1 /*****************************************************************************
2 * core.c: Core functions : init, playlist, stream management
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 #include <vlc/control.h>
29 #include <vlc_demux.h>
33 #define HAS_SNAPSHOT 1
39 #include <stdlib.h> /* malloc(), free() */
42 #include <errno.h> /* ENOMEM */
49 #ifdef HAVE_SYS_TIME_H
50 # include <sys/time.h>
52 #ifdef HAVE_SYS_TYPES_H
53 # include <sys/types.h>
56 #define RAISE( c, m ) exception->code = c; \
57 exception->message = strdup(m);
59 vlc_t * vlc_current_object( int );
61 mediacontrol_Instance* mediacontrol_new_from_object( int vlc_object_id,
62 mediacontrol_Exception *exception )
64 mediacontrol_Instance* retval;
66 vlc_object_t *p_object;
68 p_object = ( vlc_object_t* )vlc_current_object( vlc_object_id );
71 RAISE( mediacontrol_InternalException, "Unable to find vlc object" );
75 p_vlc = vlc_object_find( p_object, VLC_OBJECT_ROOT, FIND_PARENT );
78 RAISE( mediacontrol_InternalException, "Unable to initialize VLC" );
81 retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
82 retval->p_vlc = p_vlc;
83 retval->vlc_object_id = p_vlc->i_object_id;
85 /* We can keep references on these, which should not change. Is it true ? */
86 retval->p_playlist = vlc_object_find( p_vlc,
87 VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
88 retval->p_intf = vlc_object_find( p_vlc, VLC_OBJECT_INTF, FIND_ANYWHERE );
90 if( ! retval->p_playlist || ! retval->p_intf )
92 RAISE( mediacontrol_InternalException, "No available interface" );
99 /**************************************************************************
100 * Playback management
101 **************************************************************************/
102 mediacontrol_Position*
103 mediacontrol_get_media_position( mediacontrol_Instance *self,
104 const mediacontrol_PositionOrigin an_origin,
105 const mediacontrol_PositionKey a_key,
106 mediacontrol_Exception *exception )
108 mediacontrol_Position* retval;
110 input_thread_t * p_input = self->p_playlist->p_input;
112 exception = mediacontrol_exception_init( exception );
114 retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
115 retval->origin = an_origin;
121 RAISE( mediacontrol_InternalException, "No input thread." );
128 if( an_origin == mediacontrol_RelativePosition
129 || an_origin == mediacontrol_ModuloPosition )
131 /* Relative or ModuloPosition make no sense */
136 /* We are asked for an AbsolutePosition. */
138 var_Get( p_input, "time", &val );
139 /* FIXME: check val.i_time > 0 */
141 retval->value = mediacontrol_unit_convert( p_input,
142 mediacontrol_MediaTime,
148 /* Sets the media position */
150 mediacontrol_set_media_position( mediacontrol_Instance *self,
151 const mediacontrol_Position * a_position,
152 mediacontrol_Exception *exception )
155 input_thread_t * p_input = self->p_playlist->p_input;
157 exception=mediacontrol_exception_init( exception );
160 RAISE( mediacontrol_InternalException, "No input thread." );
164 if( !var_GetBool( p_input, "seekable" ) )
166 RAISE( mediacontrol_InvalidPosition, "Stream not seekable" );
170 val.i_time = mediacontrol_position2microsecond( p_input, a_position );
171 var_Set( p_input, "time", val );
175 /* Starts playing a stream */
177 mediacontrol_start( mediacontrol_Instance *self,
178 const mediacontrol_Position * a_position,
179 mediacontrol_Exception *exception )
181 playlist_t * p_playlist = self->p_playlist;
183 exception = mediacontrol_exception_init( exception );
186 RAISE( mediacontrol_PlaylistException, "No available playlist" );
190 vlc_mutex_lock( &p_playlist->object_lock );
191 if( p_playlist->i_size )
195 vlc_mutex_unlock( &p_playlist->object_lock );
198 val.i_int = mediacontrol_position2microsecond( p_playlist->p_input, a_position ) / 1000000;
199 var_Set( p_playlist, "start-time", val );
201 playlist_Play( p_playlist );
205 RAISE( mediacontrol_PlaylistException, "Empty playlist." );
206 vlc_mutex_unlock( &p_playlist->object_lock );
214 mediacontrol_pause( mediacontrol_Instance *self,
215 const mediacontrol_Position * a_position,
216 mediacontrol_Exception *exception )
