1 /** 2 * \file include/conv.h 3 * \brief Application interface library for the ALSA driver 4 * \author Jaroslav Kysela <perex (at) perex.cz> 5 * \author Abramo Bagnara <abramo (at) alsa-project.org> 6 * \author Takashi Iwai <tiwai (at) suse.de> 7 * \date 1998-2001 8 * 9 * Application interface library for the ALSA driver 10 */ 11 /* 12 * This library is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU Lesser General Public License as 14 * published by the Free Software Foundation; either version 2.1 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU Lesser General Public License for more details. 21 * 22 * You should have received a copy of the GNU Lesser General Public 23 * License along with this library; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 */ 27 28 #ifndef __ALSA_CONV_H 29 #define __ALSA_CONV_H 30 31 /** 32 * \defgroup BConv Binary Value Conversion 33 * Helper macros to convert binary values to/from a specific byte order. 34 * \{ 35 */ 36 37 /** Converts a 16-bit value from host to little endian byte order. */ 38 #define snd_host_to_LE_16(val) __cpu_to_le16(val) 39 /** Converts a 16-bit value from little endian to host byte order. */ 40 #define snd_LE_to_host_16(val) __le16_to_cpu(val) 41 /** Converts a 32-bit value from host to little endian byte order. */ 42 #define snd_host_to_LE_32(val) __cpu_to_le32(val) 43 /** Converts a 32-bit value from little endian to host byte order. */ 44 #define snd_LE_to_host_32(val) __le32_to_cpu(val) 45 /** Converts a 16-bit value from host to big endian byte order. */ 46 #define snd_host_to_BE_16(val) __cpu_to_be16(val) 47 /** Converts a 16-bit value from big endian to host byte order. */ 48 #define snd_BE_to_host_16(val) __be16_to_cpu(val) 49 /** Converts a 32-bit value from host to big endian byte order. */ 50 #define snd_host_to_BE_32(val) __cpu_to_be32(val) 51 /** Converts a 32-bit value from big endian to host byte order. */ 52 #define snd_BE_to_host_32(val) __be32_to_cpu(val) 53 54 /** \} */ 55 56 #endif /* __ALSA_CONV_H */ 57 58
