From e184ef1027ba8f41aca65dbae2af05662b23c722 Mon Sep 17 00:00:00 2001 From: Mohamed Tarek Date: Mon, 6 Jul 2009 22:40:45 +0000 Subject: Adding support for rm playback. Only cook codec is supported for now and no seeking. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21695 a1c6a512-1295-4272-9138-f99709370657 --- apps/codecs/libcook/bswap.h | 173 ++++++++++++++++++++++++++++---------------- 1 file changed, 112 insertions(+), 61 deletions(-) (limited to 'apps/codecs/libcook/bswap.h') diff --git a/apps/codecs/libcook/bswap.h b/apps/codecs/libcook/bswap.h index 443cd1c3f9..b083d10ed0 100644 --- a/apps/codecs/libcook/bswap.h +++ b/apps/codecs/libcook/bswap.h @@ -1,86 +1,137 @@ -/* - * copyright (c) 2006 Michael Niedermayer - * - * 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 - */ - /** - * @file libavutil/bswap.h - * byte swapping routines + * @file bswap.h + * byte swap. */ -#ifndef AVUTIL_BSWAP_H -#define AVUTIL_BSWAP_H - -#include -//#include "ffmpeg_config.h" -//#include "common.h" - -#if ARCH_ARM -# include "arm/bswap.h" -#elif ARCH_BFIN -# include "bfin/bswap.h" -#elif ARCH_SH4 -# include "sh4/bswap.h" -#elif ARCH_X86 -# include "x86/bswap.h" -#endif +#ifndef __BSWAP_H__ +#define __BSWAP_H__ + +#ifdef HAVE_BYTESWAP_H +#include +#else -#ifndef bswap_16 -static inline uint16_t bswap_16(uint16_t x) +#ifdef ROCKBOX +#include "codecs.h" + +/* rockbox' optimised inline functions */ +#define bswap_16(x) swap16(x) +#define bswap_32(x) swap32(x) + +static inline uint64_t ByteSwap64(uint64_t x) { - x= (x>>8) | (x<<8); - return x; + union { + uint64_t ll; + struct { + uint32_t l,h; + } l; + } r; + r.l.l = bswap_32 (x); + r.l.h = bswap_32 (x>>32); + return r.ll; } -#endif +#define bswap_64(x) ByteSwap64(x) -#ifndef bswap_32 -static inline uint32_t bswap_32(uint32_t x) +#elif defined(ARCH_X86) +static inline unsigned short ByteSwap16(unsigned short x) { - x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF); - x= (x>>16) | (x<<16); + __asm("xchgb %b0,%h0" : + "=q" (x) : + "0" (x)); return x; } +#define bswap_16(x) ByteSwap16(x) + +static inline unsigned int ByteSwap32(unsigned int x) +{ +#if __CPU__ > 386 + __asm("bswap %0": + "=r" (x) : +#else + __asm("xchgb %b0,%h0\n" + " rorl $16,%0\n" + " xchgb %b0,%h0": + "=q" (x) : #endif + "0" (x)); + return x; +} +#define bswap_32(x) ByteSwap32(x) -#ifndef bswap_64 -static inline uint64_t bswap_64(uint64_t x) +static inline unsigned long long int ByteSwap64(unsigned long long int x) { -#if 0 - x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL); - x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL); - return (x>>32) | (x<<32); + register union { __extension__ uint64_t __ll; + uint32_t __l[2]; } __x; + asm("xchgl %0,%1": + "=r"(__x.__l[0]),"=r"(__x.__l[1]): + "0"(bswap_32((unsigned long)x)),"1"(bswap_32((unsigned long)(x>>32)))); + return __x.__ll; +} +#define bswap_64(x) ByteSwap64(x) + +#elif defined(ARCH_SH4) + +static inline uint16_t ByteSwap16(uint16_t x) { + __asm__("swap.b %0,%0":"=r"(x):"0"(x)); + return x; +} + +static inline uint32_t ByteSwap32(uint32_t x) { + __asm__( + "swap.b %0,%0\n" + "swap.w %0,%0\n" + "swap.b %0,%0\n" + :"=r"(x):"0"(x)); + return x; +} + +#define bswap_16(x) ByteSwap16(x) +#define bswap_32(x) ByteSwap32(x) + +static inline uint64_t ByteSwap64(uint64_t x) +{ + union { + uint64_t ll; + struct { + uint32_t l,h; + } l; + } r; + r.l.l = bswap_32 (x); + r.l.h = bswap_32 (x>>32); + return r.ll; +} +#define bswap_64(x) ByteSwap64(x) + #else - union { + +#define bswap_16(x) (((x) & 0x00ff) << 8 | ((x) & 0xff00) >> 8) + + +// code from bits/byteswap.h (C) 1997, 1998 Free Software Foundation, Inc. +#define bswap_32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) + +static inline uint64_t ByteSwap64(uint64_t x) +{ + union { uint64_t ll; - uint32_t l[2]; + uint32_t l[2]; } w, r; w.ll = x; r.l[0] = bswap_32 (w.l[1]); r.l[1] = bswap_32 (w.l[0]); return r.ll; -#endif } -#endif +#define bswap_64(x) ByteSwap64(x) + +#endif /* !ARCH_X86 */ + +#endif /* !HAVE_BYTESWAP_H */ -// be2me ... big-endian to machine-endian -// le2me ... little-endian to machine-endian +// be2me ... BigEndian to MachineEndian +// le2me ... LittleEndian to MachineEndian -#ifdef WORDS_BIGENDIAN +#ifdef ROCKBOX_BIG_ENDIAN #define be2me_16(x) (x) #define be2me_32(x) (x) #define be2me_64(x) (x) @@ -96,4 +147,4 @@ static inline uint64_t bswap_64(uint64_t x) #define le2me_64(x) (x) #endif -#endif /* AVUTIL_BSWAP_H */ +#endif /* __BSWAP_H__ */ -- cgit v1.2.3