218 input_thread_t *p_input = self->p_playlist->p_input;;
220 /* FIXME: use the a_position parameter */
221 exception=mediacontrol_exception_init( exception );
222 if( p_input != NULL )
224 var_SetInteger( p_input, "state", PAUSE_S );
228 RAISE( mediacontrol_InternalException, "No input" );
235 mediacontrol_resume( mediacontrol_Instance *self,
236 const mediacontrol_Position * a_position,
237 mediacontrol_Exception *exception )
239 input_thread_t *p_input = self->p_playlist->p_input;
241 /* FIXME: use the a_position parameter */
242 exception=mediacontrol_exception_init( exception );
243 if( p_input != NULL )
245 var_SetInteger( p_input, "state", PAUSE_S );
249 RAISE( mediacontrol_InternalException, "No input" );
254 mediacontrol_stop( mediacontrol_Instance *self,
255 const mediacontrol_Position * a_position,
256 mediacontrol_Exception *exception )
258 /* FIXME: use the a_position parameter */
259 exception=mediacontrol_exception_init( exception );
260 if( !self->p_playlist )
262 RAISE( mediacontrol_PlaylistException, "No playlist" );
266 playlist_Stop( self->p_playlist );
269 /**************************************************************************
270 * Playlist management
271 **************************************************************************/
274 mediacontrol_playlist_add_item( mediacontrol_Instance *self,
275 const char * psz_file,
276 mediacontrol_Exception *exception )
278 exception=mediacontrol_exception_init( exception );
279 if( !self->p_playlist )
281 RAISE( mediacontrol_InternalException, "No playlist" );
285 playlist_Add( self->p_playlist, psz_file, psz_file , PLAYLIST_INSERT,
290 mediacontrol_playlist_clear( mediacontrol_Instance *self,
291 mediacontrol_Exception *exception )
293 exception=mediacontrol_exception_init( exception );
294 if( !self->p_playlist )
296 RAISE( mediacontrol_PlaylistException, "No playlist" );
300 playlist_Clear( self->p_playlist );
305 mediacontrol_PlaylistSeq *
306 mediacontrol_playlist_get_list( mediacontrol_Instance *self,
307 mediacontrol_Exception *exception )
309 mediacontrol_PlaylistSeq *retval;
311 playlist_t * p_playlist = self->p_playlist;
314 exception=mediacontrol_exception_init( exception );
317 RAISE( mediacontrol_PlaylistException, "No playlist" );
321 vlc_mutex_lock( &p_playlist->object_lock );
322 i_playlist_size = p_playlist->i_size;
324 retval = mediacontrol_PlaylistSeq__alloc( i_playlist_size );
326 for( i_index = 0 ; i_index < i_playlist_size ; i_index++ )
328 retval->data[i_index] = strdup( p_playlist->pp_items[i_index]->input.psz_uri );
330 vlc_mutex_unlock( &p_playlist->object_lock );
335 /***************************************************************************
337 ***************************************************************************/
339 mediacontrol_StreamInformation *
340 mediacontrol_get_stream_information( mediacontrol_Instance *self,
341 mediacontrol_PositionKey a_key,
342 mediacontrol_Exception *exception )
344 mediacontrol_StreamInformation *retval;
345 input_thread_t *p_input = self->p_playlist->p_input;
348 retval = ( mediacontrol_StreamInformation* )malloc( sizeof( mediacontrol_StreamInformation ) );
351 RAISE( mediacontrol_InternalException, "Out of memory" );
357 /* No p_input defined */
358 retval->streamstatus = mediacontrol_UndefinedStatus;
359 retval->url = strdup( "None" );
360 retval->position = 0;
365 switch( var_GetInteger( p_input, "state" ) )
368 retval->streamstatus = mediacontrol_PlayingStatus;
371 retval->streamstatus = mediacontrol_PauseStatus;
374 retval->streamstatus = mediacontrol_InitStatus;
377 retval->streamstatus = mediacontrol_EndStatus;
380 retval->streamstatus = mediacontrol_UndefinedStatus;
384 retval->url = strdup( p_input->input.p_item->psz_uri );
386 /* TIME and LENGTH are in microseconds. We want them in ms */
387 var_Get( p_input, "time", &val);
388 retval->position = val.i_time / 1000;
390 var_Get( p_input, "length", &val);
391 retval->length = val.i_time / 1000;
393 retval->position = mediacontrol_unit_convert( p_input,
394 mediacontrol_MediaTime, a_key,
396 retval->length = mediacontrol_unit_convert( p_input,
397 mediacontrol_MediaTime, a_key,