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/*
* 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"
#include "libavcodec/dcadsp.h"
#include "libavcodec/mathops.h"
#if HAVE_ARMV6_INLINE && AV_GCC_VERSION_AT_LEAST(4,4)
#define decode_blockcodes decode_blockcodes
static inline int decode_blockcodes(int code1, int code2, int levels,
int32_t *values)
{
int32_t v0, v1, v2, v3, v4, v5;
__asm__ ("smmul %8, %14, %18 \n"
"smmul %11, %15, %18 \n"
"smlabb %14, %8, %17, %14 \n"
"smlabb %15, %11, %17, %15 \n"
"smmul %9, %8, %18 \n"
"smmul %12, %11, %18 \n"
"sub %14, %14, %16, lsr #1 \n"
"sub %15, %15, %16, lsr #1 \n"
"smlabb %8, %9, %17, %8 \n"
"smlabb %11, %12, %17, %11 \n"
"smmul %10, %9, %18 \n"
"smmul %13, %12, %18 \n"
"str %14, %0 \n"
"str %15, %4 \n"
"sub %8, %8, %16, lsr #1 \n"
"sub %11, %11, %16, lsr #1 \n"
"smlabb %9, %10, %17, %9 \n"
"smlabb %12, %13, %17, %12 \n"
"smmul %14, %10, %18 \n"
"smmul %15, %13, %18 \n"
"str %8, %1 \n"
"str %11, %5 \n"
"sub %9, %9, %16, lsr #1 \n"
"sub %12, %12, %16, lsr #1 \n"
"smlabb %10, %14, %17, %10 \n"
"smlabb %13, %15, %17, %13 \n"
"str %9, %2 \n"
"str %12, %6 \n"
"sub %10, %10, %16, lsr #1 \n"
"sub %13, %13, %16, lsr #1 \n"
"str %10, %3 \n"
"str %13, %7 \n"
: "=m"(values[0]), "=m"(values[1]),
"=m"(values[2]), "=m"(values[3]),
"=m"(values[4]), "=m"(values[5]),
"=m"(values[6]), "=m"(values[7]),
"=&r"(v0), "=&r"(v1), "=&r"(v2),
"=&r"(v3), "=&r"(v4), "=&r"(v5),
"+&r"(code1), "+&r"(code2)
: "r"(levels - 1), "r"(-levels), "r"(ff_inverse[levels]));
return code1 | code2;
}
#endif
#endif /* AVCODEC_ARM_DCA_H */
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