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1 /***************************************************************************
2  *            private.h
3  *
4  *  Mon Jun 13 14:23:23 2005
5  *  Copyright  2005  Simon Morlat
6  *  Email simon dot morlat at linphone dot org
7  ****************************************************************************/
8
9 /*
10  *  This program is free software; you can redistribute it and/or modify
11  *  it under the terms of the GNU General Public License as published by
12  *  the Free Software Foundation; either version 2 of the License, or
13  *  (at your option) any later version.
14  *
15  *  This program is distributed in the hope that it will be useful,
16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *  GNU General Public License for more details.
19  *
20  *  You should have received a copy of the GNU General Public License
21  *  along with this program; if not, write to the Free Software
22  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23  */
24
25 #ifndef _PRIVATE_H
26 #define _PRIVATE_H
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30 #include "linphonecore.h"
31 #include "linphone_tunnel.h"
32 #include "linphonecore_utils.h"
33 #include "sal.h"
34
35 #ifdef HAVE_CONFIG_H
36 #include "config.h"
37 #endif
38 #include "mediastreamer2/ice.h"
39 #include "mediastreamer2/mediastream.h"
40 #include "mediastreamer2/msconference.h"
41
42 #ifndef LIBLINPHONE_VERSION
43 #define LIBLINPHONE_VERSION LINPHONE_VERSION
44 #endif
45
46 #ifndef PACKAGE_SOUND_DIR
47 #define PACKAGE_SOUND_DIR "."
48 #endif
49
50 #ifndef PACKAGE_DATA_DIR
51 #define PACKAGE_DATA_DIR "."
52 #endif
53
54 #ifdef HAVE_GETTEXT
55 #include <libintl.h>
56 #ifndef _
57 #define _(String) gettext(String)
58 #endif
59 #else
60 #ifndef _
61 #define _(something)    (something)
62 #endif
63 #ifndef ngettext
64 #define ngettext(singular, plural, number)      (((number)==1)?(singular):(plural))
65 #endif
66 #endif
67
68 struct _LinphoneCallParams{
69         LinphoneCall *referer; /*in case this call creation is consecutive to an incoming transfer, this points to the original call */
70         int audio_bw; /* bandwidth limit for audio stream */
71         LinphoneMediaEncryption media_encryption;
72         PayloadType *audio_codec; /*audio codec currently in use */
73         PayloadType *video_codec; /*video codec currently in use */
74         int down_bw;
75         int up_bw;
76         int down_ptime;
77         int up_ptime;
78         bool_t has_video;
79         bool_t real_early_media; /*send real media even during early media (for outgoing calls)*/
80         bool_t in_conference; /*in conference mode */
81         bool_t pad;
82         bool_t low_bandwidth;
83 };
84     
85 typedef struct _CallCallbackObj
86 {
87     LinphoneCallCbFunc _func;
88     void * _user_data;
89 }CallCallbackObj;
90
91 static const int linphone_call_magic=0x3343;
92
93 struct _LinphoneChatMessage {
94         char* message;
95         LinphoneChatRoom* chat_room;
96         LinphoneChatMessageStateChangeCb cb;
97         void* cb_ud;
98         void* message_userdata;
99         char* external_body_url;
100         LinphoneAddress* from;
101 };
102
103 typedef struct StunCandidate{
104         char addr[64];
105         int port;
106 }StunCandidate;
107
108
109 struct _LinphoneCall
110 {
111         int magic; /*used to distinguish from proxy config*/
112         struct _LinphoneCore *core;
113         SalMediaDescription *localdesc;
114         SalMediaDescription *resultdesc;
115         LinphoneCallDir dir;
116         LinphoneCall *referer; /*when this call is the result of a transfer, referer is set to the original call that caused the transfer*/
