code.delx.au - pulseaudio/blob - src/pulsecore/vector.h

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #include <inttypes.h>
  24
  25 /* First, define HAVE_VECTOR if we have the gcc vector extensions at all */
  26 #if defined(__SSE2__) || defined(__ALTIVEC__)
  27 #define HAVE_VECTOR
  28
  29
  30 /* This is supposed to be portable to different SIMD instruction
  31  * sets. We define vector types for different base types: uint8_t,
  32  * int16_t, int32_t, float. The vector type is a union. The fields .i,
  33  * .u, .f are arrays for accessing the separate elements of a
  34  * vector. .v is a gcc vector type of the right format. .m is the
  35  * vector in the type the SIMD extenstion specific intrinsics API
  36  * expects. PA_xxx_VECTOR_SIZE is the size of the
  37  * entries. PA_xxxx_VECTOR_MAKE constructs a gcc vector variable with
  38  * the same value in all elements. */
  39
  40 #ifdef __SSE2__
  41
  42 #include <xmmintrin.h>
  43 #include <emmintrin.h>
  44
  45 #define PA_UINT8_VECTOR_SIZE 16
  46 #define PA_INT16_VECTOR_SIZE 8
  47 #define PA_INT32_VECTOR_SIZE 4
  48 #define PA_FLOAT_VECTOR_SIZE 4
  49
  50 #define PA_UINT8_VECTOR_MAKE(x) (pa_v16qi) { x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x }
  51 #define PA_INT16_VECTOR_MAKE(x) (pa_v8hi) { x, x, x, x, x, x, x, x }
  52 #define PA_INT32_VECTOR_MAKE(x) (pa_v4si) { x, x, x, x }
  53 #define PA_FLOAT_VECTOR_MAKE(x) (pa_v4fi) { x, x, x, x }
  54
  55 #endif
  56
  57 /* uint8_t vector */
  58 typedef uint8_t pa_v16qi __attribute__ ((vector_size (PA_UINT8_VECTOR_SIZE * sizeof(uint8_t))));
  59 typedef union pa_uint8_vector {
  60     uint8_t u[PA_UINT8_VECTOR_SIZE];
  61     pa_v16qi v;
  62 #ifdef __SSE2__
  63     __m128i m;
  64 #endif
  65 } pa_uint8_vector_t;
  66
  67 /* int16_t vector*/
  68 typedef int16_t pa_v8hi __attribute__ ((vector_size (PA_INT16_VECTOR_SIZE * sizeof(int16_t))));
  69 typedef union pa_int16_vector {
  70     int16_t i[PA_INT16_VECTOR_SIZE];
  71     pa_v8hi v;
  72 #ifdef __SSE2__
  73     __m128i m;
  74 #endif
  75 } pa_int16_vector_t;
  76
  77 /* int32_t vector */
  78 typedef int32_t pa_v4si __attribute__ ((vector_size (PA_INT32_VECTOR_SIZE * sizeof(int32_t))));
  79 typedef union pa_int32_vector {
  80     int32_t i[PA_INT32_VECTOR_SIZE];
  81     pa_v4si v;
  82 #ifdef __SSE2__
  83     __m128i m;
  84 #endif
  85 } pa_int32_vector_t;
  86
  87 /* float vector */
  88 typedef float pa_v4sf __attribute__ ((vector_size (PA_FLOAT_VECTOR_SIZE * sizeof(float))));
  89 typedef union pa_float_vector {
  90     float f[PA_FLOAT_VECTOR_SIZE];
  91     pa_v4sf v;
  92 #ifdef __SSE2__
  93     __m128 m;
  94 #endif
  95 } pa_float_vector_t;
  96
  97 #endif