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Code Issues Releases Activity

ARM: NEON optimised scalarproduct_float

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Originally committed as revision 19971 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2009-09-22 20:37:55 +00:00
parent 0cb7141282
commit 275cfd1501
2 changed files with 15 additions and 0 deletions
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2
libavcodec/arm/dsputil_neon.c
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@ -168,6 +168,7 @@ void ff_sv_fmul_scalar_2_neon(float *dst, const float **vp, float mul,
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_float_to_int16_neon(int16_t *, const float *, long);
void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
@ -282,6 +283,7 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->vector_fmul_window = ff_vector_fmul_window_neon;
c->vector_fmul_scalar = ff_vector_fmul_scalar_neon;
c->butterflies_float = ff_butterflies_float_neon;
c->scalarproduct_float = ff_scalarproduct_float_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;

13
libavcodec/arm/dsputil_neon_s.S
View File

@ -1010,3 +1010,16 @@ function ff_butterflies_float_neon, export=1
bgt 1b
bx lr
.endfunc
function ff_scalarproduct_float_neon, export=1
vmov.f32 q2, #0.0
1: vld1.32 {q0},[r0,:128]!
vld1.32 {q1},[r1,:128]!
vmla.f32 q2, q0, q1
subs r2, r2, #4
bgt 1b
vadd.f32 d0, d4, d5
vpadd.f32 d0, d0, d0
NOVFP vmov.32 r0, d0[0]
bx lr
.endfunc