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ARM: NEON optimised apply_window_int16()

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Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2011-03-23 01:45:43 +00:00
parent 245c78313f
commit 2d3b21ffb9
2 changed files with 28 additions and 0 deletions
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5
libavcodec/arm/dsputil_init_neon.c
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@ -168,6 +168,9 @@ int32_t ff_scalarproduct_int16_neon(const int16_t *v1, const int16_t *v2, int le
int32_t ff_scalarproduct_and_madd_int16_neon(int16_t *v1, const int16_t *v2,
const int16_t *v3, int len, int mul);
void ff_apply_window_int16_neon(int16_t *dst, const int16_t *src,
const int16_t *window, int n);
void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
{
if (!avctx->lowres) {
@ -319,4 +322,6 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->scalarproduct_int16 = ff_scalarproduct_int16_neon;
c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_neon;
c->apply_window_int16 = ff_apply_window_int16_neon;
}

23
libavcodec/arm/dsputil_neon.S
View File

@ -789,3 +789,26 @@ NOVFP ldr r2, [sp]
vst1.f32 {q9},[r0,:128]!
bx lr
endfunc
function ff_apply_window_int16_neon, export=1
push {r4,lr}
add r4, r1, r3, lsl #1
add lr, r0, r3, lsl #1
sub r4, r4, #16
sub lr, lr, #16
mov r12, #-16
1:
vld1.16 {q0}, [r1,:128]!
vld1.16 {q2}, [r2,:128]!
vld1.16 {q1}, [r4,:128], r12
vrev64.16 q3, q2
vqrdmulh.s16 q0, q0, q2
vqrdmulh.s16 d2, d2, d7
vqrdmulh.s16 d3, d3, d6
vst1.16 {q0}, [r0,:128]!
vst1.16 {q1}, [lr,:128], r12
subs r3, r3, #16
bgt 1b
pop {r4,pc}
endfunc