diff options
| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2014-02-14 15:03:06 +0000 |
|---|---|---|
| committer | Janne Grunau <janne-libav@jannau.net> | 2014-02-28 13:00:47 +0100 |
| commit | 87ec849fe9acba075c843e67bcd01f256f481a18 (patch) | |
| tree | e071371104bda0f397ec2b647f90ae8d5a898bc1 /libavcodec/arm/dcadsp_neon.S | |
| parent | a55546f48d55e3d1155840541b2be5f4f8cf18ab (diff) | |
| download | ffmpeg-87ec849fe9acba075c843e67bcd01f256f481a18.tar.gz | |
dcadec: remove scaling in lfe_interpolation_fir
The scaling factor is constant so it is faster to scale the
FIR coefficients in the tables during compilation.
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
Diffstat (limited to 'libavcodec/arm/dcadsp_neon.S')
| -rw-r--r-- | libavcodec/arm/dcadsp_neon.S | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/libavcodec/arm/dcadsp_neon.S b/libavcodec/arm/dcadsp_neon.S index c798fea7f7..735c4c28e5 100644 --- a/libavcodec/arm/dcadsp_neon.S +++ b/libavcodec/arm/dcadsp_neon.S @@ -22,7 +22,6 @@ function ff_dca_lfe_fir0_neon, export=1 push {r4-r6,lr} -NOVFP vmov s0, r3 @ scale mov r3, #32 @ decifactor mov r6, #256/32 b dca_lfe_fir @@ -30,7 +29,6 @@ endfunc function ff_dca_lfe_fir1_neon, export=1 push {r4-r6,lr} -NOVFP vmov s0, r3 @ scale mov r3, #64 @ decifactor mov r6, #256/64 dca_lfe_fir: @@ -57,8 +55,7 @@ dca_lfe_fir: subs r3, r3, #1 vadd.f32 d4, d4, d5 vadd.f32 d6, d6, d7 - vpadd.f32 d4, d4, d6 - vmul.f32 d5, d4, d0[0] + vpadd.f32 d5, d4, d6 vst1.32 {d5[0]}, [r0,:32]! vst1.32 {d5[1]}, [r4,:32]! bne 1b |