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| author | Geoff Hill <geoff@geoffhill.org> | 2024-04-06 07:26:01 -0700 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2024-04-08 13:36:40 +0300 |
| commit | 69cb34f8859ed62fd1c46d3612912a334542fe28 (patch) | |
| tree | 18c68304f42d58cd17d400c7ce94326ef1d958d9 /libavcodec/aarch64/ac3dsp_neon.S | |
| parent | 6f6bd10531e439de67d1354c5fc6f78cc031c66b (diff) | |
| download | ffmpeg-69cb34f8859ed62fd1c46d3612912a334542fe28.tar.gz | |
avcodec/ac3: Implement ac3_extract_exponents for aarch64 NEON
Signed-off-by: Geoff Hill <geoff@geoffhill.org>
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/aarch64/ac3dsp_neon.S')
| -rw-r--r-- | libavcodec/aarch64/ac3dsp_neon.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libavcodec/aarch64/ac3dsp_neon.S b/libavcodec/aarch64/ac3dsp_neon.S index f916c32538..c350c1f173 100644 --- a/libavcodec/aarch64/ac3dsp_neon.S +++ b/libavcodec/aarch64/ac3dsp_neon.S @@ -37,6 +37,20 @@ function ff_ac3_exponent_min_neon, export=1 3: ret endfunc +function ff_ac3_extract_exponents_neon, export=1 + movi v1.4s, #8 +1: ld1 {v0.4s}, [x1], #16 + abs v0.4s, v0.4s + clz v0.4s, v0.4s + sub v0.4s, v0.4s, v1.4s + xtn v0.4h, v0.4s + xtn v0.8b, v0.8h + st1 {v0.s}[0], [x0], #4 + subs w2, w2, #4 + b.gt 1b + ret +endfunc + function ff_float_to_fixed24_neon, export=1 1: ld1 {v0.4s, v1.4s}, [x1], #32 fcvtzs v0.4s, v0.4s, #24 |