mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-26 01:02:33 +00:00
6308729e68
The inline asm added in bf5d46d uses the 'y' modifier which
is only supported from gcc 4.5. This check allows building
with older compilers.
Signed-off-by: Mans Rullgard <mans@mansr.com>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_ARM_DCA_H
|
|
#define AVCODEC_ARM_DCA_H
|
|
|
|
#include <stdint.h>
|
|
#include "config.h"
|
|
|
|
#if HAVE_NEON && HAVE_INLINE_ASM && HAVE_ASM_MOD_Y
|
|
|
|
#define int8x8_fmul_int32 int8x8_fmul_int32
|
|
static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale)
|
|
{
|
|
__asm__ ("vcvt.f32.s32 %2, %2, #4 \n"
|
|
"vld1.8 {d0}, [%1,:64] \n"
|
|
"vmovl.s8 q0, d0 \n"
|
|
"vmovl.s16 q1, d1 \n"
|
|
"vmovl.s16 q0, d0 \n"
|
|
"vcvt.f32.s32 q0, q0 \n"
|
|
"vcvt.f32.s32 q1, q1 \n"
|
|
"vmul.f32 q0, q0, %y2 \n"
|
|
"vmul.f32 q1, q1, %y2 \n"
|
|
"vst1.32 {q0-q1}, [%m0,:128] \n"
|
|
: "=Um"(*(float (*)[8])dst)
|
|
: "r"(src), "x"(scale)
|
|
: "d0", "d1", "d2", "d3");
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* AVCODEC_ARM_DCA_H */
|