117         struct _RtpProfile *audio_profile;
118         struct _RtpProfile *video_profile;
119         struct _LinphoneCallLog *log;
120         SalOp *op;
121         SalOp *ping_op;
122         char localip[LINPHONE_IPADDR_SIZE]; /* our best guess for local ipaddress for this call */
123         time_t start_time; /*time at which the call was initiated*/
124         time_t media_start_time; /*time at which it was accepted, media streams established*/
125         LinphoneCallState       state;
126         LinphoneCallState transfer_state; /*idle if no transfer*/
127         LinphoneReason reason;
128         LinphoneProxyConfig *dest_proxy;
129         int refcnt;
130         void * user_pointer;
131         int audio_port;
132         int video_port;
133         StunCandidate ac,vc; /*audio video ip/port discovered by STUN*/
134         struct _AudioStream *audiostream;  /**/
135         struct _VideoStream *videostream;
136         MSAudioEndpoint *endpoint; /*used for conferencing*/
137         char *refer_to;
138         LinphoneCallParams params;
139         LinphoneCallParams current_params;
140         LinphoneCallParams remote_params;
141         int up_bw; /*upload bandwidth setting at the time the call is started. Used to detect if it changes during a call */
142         int audio_bw;   /*upload bandwidth used by audio */
143         OrtpEvQueue *audiostream_app_evq;
144         char *auth_token;
145         OrtpEvQueue *videostream_app_evq;
146         CallCallbackObj nextVideoFrameDecoded;
147         LinphoneCallStats stats[2];
148         IceSession *ice_session;
149         LinphoneChatMessage* pending_message;
150         int ping_time;
151         bool_t refer_pending;
152         bool_t media_pending;
153         bool_t audio_muted;
154         bool_t camera_active;
155         
156         bool_t all_muted; /*this flag is set during early medias*/
157         bool_t playing_ringbacktone;
158         bool_t owns_call_log;
159         bool_t ringing_beep; /* whether this call is ringing through an already existent current call*/
160         
161         bool_t videostream_encrypted;
162         bool_t audiostream_encrypted;
163         bool_t auth_token_verified;
164         bool_t defer_update;
165         
166         bool_t was_automatically_paused;
167         bool_t ping_replied;
168 };
169
170
171 LinphoneCall * linphone_call_new_outgoing(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, const LinphoneCallParams *params);
172 LinphoneCall * linphone_call_new_incoming(struct _LinphoneCore *lc, LinphoneAddress *from, LinphoneAddress *to, SalOp *op);
173 void linphone_call_set_state(LinphoneCall *call, LinphoneCallState cstate, const char *message);
174
175 /* private: */
176 LinphoneCallLog * linphone_call_log_new(LinphoneCall *call, LinphoneAddress *local, LinphoneAddress * remote);
177 void linphone_call_log_completed(LinphoneCall *call);
178 void linphone_call_log_destroy(LinphoneCallLog *cl);
179 void linphone_call_set_transfer_state(LinphoneCall* call, LinphoneCallState state);
180
181 void linphone_auth_info_write_config(struct _LpConfig *config, LinphoneAuthInfo *obj, int pos);
182
183 void linphone_core_update_proxy_register(LinphoneCore *lc);
184 void linphone_core_refresh_subscribes(LinphoneCore *lc);
185 int linphone_core_abort_call(LinphoneCore *lc, LinphoneCall *call, const char *error);
186
187 int linphone_proxy_config_send_publish(LinphoneProxyConfig *cfg, LinphoneOnlineStatus os);
188 void linphone_proxy_config_set_state(LinphoneProxyConfig *cfg, LinphoneRegistrationState rstate, const char *message);
189
190 int linphone_online_status_to_eXosip(LinphoneOnlineStatus os);
