89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/**
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* Copyright (c) 2014-2018 Enzien Audio Ltd.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _SIGNAL_LINE_H_
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#define _SIGNAL_LINE_H_
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#include "HvHeavyInternal.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct SignalLine {
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#if HV_SIMD_AVX
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__m128i n; // remaining samples to target
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#else
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hv_bufferi_t n; // remaining samples to target
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#endif
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hv_bufferf_t x; // current output
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hv_bufferf_t m; // increment
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hv_bufferf_t t; // target value
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} SignalLine;
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hv_size_t sLine_init(SignalLine *o);
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static inline void __hv_line_f(SignalLine *o, hv_bOutf_t bOut) {
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#if HV_SIMD_AVX
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__m128i n = o->n;
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__m128i masklo = _mm_cmplt_epi32(n, _mm_setzero_si128()); // n < 0
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n = _mm_sub_epi32(n, _mm_set1_epi32(4)); // subtract HV_N_SIMD from remaining samples
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__m128i maskhi = _mm_cmplt_epi32(n, _mm_setzero_si128());
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o->n = _mm_sub_epi32(n, _mm_set1_epi32(4));
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__m256 mask = _mm256_insertf128_ps(_mm256_castps128_ps256(_mm_castsi128_ps(masklo)), _mm_castsi128_ps(maskhi), 1);
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__m256 x = o->x;
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*bOut = _mm256_or_ps(_mm256_and_ps(mask, o->t), _mm256_andnot_ps(mask, x));
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// add slope from sloped samples
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o->x = _mm256_add_ps(x, o->m);
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#elif HV_SIMD_SSE
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__m128i n = o->n;
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__m128 mask = _mm_castsi128_ps(_mm_cmplt_epi32(n, _mm_setzero_si128())); // n < 0
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__m128 x = o->x;
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*bOut = _mm_or_ps(_mm_and_ps(mask, o->t), _mm_andnot_ps(mask, x));
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// subtract HV_N_SIMD from remaining samples
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o->n = _mm_sub_epi32(n, _mm_set1_epi32(HV_N_SIMD));
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// add slope from sloped samples
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o->x = _mm_add_ps(x, o->m);
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#elif HV_SIMD_NEON
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int32x4_t n = o->n;
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int32x4_t mask = vreinterpretq_s32_u32(vcltq_s32(n, vdupq_n_s32(0)));
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float32x4_t x = o->x;
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*bOut = vreinterpretq_f32_s32(vorrq_s32(
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vandq_s32(mask, vreinterpretq_s32_f32(o->t)),
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vbicq_s32(vreinterpretq_s32_f32(x), mask)));
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o->n = vsubq_s32(n, vdupq_n_s32(HV_N_SIMD));
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o->x = vaddq_f32(x, o->m);
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#else // HV_SIMD_NONE
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*bOut = (o->n < 0) ? o->t : o->x;
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o->n -= HV_N_SIMD;
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o->x += o->m;
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#endif
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}
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void sLine_onMessage(HeavyContextInterface *_c, SignalLine *o, int letIndex,
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const HvMessage *m, void *sendMessage);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _SIGNAL_LINE_H_
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