1 /*****************************************************************************
2 * vlc_vlm.h: VLM core structures
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 the VideoLAN team
7 * Authors: Simon Latapie <garf@videolan.org>
8 * Laurent Aimar <fenrir@videolan.org>
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
30 * This file defines VLM core functions and structures in vlc
33 #include <vlc_input.h>
36 * \defgroup server VLM
37 * VLM is the server core in vlc that allows streaming of multiple media streams
38 * at the same time. It provides broadcast, schedule and video on demand features
39 * for streaming using several streaming and network protocols.
46 int64_t id; /*< numeric id for vlm_media_t item */
47 bool b_enabled; /*< vlm_media_t is enabled */
49 char *psz_name; /*< descriptive name of vlm_media_t item */
51 int i_input; /*< number of input options */
52 char **ppsz_input; /*< array of input options */
54 int i_option; /*< number of output options */
55 char **ppsz_option; /*< array of output options */
57 char *psz_output; /*< */
59 bool b_vod; /*< vlm_media_t is of type VOD */
62 bool b_loop; /*< this vlc_media_t broadcast item should loop */
63 } broadcast; /*< Broadcast specific information */
66 char *psz_mux; /*< name of muxer to use */
67 } vod; /*< VOD specific information */
71 /** VLM media instance */
74 char *psz_name; /*< vlm media instance descriptive name */
76 int64_t i_time; /*< vlm media instance vlm media current time */
77 int64_t i_length; /*< vlm media instance vlm media item length */
78 double d_position; /*< vlm media instance position in stream */
79 bool b_paused; /*< vlm media instance is paused */
80 int i_rate; // normal is INPUT_RATE_DEFAULT
81 } vlm_media_instance_t;
91 * You can catch vlm event by adding a callback on the variable "intf-event"
93 * This variable is an address that will hold a vlm_event_t* value.
98 VLM_EVENT_MEDIA_ADDED = 0x100,
99 VLM_EVENT_MEDIA_REMOVED,
100 VLM_EVENT_MEDIA_CHANGED,
103 VLM_EVENT_MEDIA_INSTANCE_STARTED = 0x200,
104 VLM_EVENT_MEDIA_INSTANCE_STOPPED,
105 VLM_EVENT_MEDIA_INSTANCE_STATE,
110 int i_type; /* a vlm_event_type_e value */
111 int64_t id; /* Media ID */
112 const char *psz_name; /* Media name */
113 const char *psz_instance_name; /* Instance name or NULL */
114 input_state_e input_state; /* Input instance event type */
117 /** VLM control query */
120 /* --- Media control */
122 VLM_GET_MEDIAS, /* arg1=vlm_media_t ***, int *pi_media */
123 /* Delete all medias */
124 VLM_CLEAR_MEDIAS, /* no arg */
126 /* Add a new media */
127 VLM_ADD_MEDIA, /* arg1=vlm_media_t* arg2=int64_t *p_id res=can fail */
128 /* Delete an existing media */
129 VLM_DEL_MEDIA, /* arg1=int64_t id */
130 /* Change properties of an existing media (all fields but id and b_vod) */
131 VLM_CHANGE_MEDIA, /* arg1=vlm_media_t* res=can fail */
132 /* Get 1 media by it's ID */
133 VLM_GET_MEDIA, /* arg1=int64_t id arg2=vlm_media_t ** */
134 /* Get media ID from its name */
135 VLM_GET_MEDIA_ID, /* arg1=const char *psz_name arg2=int64_t* */
137 /* Media instance control XXX VOD control are for internal use only */
138 /* Get all media instances */
139 VLM_GET_MEDIA_INSTANCES, /* arg1=int64_t id arg2=vlm_media_instance_t *** arg3=int *pi_instance */
140 /* Delete all media instances */
141 VLM_CLEAR_MEDIA_INSTANCES, /* arg1=int64_t id */
142 /* Control broadcast instance */
143 VLM_START_MEDIA_BROADCAST_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name, int i_input_index res=can fail */
144 /* Control VOD instance */
145 VLM_START_MEDIA_VOD_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name, int i_input_index char *psz_vod_output res=can fail */