191 void linphone_friend_close_subscriptions(LinphoneFriend *lf);
192 void linphone_friend_notify(LinphoneFriend *lf, LinphoneOnlineStatus os);
193 LinphoneFriend *linphone_find_friend_by_inc_subscribe(MSList *l, SalOp *op);
194 LinphoneFriend *linphone_find_friend_by_out_subscribe(MSList *l, SalOp *op);
195
196 int parse_hostname_to_addr(const char *server, struct sockaddr_storage *ss, socklen_t *socklen);
197 int set_lock_file();
198 int get_lock_file();
199 int remove_lock_file();
200 void check_sound_device(LinphoneCore *lc);
201 void linphone_core_get_local_ip(LinphoneCore *lc, const char *to, char *result);
202 bool_t host_has_ipv6_network();
203 bool_t lp_spawn_command_line_sync(const char *command, char **result,int *command_ret);
204
205 static inline int get_min_bandwidth(int dbw, int ubw){
206         if (dbw<=0) return ubw;
207         if (ubw<=0) return dbw;
208         return MIN(dbw,ubw);
209 }
210
211 static inline bool_t bandwidth_is_greater(int bw1, int bw2){
212         if (bw1<0) return TRUE;
213         else if (bw2<0) return FALSE;
214         else return bw1>=bw2;
215 }
216
217 static inline int get_video_bandwidth(int total, int audio){
218         if (total<=0) return 0;
219         return total-audio-10;
220 }
221
222 static inline void set_string(char **dest, const char *src){
223         if (*dest){
224                 ms_free(*dest);
225                 *dest=NULL;
226         }
227         if (src)
228                 *dest=ms_strdup(src);
229 }
230
231 #define PAYLOAD_TYPE_ENABLED    PAYLOAD_TYPE_USER_FLAG_0
232
233 SalPresenceStatus linphone_online_status_to_sal(LinphoneOnlineStatus os);
234 void linphone_process_authentication(LinphoneCore* lc, SalOp *op);
235 void linphone_authentication_ok(LinphoneCore *lc, SalOp *op);
236 void linphone_subscription_new(LinphoneCore *lc, SalOp *op, const char *from);
237 void linphone_notify_recv(LinphoneCore *lc, SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status);
238 void linphone_proxy_config_process_authentication_failure(LinphoneCore *lc, SalOp *op);
239
240 void linphone_subscription_answered(LinphoneCore *lc, SalOp *op);
241 void linphone_subscription_closed(LinphoneCore *lc, SalOp *op);
242
243 MSList *linphone_find_friend(MSList *fl, const LinphoneAddress *fri, LinphoneFriend **lf);
244
245 void linphone_core_update_allocated_audio_bandwidth(LinphoneCore *lc);
246 void linphone_core_update_allocated_audio_bandwidth_in_call(LinphoneCall *call, const PayloadType *pt);
247
248 int linphone_core_run_stun_tests(LinphoneCore *lc, LinphoneCall *call);
249 void linphone_core_adapt_to_network(LinphoneCore *lc, int ping_time_ms, LinphoneCallParams *params);
250 int linphone_core_gather_ice_candidates(LinphoneCore *lc, LinphoneCall *call);
251 void linphone_core_update_ice_state_in_call_stats(LinphoneCall *call);
252 void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session);
253 void linphone_core_update_ice_from_remote_media_description(LinphoneCall *call, const SalMediaDescription *md);
254 bool_t linphone_core_media_description_contains_video_stream(const SalMediaDescription *md);
255
256 void linphone_core_send_initial_subscribes(LinphoneCore *lc);
257 void linphone_core_write_friends_config(LinphoneCore* lc);
258 void linphone_friend_write_to_config_file(struct _LpConfig *config, LinphoneFriend *lf, int index);
259 LinphoneFriend * linphone_friend_new_from_config_file(struct _LinphoneCore *lc, int index);
260
261 void linphone_proxy_config_update(LinphoneProxyConfig *cfg);
262 void linphone_proxy_config_get_contact(LinphoneProxyConfig *cfg, const char **ip, int *port);
263 LinphoneProxyConfig * linphone_core_lookup_known_proxy(LinphoneCore *lc, const LinphoneAddress *uri);
