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/* $Id: plc.h 3553 2011-05-05 06:14:19Z nanang $ */
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* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
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* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef __PJMEDIA_PLC_H__
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#define __PJMEDIA_PLC_H__
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* @brief Packet Lost Concealment (PLC) API.
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#include <pjmedia/types.h>
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* @defgroup PJMED_PLC Packet Lost Concealment (PLC)
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* @ingroup PJMEDIA_FRAME_OP
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* @brief Packet lost compensation algorithm
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* This section describes PJMEDIA's implementation of Packet Lost
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* Concealment algorithm. This algorithm is used to implement PLC for
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* codecs that do not have built-in support for one (e.g. G.711 or GSM
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* The PLC algorithm (either built-in or external) is embedded in
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* PJMEDIA codec instance, and application can conceal lost frames
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* by calling <b><tt>recover()</tt></b> member of the codec's member
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* operation (#pjmedia_codec_op).
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* See also @ref plc_codec for more info.
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* Opaque declaration for PLC.
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typedef struct pjmedia_plc pjmedia_plc;
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* Create PLC session. This function will select the PLC algorithm to
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* use based on the arguments.
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* @param pool Pool to allocate memory for the PLC.
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* @param clock_rate Media sampling rate.
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* @param samples_per_frame Number of samples per frame.
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* @param options Must be zero for now.
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* @param p_plc Pointer to receive the PLC instance.
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* @return PJ_SUCCESS on success.
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PJ_DECL(pj_status_t) pjmedia_plc_create( pj_pool_t *pool,
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unsigned samples_per_frame,
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* Save a good frame to PLC.
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* @param plc The PLC session.
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* @param frame The good frame to be stored to PLC. This frame
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* must have the same length as the configured
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* @return PJ_SUCCESS on success.
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PJ_DECL(pj_status_t) pjmedia_plc_save( pjmedia_plc *plc,
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* Generate a replacement for lost frame.
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* @param plc The PLC session.
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* @param frame Buffer to receive the generated frame. This buffer
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* must be able to store the frame.
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* @return PJ_SUCCESS on success.
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PJ_DECL(pj_status_t) pjmedia_plc_generate( pjmedia_plc *plc,
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#endif /* __PJMEDIA_PLC_H__ */