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| author | Kostya Shishkov <kostya.shishkov@gmail.com> | 2010-02-22 12:20:31 +0000 |
|---|---|---|
| committer | Måns Rullgård <mans@mansr.com> | 2010-02-22 12:20:31 +0000 |
| commit | 9b3c455c5098ce647ac809d6526a71b79fd84a8f (patch) | |
| tree | 84de4469adfa4c72774e29136a4a0cd96916b742 /libavcodec/arm/int_neon.S | |
| parent | 0e5f33f2426dae28725b14468b61cbad052da240 (diff) | |
ARM: NEON scalarproduct_int16 and scalarproduct_and_madd_int16
Patch by Kostya, minor fixes by me.
Originally committed as revision 21958 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/arm/int_neon.S')
| -rw-r--r-- | libavcodec/arm/int_neon.S | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/libavcodec/arm/int_neon.S b/libavcodec/arm/int_neon.S new file mode 100644 index 0000000000..8868852bbf --- /dev/null +++ b/libavcodec/arm/int_neon.S @@ -0,0 +1,118 @@ +/* + * ARM NEON optimised integer operations + * Copyright (c) 2009 Kostya Shishkov + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "asm.S" + + preserve8 + .fpu neon + .text + +function ff_scalarproduct_int16_neon, export=1 + vmov.i16 q0, #0 + vmov.i16 q1, #0 + vmov.i16 q2, #0 + vmov.i16 q3, #0 + negs r3, r3 + beq 2f + + vdup.s32 q12, r3 +1: vld1.16 {d16-d17}, [r0]! + vld1.16 {d20-d21}, [r1,:128]! + vmull.s16 q12, d16, d20 + vld1.16 {d18-d19}, [r0]! + vmull.s16 q13, d17, d21 + vld1.16 {d22-d23}, [r1,:128]! + vmull.s16 q14, d18, d22 + vmull.s16 q15, d19, d23 + vshl.s32 q8, q12, q12 + vshl.s32 q9, q13, q12 + vadd.s32 q0, q0, q8 + vshl.s32 q10, q14, q12 + vadd.s32 q1, q1, q9 + vshl.s32 q11, q15, q12 + vadd.s32 q2, q2, q10 + vadd.s32 q3, q3, q11 + subs r2, r2, #16 + bne 1b + b 3f + +2: vld1.16 {d16-d17}, [r0]! + vld1.16 {d20-d21}, [r1,:128]! + vmlal.s16 q0, d16, d20 + vld1.16 {d18-d19}, [r0]! + vmlal.s16 q1, d17, d21 + vld1.16 {d22-d23}, [r1,:128]! + vmlal.s16 q2, d18, d22 + vmlal.s16 q3, d19, d23 + subs r2, r2, #16 + bne 2b + +3: vpadd.s32 d16, d0, d1 + vpadd.s32 d17, d2, d3 + vpadd.s32 d10, d4, d5 + vpadd.s32 d11, d6, d7 + vpadd.s32 d0, d16, d17 + vpadd.s32 d1, d10, d11 + vpadd.s32 d2, d0, d1 + vpaddl.s32 d3, d2 + vmov.32 r0, d3[0] + bx lr + .endfunc + +@ scalarproduct_and_madd_int16(/*aligned*/v0,v1,v2,order,mul) +function ff_scalarproduct_and_madd_int16_neon, export=1 + vld1.16 {d28[],d29[]}, [sp] + vmov.i16 q0, #0 + vmov.i16 q1, #0 + vmov.i16 q2, #0 + vmov.i16 q3, #0 + mov r12, r0 + +1: vld1.16 {d16-d17}, [r0,:128]! + vld1.16 {d18-d19}, [r1]! + vld1.16 {d20-d21}, [r2]! + vld1.16 {d22-d23}, [r0,:128]! + vld1.16 {d24-d25}, [r1]! + vld1.16 {d26-d27}, [r2]! + vmul.s16 q10, q10, q14 + vmul.s16 q13, q13, q14 + vmlal.s16 q0, d16, d18 + vmlal.s16 q1, d17, d19 + vadd.s16 q10, q8, q10 + vadd.s16 q13, q11, q13 + vmlal.s16 q2, d22, d24 + vmlal.s16 q3, d23, d25 + vst1.16 {q10}, [r12,:128]! + subs r3, r3, #16 + vst1.16 {q13}, [r12,:128]! + bne 1b + + vpadd.s32 d16, d0, d1 + vpadd.s32 d17, d2, d3 + vpadd.s32 d10, d4, d5 + vpadd.s32 d11, d6, d7 + vpadd.s32 d0, d16, d17 + vpadd.s32 d1, d10, d11 + vpadd.s32 d2, d0, d1 + vpaddl.s32 d3, d2 + vmov.32 r0, d3[0] + bx lr + .endfunc |