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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Anthony Minessale II
*
* Anthony Minessale <anthmct@yahoo.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief A machine to gather up arbitrary frames and convert them
* to raw slinear on demand.
*/
#ifndef _ASTERISK_SLINFACTORY_H
#define _ASTERISK_SLINFACTORY_H
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
struct ast_slinfactory {
AST_LIST_HEAD_NOLOCK(, ast_frame) queue;
struct ast_trans_pvt *trans;
short hold[1280];
short *offset;
size_t holdlen; /*!< in samples */
unsigned int size; /*!< in samples */
unsigned int format;
};
void ast_slinfactory_init(struct ast_slinfactory *sf);
/*!
* \brief Destroy the contents of a slinfactory
*
* \arg sf the slinfactory that is no longer needed
*
* This function will free any memory allocated for the contents of the
* slinfactory. It does not free the slinfactory itself. If the sf is
* malloc'd, then it must be explicitly free'd after calling this function.
*
* \return nothing
*/
void ast_slinfactory_destroy(struct ast_slinfactory *sf);
int ast_slinfactory_feed(struct ast_slinfactory *sf, struct ast_frame *f);
int ast_slinfactory_read(struct ast_slinfactory *sf, short *buf, size_t samples);
unsigned int ast_slinfactory_available(const struct ast_slinfactory *sf);
void ast_slinfactory_flush(struct ast_slinfactory *sf);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif /* _ASTERISK_SLINFACTORY_H */
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