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,
109 int i_type; /* a vlm_event_type_e value */
110 int64_t id; /* Media ID */
111 const char *psz_name; /* Media name */
114 /** VLM control query */
117 /* --- Media control */
119 VLM_GET_MEDIAS, /* arg1=vlm_media_t ***, int *pi_media */
120 /* Delete all medias */
121 VLM_CLEAR_MEDIAS, /* no arg */
123 /* Add a new media */
124 VLM_ADD_MEDIA, /* arg1=vlm_media_t* arg2=int64_t *p_id res=can fail */
125 /* Delete an existing media */
126 VLM_DEL_MEDIA, /* arg1=int64_t id */
127 /* Change properties of an existing media (all fields but id and b_vod) */
128 VLM_CHANGE_MEDIA, /* arg1=vlm_media_t* res=can fail */
129 /* Get 1 media by it's ID */
130 VLM_GET_MEDIA, /* arg1=int64_t id arg2=vlm_media_t ** */
131 /* Get media ID from its name */
132 VLM_GET_MEDIA_ID, /* arg1=const char *psz_name arg2=int64_t* */
134 /* Media instance control XXX VOD control are for internal use only */
135 /* Get all media instances */
136 VLM_GET_MEDIA_INSTANCES, /* arg1=int64_t id arg2=vlm_media_instance_t *** arg3=int *pi_instance */
137 /* Delete all media instances */
138 VLM_CLEAR_MEDIA_INSTANCES, /* arg1=int64_t id */
139 /* Control broadcast instance */
140 VLM_START_MEDIA_BROADCAST_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name, int i_input_index res=can fail */
141 /* Control VOD instance */
142 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 */
143 /* Stop an instance */
144 VLM_STOP_MEDIA_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name res=can fail */
145 /* Pause an instance */
146 VLM_PAUSE_MEDIA_INSTANCE, /* arg1=int64_t id, arg2=const char *psz_instance_name res=can fail */
147 /* Get instance position time (in microsecond) */
148 VLM_GET_MEDIA_INSTANCE_TIME, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=int64_t * */
149 /* Set instance position time (in microsecond) */
150 VLM_SET_MEDIA_INSTANCE_TIME, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=int64_t */
151 /* Get instance position ([0.0 .. 1.0]) */
152 VLM_GET_MEDIA_INSTANCE_POSITION, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=double * */
153 /* Set instance position ([0.0 .. 1.0]) */
154 VLM_SET_MEDIA_INSTANCE_POSITION, /* arg1=int64_t id, arg2=const char *psz_instance_name arg3=double */
156 /* Schedule control */
157 VLM_CLEAR_SCHEDULES, /* no arg */
158 /* TODO: missing schedule control */
164 /* VLM specific - structures and functions */
166 /* ok, here is the structure of a vlm_message:
167 The parent node is ( name_of_the_command , NULL ), or
168 ( name_of_the_command , message_error ) on error.
169 If a node has children, it should not have a value (=NULL).*/
172 char *psz_name; /*< message name */
173 char *psz_value; /*< message value */
175 int i_child; /*< number of child messages */
176 vlm_message_t **child; /*< array of vlm_message_t */
184 #define vlm_New( a ) __vlm_New( VLC_OBJECT(a) )
185 VLC_EXPORT( vlm_t *, __vlm_New, ( vlc_object_t * ) );
186 VLC_EXPORT( void, vlm_Delete, ( vlm_t * ) );
187 VLC_EXPORT( int, vlm_ExecuteCommand, ( vlm_t *, const char *, vlm_message_t ** ) );
188 VLC_EXPORT( int, vlm_Control, ( vlm_t *p_vlm, int i_query, ... ) );
190 VLC_EXPORT( vlm_message_t *, vlm_MessageSimpleNew, ( const char * ) );
191 VLC_EXPORT( vlm_message_t *, vlm_MessageNew, ( const char *, const char *, ... ) LIBVLC_FORMAT( 2, 3 ) );
192 VLC_EXPORT( vlm_message_t *, vlm_MessageAdd, ( vlm_message_t *, vlm_message_t * ) );
193 VLC_EXPORT( void, vlm_MessageDelete, ( vlm_message_t * ) );
198 * Initialize a vlm_media_t instance
199 * \param p_media vlm_media_t instance to initialize
201 static inline void vlm_media_Init( vlm_media_t *p_media )
203 memset( p_media, 0, sizeof(vlm_media_t) );
204 p_media->id = 0; // invalid id
