comparison: src/mediastreamer/msGSMencoder.c
src/mediastreamer/msGSMencoder.c
- changeset 12024
- 5a87b77fcc3c
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| 12023:fcfb3f1c8125 | 12024:5a87b77fcc3c |
|---|---|
| 1 /* | |
| 2 The mediastreamer library aims at providing modular media processing and I/O | |
| 3 for linphone, but also for any telephony application. | |
| 4 Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org | |
| 5 | |
| 6 This library is free software; you can redistribute it and/or | |
| 7 modify it under the terms of the GNU Lesser General Public | |
| 8 License as published by the Free Software Foundation; either | |
| 9 version 2.1 of the License, or (at your option) any later version. | |
| 10 | |
| 11 This library is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Lesser General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU Lesser General Public | |
| 17 License along with this library; if not, write to the Free Software | |
| 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 */ | |
| 20 | |
| 21 | |
| 22 #include "msGSMencoder.h" | |
| 23 #include "mscodec.h" | |
| 24 | |
| 25 extern MSCodecInfo GSMinfo; | |
| 26 | |
| 27 static MSGSMEncoderClass *ms_GSMencoder_class=NULL; | |
| 28 | |
| 29 MSFilter * ms_GSMencoder_new(void) | |
| 30 { | |
| 31 MSGSMEncoder *r; | |
| 32 | |
| 33 r=g_new(MSGSMEncoder,1); | |
| 34 ms_GSMencoder_init(r); | |
| 35 if (ms_GSMencoder_class==NULL) | |
| 36 { | |
| 37 ms_GSMencoder_class=g_new(MSGSMEncoderClass,1); | |
| 38 ms_GSMencoder_class_init(ms_GSMencoder_class); | |
| 39 } | |
| 40 MS_FILTER(r)->klass=MS_FILTER_CLASS(ms_GSMencoder_class); | |
| 41 return(MS_FILTER(r)); | |
| 42 } | |
| 43 | |
| 44 | |
| 45 /* FOR INTERNAL USE*/ | |
| 46 void ms_GSMencoder_init(MSGSMEncoder *r) | |
| 47 { | |
| 48 ms_filter_init(MS_FILTER(r)); | |
| 49 MS_FILTER(r)->infifos=r->f_inputs; | |
| 50 MS_FILTER(r)->outfifos=r->f_outputs; | |
| 51 MS_FILTER(r)->r_mingran=2*160; | |
| 52 memset(r->f_inputs,0,sizeof(MSFifo*)*MSGSMENCODER_MAX_INPUTS); | |
| 53 memset(r->f_outputs,0,sizeof(MSFifo*)*MSGSMENCODER_MAX_INPUTS); | |
| 54 r->gsm_handle=gsm_create(); | |
| 55 } | |
| 56 | |
| 57 void ms_GSMencoder_class_init(MSGSMEncoderClass *klass) | |
| 58 { | |
| 59 ms_filter_class_init(MS_FILTER_CLASS(klass)); | |
| 60 ms_filter_class_set_name(MS_FILTER_CLASS(klass),"GSMEncoder"); | |
| 61 MS_FILTER_CLASS(klass)->max_finputs=MSGSMENCODER_MAX_INPUTS; | |
| 62 MS_FILTER_CLASS(klass)->max_foutputs=MSGSMENCODER_MAX_INPUTS; | |
| 63 MS_FILTER_CLASS(klass)->r_maxgran=2*160; | |
| 64 MS_FILTER_CLASS(klass)->w_maxgran=33; | |
| 65 MS_FILTER_CLASS(klass)->destroy=(MSFilterDestroyFunc)ms_GSMencoder_destroy; | |
| 66 MS_FILTER_CLASS(klass)->process=(MSFilterProcessFunc)ms_GSMencoder_process; | |
| 67 MS_FILTER_CLASS(klass)->info=MS_FILTER_INFO(&GSMinfo); | |
| 68 } | |
| 69 | |
| 70 void ms_GSMencoder_process(MSGSMEncoder *r) | |
| 71 { | |
| 72 MSFifo *fi,*fo; | |
| 73 int err1; | |
| 74 void *s,*d; | |
| 75 | |
| 76 /* process output fifos, but there is only one for this class of filter*/ | |
| 77 | |
| 78 fi=r->f_inputs[0]; | |
| 79 fo=r->f_outputs[0]; | |
| 80 if (fi!=NULL) | |
| 81 { | |
| 82 err1=ms_fifo_get_read_ptr(fi,160*2,&s); | |
| 83 if (err1>0) | |
| 84 { | |
| 85 err1=ms_fifo_get_write_ptr(fo,33,&d); | |
| 86 if (d!=NULL) gsm_encode(r->gsm_handle,(gsm_signal*)s,(gsm_byte*)d); | |
| 87 } | |
| 88 | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 void ms_GSMencoder_uninit(MSGSMEncoder *obj) | |
| 93 { | |
| 94 gsm_destroy(obj->gsm_handle); | |
| 95 } | |
| 96 | |
| 97 void ms_GSMencoder_destroy( MSGSMEncoder *obj) | |
| 98 { | |
| 99 ms_GSMencoder_uninit(obj); | |
| 100 g_free(obj); | |
| 101 } |
