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| author | Måns Rullgård <mans@mansr.com> | 2009-09-11 02:01:18 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2009-09-11 02:01:18 +0000 |
| commit | 750f5034cf4d0dbe54aed917972f9c3f7a2cebbd (patch) | |
| tree | aa57617a8c88a226c2ba0f2cce8ff8dae7cc76ba /libavcodec/arm/mdct_neon.S | |
| parent | 61d00297ab043635d25583234e5b48bf4f07c7c4 (diff) | |
| download | ffmpeg-750f5034cf4d0dbe54aed917972f9c3f7a2cebbd.tar.gz | |
ARM: faster NEON IMDCT
Originally committed as revision 19817 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/arm/mdct_neon.S')
| -rw-r--r-- | libavcodec/arm/mdct_neon.S | 46 |
1 files changed, 17 insertions, 29 deletions
diff --git a/libavcodec/arm/mdct_neon.S b/libavcodec/arm/mdct_neon.S index 6d1dcfd48d..d84eccda58 100644 --- a/libavcodec/arm/mdct_neon.S +++ b/libavcodec/arm/mdct_neon.S @@ -38,30 +38,28 @@ function ff_imdct_half_neon, export=1 mov r12, #-16 sub r7, r7, #16 - vld1.32 {d16-d17},[r7,:128],r12 @ d16=x,n1 d17=x,n0 - vld1.32 {d0-d1}, [r2,:128]! @ d0 =m0,x d1 =m1,x + vld2.32 {d16-d17},[r7,:128],r12 @ d16=x,n1 d17=x,n0 + vld2.32 {d0-d1}, [r2,:128]! @ d0 =m0,x d1 =m1,x + vrev64.32 d17, d17 vld1.32 {d2}, [r4,:64]! @ d2=c0,c1 + vmul.f32 d6, d17, d2 vld1.32 {d3}, [r5,:64]! @ d3=s0,s1 - vuzp.32 d17, d16 - vuzp.32 d0, d1 - vmul.f32 d6, d16, d2 vmul.f32 d7, d0, d2 1: subs lr, lr, #2 ldr r6, [r3], #4 vmul.f32 d4, d0, d3 - vmul.f32 d5, d16, d3 + vmul.f32 d5, d17, d3 vsub.f32 d4, d6, d4 vadd.f32 d5, d5, d7 uxtah r8, r1, r6, ror #16 uxtah r6, r1, r6 beq 1f - vld1.32 {d16-d17},[r7,:128],r12 - vld1.32 {d0-d1}, [r2,:128]! - vuzp.32 d17, d16 + vld2.32 {d16-d17},[r7,:128],r12 + vld2.32 {d0-d1}, [r2,:128]! + vrev64.32 d17, d17 vld1.32 {d2}, [r4,:64]! - vuzp.32 d0, d1 - vmul.f32 d6, d16, d2 + vmul.f32 d6, d17, d2 vld1.32 {d3}, [r5,:64]! vmul.f32 d7, d0, d2 vst2.32 {d4[0],d5[0]}, [r6,:64] @@ -95,11 +93,9 @@ function ff_imdct_half_neon, export=1 mov r8, r6 mov r0, r3 - vld1.32 {d0-d1}, [r3,:128], r7 @ d0 =i1,r1 d1 =i0,r0 - vld1.32 {d20-d21},[r6,:128]! @ d20=i2,r2 d21=i3,r3 + vld2.32 {d0-d1}, [r3,:128], r7 @ d0 =i1,r1 d1 =i0,r0 + vld2.32 {d20-d21},[r6,:128]! @ d20=i2,r2 d21=i3,r3 vld1.32 {d18}, [r2,:64], r12 @ d18=s1,s0 - vuzp.32 d20, d21 - vuzp.32 d0, d1 1: subs lr, lr, #2 vmul.f32 d7, d0, d18 @@ -118,25 +114,17 @@ function ff_imdct_half_neon, export=1 vsub.f32 d4, d4, d24 vsub.f32 d5, d5, d25 beq 1f - vld1.32 {d0-d1}, [r3,:128], r7 - vld1.32 {d20-d21},[r6,:128]! + vld2.32 {d0-d1}, [r3,:128], r7 + vld2.32 {d20-d21},[r6,:128]! vld1.32 {d18}, [r2,:64], r12 - vuzp.32 d20, d21 - vuzp.32 d0, d1 vrev64.32 q3, q3 - vtrn.32 d4, d6 - vtrn.32 d5, d7 - vswp d5, d6 - vst1.32 {d4-d5}, [r0,:128], r7 - vst1.32 {d6-d7}, [r8,:128]! + vst2.32 {d4,d6}, [r0,:128], r7 + vst2.32 {d5,d7}, [r8,:128]! b 1b 1: vrev64.32 q3, q3 - vtrn.32 d4, d6 - vtrn.32 d5, d7 - vswp d5, d6 - vst1.32 {d4-d5}, [r0,:128] - vst1.32 {d6-d7}, [r8,:128] + vst2.32 {d4,d6}, [r0,:128] + vst2.32 {d5,d7}, [r8,:128] pop {r4-r8,pc} .endfunc |