diff options
Diffstat (limited to 'Transceiver52M/arch/x86/convert.c')
-rw-r--r-- | Transceiver52M/arch/x86/convert.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/Transceiver52M/arch/x86/convert.c b/Transceiver52M/arch/x86/convert.c new file mode 100644 index 0000000..07cdf59 --- /dev/null +++ b/Transceiver52M/arch/x86/convert.c @@ -0,0 +1,83 @@ +/* + * SSE type conversions + * Copyright (C) 2013 Thomas Tsou <tom@tsou.cc> + * + * This library 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 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <malloc.h> +#include <string.h> +#include "convert.h" +#include "convert_sse_3.h" +#include "convert_sse_4_1.h" + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +/* Architecture dependant function pointers */ +struct convert_cpu_context { + void (*convert_si16_ps_16n) (float *, const short *, int); + void (*convert_si16_ps) (float *, const short *, int); + void (*convert_scale_ps_si16_16n)(short *, const float *, float, int); + void (*convert_scale_ps_si16_8n)(short *, const float *, float, int); + void (*convert_scale_ps_si16)(short *, const float *, float, int); +}; + +static struct convert_cpu_context c; + +void convert_init(void) +{ + c.convert_scale_ps_si16_16n = base_convert_float_short; + c.convert_scale_ps_si16_8n = base_convert_float_short; + c.convert_scale_ps_si16 = base_convert_float_short; + c.convert_si16_ps_16n = base_convert_short_float; + c.convert_si16_ps = base_convert_short_float; + +#ifdef HAVE___BUILTIN_CPU_SUPPORTS +#ifdef HAVE_SSE4_1 + if (__builtin_cpu_supports("sse4.1")) { + c.convert_si16_ps_16n = &_sse_convert_si16_ps_16n; + c.convert_si16_ps = &_sse_convert_si16_ps; + } +#endif + +#ifdef HAVE_SSE3 + if (__builtin_cpu_supports("sse3")) { + c.convert_scale_ps_si16_16n = _sse_convert_scale_ps_si16_16n; + c.convert_scale_ps_si16_8n = _sse_convert_scale_ps_si16_8n; + c.convert_scale_ps_si16 = _sse_convert_scale_ps_si16; + } +#endif +#endif +} + +void convert_float_short(short *out, const float *in, float scale, int len) +{ + if (!(len % 16)) + c.convert_scale_ps_si16_16n(out, in, scale, len); + else if (!(len % 8)) + c.convert_scale_ps_si16_8n(out, in, scale, len); + else + c.convert_scale_ps_si16(out, in, scale, len); +} + +void convert_short_float(float *out, const short *in, int len) +{ + if (!(len % 16)) + c.convert_si16_ps_16n(out, in, len); + else + c.convert_si16_ps(out, in, len); +} |