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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 MSALAWENCODER_H
#define MSALAWENCODER_H
#include "mscodec.h"
/*this is the class that implements a ALAWencoder filter*/
#define MSALAWENCODER_MAX_INPUTS 1 /* max output per filter*/
typedef struct _MSALAWEncoder
{
/* the MSALAWEncoder derivates from MSFilter, so the MSFilter object MUST be the first of the MSALAWEncoder object
in order to the object mechanism to work*/
MSFilter filter;
MSFifo *f_inputs[MSALAWENCODER_MAX_INPUTS];
MSFifo *f_outputs[MSALAWENCODER_MAX_INPUTS];
} MSALAWEncoder;
typedef struct _MSALAWEncoderClass
{
/* the MSALAWEncoder derivates from MSFilter, so the MSFilter class MUST be the first of the MSALAWEncoder class
in order to the class mechanism to work*/
MSFilterClass tqparent_class;
} MSALAWEncoderClass;
/* PUBLIC */
#define MS_ALAWENCODER(filter) ((MSALAWEncoder*)(filter))
#define MS_ALAWENCODER_CLASS(klass) ((MSALAWEncoderClass*)(klass))
MSFilter * ms_ALAWencoder_new(void);
/* FOR INTERNAL USE*/
void ms_ALAWencoder_init(MSALAWEncoder *r);
void ms_ALAWencoder_class_init(MSALAWEncoderClass *klass);
void ms_ALAWencoder_destroy( MSALAWEncoder *obj);
void ms_ALAWencoder_process(MSALAWEncoder *r);
/* tuning parameters :*/
#define ALAW_ENCODER_WMAXGRAN 160
#define ALAW_ENCODER_RMAXGRAN 320
#endif
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