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91 lines
3 KiB
C
91 lines
3 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include "fmt-ops.h"
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#include <tmmintrin.h>
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static void
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conv_s24_to_f32d_4s_ssse3(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
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uint32_t n_channels, uint32_t n_samples)
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{
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const int24_t *s = src;
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float *d0 = dst[0], *d1 = dst[1], *d2 = dst[2], *d3 = dst[3];
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uint32_t n, unrolled;
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__m128i in[4];
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__m128 out[4], factor = _mm_set1_ps(1.0f / S24_SCALE);
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const __m128i mask = _mm_setr_epi8(-1, 0, 1, 2, -1, 3, 4, 5, -1, 6, 7, 8, -1, 9, 10, 11);
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//const __m128i mask = _mm_set_epi8(15, 14, 13, -1, 12, 11, 10, -1, 9, 8, 7, -1, 6, 5, 4, -1);
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if (SPA_IS_ALIGNED(d0, 16) &&
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SPA_IS_ALIGNED(d1, 16) &&
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SPA_IS_ALIGNED(d2, 16) &&
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SPA_IS_ALIGNED(d3, 16))
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unrolled = n_samples & ~3;
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else
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unrolled = 0;
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for(n = 0; n < unrolled; n += 4) {
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in[0] = _mm_loadu_si128((__m128i*)(s + 0*n_channels));
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in[1] = _mm_loadu_si128((__m128i*)(s + 1*n_channels));
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in[2] = _mm_loadu_si128((__m128i*)(s + 2*n_channels));
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in[3] = _mm_loadu_si128((__m128i*)(s + 3*n_channels));
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in[0] = _mm_shuffle_epi8(in[0], mask);
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in[1] = _mm_shuffle_epi8(in[1], mask);
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in[2] = _mm_shuffle_epi8(in[2], mask);
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in[3] = _mm_shuffle_epi8(in[3], mask);
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in[0] = _mm_srai_epi32(in[0], 8);
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in[1] = _mm_srai_epi32(in[1], 8);
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in[2] = _mm_srai_epi32(in[2], 8);
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in[3] = _mm_srai_epi32(in[3], 8);
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out[0] = _mm_cvtepi32_ps(in[0]);
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out[1] = _mm_cvtepi32_ps(in[1]);
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out[2] = _mm_cvtepi32_ps(in[2]);
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out[3] = _mm_cvtepi32_ps(in[3]);
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out[0] = _mm_mul_ps(out[0], factor);
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out[1] = _mm_mul_ps(out[1], factor);
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out[2] = _mm_mul_ps(out[2], factor);
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out[3] = _mm_mul_ps(out[3], factor);
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_MM_TRANSPOSE4_PS(out[0], out[1], out[2], out[3]);
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_mm_store_ps(&d0[n], out[0]);
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_mm_store_ps(&d1[n], out[1]);
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_mm_store_ps(&d2[n], out[2]);
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_mm_store_ps(&d3[n], out[3]);
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s += 4 * n_channels;
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}
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for(; n < n_samples; n++) {
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out[0] = _mm_cvtsi32_ss(factor, s24_to_s32(*s));
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out[1] = _mm_cvtsi32_ss(factor, s24_to_s32(*(s+1)));
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out[2] = _mm_cvtsi32_ss(factor, s24_to_s32(*(s+2)));
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out[3] = _mm_cvtsi32_ss(factor, s24_to_s32(*(s+3)));
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out[0] = _mm_mul_ss(out[0], factor);
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out[1] = _mm_mul_ss(out[1], factor);
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out[2] = _mm_mul_ss(out[2], factor);
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out[3] = _mm_mul_ss(out[3], factor);
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_mm_store_ss(&d0[n], out[0]);
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_mm_store_ss(&d1[n], out[1]);
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_mm_store_ss(&d2[n], out[2]);
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_mm_store_ss(&d3[n], out[3]);
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s += n_channels;
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}
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}
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void
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conv_s24_to_f32d_1s_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
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uint32_t n_channels, uint32_t n_samples);
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void
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conv_s24_to_f32d_ssse3(struct convert *conv, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src[],
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uint32_t n_samples)
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{
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const int8_t *s = src[0];
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uint32_t i = 0, n_channels = conv->n_channels;
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for(; i + 3 < n_channels; i += 4)
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conv_s24_to_f32d_4s_ssse3(conv, &dst[i], &s[3*i], n_channels, n_samples);
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for(; i < n_channels; i++)
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conv_s24_to_f32d_1s_sse2(conv, &dst[i], &s[3*i], n_channels, n_samples);
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}
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