, 78, 90, 0,
-39, -14, 0, 0, 0, 0, 0, 0,
};
arm_resample_x64k_12k8(
2, (const int16x2_t *)h, hp50, (int16x2_t *)x, y, n);
}
#endif /* resample_32k_12k8 */
/**
* Resample from 24 Khz to 12.8 KHz
*/
#ifndef resample_24k_12k8
#define resample_24k_12k8 arm_resample_24k_12k8
static void arm_resample_24k_12k8(
struct lc3_ltpf_hp50_state *hp50, const int16_t *x, int16_t *y, int n)
{
static const int16_t alignas(int32_t) h[2*8*32] = {
0, -50, 19, 143, -93, -290, 278, 485,
-658, -701, 1396, 901, -3019, -1042, 10276, 17488,
10276, -1042, -3019, 901, 1396, -701, -658, 485,
278, -290, -93, 143, 19, -50, 0, 0,
0, -46, 0, 141, -45, -305, 185, 543,
-501, -854, 1153, 1249, -2619, -1908, 8712, 17358,
11772, 0, -3319, 480, 1593, -504, -796, 399,
367, -261, -142, 138, 40, -52, -5, 0,
0, -41, -17, 133, 0, -304, 91, 574,
-334, -959, 878, 1516, -2143, -2590, 7118, 16971,
13161, 1202, -3495, 0, 1731, -267, -908, 287,
445, -215, -188, 125, 62, -52, -12, 0,
0, -34, -30, 120, 41, -291, 0, 577,
-164, -1015, 585, 1697, -1618, -3084, 5534, 16337,
14406, 2544, -3526, -523, 1800, 0, -985, 152,
509, -156, -230, 104, 83, -48, -19, 0,
0, -26, -41, 103, 76, -265, -83, 554,
0, -1023, 288, 1791, -1070, -3393, 3998, 15474,
15474, 3998, -3393, -1070, 1791, 288, -1023, 0,
554, -83, -265, 76, 103, -41, -26, 0,
0, -19, -48, 83, 104, -230, -156, 509,
152, -985, 0, 1800, -523, -3526, 2544, 14406,
16337, 5534, -3084, -1618, 1697, 585, -1015, -164,
577, 0, -291, 41, 120, -30, -34, 0,
0, -12, -52, 62, 125, -188, -215, 445,
287, -908, -267, 1731, 0, -3495, 1202, 13161,
16971, 7118, -2590, -2143, 1516, 878, -959, -334,
574, 91, -304, 0, 133, -17, -41, 0,
0, -5, -52, 40, 138, -142, -261, 367,
399, -796, -504, 1593, 480, -3319, 0, 11772,
17358, 8712, -1908, -2619, 1249, 1153, -854, -501,
543, 185, -305, -45, 141, 0, -46, 0,
0, 0, -50, 19, 143, -93, -290, 278,
485, -658, -701, 1396, 901, -3019, -1042, 10276,
17488, 10276, -1042, -3019, 901, 1396, -701, -658,
485, 278, -290, -93, 143, 19, -50, 0,
0, 0, -46, 0, 141, -45, -305, 185,
543, -501, -854, 1153, 1249, -2619, -1908, 8712,
17358, 11772, 0, -3319, 480, 1593, -504, -796,
399, 367, -261, -142, 138, 40, -52, -5,
0, 0, -41, -17, 133, 0, -304, 91,
574, -334, -959, 878, 1516, -2143, -2590, 7118,
16971, 13161, 1202, -3495, 0, 1731, -267, -908,
287, 445, -215, -188, 125, 62, -52, -12,
0, 0, -34, -30, 120, 41, -291, 0,
577, -164, -1015, 585, 1697, -1618, -3084, 5534,
16337, 14406, 2544, -3526, -523, 1800, 0, -985,
152, 509, -156, -230, 104, 83, -48, -19,
0, 0, -26, -41, 103, 76, -265, -83,
554, 0, -1023, 288, 1791, -1070, -3393, 3998,
15474, 15474, 3998, -3393, -1070, 1791, 288, -1023,
0, 554, -83, -265, 76, 103, -41, -26,
0, 0, -19, -48, 83, 104, -230, -156,
509, 152, -985, 0, 1800, -523, -3526, 2544,
14406, 16337, 5534, -3084, -1618, 1697, 585, -1015,
-164, 577, 0, -291, 41, 120, -30, -34,
0, 0, -12, -52, 62, 125, -188, -215,
445, 287, -908, -267, 1731, 0, -3495, 1202,
13161, 16971, 7118, -2590, -2143, 1516, 878, -959,
-334, 574, 91, -304, 0, 133, -17, -41,
0, 0, -5, -52, 40, 138, -142, -261,
367, 399, -796, -504, 1593, 480, -3319, 0,
11772, 17358, 8712, -1908, -2619, 1249, 1153, -854,
-501, 543, 185, -305, -45, 141, 0, -46,
};
arm_resample_x192k_12k8(
8, (const int16x2_t *)h, hp50, (int16x2_t *)x, y, n);
}
#endif /* resample_24k_12k8 */
/**
* Resample from 48 Khz to 12.8 KHz
*/
#ifndef resample_48k_12k8
#define resample_48k_12k8 arm_resample_48k_12k8
static void arm_resample_48k_12k8(
struct lc3_ltpf_hp50_state *hp50, const int16_t *x, int16_t *y, int n)
{
static const int16_t alignas(int32_t) h[2*4*64] = {
0, -13, -25, -20, 10, 51, 71, 38,
-47, -133, -145, -42, 139, 277, 242, 0,
