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add a simple abstraction for SIMD operations

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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/pulsecore/vector.h Normal file
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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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.
***/
#include <inttypes.h>
/* First, define HAVE_VECTOR if we have the gcc vector extensions at all */
#if defined(__SSE2__) || defined(__ALTIVEC__)
#define HAVE_VECTOR
/* This is supposed to be portable to different SIMD instruction
* sets. We define vector types for different base types: uint8_t,
* int16_t, int32_t, float. The vector type is a union. The fields .i,
* .u, .f are arrays for accessing the separate elements of a
* vector. .v is a gcc vector type of the right format. .m is the
* vector in the type the SIMD extenstion specific intrinsics API
* expects. PA_xxx_VECTOR_SIZE is the size of the
* entries. PA_xxxx_VECTOR_MAKE constructs a gcc vector variable with
* the same value in all elements. */
#ifdef __SSE2__
#include <xmmintrin.h>
#include <emmintrin.h>
#define PA_UINT8_VECTOR_SIZE 16
#define PA_INT16_VECTOR_SIZE 8
#define PA_INT32_VECTOR_SIZE 4
#define PA_FLOAT_VECTOR_SIZE 4
#define PA_UINT8_VECTOR_MAKE(x) (pa_v16qi) { x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x }
#define PA_INT16_VECTOR_MAKE(x) (pa_v8hi) { x, x, x, x, x, x, x, x }
#define PA_INT32_VECTOR_MAKE(x) (pa_v4si) { x, x, x, x }
#define PA_FLOAT_VECTOR_MAKE(x) (pa_v4fi) { x, x, x, x }
#endif
/* uint8_t vector */
typedef uint8_t pa_v16qi __attribute__ ((vector_size (PA_UINT8_VECTOR_SIZE * sizeof(uint8_t))));
typedef union pa_uint8_vector {
uint8_t u[PA_UINT8_VECTOR_SIZE];
pa_v16qi v;
#ifdef __SSE2__
__m128i m;
#endif
} pa_uint8_vector_t;
/* int16_t vector*/
typedef int16_t pa_v8hi __attribute__ ((vector_size (PA_INT16_VECTOR_SIZE * sizeof(int16_t))));
typedef union pa_int16_vector {
int16_t i[PA_INT16_VECTOR_SIZE];
pa_v8hi v;
#ifdef __SSE2__
__m128i m;
#endif
} pa_int16_vector_t;
/* int32_t vector */
typedef int32_t pa_v4si __attribute__ ((vector_size (PA_INT32_VECTOR_SIZE * sizeof(int32_t))));
typedef union pa_int32_vector {
int32_t i[PA_INT32_VECTOR_SIZE];
pa_v4si v;
#ifdef __SSE2__
__m128i m;
#endif
} pa_int32_vector_t;
/* float vector */
typedef float pa_v4sf __attribute__ ((vector_size (PA_FLOAT_VECTOR_SIZE * sizeof(float))));
typedef union pa_float_vector {
float f[PA_FLOAT_VECTOR_SIZE];
pa_v4sf v;
#ifdef __SSE2__
__m128 m;
#endif
} pa_float_vector_t;
#endif