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Diffstat (limited to 'scx_jitterbuf.h')
-rw-r--r-- | scx_jitterbuf.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/scx_jitterbuf.h b/scx_jitterbuf.h new file mode 100644 index 000000000..334446294 --- /dev/null +++ b/scx_jitterbuf.h @@ -0,0 +1,93 @@ +/* + * scx_jitterbuf: jitterbuffering algorithm + * + * Copyright (C) 2005, Attractel OOD + * + * Contributors: + * Slav Klenov <slav@securax.org> + * + * Copyright on this file is disclaimed to Digium for inclusion in Asterisk + * + * 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 Jitterbuffering algorithm. + * + */ + +#ifndef _SCX_JITTERBUF_H_ +#define _SCX_JITTERBUF_H_ + +#if defined(__cplusplus) || defined(c_plusplus) +extern "C" { +#endif + + +/* return codes */ +#define SCX_JB_OK 0 +#define SCX_JB_DROP 1 +#define SCX_JB_INTERP 2 +#define SCX_JB_NOFRAME 3 + + +/* defaults */ +#define SCX_JB_SIZE_DEFAULT 200 +#define SCX_JB_RESYNCH_THRESHOLD_DEFAULT 1000 + + +/* jb configuration properties */ +struct scx_jb_conf +{ + long jbsize; + long resync_threshold; +}; + + +struct scx_jb_frame +{ + void *data; + long ts; + long ms; + long delivery; + struct scx_jb_frame *next; + struct scx_jb_frame *prev; +}; + + +struct scx_jb; + + +/* jb interface */ + +struct scx_jb * scx_jb_new(struct scx_jb_conf *conf); + +void scx_jb_destroy(struct scx_jb *jb); + +int scx_jb_put_first(struct scx_jb *jb, void *data, long ms, long ts, long now); + +int scx_jb_put(struct scx_jb *jb, void *data, long ms, long ts, long now); + +int scx_jb_get(struct scx_jb *jb, struct scx_jb_frame *frame, long now, long interpl); + +long scx_jb_next(struct scx_jb *jb); + +int scx_jb_remove(struct scx_jb *jb, struct scx_jb_frame *frameout); + +void scx_jb_set_force_resynch(struct scx_jb *jb); + + +#if defined(__cplusplus) || defined(c_plusplus) +} +#endif + +#endif /* _SCX_JITTERBUF_H_ */ |