mirror of https://git.ffmpeg.org/ffmpeg.git
split bswap.h into per-arch files
Originally committed as revision 15663 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
37d3e0667a
commit
3a90480ac4
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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 AVUTIL_ARM_BSWAP_H
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#define AVUTIL_ARM_BSWAP_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#ifdef HAVE_ARMV6
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#define bswap_16 bswap_16
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static av_always_inline av_const uint16_t bswap_16(uint16_t x)
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{
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__asm__("rev16 %0, %0" : "+r"(x));
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return x;
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}
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#endif
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#define bswap_32 bswap_32
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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{
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#ifdef HAVE_ARMV6
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__asm__("rev %0, %0" : "+r"(x));
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#else
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uint32_t t;
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__asm__ ("eor %1, %0, %0, ror #16 \n\t"
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"bic %1, %1, #0xFF0000 \n\t"
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"mov %0, %0, ror #8 \n\t"
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"eor %0, %0, %1, lsr #8 \n\t"
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: "+r"(x), "=&r"(t));
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#endif /* HAVE_ARMV6 */
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return x;
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}
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#endif /* AVUTIL_ARM_BSWAP_H */
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@ -0,0 +1,45 @@
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/*
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* Copyright (C) 2007 Marc Hoffman
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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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/**
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* @file bswap.h
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* byte swapping routines
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*/
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#ifndef AVUTIL_BFIN_BSWAP_H
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#define AVUTIL_BFIN_BSWAP_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#define bswap_32 bswap_32
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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{
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unsigned tmp;
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__asm__("%1 = %0 >> 8 (V); \n\t"
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"%0 = %0 << 8 (V); \n\t"
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"%0 = %0 | %1; \n\t"
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"%0 = PACK(%0.L, %0.H); \n\t"
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: "+d"(x), "=&d"(tmp));
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return x;
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}
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#endif /* AVUTIL_BFIN_BSWAP_H */
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@ -30,68 +30,40 @@
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#include "config.h"
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#include "config.h"
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#include "common.h"
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#include "common.h"
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#if defined(ARCH_ARMV4L)
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# include "arm/bswap.h"
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#elif defined(ARCH_BFIN)
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# include "bfin/bswap.h"
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#elif defined(ARCH_SH4)
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# include "sh4/bswap.h"
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#elif defined(ARCH_X86)
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# include "x86/bswap.h"
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#endif
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#ifndef bswap_16
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static av_always_inline av_const uint16_t bswap_16(uint16_t x)
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static av_always_inline av_const uint16_t bswap_16(uint16_t x)
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{
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{
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#if defined(ARCH_X86)
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__asm__("rorw $8, %0" : "+r"(x));
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#elif defined(ARCH_SH4)
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__asm__("swap.b %0,%0" : "=r"(x) : "0"(x));
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#elif defined(HAVE_ARMV6)
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__asm__("rev16 %0, %0" : "+r"(x));
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#else
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x= (x>>8) | (x<<8);
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x= (x>>8) | (x<<8);
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#endif
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return x;
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return x;
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}
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}
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#endif
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#ifndef bswap_32
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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{
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{
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#if defined(ARCH_X86)
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#ifdef HAVE_BSWAP
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__asm__("bswap %0" : "+r" (x));
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#else
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__asm__("rorw $8, %w0 \n\t"
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"rorl $16, %0 \n\t"
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"rorw $8, %w0"
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: "+r"(x));
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#endif
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#elif defined(ARCH_SH4)
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__asm__("swap.b %0,%0\n"
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"swap.w %0,%0\n"
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"swap.b %0,%0\n"
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: "=r"(x) : "0"(x));
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#elif defined(HAVE_ARMV6)
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__asm__("rev %0, %0" : "+r"(x));
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#elif defined(ARCH_ARMV4L)
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uint32_t t;
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__asm__ ("eor %1, %0, %0, ror #16 \n\t"
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"bic %1, %1, #0xFF0000 \n\t"
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"mov %0, %0, ror #8 \n\t"
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"eor %0, %0, %1, lsr #8 \n\t"
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: "+r"(x), "=&r"(t));
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#elif defined(ARCH_BFIN)
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unsigned tmp;
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__asm__("%1 = %0 >> 8 (V); \n\t"
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"%0 = %0 << 8 (V); \n\t"
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"%0 = %0 | %1; \n\t"
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"%0 = PACK(%0.L, %0.H); \n\t"
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: "+d"(x), "=&d"(tmp));
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#else
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x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
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x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
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x= (x>>16) | (x<<16);
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x= (x>>16) | (x<<16);
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#endif
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return x;
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return x;
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}
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}
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#endif
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#ifndef bswap_64
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static inline uint64_t av_const bswap_64(uint64_t x)
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static inline uint64_t av_const bswap_64(uint64_t x)
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{
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{
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#if 0
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#if 0
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x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL);
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x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL);
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x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
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x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
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return (x>>32) | (x<<32);
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return (x>>32) | (x<<32);
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#elif defined(ARCH_X86_64)
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__asm__("bswap %0": "=r" (x) : "0" (x));
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return x;
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#else
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#else
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union {
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union {
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uint64_t ll;
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uint64_t ll;
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@ -103,6 +75,7 @@ static inline uint64_t av_const bswap_64(uint64_t x)
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return r.ll;
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return r.ll;
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#endif
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#endif
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}
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}
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#endif
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// be2me ... BigEndian to MachineEndian
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// be2me ... BigEndian to MachineEndian
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// le2me ... LittleEndian to MachineEndian
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// le2me ... LittleEndian to MachineEndian
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@ -0,0 +1,48 @@
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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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/**
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* @file bswap.h
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* byte swapping routines
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*/
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#ifndef AVUTIL_SH4_BSWAP_H
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#define AVUTIL_SH4_BSWAP_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#define bswap_16 bswap_16
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static av_always_inline av_const uint16_t bswap_16(uint16_t x)
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{
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__asm__("swap.b %0,%0" : "+r"(x));
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return x;
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}
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#define bswap_32 bswap_32
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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{
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__asm__("swap.b %0,%0\n"
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"swap.w %0,%0\n"
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"swap.b %0,%0\n"
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: "+r"(x));
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return x;
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}
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#endif /* AVUTIL_SH4_BSWAP_H */
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@ -0,0 +1,61 @@
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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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/**
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* @file bswap.h
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* byte swapping routines
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*/
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#ifndef AVUTIL_X86_BSWAP_H
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#define AVUTIL_X86_BSWAP_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#define bswap_16 bswap_16
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static av_always_inline av_const uint16_t bswap_16(uint16_t x)
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{
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__asm__("rorw $8, %0" : "+r"(x));
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return x;
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}
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#define bswap_32 bswap_32
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static av_always_inline av_const uint32_t bswap_32(uint32_t x)
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{
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#ifdef HAVE_BSWAP
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__asm__("bswap %0" : "+r" (x));
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#else
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__asm__("rorw $8, %w0 \n\t"
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"rorl $16, %0 \n\t"
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"rorw $8, %w0"
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: "+r"(x));
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#endif
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return x;
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}
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#ifdef ARCH_X86_64
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#define bswap_64 bswap_64
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static inline uint64_t av_const bswap_64(uint64_t x)
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{
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__asm__("bswap %0": "=r" (x) : "0" (x));
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return x;
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}
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#endif
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#endif /* AVUTIL_X86_BSWAP_H */
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