205 p_media->psz_name = NULL;
206 TAB_INIT( p_media->i_input, p_media->ppsz_input );
207 TAB_INIT( p_media->i_option, p_media->ppsz_option );
208 p_media->psz_output = NULL;
209 p_media->b_vod = false;
211 p_media->vod.psz_mux = NULL;
212 p_media->broadcast.b_loop = false;
216 * Copy a vlm_media_t instance into another vlm_media_t instance
217 * \param p_dst vlm_media_t instance to copy to
218 * \param p_src vlm_media_t instance to copy from
220 static inline void vlm_media_Copy( vlm_media_t *p_dst, vlm_media_t *p_src )
224 memset( p_dst, 0, sizeof(vlm_media_t) );
225 p_dst->id = p_src->id;
226 p_dst->b_enabled = p_src->b_enabled;
227 if( p_src->psz_name )
228 p_dst->psz_name = strdup( p_src->psz_name );
230 for( i = 0; i < p_src->i_input; i++ )
231 TAB_APPEND_CPP( char, p_dst->i_input, p_dst->ppsz_input, strdup(p_src->ppsz_input[i]) );
232 for( i = 0; i < p_src->i_option; i++ )
233 TAB_APPEND_CPP( char, p_dst->i_option, p_dst->ppsz_option, strdup(p_src->ppsz_option[i]) );
235 if( p_src->psz_output )
236 p_dst->psz_output = strdup( p_src->psz_output );
238 p_dst->b_vod = p_src->b_vod;
241 if( p_src->vod.psz_mux )
242 p_dst->vod.psz_mux = strdup( p_src->vod.psz_mux );
246 p_dst->broadcast.b_loop = p_src->broadcast.b_loop;
251 * Cleanup and release memory associated with this vlm_media_t instance.
252 * You still need to release p_media itself with vlm_media_Delete().
253 * \param p_media vlm_media_t to cleanup
255 static inline void vlm_media_Clean( vlm_media_t *p_media )
258 free( p_media->psz_name );
260 for( i = 0; i < p_media->i_input; i++ )
261 free( p_media->ppsz_input[i]) ;
262 TAB_CLEAN(p_media->i_input, p_media->ppsz_input );
264 for( i = 0; i < p_media->i_option; i++ )
265 free( p_media->ppsz_option[i]) ;
266 TAB_CLEAN(p_media->i_option, p_media->ppsz_option );
268 free( p_media->psz_output );
270 free( p_media->vod.psz_mux );
274 * Allocate a new vlm_media_t instance
275 * \return vlm_media_t instance
277 static inline vlm_media_t *vlm_media_New(void)
279 vlm_media_t *p_media = (vlm_media_t *)malloc( sizeof(vlm_media_t) );
281 vlm_media_Init( p_media );
286 * Delete a vlm_media_t instance
287 * \param p_media vlm_media_t instance to delete
289 static inline void vlm_media_Delete( vlm_media_t *p_media )
291 vlm_media_Clean( p_media );
296 * Copy a vlm_media_t instance
297 * \param p_src vlm_media_t instance to copy
298 * \return vlm_media_t duplicate of p_src
300 static inline vlm_media_t *vlm_media_Duplicate( vlm_media_t *p_src )
302 vlm_media_t *p_dst = vlm_media_New();
304 vlm_media_Copy( p_dst, p_src );
308 /* media instance helpers */
310 * Initialize vlm_media_instance_t
311 * \param p_instance vlm_media_instance_t to initialize
313 static inline void vlm_media_instance_Init( vlm_media_instance_t *p_instance )
315 memset( p_instance, 0, sizeof(vlm_media_instance_t) );
316 p_instance->psz_name = NULL;
317 p_instance->i_time = 0;
318 p_instance->i_length = 0;
319 p_instance->d_position = 0.0;
320 p_instance->b_paused = false;
321 p_instance->i_rate = INPUT_RATE_DEFAULT;
325 * Cleanup vlm_media_instance_t
326 * \param p_instance vlm_media_instance_t to cleanup
328 static inline void vlm_media_instance_Clean( vlm_media_instance_t *p_instance )
330 free( p_instance->psz_name );
334 * Allocate a new vlm_media_instance_t
335 * \return a new vlm_media_instance_t
337 static inline vlm_media_instance_t *vlm_media_instance_New(void)
339 vlm_media_instance_t *p_instance = (vlm_media_instance_t *) malloc( sizeof(vlm_media_instance_t) );
341 vlm_media_instance_Init( p_instance );
346 * Delete a vlm_media_instance_t
347 * \param p_instance vlm_media_instance_t to delete
349 static inline void vlm_media_instance_Delete( vlm_media_instance_t *p_instance )
351 vlm_media_instance_Clean( p_instance );