264 const char *linphone_core_find_best_identity(LinphoneCore *lc, const LinphoneAddress *to, const char **route);
265 int linphone_core_get_local_ip_for(int type, const char *dest, char *result);
266
267 LinphoneProxyConfig *linphone_proxy_config_new_from_config_file(struct _LpConfig *config, int index);
268 void linphone_proxy_config_write_to_config_file(struct _LpConfig* config,LinphoneProxyConfig *obj, int index);
269
270 int linphone_proxy_config_normalize_number(LinphoneProxyConfig *cfg, const char *username, char *result, size_t result_len);
271
272 void linphone_core_message_received(LinphoneCore *lc, const char *from, const char *raw_msg,const char* external_url);
273
274 void linphone_core_play_tone(LinphoneCore *lc);
275
276 void linphone_call_init_stats(LinphoneCallStats *stats, int type);
277
278 void linphone_call_init_audio_stream(LinphoneCall *call);
279 void linphone_call_init_video_stream(LinphoneCall *call);
280 void linphone_call_init_media_streams(LinphoneCall *call);
281 void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_muted, bool_t send_ringbacktone);
282 void linphone_call_start_media_streams_for_ice_gathering(LinphoneCall *call);
283 void linphone_call_stop_audio_stream(LinphoneCall *call);
284 void linphone_call_stop_video_stream(LinphoneCall *call);
285 void linphone_call_stop_media_streams(LinphoneCall *call);
286 void linphone_call_delete_ice_session(LinphoneCall *call);
287 void linphone_call_stop_media_streams_for_ice_gathering(LinphoneCall *call);
288
289 const char * linphone_core_get_identity(LinphoneCore *lc);
290 const char * linphone_core_get_route(LinphoneCore *lc);
291 void linphone_core_start_waiting(LinphoneCore *lc, const char *purpose);
292 void linphone_core_update_progress(LinphoneCore *lc, const char *purpose, float progresses);
293 void linphone_core_stop_waiting(LinphoneCore *lc);
294
295 int linphone_core_proceed_with_invite_if_ready(LinphoneCore *lc, LinphoneCall *call, LinphoneProxyConfig *dest_proxy);
296 int linphone_core_start_invite(LinphoneCore *lc, LinphoneCall *call);
297 int linphone_core_start_update_call(LinphoneCore *lc, LinphoneCall *call);
298 int linphone_core_start_accept_call_update(LinphoneCore *lc, LinphoneCall *call);
299 void linphone_core_start_refered_call(LinphoneCore *lc, LinphoneCall *call);
300 void linphone_core_notify_incoming_call(LinphoneCore *lc, LinphoneCall *call);
301 extern SalCallbacks linphone_sal_callbacks;
302 void linphone_proxy_config_set_error(LinphoneProxyConfig *cfg, LinphoneReason error);
303 bool_t linphone_core_rtcp_enabled(const LinphoneCore *lc);
304
305 LinphoneCall * is_a_linphone_call(void *user_pointer);
306 LinphoneProxyConfig * is_a_linphone_proxy_config(void *user_pointer);
307
308 static const int linphone_proxy_config_magic=0x7979;
309
310 /*chat*/        
311 void linphone_chat_message_destroy(LinphoneChatMessage* msg);
312 /**/    
313
314 struct _LinphoneProxyConfig
315 {
316         int magic;
317         struct _LinphoneCore *lc;
318         char *reg_proxy;
319         char *reg_identity;
320         char *reg_route;
321         char *realm;
322         char *contact_params;
323         int expires;
324         int reg_time;
325         SalOp *op;
326         char *type;
327         struct _SipSetupContext *ssctx;
328         int auth_failures;
329         char *dial_prefix;
330         LinphoneRegistrationState state;
331         SalOp *publish_op;
332         bool_t commit;
333         bool_t reg_sendregister;
334         bool_t publish;
335         bool_t dial_escape_plus;
336         void* user_data;
337         time_t deletion_date;
338         LinphoneReason error;
339 };
340
341 struct _LinphoneAuthInfo
342 {
