diff options
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/arm/bswap.h | 51 | ||||
| -rw-r--r-- | libavutil/bfin/bswap.h | 45 | ||||
| -rw-r--r-- | libavutil/bswap.h | 59 | ||||
| -rw-r--r-- | libavutil/sh4/bswap.h | 48 | ||||
| -rw-r--r-- | libavutil/x86/bswap.h | 61 |
5 files changed, 221 insertions, 43 deletions
diff --git a/libavutil/arm/bswap.h b/libavutil/arm/bswap.h new file mode 100644 index 0000000..deb7394 --- /dev/null +++ b/libavutil/arm/bswap.h @@ -0,0 +1,51 @@ +/* + * 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 AVUTIL_ARM_BSWAP_H +#define AVUTIL_ARM_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#ifdef HAVE_ARMV6 +#define bswap_16 bswap_16 +static av_always_inline av_const uint16_t bswap_16(uint16_t x) +{ + __asm__("rev16 %0, %0" : "+r"(x)); + return x; +} +#endif + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ +#ifdef HAVE_ARMV6 + __asm__("rev %0, %0" : "+r"(x)); +#else + uint32_t t; + __asm__ ("eor %1, %0, %0, ror #16 \n\t" + "bic %1, %1, #0xFF0000 \n\t" + "mov %0, %0, ror #8 \n\t" + "eor %0, %0, %1, lsr #8 \n\t" + : "+r"(x), "=&r"(t)); +#endif /* HAVE_ARMV6 */ + return x; +} + +#endif /* AVUTIL_ARM_BSWAP_H */ diff --git a/libavutil/bfin/bswap.h b/libavutil/bfin/bswap.h new file mode 100644 index 0000000..bfd850e --- /dev/null +++ b/libavutil/bfin/bswap.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2007 Marc Hoffman + * + * 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 bswap.h + * byte swapping routines + */ + +#ifndef AVUTIL_BFIN_BSWAP_H +#define AVUTIL_BFIN_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ + unsigned tmp; + __asm__("%1 = %0 >> 8 (V); \n\t" + "%0 = %0 << 8 (V); \n\t" + "%0 = %0 | %1; \n\t" + "%0 = PACK(%0.L, %0.H); \n\t" + : "+d"(x), "=&d"(tmp)); + return x; +} + +#endif /* AVUTIL_BFIN_BSWAP_H */ diff --git a/libavutil/bswap.h b/libavutil/bswap.h index 3d0a2a7..c14676e 100644 --- a/libavutil/bswap.h +++ b/libavutil/bswap.h @@ -30,68 +30,40 @@ #include "config.h" #include "common.h" +#if defined(ARCH_ARMV4L) +# include "arm/bswap.h" +#elif defined(ARCH_BFIN) +# include "bfin/bswap.h" +#elif defined(ARCH_SH4) +# include "sh4/bswap.h" +#elif defined(ARCH_X86) +# include "x86/bswap.h" +#endif + +#ifndef bswap_16 static av_always_inline av_const uint16_t bswap_16(uint16_t x) { -#if defined(ARCH_X86) - __asm__("rorw $8, %0" : "+r"(x)); -#elif defined(ARCH_SH4) - __asm__("swap.b %0,%0" : "=r"(x) : "0"(x)); -#elif defined(HAVE_ARMV6) - __asm__("rev16 %0, %0" : "+r"(x)); -#else x= (x>>8) | (x<<8); -#endif return x; } +#endif +#ifndef bswap_32 static av_always_inline av_const uint32_t bswap_32(uint32_t x) { -#if defined(ARCH_X86) -#ifdef HAVE_BSWAP - __asm__("bswap %0" : "+r" (x)); -#else - __asm__("rorw $8, %w0 \n\t" - "rorl $16, %0 \n\t" - "rorw $8, %w0" - : "+r"(x)); -#endif -#elif defined(ARCH_SH4) - __asm__("swap.b %0,%0\n" - "swap.w %0,%0\n" - "swap.b %0,%0\n" - : "=r"(x) : "0"(x)); -#elif defined(HAVE_ARMV6) - __asm__("rev %0, %0" : "+r"(x)); -#elif defined(ARCH_ARMV4L) - uint32_t t; - __asm__ ("eor %1, %0, %0, ror #16 \n\t" - "bic %1, %1, #0xFF0000 \n\t" - "mov %0, %0, ror #8 \n\t" - "eor %0, %0, %1, lsr #8 \n\t" - : "+r"(x), "=&r"(t)); -#elif defined(ARCH_BFIN) - unsigned tmp; - __asm__("%1 = %0 >> 8 (V); \n\t" - "%0 = %0 << 8 (V); \n\t" - "%0 = %0 | %1; \n\t" - "%0 = PACK(%0.L, %0.H); \n\t" - : "+d"(x), "=&d"(tmp)); -#else x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF); x= (x>>16) | (x<<16); -#endif return x; } +#endif +#ifndef bswap_64 static inline uint64_t av_const bswap_64(uint64_t x) { #if 0 x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL); x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL); return (x>>32) | (x<<32); -#elif defined(ARCH_X86_64) - __asm__("bswap %0": "=r" (x) : "0" (x)); - return x; #else union { uint64_t ll; @@ -103,6 +75,7 @@ static inline uint64_t av_const bswap_64(uint64_t x) return r.ll; #endif } +#endif // be2me ... BigEndian to MachineEndian // le2me ... LittleEndian to MachineEndian diff --git a/libavutil/sh4/bswap.h b/libavutil/sh4/bswap.h new file mode 100644 index 0000000..8e3c346 --- /dev/null +++ b/libavutil/sh4/bswap.h @@ -0,0 +1,48 @@ +/* + * 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 bswap.h + * byte swapping routines + */ + +#ifndef AVUTIL_SH4_BSWAP_H +#define AVUTIL_SH4_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#define bswap_16 bswap_16 +static av_always_inline av_const uint16_t bswap_16(uint16_t x) +{ + __asm__("swap.b %0,%0" : "+r"(x)); + return x; +} + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ + __asm__("swap.b %0,%0\n" + "swap.w %0,%0\n" + "swap.b %0,%0\n" + : "+r"(x)); + return x; +} + +#endif /* AVUTIL_SH4_BSWAP_H */ diff --git a/libavutil/x86/bswap.h b/libavutil/x86/bswap.h new file mode 100644 index 0000000..c52b529 --- /dev/null +++ b/libavutil/x86/bswap.h @@ -0,0 +1,61 @@ +/* + * 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 bswap.h + * byte swapping routines + */ + +#ifndef AVUTIL_X86_BSWAP_H +#define AVUTIL_X86_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#define bswap_16 bswap_16 +static av_always_inline av_const uint16_t bswap_16(uint16_t x) +{ + __asm__("rorw $8, %0" : "+r"(x)); + return x; +} + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ +#ifdef HAVE_BSWAP + __asm__("bswap %0" : "+r" (x)); +#else + __asm__("rorw $8, %w0 \n\t" + "rorl $16, %0 \n\t" + "rorw $8, %w0" + : "+r"(x)); +#endif + return x; +} + +#ifdef ARCH_X86_64 +#define bswap_64 bswap_64 +static inline uint64_t av_const bswap_64(uint64_t x) +{ + __asm__("bswap %0": "=r" (x) : "0" (x)); + return x; +} +#endif + +#endif /* AVUTIL_X86_BSWAP_H */ |
