82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
|
||
|
|
*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg 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.
|
||
|
|
*
|
||
|
|
* FFmpeg 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 FFmpeg; 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/mathops.h"
|
||
|
|
|
||
|
|
#if HAVE_ARMV6_INLINE && AV_GCC_VERSION_AT_LEAST(4,4) && !CONFIG_THUMB
|
||
|
|
|
||
|
|
#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 %0, %6, %10 \n"
|
||
|
|
"smmul %3, %7, %10 \n"
|
||
|
|
"smlabb %6, %0, %9, %6 \n"
|
||
|
|
"smlabb %7, %3, %9, %7 \n"
|
||
|
|
"smmul %1, %0, %10 \n"
|
||
|
|
"smmul %4, %3, %10 \n"
|
||
|
|
"sub %6, %6, %8, lsr #1 \n"
|
||
|
|
"sub %7, %7, %8, lsr #1 \n"
|
||
|
|
"smlabb %0, %1, %9, %0 \n"
|
||
|
|
"smlabb %3, %4, %9, %3 \n"
|
||
|
|
"smmul %2, %1, %10 \n"
|
||
|
|
"smmul %5, %4, %10 \n"
|
||
|
|
"str %6, [%11, #0] \n"
|
||
|
|
"str %7, [%11, #16] \n"
|
||
|
|
"sub %0, %0, %8, lsr #1 \n"
|
||
|
|
"sub %3, %3, %8, lsr #1 \n"
|
||
|
|
"smlabb %1, %2, %9, %1 \n"
|
||
|
|
"smlabb %4, %5, %9, %4 \n"
|
||
|
|
"smmul %6, %2, %10 \n"
|
||
|
|
"smmul %7, %5, %10 \n"
|
||
|
|
"str %0, [%11, #4] \n"
|
||
|
|
"str %3, [%11, #20] \n"
|
||
|
|
"sub %1, %1, %8, lsr #1 \n"
|
||
|
|
"sub %4, %4, %8, lsr #1 \n"
|
||
|
|
"smlabb %2, %6, %9, %2 \n"
|
||
|
|
"smlabb %5, %7, %9, %5 \n"
|
||
|
|
"str %1, [%11, #8] \n"
|
||
|
|
"str %4, [%11, #24] \n"
|
||
|
|
"sub %2, %2, %8, lsr #1 \n"
|
||
|
|
"sub %5, %5, %8, lsr #1 \n"
|
||
|
|
"str %2, [%11, #12] \n"
|
||
|
|
"str %5, [%11, #28] \n"
|
||
|
|
: "=&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]), "r"(values)
|
||
|
|
: "memory");
|
||
|
|
|
||
|
|
return code1 | code2;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* AVCODEC_ARM_DCA_H */
|