343         char *username;
344         char *realm;
345         char *userid;
346         char *passwd;
347         char *ha1;
348         int usecount;
349         time_t last_use_time;
350         bool_t works;
351 };
352
353 struct _LinphoneChatRoom{
354         struct _LinphoneCore *lc;
355         char  *peer;
356         LinphoneAddress *peer_url;
357         void * user_data;
358 };
359
360
361         
362 struct _LinphoneFriend{
363         LinphoneAddress *uri;
364         SalOp *insub;
365         SalOp *outsub;
366         LinphoneSubscribePolicy pol;
367         LinphoneOnlineStatus status;
368         struct _LinphoneCore *lc;
369         BuddyInfo *info;
370         char *refkey;
371         bool_t subscribe;
372         bool_t subscribe_active;
373         bool_t inc_subscribe_pending;
374         bool_t commit;
375 };
376
377
378 typedef struct sip_config
379 {
380         char *contact;
381         char *guessed_contact;
382         MSList *proxies;
383         MSList *deleted_proxies;
384         int inc_timeout;        /*timeout after an un-answered incoming call is rejected*/
385         int in_call_timeout;    /*timeout after a call is hangup */
386         unsigned int keepalive_period; /* interval in ms between keep alive messages sent to the proxy server*/
387         LCSipTransports transports;
388         bool_t use_info;
389         bool_t use_rfc2833;     /*force RFC2833 to be sent*/
390         bool_t guess_hostname;
391         bool_t loopback_only;
392         bool_t ipv6_enabled;
393         bool_t sdp_200_ack;
394         bool_t register_only_when_network_is_up;
395         bool_t ping_with_options;
396         bool_t auto_net_state_mon;
397 } sip_config_t;
398
399 typedef struct rtp_config
400 {
401         int audio_rtp_min_port;
402         int audio_rtp_max_port;
403         int video_rtp_min_port;
404         int video_rtp_max_port;
405         int audio_jitt_comp;  /*jitter compensation*/
406         int video_jitt_comp;  /*jitter compensation*/
407         int nortp_timeout;
408         bool_t rtp_no_xmit_on_audio_mute;
409                               /* stop rtp xmit when audio muted */
410         bool_t audio_adaptive_jitt_comp_enabled;
411         bool_t video_adaptive_jitt_comp_enabled;
412         bool_t pad;
413 }rtp_config_t;
414
415
416
417 typedef struct net_config
418 {
419         char *nat_address; /* may be IP or host name */
420         char *nat_address_ip; /* ip translated from nat_address */
421         char *stun_server;
422         char *relay;
423         int download_bw;
424         int upload_bw;
425         int firewall_policy;
426         int mtu;
427         bool_t nat_sdp_only;
428 }net_config_t;
429
430
431 typedef struct sound_config
432 {
433         struct _MSSndCard * ring_sndcard;       /* the playback sndcard currently used */
434         struct _MSSndCard * play_sndcard;       /* the playback sndcard currently used */
435         struct _MSSndCard * capt_sndcard; /* the capture sndcard currently used */
436         struct _MSSndCard * lsd_card; /* dummy playback card for Linphone Sound Daemon extension */
437         const char **cards;
438         int latency;    /* latency in samples of the current used sound device */
439         float soft_play_lev; /*playback gain in db.*/
440         float soft_mic_lev; /*mic gain in db.*/
441         char rec_lev;
442         char play_lev;
443         char ring_lev;
444         char source;
445         char *local_ring;
446         char *remote_ring;
447         char *ringback_tone;
448         bool_t ec;
449         bool_t ea;
450         bool_t agc;
451 } sound_config_t;
452
453 typedef struct codecs_config
454 {
