fb3c33f3cd
* commit '4cb6964244fd6c099383d8b7e99731e72cc844b9': dcadec: simplify decoding of VQ high frequencies Conflicts: configure libavcodec/dcadec.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
83 lines
3.1 KiB
C
83 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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "libavcodec/dcadsp.h"
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#include "libavcodec/mathops.h"
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#if HAVE_ARMV6_INLINE && AV_GCC_VERSION_AT_LEAST(4,4) && !CONFIG_THUMB
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#define decode_blockcodes decode_blockcodes
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static inline int decode_blockcodes(int code1, int code2, int levels,
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int32_t *values)
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{
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int32_t v0, v1, v2, v3, v4, v5;
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__asm__ ("smmul %0, %6, %10 \n"
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"smmul %3, %7, %10 \n"
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"smlabb %6, %0, %9, %6 \n"
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"smlabb %7, %3, %9, %7 \n"
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"smmul %1, %0, %10 \n"
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"smmul %4, %3, %10 \n"
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"sub %6, %6, %8, lsr #1 \n"
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"sub %7, %7, %8, lsr #1 \n"
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"smlabb %0, %1, %9, %0 \n"
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"smlabb %3, %4, %9, %3 \n"
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"smmul %2, %1, %10 \n"
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"smmul %5, %4, %10 \n"
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"str %6, [%11, #0] \n"
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"str %7, [%11, #16] \n"
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"sub %0, %0, %8, lsr #1 \n"
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"sub %3, %3, %8, lsr #1 \n"
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"smlabb %1, %2, %9, %1 \n"
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"smlabb %4, %5, %9, %4 \n"
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"smmul %6, %2, %10 \n"
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"smmul %7, %5, %10 \n"
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"str %0, [%11, #4] \n"
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"str %3, [%11, #20] \n"
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"sub %1, %1, %8, lsr #1 \n"
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"sub %4, %4, %8, lsr #1 \n"
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"smlabb %2, %6, %9, %2 \n"
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"smlabb %5, %7, %9, %5 \n"
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"str %1, [%11, #8] \n"
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"str %4, [%11, #24] \n"
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"sub %2, %2, %8, lsr #1 \n"
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"sub %5, %5, %8, lsr #1 \n"
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"str %2, [%11, #12] \n"
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"str %5, [%11, #28] \n"
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: "=&r"(v0), "=&r"(v1), "=&r"(v2),
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"=&r"(v3), "=&r"(v4), "=&r"(v5),
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"+&r"(code1), "+&r"(code2)
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: "r"(levels - 1), "r"(-levels),
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"r"(ff_inverse[levels]), "r"(values)
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: "memory");
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return code1 | code2;
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}
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#endif
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#endif /* AVCODEC_ARM_DCA_H */
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