/* Copyright (C) 2007-2008 Jean-Marc Valin
* Copyright ( C ) 2008 Thorvald Natvig
* Copyright ( C ) 2011 Texas Instruments
* author Jyri Sarha
*/
/**
@ file resample_neon . h
@ brief Resampler functions ( NEON version )
*/
/*
Redistribution and use in source and binary forms , with or without
modification , are permitted provided that the following conditions
are met :
- Redistributions of source code must retain the above copyright
notice , this list of conditions and the following disclaimer .
- Redistributions in binary form must reproduce the above copyright
notice , this list of conditions and the following disclaimer in the
documentation and / or other materials provided with the distribution .
- Neither the name of the Xiph . org Foundation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission .
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
` ` AS IS ' ' AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT , INCIDENTAL , SPECIAL ,
EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING , BUT NOT LIMITED TO ,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE , DATA , OR
PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT ( INCLUDING
NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
*/
#include <stdint.h>
#include "simd_detect.h"
#ifdef FIXED_POINT
#if defined (__aarch64__)
static inline int32_t saturate_32bit_to_16bit(int32_t a) {
int32_t ret;
asm ("fmov s0, %w[a]\n"
"sqxtn h0, s0\n"
"sxtl v0.4s, v0.4h\n"
"fmov %w[ret], s0\n"
: [ret] "=r" (ret)
: [a] "r" (a)
: "v0" );
return ret;
}
#elif defined (__thumb2__)
static inline int32_t saturate_32bit_to_16bit(int32_t a) {
int32_t ret;
asm ("ssat %[ret], #16, %[a]"
: [ret] "=r" (ret)
: [a] "r" (a)
: );
return ret;
}
#else
static inline int32_t saturate_32bit_to_16bit(int32_t a) {
int32_t ret;
asm ("vmov.s32 d0[0], %[a]\n"
"vqmovn.s32 d0, q0\n"
"vmov.s16 %[ret], d0[0]\n"
: [ret] "=r" (ret)
: [a] "r" (a)
: "q0" );
return ret;
}
#endif
#undef WORD2INT
#define WORD2INT(x) (saturate_32bit_to_16bit(x))
#define OVERRIDE_INNER_PRODUCT_SINGLE
/* Only works when len % 4 == 0 and len >= 4 */
#if defined (__aarch64__)
inline int32_t inner_product_single(const int16_t *a, const int16_t *b, unsigned int len)
{
int32_t ret;
uint32_t remainder = len % 16 ;
len = len - remainder;
asm volatile (" cmp %w[len], #0\n"
" b.ne 1f\n"
" ld1 {v16.4h}, [%[b]], #8\n"
" ld1 {v20.4h}, [%[a]], #8\n"
" subs %w[remainder], %w[remainder], #4\n"
" smull v0.4s, v16.4h, v20.4h\n"
" b.ne 4f\n"
" b 5f\n"
"1:"
" ld1 {v16.4h, v17.4h, v18.4h, v19.4h}, [%[b]], #32\n"
" ld1 {v20.4h, v21.4h, v22.4h, v23.4h}, [%[a]], #32\n"
" subs %w[len], %w[len], #16\n"
" smull v0.4s, v16.4h, v20.4h\n"
" smlal v0.4s, v17.4h, v21.4h\n"
" smlal v0.4s, v18.4h, v22.4h\n"
" smlal v0.4s, v19.4h, v23.4h\n"
" b.eq 3f\n"
"2:"
" ld1 {v16.4h, v17.4h, v18.4h, v19.4h}, [%[b]], #32\n"
" ld1 {v20.4h, v21.4h, v22.4h, v23.4h}, [%[a]], #32\n"
