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c8d3d475bb
Compile an optimized library for the given CPU with the right flags, then link it with the main library.
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/* Spa
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <math.h>
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#include <spa/utils/defs.h>
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#define U8_MIN 0
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#define U8_MAX 255
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#define U8_SCALE 127.5f
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#define U8_OFFS 128
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#define U8_TO_F32(v) ((((uint8_t)(v)) * (1.0f / U8_OFFS)) - 1.0)
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#define F32_TO_U8(v) (uint8_t)((SPA_CLAMP(v, -1.0f, 1.0f) * U8_SCALE) + U8_OFFS)
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#define S16_MIN -32767
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#define S16_MAX 32767
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#define S16_MAX_F 32767.0f
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#define S16_SCALE 32767.0f
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#define S16_TO_F32(v) (((int16_t)(v)) * (1.0f / S16_SCALE))
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#define F32_TO_S16(v) (int16_t)(SPA_CLAMP(v, -1.0f, 1.0f) * S16_SCALE)
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#define S24_MIN -8388607
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#define S24_MAX 8388607
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#define S24_MAX_F 8388607.0f
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#define S24_SCALE 8388607.0f
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#define S24_TO_F32(v) (((int32_t)(v)) * (1.0f / S24_SCALE))
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#define F32_TO_S24(v) (int32_t)(SPA_CLAMP(v, -1.0f, 1.0f) * S24_SCALE)
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#define S32_SCALE 2147483648.0f
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#define S32_MIN 2147483520.0f
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#define S32_TO_F32(v) S24_TO_F32((v) >> 8)
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#define F32_TO_S32(v) (F32_TO_S24(v) << 8)
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static inline int32_t read_s24(const void *src)
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{
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const int8_t *s = src;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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return (((int32_t)s[2] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[0]);
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#else
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return (((int32_t)s[0] << 16) | ((uint32_t)(uint8_t)s[1] << 8) | (uint32_t)(uint8_t)s[2]);
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#endif
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}
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static inline void write_s24(void *dst, int32_t val)
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{
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uint8_t *d = dst;
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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d[0] = (uint8_t) (val);
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d[1] = (uint8_t) (val >> 8);
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d[2] = (uint8_t) (val >> 16);
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#else
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d[0] = (uint8_t) (val >> 16);
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d[1] = (uint8_t) (val >> 8);
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d[2] = (uint8_t) (val);
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#endif
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}
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typedef void (*convert_func_t) (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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#if defined(HAVE_SSE2)
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void conv_s16_to_f32d_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 conv_s24_to_f32d_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 conv_f32d_to_s32_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 conv_f32d_to_s16_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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#endif
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#if defined(HAVE_SSSE3)
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void conv_s24_to_f32d_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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#endif
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#if defined(HAVE_SSE41)
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void conv_s24_to_f32d_sse41(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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#endif
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