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gsmcodec.cpp
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Emmanuel Milou authoredEmmanuel Milou authored
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gsmcodec.cpp 2.09 KiB
/**
* Copyright (C) 2004-2005 Savoir-Faire Linux inc.
* Author: Yan Morin <yan.morin@savoirfairelinux.com>
* Author: Laurielle Lea <laurielle.lea@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <gsm/gsm.h>
#include "audiocodec.h"
#include "../global.h"
class Gsm : public AudioCodec {
public:
// 3 GSM A 8000 1 [RFC3551]
Gsm(int payload = 0)
: AudioCodec(payload, "GSM")
{
_description = "GSM";
_clockRate = 8000;
_channel = 1;
if (!(_decode_gsmhandle = gsm_create() ))
_debug("ERROR: decode_gsm_create\n");
if (!(_encode_gsmhandle = gsm_create() ))
_debug("AudioCodec: ERROR: encode_gsm_create\n");
}
~Gsm (void)
{
gsm_destroy(_decode_gsmhandle);
gsm_destroy(_encode_gsmhandle);
}
virtual int codecDecode (short *dst, unsigned char *src, unsigned int size)
{
(void)size;
if (gsm_decode(_decode_gsmhandle, (gsm_byte*)src, (gsm_signal*)dst) < 0) {
_debug("ERROR: gsm_decode\n");
}
return 320;
}
virtual int codecEncode (unsigned char *dst, short *src, unsigned int size)
{
(void)size;
gsm_encode(_encode_gsmhandle, (gsm_signal*)src, (gsm_byte*)dst);
return 33;
}
virtual void test()
{
printf("MOn OSTIE GSM!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
}
private:
gsm _decode_gsmhandle;
gsm _encode_gsmhandle;
};
// the class factories
extern "C" AudioCodec* create_gsm() {
return new Gsm();
}
extern "C" void destroy_gsm(AudioCodec* a) {
delete a;
}