455         MSList *audio_codecs;  /* list of audio codecs in order of preference*/
456         MSList *video_codecs;   /* for later use*/
457 }codecs_config_t;
458
459 typedef struct video_config{
460         struct _MSWebCam *device;
461         const char **cams;
462         MSVideoSize vsize;
463         bool_t capture;
464         bool_t show_local;
465         bool_t display;
466         bool_t selfview; /*during calls*/
467         const char *displaytype;
468 }video_config_t;
469
470 typedef struct ui_config
471 {
472         int is_daemon;
473         int is_applet;
474         unsigned int timer_id;  /* the timer id for registration */
475 }ui_config_t;
476
477
478
479 typedef struct autoreplier_config
480 {
481         int enabled;
482         int after_seconds;              /* accept the call after x seconds*/
483         int max_users;                  /* maximum number of user that can call simultaneously */
484         int max_rec_time;       /* the max time of incoming voice recorded */
485         int max_rec_msg;                /* maximum number of recorded messages */
486         const char *message;            /* the path of the file to be played */
487 }autoreplier_config_t;
488
489 struct _LinphoneConference{
490         MSAudioConference *conf;
491         AudioStream *local_participant;
492         MSAudioEndpoint *local_endpoint;
493         RtpProfile *local_dummy_profile;
494         bool_t local_muted;
495 };
496
497 typedef struct _LinphoneConference LinphoneConference;
498
499 struct _LinphoneCore
500 {
501         LinphoneCoreVTable vtable;
502         Sal *sal;
503         LinphoneGlobalState state;
504         struct _LpConfig *config;
505         net_config_t net_conf;
506         sip_config_t sip_conf;
507         rtp_config_t rtp_conf;
508         sound_config_t sound_conf;
509         video_config_t video_conf;
510         codecs_config_t codecs_conf;
511         ui_config_t ui_conf;
512         autoreplier_config_t autoreplier_conf;
513         MSList *payload_types;
514         int dyn_pt;
515         LinphoneProxyConfig *default_proxy;
516         MSList *friends;
517         MSList *auth_info;
518         struct _RingStream *ringstream;
519         time_t dmfs_playing_start_time;
520         LCCallbackObj preview_finished_cb;
521         LinphoneCall *current_call;   /* the current call */
522         MSList *calls;                          /* all the processed calls */
523         MSList *queued_calls;   /* used by the autoreplier */
524         MSList *call_logs;
525         MSList *chatrooms;
526         int max_call_logs;
527         int missed_calls;
528         VideoPreview *previewstream;
529         struct _MSEventQueue *msevq;
530         LinphoneRtpTransportFactories *rtptf;
531         MSList *bl_reqs;
532         MSList *subscribers;    /* unknown subscribers */
533         int minutes_away;
534         LinphoneOnlineStatus presence_mode;
535         char *alt_contact;
536         void *data;
537         char *play_file;
538         char *rec_file;
539         time_t prevtime;
540         int audio_bw;
541         LinphoneWaitingCallback wait_cb;
542         void *wait_ctx;
543         unsigned long video_window_id;
544         unsigned long preview_window_id;
545         time_t netup_time; /*time when network went reachable */
546         struct _EcCalibrator *ecc;
547         MSList *hooks;
548         LinphoneConference conf_ctx;
549         char* zrtp_secrets_cache;
550         LinphoneVideoPolicy video_policy;
551         bool_t use_files;
552         bool_t apply_nat_settings;
553         bool_t initial_subscribes_sent;
554         bool_t bl_refresh;
555         
556         bool_t preview_finished;
