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/*
The mediastreamer library aims at providing modular media processing and I/O
for linphone, but also for any telephony application.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MSALAWDECODER_H
#define MSALAWDECODER_H
#include <msfilter.h>
#include <mscodec.h>
/*this is the class that implements a ALAWdecoder filter*/
#define MSALAWDECODER_MAX_INPUTS 1 /* max output per filter*/
typedef struct _MSALAWDecoder
{
/* the MSALAWDecoder derivates from MSFilter, so the MSFilter object MUST be the first of the MSALAWDecoder object
in order to the object mechanism to work*/
MSFilter filter;
MSFifo *f_inputs[MSALAWDECODER_MAX_INPUTS];
MSFifo *f_outputs[MSALAWDECODER_MAX_INPUTS];
} MSALAWDecoder;
typedef struct _MSALAWDecoderClass
{
/* the MSALAWDecoder derivates from MSFilter, so the MSFilter class MUST be the first of the MSALAWDecoder class
in order to the class mechanism to work*/
MSFilterClass parent_class;
} MSALAWDecoderClass;
/* PUBLIC */
#define MS_ALAWDECODER(filter) ((MSALAWDecoder*)(filter))
#define MS_ALAWDECODER_CLASS(klass) ((MSALAWDecoderClass*)(klass))
MSFilter * ms_ALAWdecoder_new(void);
/* FOR INTERNAL USE*/
void ms_ALAWdecoder_init(MSALAWDecoder *r);
void ms_ALAWdecoder_class_init(MSALAWDecoderClass *klass);
void ms_ALAWdecoder_destroy( MSALAWDecoder *obj);
void ms_ALAWdecoder_process(MSALAWDecoder *r);
/* tuning parameters :*/
#define ALAW_DECODER_WMAXGRAN 320
#define ALAW_DECODER_RMAXGRAN 160
extern MSCodecInfo ALAWinfo;
#endif
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