FFmpeg: libavutil/sh4/bswap.h Source File

00001 /*
00002  * This file is part of FFmpeg.
00003  *
00004  * FFmpeg is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * FFmpeg is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with FFmpeg; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00017  */
00018 
00024 #ifndef AVUTIL_SH4_BSWAP_H
00025 #define AVUTIL_SH4_BSWAP_H
00026 
00027 #include <stdint.h>
00028 #include "config.h"
00029 #include "libavutil/attributes.h"
00030 
00031 #define av_bswap16 av_bswap16
00032 static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
00033 {
00034     __asm__("swap.b %0,%0" : "+r"(x));
00035     return x;
00036 }
00037 
00038 #define av_bswap32 av_bswap32
00039 static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
00040 {
00041     __asm__("swap.b %0,%0\n"
00042             "swap.w %0,%0\n"
00043             "swap.b %0,%0\n"
00044             : "+r"(x));
00045     return x;
00046 }
00047 
00048 #endif /* AVUTIL_SH4_BSWAP_H */