Sat Aug 6 00:39:32 2011

Asterisk developer's documentation


transcap.h

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Matthew Fredrickson <creslin@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  * \brief General Asterisk channel transcoding definitions.
00021  */
00022 
00023 #ifndef _ASTERISK_TRANSCAP_H
00024 #define _ASTERISK_TRANSCAP_H
00025 
00026 /* These definitions are taken directly out of libpri.h and used here.
00027  * DO NOT change them as it will cause unexpected behavior in channels
00028  * that utilize these fields.
00029  */
00030 
00031 #define AST_TRANS_CAP_SPEECH           0x0
00032 #define AST_TRANS_CAP_DIGITAL          0x08
00033 #define AST_TRANS_CAP_RESTRICTED_DIGITAL     0x09
00034 #define AST_TRANS_CAP_3_1K_AUDIO       0x10
00035 #define AST_TRANS_CAP_7K_AUDIO            0x11  /* Depriciated ITU Q.931 (05/1998)*/
00036 #define AST_TRANS_CAP_DIGITAL_W_TONES        0x11
00037 #define AST_TRANS_CAP_VIDEO            0x18
00038 
00039 #define IS_DIGITAL(cap)\
00040    (cap) & AST_TRANS_CAP_DIGITAL ? 1 : 0
00041 
00042 #endif /* _ASTERISK_TRANSCAP_H */

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