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audio-resampler: fix neon linear float interpolation

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This commit is contained in:
Wim Taymans 2016-02-22 03:28:21 -05:00
parent d969a7a9d8
commit 2c33c2134c
1 changed files with 10 additions and 23 deletions
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33
gst-libs/gst/audio/audio-resampler-neon.h
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@ -310,44 +310,31 @@ static inline void
inner_product_gfloat_linear_1_neon (gfloat * o, const gfloat * a, inner_product_gfloat_linear_1_neon (gfloat * o, const gfloat * a,
const gfloat * b, gint len, const gfloat * icoeff) const gfloat * b, gint len, const gfloat * icoeff)
{ {
uint32_t remainder = len % 8;
len = len - remainder;
asm volatile (" vmov.f32 q0, #0.0\n" asm volatile (" vmov.f32 q0, #0.0\n"
" cmp %[len], #0\n" " cmp %[len], #0\n"
" beq 2f\n" " beq 2f\n"
" vmov.f32 q1, #0.0\n" " vmov.f32 q1, #0.0\n"
"1:" "1:"
" vld2.f32 {q4, q5}, [%[b]]!\n" " vld1.f32 {d16, d17, d18, d19}, [%[b]]!\n"
" vld2.f32 {q6, q7}, [%[b]]!\n" " vld2.f32 {d20[], d21[]}, [%[a]]!\n"
" vld1.f32 {q8, q9}, [%[a]]!\n" " vld2.f32 {d22[], d23[]}, [%[a]]!\n"
" subs %[len], %[len], #8\n" " subs %[len], %[len], #4\n"
" vmla.f32 q0, q4, q8\n" " vmla.f32 q0, q8, q10\n"
" vmla.f32 q1, q5, q8\n" " vmla.f32 q1, q9, q11\n"
" vmla.f32 q0, q6, q9\n"
" vmla.f32 q1, q7, q9\n"
" bne 1b\n" " bne 1b\n"
" vadd.f32 q0, q0, q1\n" " vadd.f32 q0, q0, q1\n"
"2:" "2:"
" cmp %[remainder], #0\n"
" beq 4f\n"
"3:"
" vld2.f32 {q4}, [%[b]]!\n"
" vld1.f32 {q8}, [%[a]]!\n"
" subs %[remainder], %[remainder], #4\n"
" vmla.f32 q0, q4, q8\n"
" bne 3b\n"
"4:"
" vld1.f32 {q10}, [%[ic]]\n" " vld1.f32 {q10}, [%[ic]]\n"
" vmul.f32 q0, q0, q10\n" " vmul.f32 q0, q0, q10\n"
" vadd.f32 d0, d0, d1\n" " vadd.f32 d0, d0, d1\n"
" vpadd.f32 d0, d0, d0\n" " vpadd.f32 d0, d0, d0\n"
" vst1.f32 d0[0], [%[o]]\n" " vst1.f32 d0[0], [%[o]]\n"
: [a] "+r" (a), [b] "+r" (b), : [a] "+r" (a), [b] "+r" (b),
[len] "+r" (len), [remainder] "+r" (remainder) [len] "+r" (len)
: [o] "r" (o), [ic] "r" (icoeff) : [o] "r" (o), [ic] "r" (icoeff)
: "cc", "q0", "q1", "q4", "q5", "q6", "q7", "q8", : "cc", "q0", "q1",
"q9", "q10", "q11", "memory"); "d16", "d17", "d18", "d19",
"d20", "d21", "d22", "d23", "memory");
} }
static inline void static inline void