" subs %w[len], %w[len], #16\n"
" smlal v0.4s, v16.4h, v20.4h\n"
" smlal v0.4s, v17.4h, v21.4h\n"
" smlal v0.4s, v18.4h, v22.4h\n"
" smlal v0.4s, v19.4h, v23.4h\n"
" b.ne 2b\n"
"3:"
" cmp %w[remainder], #0\n"
" b.eq 5f\n"
"4:"
" ld1 {v18.4h}, [%[b]], #8\n"
" ld1 {v22.4h}, [%[a]], #8\n"
" subs %w[remainder], %w[remainder], #4\n"
" smlal v0.4s, v18.4h, v22.4h\n"
" b.ne 4b\n"
"5:"
" saddlv d0, v0.4s\n"
" sqxtn s0, d0\n"
" sqrshrn h0, s0, #15\n"
" sxtl v0.4s, v0.4h\n"
" fmov %w[ret], s0\n"
: [ret] "=r" (ret), [a] "+r" (a), [b] "+r" (b),
[len] "+r" (len), [remainder] "+r" (remainder)
:
: "cc" , "v0" ,
"v16" , "v17" , "v18" , "v19" , "v20" , "v21" , "v22" , "v23" );
return ret;
}
#else
inline int32_t inner_product_single(const int16_t *a, const int16_t *b, unsigned int len)
{
int32_t ret;
uint32_t remainder = len % 16 ;
len = len - remainder;
asm volatile (" cmp %[len], #0\n"
" bne 1f\n"
" vld1.16 {d16}, [%[b]]!\n"
" vld1.16 {d20}, [%[a]]!\n"
" subs %[remainder], %[remainder], #4\n"
" vmull.s16 q0, d16, d20\n"
" beq 5f\n"
" b 4f\n"
"1:"
" vld1.16 {d16, d17, d18, d19}, [%[b]]!\n"
" vld1.16 {d20, d21, d22, d23}, [%[a]]!\n"
" subs %[len], %[len], #16\n"
" vmull.s16 q0, d16, d20\n"
" vmlal.s16 q0, d17, d21\n"
" vmlal.s16 q0, d18, d22\n"
" vmlal.s16 q0, d19, d23\n"
" beq 3f\n"
"2:"
" vld1.16 {d16, d17, d18, d19}, [%[b]]!\n"
" vld1.16 {d20, d21, d22, d23}, [%[a]]!\n"
" subs %[len], %[len], #16\n"
" vmlal.s16 q0, d16, d20\n"
" vmlal.s16 q0, d17, d21\n"
" vmlal.s16 q0, d18, d22\n"
" vmlal.s16 q0, d19, d23\n"
" bne 2b\n"
"3:"
" cmp %[remainder], #0\n"
" beq 5f\n"
"4:"
" vld1.16 {d16}, [%[b]]!\n"
" vld1.16 {d20}, [%[a]]!\n"
" subs %[remainder], %[remainder], #4\n"
" vmlal.s16 q0, d16, d20\n"
" bne 4b\n"
"5:"
" vaddl.s32 q0, d0, d1\n"
" vadd.s64 d0, d0, d1\n"
" vqmovn.s64 d0, q0\n"
" vqrshrn.s32 d0, q0, #15\n"
" vmov.s16 %[ret], d0[0]\n"
: [ret] "=r" (ret), [a] "+r" (a), [b] "+r" (b),
[len] "+r" (len), [remainder] "+r" (remainder)
:
: "cc" , "q0" ,
"d16" , "d17" , "d18" , "d19" , "d20" , "d21" , "d22" , "d23" );
return ret;
}
#endif // !defined(__aarch64__)
#elif defined (FLOATING_POINT)
#if defined (__aarch64__)
static inline int32_t saturate_float_to_16bit(float a) {
int32_t ret;
asm ("fcvtas s1, %s[a]\n"
"sqxtn h1, s1\n"
"sxtl v1.4s, v1.4h\n"
"fmov %w[ret], s1\n"
: [ret] "=r" (ret)
: [a] "w" (a)
: "v1" );
return ret;
}
#else
static inline int32_t saturate_float_to_16bit(float a) {
int32_t ret;
asm ("vmov.f32 d0[0], %[a]\n"
"vcvt.s32.f32 d0, d0, #15\n"
"vqrshrn.s32 d0, q0, #15\n"
"vmov.s16 %[ret], d0[0]\n"
: [ret] "=r" (ret)
: [a] "r" (a)
: "q0" );
return ret;
}
#endif
#undef WORD2INT
#define WORD2INT(x) (saturate_float_to_16bit(x))
#define OVERRIDE_INNER_PRODUCT_SINGLE
/* Only works when len % 4 == 0 and len >= 4 */
#if defined (__aarch64__)
inline float inner_product_single(const float *a, const float *b, unsigned int len)
{
float ret;
uint32_t remainder = len % 16 ;
len = len - remainder;