146 /* Stop an instance */
147 VLM_STOP_MEDIA_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name res=can fail */
148 /* Pause an instance */
149 VLM_PAUSE_MEDIA_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name res=can fail */
150 /* Get instance position time (in microsecond) */
151 VLM_GET_MEDIA_INSTANCE_TIME, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=int64_t * */
152 /* Set instance position time (in microsecond) */
153 VLM_SET_MEDIA_INSTANCE_TIME, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=int64_t */
154 /* Get instance position ([0.0 .. 1.0]) */
155 VLM_GET_MEDIA_INSTANCE_POSITION, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=double * */
156 /* Set instance position ([0.0 .. 1.0]) */
157 VLM_SET_MEDIA_INSTANCE_POSITION, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=double */
159 /* Schedule control */
160 VLM_CLEAR_SCHEDULES, /* no arg */
161 /* TODO: missing schedule control */
167 /* VLM specific - structures and functions */
169 /* ok, here is the structure of a vlm_message:
170 The parent node is ( name_of_the_command , NULL ), or
171 ( name_of_the_command , message_error ) on error.
172 If a node has children, it should not have a value (=NULL).*/
175 char *psz_name; /*< message name */
176 char *psz_value; /*< message value */
178 int i_child; /*< number of child messages */
179 vlm_message_t **child; /*< array of vlm_message_t */
187 VLC_EXPORT( vlm_t *, vlm_New, ( vlc_object_t * ) );
188 #define vlm_New( a ) vlm_New( VLC_OBJECT(a) )
189 VLC_EXPORT( void, vlm_Delete, ( vlm_t * ) );
190 VLC_EXPORT( int, vlm_ExecuteCommand, ( vlm_t *, const char *, vlm_message_t ** ) );
191 VLC_EXPORT( int, vlm_Control, ( vlm_t *p_vlm, int i_query, ... ) );
193 VLC_EXPORT( vlm_message_t *, vlm_MessageSimpleNew, ( const char * ) );
194 VLC_EXPORT( vlm_message_t *, vlm_MessageNew, ( const char *, const char *, ... ) LIBVLC_FORMAT( 2, 3 ) );
195 VLC_EXPORT( vlm_message_t *, vlm_MessageAdd, ( vlm_message_t *, vlm_message_t * ) );
196 VLC_EXPORT( void, vlm_MessageDelete, ( vlm_message_t * ) );
201 * Initialize a vlm_media_t instance
202 * \param p_media vlm_media_t instance to initialize
204 static inline void vlm_media_Init( vlm_media_t *p_media )
206 memset( p_media, 0, sizeof(vlm_media_t) );
207 p_media->id = 0; // invalid id
208 p_media->psz_name = NULL;
209 TAB_INIT( p_media->i_input, p_media->ppsz_input );
210 TAB_INIT( p_media->i_option, p_media->ppsz_option );
211 p_media->psz_output = NULL;
212 p_media->b_vod = false;
214 p_media->vod.psz_mux = NULL;
215 p_media->broadcast.b_loop = false;
219 * Copy a vlm_media_t instance into another vlm_media_t instance
220 * \param p_dst vlm_media_t instance to copy to
221 * \param p_src vlm_media_t instance to copy from
225 vlm_media_Copy( vlm_media_t *restrict p_dst, const vlm_media_t *restrict p_src )
227 vlm_media_Copy( vlm_media_t *p_dst, const vlm_media_t *p_src )
232 memset( p_dst, 0, sizeof(vlm_media_t) );
233 p_dst->id = p_src->id;
234 p_dst->b_enabled = p_src->b_enabled;
235 if( p_src->psz_name )
236 p_dst->psz_name = strdup( p_src->psz_name );
238 for( i = 0; i < p_src->i_input; i++ )
239 TAB_APPEND_CPP( char, p_dst->i_input, p_dst->ppsz_input, strdup(p_src->ppsz_input[i]) );
240 for( i = 0; i < p_src->i_option; i++ )
241 TAB_APPEND_CPP( char, p_dst->i_option, p_dst->ppsz_option, strdup(p_src->ppsz_option[i]) );
243 if( p_src->psz_output )
244 p_dst->psz_output = strdup( p_src->psz_output );
246 p_dst->b_vod = p_src->b_vod;
249 if( p_src->vod.psz_mux )
250 p_dst->vod.psz_mux = strdup( p_src->vod.psz_mux );
254 p_dst->broadcast.b_loop = p_src->broadcast.b_loop;
259 * Cleanup and release memory associated with this vlm_media_t instance.
