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https://github.com/servalproject/serval-dna.git
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58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2005, Anthony Minessale II
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*
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* Anthony Minessale <anthmct@yahoo.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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* \brief A machine to gather up arbitrary frames and convert them
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* to raw slinear on demand.
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*/
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#ifndef _ASTERISK_SLINFACTORY_H
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#define _ASTERISK_SLINFACTORY_H
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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#define AST_SLINFACTORY_MAX_HOLD 1280
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struct ast_slinfactory {
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AST_LIST_HEAD_NOLOCK(, ast_frame) queue;
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struct ast_trans_pvt *trans;
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short hold[AST_SLINFACTORY_MAX_HOLD];
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short *offset;
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size_t holdlen; /*!< in samples */
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unsigned int size; /*!< in samples */
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unsigned int format;
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};
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void ast_slinfactory_init(struct ast_slinfactory *sf);
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void ast_slinfactory_destroy(struct ast_slinfactory *sf);
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int ast_slinfactory_feed(struct ast_slinfactory *sf, struct ast_frame *f);
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int ast_slinfactory_read(struct ast_slinfactory *sf, short *buf, size_t samples);
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unsigned int ast_slinfactory_available(const struct ast_slinfactory *sf);
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void ast_slinfactory_flush(struct ast_slinfactory *sf);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif /* _ASTERISK_SLINFACTORY_H */
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