| /* libFLAC - Free Lossless Audio Codec library |
| * Copyright (C) 2012-2014 Xiph.org Foundation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * - Neither the name of the Xiph.org Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /* It is assumed that this header will be included after "config.h". */ |
| |
| #if HAVE_BSWAP32 /* GCC and Clang */ |
| |
| /* GCC prior to 4.8 didn't provide bswap16 on x86_64 */ |
| #if ! HAVE_BSWAP16 |
| static inline unsigned short __builtin_bswap16(unsigned short a) |
| { |
| return (a<<8)|(a>>8); |
| } |
| #endif |
| |
| #define ENDSWAP_16(x) (__builtin_bswap16 (x)) |
| #define ENDSWAP_32(x) (__builtin_bswap32 (x)) |
| |
| #elif defined _MSC_VER /* Windows. Apparently in <stdlib.h>. */ |
| |
| #define ENDSWAP_16(x) (_byteswap_ushort (x)) |
| #define ENDSWAP_32(x) (_byteswap_ulong (x)) |
| |
| #elif defined HAVE_BYTESWAP_H /* Linux */ |
| |
| #include <byteswap.h> |
| |
| #define ENDSWAP_16(x) (bswap_16 (x)) |
| #define ENDSWAP_32(x) (bswap_32 (x)) |
| |
| #else |
| |
| #define ENDSWAP_16(x) ((((x) >> 8) & 0xFF) | (((x) & 0xFF) << 8)) |
| #define ENDSWAP_32(x) ((((x) >> 24) & 0xFF) | (((x) >> 8) & 0xFF00) | (((x) & 0xFF00) << 8) | (((x) & 0xFF) << 24)) |
| |
| #endif |
| |
| |
| /* Host to little-endian byte swapping. */ |
| #if CPU_IS_BIG_ENDIAN |
| |
| #define H2LE_16(x) ENDSWAP_16 (x) |
| #define H2LE_32(x) ENDSWAP_32 (x) |
| |
| #else |
| |
| #define H2LE_16(x) (x) |
| #define H2LE_32(x) (x) |
| |
| #endif |