260 * You still need to release p_media itself with vlm_media_Delete().
261 * \param p_media vlm_media_t to cleanup
263 static inline void vlm_media_Clean( vlm_media_t *p_media )
266 free( p_media->psz_name );
268 for( i = 0; i < p_media->i_input; i++ )
269 free( p_media->ppsz_input[i]) ;
270 TAB_CLEAN(p_media->i_input, p_media->ppsz_input );
272 for( i = 0; i < p_media->i_option; i++ )
273 free( p_media->ppsz_option[i]) ;
274 TAB_CLEAN(p_media->i_option, p_media->ppsz_option );
276 free( p_media->psz_output );
278 free( p_media->vod.psz_mux );
282 * Allocate a new vlm_media_t instance
283 * \return vlm_media_t instance
285 static inline vlm_media_t *vlm_media_New(void)
287 vlm_media_t *p_media = (vlm_media_t *)malloc( sizeof(vlm_media_t) );
289 vlm_media_Init( p_media );
294 * Delete a vlm_media_t instance
295 * \param p_media vlm_media_t instance to delete
297 static inline void vlm_media_Delete( vlm_media_t *p_media )
299 vlm_media_Clean( p_media );
304 * Copy a vlm_media_t instance
305 * \param p_src vlm_media_t instance to copy
306 * \return vlm_media_t duplicate of p_src
308 static inline vlm_media_t *vlm_media_Duplicate( vlm_media_t *p_src )
310 vlm_media_t *p_dst = vlm_media_New();
312 vlm_media_Copy( p_dst, p_src );
316 /* media instance helpers */
318 * Initialize vlm_media_instance_t
319 * \param p_instance vlm_media_instance_t to initialize
321 static inline void vlm_media_instance_Init( vlm_media_instance_t *p_instance )
323 memset( p_instance, 0, sizeof(vlm_media_instance_t) );
324 p_instance->psz_name = NULL;
325 p_instance->i_time = 0;
326 p_instance->i_length = 0;
327 p_instance->d_position = 0.0;
328 p_instance->b_paused = false;
329 p_instance->i_rate = INPUT_RATE_DEFAULT;
333 * Cleanup vlm_media_instance_t
334 * \param p_instance vlm_media_instance_t to cleanup
336 static inline void vlm_media_instance_Clean( vlm_media_instance_t *p_instance )
338 free( p_instance->psz_name );
342 * Allocate a new vlm_media_instance_t
343 * \return a new vlm_media_instance_t
345 static inline vlm_media_instance_t *vlm_media_instance_New(void)
347 vlm_media_instance_t *p_instance = (vlm_media_instance_t *) malloc( sizeof(vlm_media_instance_t) );
349 vlm_media_instance_Init( p_instance );
354 * Delete a vlm_media_instance_t
355 * \param p_instance vlm_media_instance_t to delete
357 static inline void vlm_media_instance_Delete( vlm_media_instance_t *p_instance )
359 vlm_media_instance_Clean( p_instance );