1/* 2 * Copyright (C) 2007 Marc Hoffman 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21/** 22 * @file 23 * byte swapping routines 24 */ 25 26#ifndef AVUTIL_BFIN_BSWAP_H 27#define AVUTIL_BFIN_BSWAP_H 28 29#include <stdint.h> 30#include "config.h" 31#include "libavutil/attributes.h" 32 33#define bswap_32 bswap_32 34static av_always_inline av_const uint32_t bswap_32(uint32_t x) 35{ 36 unsigned tmp; 37 __asm__("%1 = %0 >> 8 (V); \n\t" 38 "%0 = %0 << 8 (V); \n\t" 39 "%0 = %0 | %1; \n\t" 40 "%0 = PACK(%0.L, %0.H); \n\t" 41 : "+d"(x), "=&d"(tmp)); 42 return x; 43} 44 45#endif /* AVUTIL_BFIN_BSWAP_H */ 46