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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 MSILBCENCODER_H
#define MSILBCENCODER_H
#include "mscodec.h"
#include <iLBC_encode.h>
#define ILBC_BITS_IN_COMPRESSED_FRAME 400
int
ilbc_read_16bit_samples(gint16 int16samples[], float speech[], int n);
int
ilbc_write_16bit_samples(gint16 int16samples[], float speech[], int n);
void
ilbc_write_bits(unsigned char *data, unsigned char *bits, int nbytes);
int
ilbc_read_bits(unsigned char *data, unsigned char *bits, int nbytes);
/*this is the class that implements a ILBCencoder filter*/
#define MSILBCENCODER_MAX_INPUTS 1 /* max output per filter*/
typedef struct _MSILBCEncoder
{
/* the MSILBCEncoder derivates from MSFilter, so the MSFilter object MUST be the first of the MSILBCEncoder object
in order to the object mechanism to work*/
MSFilter filter;
MSFifo *f_inputs[MSILBCENCODER_MAX_INPUTS];
MSQueue *q_outputs[MSILBCENCODER_MAX_INPUTS];
iLBC_Enc_Inst_t ilbc_enc;
int ilbc_encoded_bytes;
int bitrate;
int ms_per_frame;
int samples_per_frame;
int bytes_per_compressed_frame;
} MSILBCEncoder;
typedef struct _MSILBCEncoderClass
{
/* the MSILBCEncoder derivates from MSFilter, so the MSFilter class MUST be the first of the MSILBCEncoder class
in order to the class mechanism to work*/
MSFilterClass tqparent_class;
} MSILBCEncoderClass;
/* PUBLIC */
#define MS_ILBCENCODER(filter) ((MSILBCEncoder*)(filter))
#define MS_ILBCENCODER_CLASS(klass) ((MSILBCEncoderClass*)(klass))
MSFilter * ms_ilbc_encoder_new(void);
/* FOR INTERNAL USE*/
void ms_ilbc_encoder_init(MSILBCEncoder *r);
void ms_ilbc_encoder_class_init(MSILBCEncoderClass *klass);
void ms_ilbc_encoder_destroy( MSILBCEncoder *obj);
void ms_ilbc_encoder_process(MSILBCEncoder *r);
#define ILBC_MAX_BYTES_PER_COMPRESSED_FRAME NO_OF_BYTES_30MS
#define ILBC_MAX_SAMPLES_PER_FRAME BLOCKL_30MS
#endif
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