asm volatile (" cmp %w[len], #0\n"
" b.ne 1f\n"
" ld1 {v16.4s}, [%[b]], #16\n"
" ld1 {v20.4s}, [%[a]], #16\n"
" subs %w[remainder], %w[remainder], #4\n"
" fmul v1.4s, v16.4s, v20.4s\n"
" b.ne 4f\n"
" b 5f\n"
"1:"
" ld1 {v16.4s, v17.4s, v18.4s, v19.4s}, [%[b]], #64\n"
" ld1 {v20.4s, v21.4s, v22.4s, v23.4s}, [%[a]], #64\n"
" subs %w[len], %w[len], #16\n"
" fmul v1.4s, v16.4s, v20.4s\n"
" fmul v2.4s, v17.4s, v21.4s\n"
" fmul v3.4s, v18.4s, v22.4s\n"
" fmul v4.4s, v19.4s, v23.4s\n"
" b.eq 3f\n"
"2:"
" ld1 {v16.4s, v17.4s, v18.4s, v19.4s}, [%[b]], #64\n"
" ld1 {v20.4s, v21.4s, v22.4s, v23.4s}, [%[a]], #64\n"
" subs %w[len], %w[len], #16\n"
" fmla v1.4s, v16.4s, v20.4s\n"
" fmla v2.4s, v17.4s, v21.4s\n"
" fmla v3.4s, v18.4s, v22.4s\n"
" fmla v4.4s, v19.4s, v23.4s\n"
" b.ne 2b\n"
"3:"
" fadd v16.4s, v1.4s, v2.4s\n"
" fadd v17.4s, v3.4s, v4.4s\n"
" cmp %w[remainder], #0\n"
" fadd v1.4s, v16.4s, v17.4s\n"
" b.eq 5f\n"
"4:"
" ld1 {v18.4s}, [%[b]], #16\n"
" ld1 {v22.4s}, [%[a]], #16\n"
" subs %w[remainder], %w[remainder], #4\n"
" fmla v1.4s, v18.4s, v22.4s\n"
" b.ne 4b\n"
"5:"
" faddp v1.4s, v1.4s, v1.4s\n"
" faddp %[ret].4s, v1.4s, v1.4s\n"
: [ret] "=w" (ret), [a] "+r" (a), [b] "+r" (b),
[len] "+r" (len), [remainder] "+r" (remainder)
:
: "cc" , "v1" , "v2" , "v3" , "v4" ,
"v16" , "v17" , "v18" , "v19" , "v20" , "v21" , "v22" , "v23" );
return ret;
}
#else
inline float inner_product_single(const float *a, const float *b, unsigned int len)
{
float ret;
uint32_t remainder = len % 16 ;
len = len - remainder;
asm volatile (" cmp %[len], #0\n"
" bne 1f\n"
" vld1.32 {q4}, [%[b]]!\n"
" vld1.32 {q8}, [%[a]]!\n"
" subs %[remainder], %[remainder], #4\n"
" vmul.f32 q0, q4, q8\n"
" bne 4f\n"
" b 5f\n"
"1:"
" vld1.32 {q4, q5}, [%[b]]!\n"
" vld1.32 {q8, q9}, [%[a]]!\n"
" vld1.32 {q6, q7}, [%[b]]!\n"
" vld1.32 {q10, q11}, [%[a]]!\n"
" subs %[len], %[len], #16\n"
" vmul.f32 q0, q4, q8\n"
" vmul.f32 q1, q5, q9\n"
" vmul.f32 q2, q6, q10\n"
" vmul.f32 q3, q7, q11\n"
" beq 3f\n"
"2:"
" vld1.32 {q4, q5}, [%[b]]!\n"
" vld1.32 {q8, q9}, [%[a]]!\n"
" vld1.32 {q6, q7}, [%[b]]!\n"
" vld1.32 {q10, q11}, [%[a]]!\n"
" subs %[len], %[len], #16\n"
" vmla.f32 q0, q4, q8\n"
" vmla.f32 q1, q5, q9\n"
" vmla.f32 q2, q6, q10\n"
" vmla.f32 q3, q7, q11\n"
" bne 2b\n"
"3:"
" vadd.f32 q4, q0, q1\n"
" vadd.f32 q5, q2, q3\n"
" cmp %[remainder], #0\n"
" vadd.f32 q0, q4, q5\n"
" beq 5f\n"
"4:"
" vld1.32 {q6}, [%[b]]!\n"
" vld1.32 {q10}, [%[a]]!\n"
" subs %[remainder], %[remainder], #4\n"
" vmla.f32 q0, q6, q10\n"
" bne 4b\n"
"5:"
" vadd.f32 d0, d0, d1\n"
" vpadd.f32 d0, d0, d0\n"
" vmov.f32 %[ret], d0[0]\n"
: [ret] "=r" (ret), [a] "+r" (a), [b] "+r" (b),
[len] "+l" (len), [remainder] "+l" (remainder)
:
: "cc" , "q0" , "q1" , "q2" , "q3" ,
"q4" , "q5" , "q6" , "q7" , "q8" , "q9" , "q10" , "q11" );
return ret;
}
#endif // defined(__aarch64__)
#endif
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