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| author | Mans Rullgard <mans@mansr.com> | 2011-12-12 23:22:04 +0000 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2011-12-13 12:06:21 +0000 |
| commit | 4722a03c75d17d88312b91cd1006776844237349 (patch) | |
| tree | b2814832aa845a3253c493b253ffda4e39010213 /libavcodec/arm | |
| parent | 40901fc14e1ae1a1074a70931a133b2bc2604a1c (diff) | |
| download | ffmpeg-4722a03c75d17d88312b91cd1006776844237349.tar.gz | |
rv34: NEON optimised 4x4 dequant
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec/arm')
| -rw-r--r-- | libavcodec/arm/rv34dsp_init_neon.c | 3 | ||||
| -rw-r--r-- | libavcodec/arm/rv34dsp_neon.S | 24 |
2 files changed, 27 insertions, 0 deletions
diff --git a/libavcodec/arm/rv34dsp_init_neon.c b/libavcodec/arm/rv34dsp_init_neon.c index 9a09fde7a9..acf2a7dcd3 100644 --- a/libavcodec/arm/rv34dsp_init_neon.c +++ b/libavcodec/arm/rv34dsp_init_neon.c @@ -25,9 +25,12 @@ void ff_rv34_inv_transform_neon(DCTELEM *block); void ff_rv34_inv_transform_noround_neon(DCTELEM *block); +void ff_rv34_dequant4x4_neon(DCTELEM *block, int Qdc, int Q); void ff_rv34dsp_init_neon(RV34DSPContext *c, DSPContext* dsp) { c->rv34_inv_transform_tab[0] = ff_rv34_inv_transform_neon; c->rv34_inv_transform_tab[1] = ff_rv34_inv_transform_noround_neon; + + c->rv34_dequant4x4 = ff_rv34_dequant4x4_neon; } diff --git a/libavcodec/arm/rv34dsp_neon.S b/libavcodec/arm/rv34dsp_neon.S index f700f5c321..423b537fb9 100644 --- a/libavcodec/arm/rv34dsp_neon.S +++ b/libavcodec/arm/rv34dsp_neon.S @@ -107,3 +107,27 @@ function ff_rv34_inv_transform_noround_neon, export=1 vst4.16 {d0[3], d1[3], d2[3], d3[3]}, [r2,:64], r1 bx lr endfunc + +function ff_rv34_dequant4x4_neon, export=1 + mov r3, r0 + mov r12, #16 + vdup.16 q0, r2 + vmov.16 d0[0], r1 + vld1.16 {d2}, [r0,:64], r12 + vld1.16 {d4}, [r0,:64], r12 + vld1.16 {d6}, [r0,:64], r12 + vld1.16 {d16}, [r0,:64], r12 + vmull.s16 q1, d2, d0 + vmull.s16 q2, d4, d1 + vmull.s16 q3, d6, d1 + vmull.s16 q8, d16, d1 + vqrshrn.s32 d2, q1, #4 + vqrshrn.s32 d4, q2, #4 + vqrshrn.s32 d6, q3, #4 + vqrshrn.s32 d16, q8, #4 + vst1.16 {d2}, [r3,:64], r12 + vst1.16 {d4}, [r3,:64], r12 + vst1.16 {d6}, [r3,:64], r12 + vst1.16 {d16}, [r3,:64], r12 + bx lr +endfunc |