557         bool_t auto_net_state_mon;
558         bool_t network_reachable;
559         bool_t use_preview_window;
560         
561         time_t network_last_check;
562         bool_t network_last_status;
563
564         bool_t ringstream_autorelease;
565         bool_t pad[3];
566         int device_rotation;
567         int max_calls;
568         LinphoneTunnel *tunnel;
569         char* device_id;
570         MSList *last_recv_msg_ids;
571 };
572
573 LinphoneTunnel *linphone_core_tunnel_new(LinphoneCore *lc);
574 void linphone_tunnel_destroy(LinphoneTunnel *tunnel);
575 void linphone_tunnel_configure(LinphoneTunnel *tunnel);
576 void linphone_tunnel_enable_logs_with_handler(LinphoneTunnel *tunnel, bool_t enabled, OrtpLogFunc logHandler);
577         
578 bool_t linphone_core_can_we_add_call(LinphoneCore *lc);
579 int linphone_core_add_call( LinphoneCore *lc, LinphoneCall *call);
580 int linphone_core_del_call( LinphoneCore *lc, LinphoneCall *call);
581 int linphone_core_set_as_current_call(LinphoneCore *lc, LinphoneCall *call);
582 int linphone_core_get_calls_nb(const LinphoneCore *lc);
583
584 void linphone_core_set_state(LinphoneCore *lc, LinphoneGlobalState gstate, const char *message);
585 void linphone_call_make_local_media_description(LinphoneCore *lc, LinphoneCall *call);
586 void linphone_core_update_streams(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription *new_md);
587
588 bool_t linphone_core_is_payload_type_usable_for_bandwidth(LinphoneCore *lc, PayloadType *pt,  int bandwidth_limit);
589
590 #define linphone_core_ready(lc) ((lc)->state!=LinphoneGlobalStartup)
591 void _linphone_core_configure_resolver();
592
593 struct _EcCalibrator{
594         ms_thread_t thread;
595         MSSndCard *play_card,*capt_card;
596         MSFilter *sndread,*det,*rec;
597         MSFilter *play, *gen, *sndwrite;
598         MSFilter *read_resampler,*write_resampler;
599         MSTicker *ticker;
600         LinphoneEcCalibrationCallback cb;
601         void *cb_data;
602         int recv_count;
603         int sent_count;
604         int64_t acc;
605         int delay;
606         unsigned int rate;
607         LinphoneEcCalibratorStatus status;
608 };
609
610 typedef struct _EcCalibrator EcCalibrator;
611
612 LinphoneEcCalibratorStatus ec_calibrator_get_status(EcCalibrator *ecc);
613
614 void ec_calibrator_destroy(EcCalibrator *ecc);
615
616 void linphone_call_background_tasks(LinphoneCall *call, bool_t one_second_elapsed);
617 void linphone_core_preempt_sound_resources(LinphoneCore *lc);
618 /*conferencing subsystem*/
619 void _post_configure_audio_stream(AudioStream *st, LinphoneCore *lc, bool_t muted);
620 /* When a conference participant pause the conference he may send a music.
621  * We don't want to hear that music or to send it to the other participants.
622  * Use muted=yes to handle this case.
623  */
624 void linphone_call_add_to_conf(LinphoneCall *call, bool_t muted);
625 void linphone_call_remove_from_conf(LinphoneCall *call);
626 void linphone_core_conference_check_uninit(LinphoneCore *lc);
627 bool_t linphone_core_sound_resources_available(LinphoneCore *lc);
628 void linphone_core_notify_refer_state(LinphoneCore *lc, LinphoneCall *referer, LinphoneCall *newcall);
629 unsigned int linphone_core_get_audio_features(LinphoneCore *lc);
630
631 void __linphone_core_invalidate_registers(LinphoneCore* lc);
632 void _linphone_core_codec_config_write(LinphoneCore *lc);
633
634 #define HOLD_OFF        (0)
635 #define HOLD_ON         (1)
636
637 #ifndef NB_MAX_CALLS
638 #define NB_MAX_CALLS    (10)
639 #endif
640 void call_logs_write_to_config_file(LinphoneCore *lc);
641
642
643
644 #ifdef __cplusplus
645 }
646 #endif
647
648 #endif /* _PRIVATE_H */