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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
/*
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* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_ARM_DCA_H
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#define AVCODEC_ARM_DCA_H
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#include <stdint.h>
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#include "config.h"
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#if HAVE_NEON && HAVE_INLINE_ASM && HAVE_ASM_MOD_Y
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#define int8x8_fmul_int32 int8x8_fmul_int32
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static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale)
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{
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__asm__ ("vcvt.f32.s32 %2, %2, #4 \n"
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"vld1.8 {d0}, [%1,:64] \n"
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"vmovl.s8 q0, d0 \n"
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"vmovl.s16 q1, d1 \n"
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"vmovl.s16 q0, d0 \n"
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"vcvt.f32.s32 q0, q0 \n"
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"vcvt.f32.s32 q1, q1 \n"
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"vmul.f32 q0, q0, %y2 \n"
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"vmul.f32 q1, q1, %y2 \n"
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"vst1.32 {q0-q1}, [%m0,:128] \n"
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: "=Um"(*(float (*)[8])dst)
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: "r"(src), "x"(scale)
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: "d0", "d1", "d2", "d3");
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}
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#endif
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#endif /* AVCODEC_ARM_DCA_H */
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