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| author | Mans Rullgard <mans@mansr.com> | 2011-03-29 03:09:00 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2011-07-06 00:29:59 +0100 |
| commit | 4a28e26ea412a370fb4285f9eb66d8cbbb582420 (patch) | |
| tree | 8d5ae84ebb5d171cba9a3cacabcbaf1d778e1292 /libavcodec/arm/ac3dsp_neon.S | |
| parent | a4928cf380634fd75761405169ac73e696caaf11 (diff) | |
| download | ffmpeg-4a28e26ea412a370fb4285f9eb66d8cbbb582420.tar.gz | |
ac3enc: NEON optimised sum_square_butterfly_float
Diffstat (limited to 'libavcodec/arm/ac3dsp_neon.S')
| -rw-r--r-- | libavcodec/arm/ac3dsp_neon.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libavcodec/arm/ac3dsp_neon.S b/libavcodec/arm/ac3dsp_neon.S index a15fbbcfa1..152afbfd3c 100644 --- a/libavcodec/arm/ac3dsp_neon.S +++ b/libavcodec/arm/ac3dsp_neon.S @@ -132,3 +132,23 @@ function ff_ac3_sum_square_butterfly_int32_neon, export=1 vst1.64 {q0-q1}, [r0] bx lr endfunc + +function ff_ac3_sum_square_butterfly_float_neon, export=1 + vmov.f32 q0, #0.0 + vmov.f32 q1, #0.0 +1: + vld1.32 {d16}, [r1]! + vld1.32 {d17}, [r2]! + vadd.f32 d18, d16, d17 + vsub.f32 d19, d16, d17 + vmla.f32 d0, d16, d16 + vmla.f32 d1, d17, d17 + vmla.f32 d2, d18, d18 + vmla.f32 d3, d19, d19 + subs r3, r3, #2 + bgt 1b + vpadd.f32 d0, d0, d1 + vpadd.f32 d1, d2, d3 + vst1.32 {q0}, [r0] + bx lr +endfunc |