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ARM: NEON scalarproduct_int16 and scalarproduct_and_madd_int16

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Patch by Kostya, minor fixes by me.

Originally committed as revision 21958 to svn://svn.ffmpeg.org/ffmpeg/trunk
release/0.6
Kostya Shishkov 15 years ago committed by Måns Rullgård
parent 0e5f33f242
commit 9b3c455c50
3 changed files with 127 additions and 0 deletions
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  1. 1
      libavcodec/Makefile
  2. 8
      libavcodec/arm/dsputil_init_neon.c
  3. 118
      libavcodec/arm/int_neon.S

1
libavcodec/Makefile
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@ -641,6 +641,7 @@ NEON-OBJS-$(CONFIG_VP3_DECODER) += arm/vp3dsp_neon.o
OBJS-$(HAVE_NEON) += arm/dsputil_init_neon.o \
arm/dsputil_neon.o \
arm/int_neon.o \
arm/simple_idct_neon.o \
$(NEON-OBJS-yes)

8
libavcodec/arm/dsputil_init_neon.c
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@ -227,6 +227,11 @@ void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
void ff_vorbis_inverse_coupling_neon(float *mag, float *ang, int blocksize);
int32_t ff_scalarproduct_int16_neon(int16_t *v1, int16_t *v2, int len,
int shift);
int32_t ff_scalarproduct_and_madd_int16_neon(int16_t *v1, int16_t *v2,
int16_t *v3, int len, int mul);
void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
{
if (!avctx->lowres) {
@ -406,4 +411,7 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
if (CONFIG_VORBIS_DECODER)
c->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_neon;
c->scalarproduct_int16 = ff_scalarproduct_int16_neon;
c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_neon;
}

118
libavcodec/arm/int_neon.S
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@ -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
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