d4999e0a79
Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit 08e3dea3f7f69309574dafc0af6671615e909720) Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
89 lines
3.1 KiB
C
89 lines
3.1 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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#include "libavutil/intmath.h"
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#if HAVE_ARMV6 && HAVE_INLINE_ASM
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#define decode_blockcode decode_blockcode
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static inline int decode_blockcode(int code, int levels, int *values)
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{
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int v0, v1, v2, v3;
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__asm__ ("smmul %4, %8, %11 \n"
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"smlabb %8, %4, %10, %8 \n"
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"smmul %5, %4, %11 \n"
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"sub %8, %8, %9, lsr #1 \n"
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"smlabb %4, %5, %10, %4 \n"
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"smmul %6, %5, %11 \n"
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"str %8, %0 \n"
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"sub %4, %4, %9, lsr #1 \n"
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"smlabb %5, %6, %10, %5 \n"
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"smmul %7, %6, %11 \n"
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"str %4, %1 \n"
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"sub %5, %5, %9, lsr #1 \n"
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"smlabb %6, %7, %10, %6 \n"
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"cmp %7, #0 \n"
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"str %5, %2 \n"
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"sub %6, %6, %9, lsr #1 \n"
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"it eq \n"
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"mvneq %7, #0 \n"
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"str %6, %3 \n"
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: "=m"(values[0]), "=m"(values[1]),
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"=m"(values[2]), "=m"(values[3]),
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"=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3),
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"+&r"(code)
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: "r"(levels - 1), "r"(-levels), "r"(ff_inverse[levels])
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: "cc");
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return v3;
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}
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#endif
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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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