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AAC: ARM/NEON asm for VMUL2/4 functions

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Originally committed as revision 21219 to svn://svn.ffmpeg.org/ffmpeg/trunk
release/0.6
Måns Rullgård 15 years ago
parent c78dfcdaf4
commit 798339fb46
2 changed files with 142 additions and 0 deletions
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  1. 12
      libavcodec/aac.c
  2. 130
      libavcodec/arm/aac.h

12
libavcodec/aac.c
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@ -93,6 +93,10 @@
#include <math.h> #include <math.h>
#include <string.h> #include <string.h>
#if ARCH_ARM
# include "arm/aac.h"
#endif
union float754 { union float754 {
float f; float f;
uint32_t i; uint32_t i;
@ -862,6 +866,7 @@ static void decode_mid_side_stereo(ChannelElement *cpe, GetBitContext *gb,
} }
} }
#ifndef VMUL2
static inline float *VMUL2(float *dst, const float *v, unsigned idx, static inline float *VMUL2(float *dst, const float *v, unsigned idx,
const float *scale) const float *scale)
{ {
@ -870,7 +875,9 @@ static inline float *VMUL2(float *dst, const float *v, unsigned idx,
*dst++ = v[idx>>4 & 15] * s; *dst++ = v[idx>>4 & 15] * s;
return dst; return dst;
} }
#endif
#ifndef VMUL4
static inline float *VMUL4(float *dst, const float *v, unsigned idx, static inline float *VMUL4(float *dst, const float *v, unsigned idx,
const float *scale) const float *scale)
{ {
@ -881,7 +888,9 @@ static inline float *VMUL4(float *dst, const float *v, unsigned idx,
*dst++ = v[idx>>6 & 3] * s; *dst++ = v[idx>>6 & 3] * s;
return dst; return dst;
} }
#endif
#ifndef VMUL2S
static inline float *VMUL2S(float *dst, const float *v, unsigned idx, static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale) unsigned sign, const float *scale)
{ {
@ -896,7 +905,9 @@ static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
return dst; return dst;
} }
#endif
#ifndef VMUL4S
static inline float *VMUL4S(float *dst, const float *v, unsigned idx, static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale) unsigned sign, const float *scale)
{ {
@ -921,6 +932,7 @@ static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
return dst; return dst;
} }
#endif
/** /**
* Decode spectral data; reference: table 4.50. * Decode spectral data; reference: table 4.50.

130
libavcodec/arm/aac.h
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@ -0,0 +1,130 @@
/*
* Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
*
* 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
*/
#if HAVE_NEON && HAVE_INLINE_ASM
#define VMUL2 VMUL2
static inline float *VMUL2(float *dst, const float *v, unsigned idx,
const float *scale)
{
unsigned v0, v1;
__asm__ volatile ("ubfx %0, %4, #0, #4 \n\t"
"ubfx %1, %4, #4, #4 \n\t"
"ldr %0, [%3, %0, lsl #2] \n\t"
"ldr %1, [%3, %1, lsl #2] \n\t"
"vld1.32 {d1[]}, [%5,:32] \n\t"
"vmov d0, %0, %1 \n\t"
"vmul.f32 d0, d0, d1 \n\t"
"vst1.32 {d0}, [%2,:64]! \n\t"
: "=&r"(v0), "=&r"(v1), "+r"(dst)
: "r"(v), "r"(idx), "r"(scale)
: "d0", "d1");
return dst;
}
#define VMUL4 VMUL4
static inline float *VMUL4(float *dst, const float *v, unsigned idx,
const float *scale)
{
unsigned v0, v1, v2, v3;
__asm__ volatile ("ubfx %0, %6, #0, #2 \n\t"
"ubfx %1, %6, #2, #2 \n\t"
"ldr %0, [%5, %0, lsl #2] \n\t"
"ubfx %2, %6, #4, #2 \n\t"
"ldr %1, [%5, %1, lsl #2] \n\t"
"ubfx %3, %6, #6, #2 \n\t"
"ldr %2, [%5, %2, lsl #2] \n\t"
"vmov d0, %0, %1 \n\t"
"ldr %3, [%5, %3, lsl #2] \n\t"
"vld1.32 {d2[],d3[]},[%7,:32] \n\t"
"vmov d1, %2, %3 \n\t"
"vmul.f32 q0, q0, q1 \n\t"
"vst1.32 {q0}, [%4,:128]! \n\t"
: "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst)
: "r"(v), "r"(idx), "r"(scale)
: "d0", "d1", "d2", "d3");
return dst;
}
#define VMUL2S VMUL2S
static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
unsigned v0, v1, v2, v3;
__asm__ volatile ("ubfx %0, %6, #0, #4 \n\t"
"ubfx %1, %6, #4, #4 \n\t"
"ldr %0, [%5, %0, lsl #2] \n\t"
"lsl %2, %8, #30 \n\t"
"ldr %1, [%5, %1, lsl #2] \n\t"
"lsl %3, %8, #31 \n\t"
"vmov d0, %0, %1 \n\t"
"bic %2, %2, #1<<30 \n\t"
"vld1.32 {d1[]}, [%7,:32] \n\t"
"vmov d2, %2, %3 \n\t"
"veor d0, d0, d2 \n\t"
"vmul.f32 d0, d0, d1 \n\t"
"vst1.32 {d0}, [%4,:64]! \n\t"
: "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst)
: "r"(v), "r"(idx), "r"(scale), "r"(sign)
: "d0", "d1", "d2");
return dst;
}
#define VMUL4S VMUL4S
static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
unsigned v0, v1, v2, v3, nz;
__asm__ volatile ("vld1.32 {d2[],d3[]},[%9,:32] \n\t"
"ubfx %0, %8, #0, #2 \n\t"
"ubfx %1, %8, #2, #2 \n\t"
"ldr %0, [%7, %0, lsl #2] \n\t"
"ubfx %2, %8, #4, #2 \n\t"
"ldr %1, [%7, %1, lsl #2] \n\t"
"ubfx %3, %8, #6, #2 \n\t"
"ldr %2, [%7, %2, lsl #2] \n\t"
"vmov d0, %0, %1 \n\t"
"ldr %3, [%7, %3, lsl #2] \n\t"
"lsr %6, %8, #12 \n\t"
"rbit %6, %6 \n\t"
"vmov d1, %2, %3 \n\t"
"lsls %6, %6, #1 \n\t"
"and %0, %5, #1<<31 \n\t"
"lslcs %5, %5, #1 \n\t"
"lsls %6, %6, #1 \n\t"
"and %1, %5, #1<<31 \n\t"
"lslcs %5, %5, #1 \n\t"
"lsls %6, %6, #1 \n\t"
"and %2, %5, #1<<31 \n\t"
"lslcs %5, %5, #1 \n\t"
"vmov d4, %0, %1 \n\t"
"and %3, %5, #1<<31 \n\t"
"vmov d5, %2, %3 \n\t"
"veor q0, q0, q2 \n\t"
"vmul.f32 q0, q0, q1 \n\t"
"vst1.32 {q0}, [%4,:128]! \n\t"
: "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
"+r"(sign), "=r"(nz)
: "r"(v), "r"(idx), "r"(scale)
: "d0", "d1", "d2", "d3", "d4", "d5");
return dst;
}
#endif /* HAVE_NEON && HAVE_INLINE_ASM */
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