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add a simple abstraction for SIMD operations

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This commit is contained in:
Lennart Poettering 2009-01-23 19:45:11 +01:00
parent 2a238b2d7f
commit 5cb29f3a60
4 changed files with 189 additions and 1 deletions
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src/tests/vector-test.c Normal file
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/***
This file is part of PulseAudio.
Copyright 2009 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulsecore/vector.h>
#include <pulsecore/log.h>
int main(int argc, char *argv[]) {
#ifdef __SSE2__
pa_int16_vector_t input, zero;
pa_int32_vector_t unpacked1, unpacked2;
pa_int32_vector_t volume1, volume2, volume1_hi, volume1_lo, volume2_hi, volume2_lo, reduce, mask;
pa_int16_vector_t output;
unsigned u;
zero.v = PA_INT16_VECTOR_MAKE(0);
reduce.v = PA_INT32_VECTOR_MAKE(0x10000);
volume1.v = volume2.v = PA_INT32_VECTOR_MAKE(0x10000*2+7);
mask.v = PA_INT32_VECTOR_MAKE(0xFFFF);
volume1_lo.m = _mm_and_si128(volume1.m, mask.m);
volume2_lo.m = _mm_and_si128(volume2.m, mask.m);
volume1_hi.m = _mm_srli_epi32(volume1.m, 16);
volume2_hi.m = _mm_srli_epi32(volume2.m, 16);
input.v = PA_INT16_VECTOR_MAKE(32000);
for (u = 0; u < PA_INT16_VECTOR_SIZE; u++)
pa_log("input=%i\n", input.i[u]);
unpacked1.m = _mm_unpackhi_epi16(zero.m, input.m);
unpacked2.m = _mm_unpacklo_epi16(zero.m, input.m);
for (u = 0; u < PA_INT32_VECTOR_SIZE; u++)
pa_log("unpacked1=%i\n", unpacked1.i[u]);
unpacked1.v /= reduce.v;
unpacked2.v /= reduce.v;
for (u = 0; u < PA_INT32_VECTOR_SIZE; u++)
pa_log("unpacked1=%i\n", unpacked1.i[u]);
for (u = 0; u < PA_INT32_VECTOR_SIZE; u++)
pa_log("volume1=%i\n", volume1.i[u]);
unpacked1.v = (unpacked1.v * volume1_lo.v) / reduce.v + unpacked1.v * volume1_hi.v;
unpacked2.v = (unpacked2.v * volume2_lo.v) / reduce.v + unpacked2.v * volume2_hi.v;
for (u = 0; u < PA_INT32_VECTOR_SIZE; u++)
pa_log("unpacked1=%i\n", unpacked1.i[u]);
output.m = _mm_packs_epi32(unpacked1.m, unpacked2.m);
for (u = 0; u < PA_INT16_VECTOR_SIZE; u++)
pa_log("output=%i\n", output.i[u]);
#endif
return 0;
}