-329, -511, -351, 144, 698, 895, 450, -535,
-1510, -1697, -521, 1999, 5138, 7737, 8744, 7737,
5138, 1999, -521, -1697, -1510, -535, 450, 895,
698, 144, -351, -511, -329, 0, 242, 277,
139, -42, -145, -133, -47, 38, 71, 51,
10, -20, -25, -13, 0, 0, 0, 0,
0, -9, -23, -24, 0, 41, 71, 52,
-23, -115, -152, -78, 92, 254, 272, 76,
-251, -493, -427, 0, 576, 900, 624, -262,
-1309, -1763, -954, 1272, 4356, 7203, 8679, 8169,
5886, 2767, 0, -1542, -1660, -809, 240, 848,
796, 292, -252, -507, -398, -82, 199, 288,
183, 0, -130, -145, -71, 20, 69, 60,
20, -15, -26, -17, -3, 0, 0, 0,
0, -6, -20, -26, -8, 31, 67, 62,
0, -94, -152, -108, 45, 223, 287, 143,
-167, -454, -480, -134, 439, 866, 758, 0,
-1071, -1748, -1295, 601, 3559, 6580, 8485, 8485,
6580, 3559, 601, -1295, -1748, -1071, 0, 758,
866, 439, -134, -480, -454, -167, 143, 287,
223, 45, -108, -152, -94, 0, 62, 67,
31, -8, -26, -20, -6, 0, 0, 0,
0, -3, -17, -26, -15, 20, 60, 69,
20, -71, -145, -130, 0, 183, 288, 199,
-82, -398, -507, -252, 292, 796, 848, 240,
-809, -1660, -1542, 0, 2767, 5886, 8169, 8679,
7203, 4356, 1272, -954, -1763, -1309, -262, 624,
900, 576, 0, -427, -493, -251, 76, 272,
254, 92, -78, -152, -115, -23, 52, 71,
41, 0, -24, -23, -9, 0, 0, 0,
0, 0, -13, -25, -20, 10, 51, 71,
38, -47, -133, -145, -42, 139, 277, 242,
0, -329, -511, -351, 144, 698, 895, 450,
-535, -1510, -1697, -521, 1999, 5138, 7737, 8744,
7737, 5138, 1999, -521, -1697, -1510, -535, 450,
895, 698, 144, -351, -511, -329, 0, 242,
277, 139, -42, -145, -133, -47, 38, 71,
51, 10, -20, -25, -13, 0, 0, 0,
0, 0, -9, -23, -24, 0, 41, 71,
52, -23, -115, -152, -78, 92, 254, 272,
76, -251, -493, -427, 0, 576, 900, 624,
-262, -1309, -1763, -954, 1272, 4356, 7203, 8679,
8169, 5886, 2767, 0, -1542, -1660, -809, 240,
848, 796, 292, -252, -507, -398, -82, 199,
288, 183, 0, -130, -145, -71, 20, 69,
60, 20, -15, -26, -17, -3, 0, 0,
0, 0, -6, -20, -26, -8, 31, 67,
62, 0, -94, -152, -108, 45, 223, 287,
143, -167, -454, -480, -134, 439, 866, 758,
0, -1071, -1748, -1295, 601, 3559, 6580, 8485,
8485, 6580, 3559, 601, -1295, -1748, -1071, 0,
758, 866, 439, -134, -480, -454, -167, 143,
287, 223, 45, -108, -152, -94, 0, 62,
67, 31, -8, -26, -20, -6, 0, 0,
0, 0, -3, -17, -26, -15, 20, 60,
69, 20, -71, -145, -130, 0, 183, 288,
199, -82, -398, -507, -252, 292, 796, 848,
240, -809, -1660, -1542, 0, 2767, 5886, 8169,
8679, 7203, 4356, 1272, -954, -1763, -1309, -262,
624, 900, 576, 0, -427, -493, -251, 76,
272, 254, 92, -78, -152, -115, -23, 52,
71, 41, 0, -24, -23, -9, 0, 0,
};
arm_resample_x192k_12k8(
4, (const int16x2_t *)h, hp50, (int16x2_t *)x, y, n);
}
#endif /* resample_48k_12k8 */
/**
* Return vector of correlations
*/
#ifndef correlate
#define correlate arm_correlate
static void arm_correlate(
const int16_t *a, const int16_t *b, int n, float *y, int nc)
{
/* --- Check alignment of `b` --- */
if ((uintptr_t)b & 3)
*(y++) = dot(a, b--, n), nc--;
/* --- Processing by pair --- */
for ( ; nc >= 2; nc -= 2) {
const int16x2_t *an = (const int16x2_t *)(a );
const int16x2_t *bn = (const int16x2_t *)(b--);
int16x2_t ax, b0, b1;
int64_t v0 = 0, v1 = 0;
b1 = (int16x2_t)*(b--) << 16;
for (int i = 0; i < (n >> 4); i++ )
for (int j = 0; j < 4; j++) {
ax = *(an++), b0 = *(bn++);
v0 = __smlald (ax, b0, v0);
v1 = __smlaldx(ax, __pkhbt(b0, b1), v1);
ax = *(an++), b1 = *(bn++);
v0 = __smlald (ax, b1, v0);
v1 = __smlaldx(ax, __pkhbt(b1, b0), v1);
}
*(y++) = (float)((int32_t)((v0 + (1 << 5)) >> 6));
*(y++) = (float)((int32_t)((v1 + (1 << 5)) >> 6));
}
/* --- Odd element count --- */
if (nc > 0)
*(y++) = dot(a, b, n);
}
#endif /* correlate */
#endif /* __ARM_FEATURE_SIMD32 */
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