mirror of
https://gitlab.linphone.org/BC/public/linphone-iphone.git
synced 2026-01-22 05:38:14 +00:00
2b8200409c
git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@1 3f6dc0c8-ddfe-455d-9043-3cd528dc4637
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
|
|
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
|
|
#include "msGSMdecoder.h"
|
|
|
|
extern MSFilter * ms_GSMencoder_new(void);
|
|
|
|
MSCodecInfo GSMinfo={
|
|
{
|
|
"GSM codec",
|
|
0,
|
|
MS_FILTER_AUDIO_CODEC,
|
|
ms_GSMencoder_new,
|
|
"This is the codec widely used in european mobile phones. This implementation was done by "
|
|
"Jutta Degener and Carsten Bormann."
|
|
},
|
|
ms_GSMencoder_new,
|
|
ms_GSMdecoder_new,
|
|
320,
|
|
33,
|
|
13800,
|
|
8000,
|
|
3,
|
|
"GSM",
|
|
1,
|
|
1,
|
|
};
|
|
|
|
static MSGSMDecoderClass *ms_GSMdecoder_class=NULL;
|
|
|
|
MSFilter * ms_GSMdecoder_new(void)
|
|
{
|
|
MSGSMDecoder *r;
|
|
|
|
r=g_new(MSGSMDecoder,1);
|
|
ms_GSMdecoder_init(r);
|
|
if (ms_GSMdecoder_class==NULL)
|
|
{
|
|
ms_GSMdecoder_class=g_new(MSGSMDecoderClass,1);
|
|
ms_GSMdecoder_class_init(ms_GSMdecoder_class);
|
|
}
|
|
MS_FILTER(r)->klass=MS_FILTER_CLASS(ms_GSMdecoder_class);
|
|
return(MS_FILTER(r));
|
|
}
|
|
|
|
|
|
/* FOR INTERNAL USE*/
|
|
void ms_GSMdecoder_init(MSGSMDecoder *r)
|
|
{
|
|
ms_filter_init(MS_FILTER(r));
|
|
MS_FILTER(r)->inqueues=r->q_inputs;
|
|
MS_FILTER(r)->outfifos=r->f_outputs;
|
|
MS_FILTER(r)->r_mingran=33;
|
|
memset(r->q_inputs,0,sizeof(MSFifo*)*MSGSMDECODER_MAX_INPUTS);
|
|
memset(r->f_outputs,0,sizeof(MSFifo*)*MSGSMDECODER_MAX_INPUTS);
|
|
r->gsm_handle=gsm_create();
|
|
}
|
|
|
|
void ms_GSMdecoder_class_init(MSGSMDecoderClass *klass)
|
|
{
|
|
ms_filter_class_init(MS_FILTER_CLASS(klass));
|
|
ms_filter_class_set_name(MS_FILTER_CLASS(klass),"GSMDecoder");
|
|
MS_FILTER_CLASS(klass)->info=(MSFilterInfo*)&GSMinfo;
|
|
MS_FILTER_CLASS(klass)->max_qinputs=MSGSMDECODER_MAX_INPUTS;
|
|
MS_FILTER_CLASS(klass)->max_foutputs=MSGSMDECODER_MAX_INPUTS;
|
|
MS_FILTER_CLASS(klass)->w_maxgran=2*160;
|
|
MS_FILTER_CLASS(klass)->destroy=(MSFilterDestroyFunc)ms_GSMdecoder_destroy;
|
|
MS_FILTER_CLASS(klass)->process=(MSFilterProcessFunc)ms_GSMdecoder_process;
|
|
}
|
|
|
|
void ms_GSMdecoder_process(MSGSMDecoder *r)
|
|
{
|
|
MSFifo *fo;
|
|
MSQueue *qi;
|
|
void *d;
|
|
MSMessage *inm;
|
|
|
|
/* process output fifos, but there is only one for this class of filter*/
|
|
|
|
qi=r->q_inputs[0];
|
|
fo=r->f_outputs[0];
|
|
inm=ms_queue_get(qi);
|
|
ms_fifo_get_write_ptr(fo,160*2,&d);
|
|
if (d!=NULL)
|
|
gsm_decode(r->gsm_handle,(guchar*)inm->data,(gsm_signal*)d);
|
|
ms_message_destroy(inm);
|
|
}
|
|
|
|
void ms_GSMdecoder_uninit(MSGSMDecoder *obj)
|
|
{
|
|
gsm_destroy(obj->gsm_handle);
|
|
}
|
|
|
|
void ms_GSMdecoder_destroy( MSGSMDecoder *obj)
|
|
{
|
|
ms_GSMdecoder_uninit(obj);
|
|
g_free(obj);
|
|
}
|