Commit 9bda7f30 authored by Måns Rullgård's avatar Måns Rullgård
Browse files

ARM: NEON optimised int32_to_float_fmul_scalar

Originally committed as revision 20000 to svn://
parent b418a6ca
......@@ -169,6 +169,8 @@ void ff_sv_fmul_scalar_4_neon(float *dst, const float **vp, float mul,
int len);
void ff_butterflies_float_neon(float *v1, float *v2, int len);
float ff_scalarproduct_float_neon(const float *v1, const float *v2, int len);
void ff_int32_to_float_fmul_scalar_neon(float *dst, const int *src,
float mul, int len);
void ff_float_to_int16_neon(int16_t *, const float *, long);
void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
......@@ -284,6 +286,7 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->vector_fmul_scalar = ff_vector_fmul_scalar_neon;
c->butterflies_float = ff_butterflies_float_neon;
c->scalarproduct_float = ff_scalarproduct_float_neon;
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon;
c->vector_fmul_sv_scalar[0] = ff_vector_fmul_sv_scalar_2_neon;
c->vector_fmul_sv_scalar[1] = ff_vector_fmul_sv_scalar_4_neon;
......@@ -1023,3 +1023,31 @@ function ff_scalarproduct_float_neon, export=1
NOVFP vmov.32 r0, d0[0]
bx lr
function ff_int32_to_float_fmul_scalar_neon, export=1
VFP vdup.32 q0, d0[0]
VFP len .req r2
NOVFP vdup.32 q0, r2
NOVFP len .req r3
vld1.32 {q1},[r1,:128]!
vcvt.f32.s32 q3, q1
vld1.32 {q2},[r1,:128]!
vcvt.f32.s32 q8, q2
1: subs len, len, #8
pld [r1, #16]
vmul.f32 q9, q3, q0
vmul.f32 q10, q8, q0
beq 2f
vld1.32 {q1},[r1,:128]!
vcvt.f32.s32 q3, q1
vld1.32 {q2},[r1,:128]!
vcvt.f32.s32 q8, q2
vst1.32 {q9}, [r0,:128]!
vst1.32 {q10},[r0,:128]!
b 1b
2: vst1.32 {q9}, [r0,:128]!
vst1.32 {q10},[r0,:128]!
bx lr
.unreq len
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