1 /*****************************************************************************
2 * core.c: Core functions : init, playlist, stream management
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
5 * $Id: vlc.c 10786 2005-04-23 23:19:17Z zorglub $
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 */
50 #ifdef HAVE_SYS_TIME_H
51 # include <sys/time.h>
53 #include <sys/types.h>
55 #define RAISE( c, m ) exception->code = c; \
56 exception->message = strdup(m);
59 mediacontrol_Instance* mediacontrol_new_from_object( vlc_object_t* p_object,
60 mediacontrol_Exception *exception )
62 mediacontrol_Instance* retval;
65 p_vlc = vlc_object_find( p_object, VLC_OBJECT_ROOT, FIND_PARENT );
68 RAISE( mediacontrol_InternalException, "Unable to initialize VLC" );
71 retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
72 retval->p_vlc = p_vlc;
73 retval->vlc_object_id = p_vlc->i_object_id;
75 /* We can keep references on these, which should not change. Is it true ? */
76 retval->p_playlist = vlc_object_find( p_vlc, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
77 retval->p_intf = vlc_object_find( p_vlc, VLC_OBJECT_INTF, FIND_ANYWHERE );
79 if( ! retval->p_playlist || ! retval->p_intf )
81 RAISE( mediacontrol_InternalException, "No available interface" );
88 /**************************************************************************
90 **************************************************************************/
91 mediacontrol_Position*
92 mediacontrol_get_media_position( mediacontrol_Instance *self,
93 const mediacontrol_PositionOrigin an_origin,
94 const mediacontrol_PositionKey a_key,
95 mediacontrol_Exception *exception )
97 mediacontrol_Position* retval;
99 input_thread_t * p_input = self->p_playlist->p_input;
101 exception = mediacontrol_exception_init( exception );
103 retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
104 retval->origin = an_origin;
110 RAISE( mediacontrol_InternalException, "No input thread." );
117 if( an_origin == mediacontrol_RelativePosition
118 || an_origin == mediacontrol_ModuloPosition )
120 /* Relative or ModuloPosition make no sense */
125 /* We are asked for an AbsolutePosition. */
127 var_Get( p_input, "time", &val );
128 /* FIXME: check val.i_time > 0 */
130 retval->value = mediacontrol_unit_convert( p_input,
131 mediacontrol_MediaTime,
137 /* Sets the media position */
139 mediacontrol_set_media_position( mediacontrol_Instance *self,
140 const mediacontrol_Position * a_position,
141 mediacontrol_Exception *exception )
144 input_thread_t * p_input = self->p_playlist->p_input;
146 exception=mediacontrol_exception_init( exception );
149 RAISE( mediacontrol_InternalException, "No input thread." );
153 if( !var_GetBool( p_input, "seekable" ) )
155 RAISE( mediacontrol_InvalidPosition, "Stream not seekable" );
159 val.i_time = mediacontrol_position2microsecond( p_input, a_position );
160 var_Set( p_input, "time", val );
164 /* Starts playing a stream */
166 mediacontrol_start( mediacontrol_Instance *self,
167 const mediacontrol_Position * a_position,
168 mediacontrol_Exception *exception )
170 playlist_t * p_playlist = self->p_playlist;
172 exception = mediacontrol_exception_init( exception );
175 RAISE( mediacontrol_PlaylistException, "No available playlist" );
179 vlc_mutex_lock( &p_playlist->object_lock );
180 if( p_playlist->i_size )
184 vlc_mutex_unlock( &p_playlist->object_lock );
187 val.i_int = mediacontrol_position2microsecond( p_playlist->p_input, a_position ) / 1000000;
188 var_Set( p_playlist, "start-time", val );
190 playlist_Play( p_playlist );
194 RAISE( mediacontrol_PlaylistException, "Empty playlist." );
195 vlc_mutex_unlock( &p_playlist->object_lock );
203 mediacontrol_pause( mediacontrol_Instance *self,
204 const mediacontrol_Position * a_position,
205 mediacontrol_Exception *exception )
207 input_thread_t *p_input = self->p_playlist->p_input;;
209 /* FIXME: use the a_position parameter */
210 exception=mediacontrol_exception_init( exception );
211 if( p_input != NULL )
213 var_SetInteger( p_input, "state", PAUSE_S );
217 RAISE( mediacontrol_InternalException, "No input" );
224 mediacontrol_resume( mediacontrol_Instance *self,
225 const mediacontrol_Position * a_position,
226 mediacontrol_Exception *exception )
228 input_thread_t *p_input = self->p_playlist->p_input;
230 /* FIXME: use the a_position parameter */
231 exception=mediacontrol_exception_init( exception );
232 if( p_input != NULL )
234 var_SetInteger( p_input, "state", PAUSE_S );
238 RAISE( mediacontrol_InternalException, "No input" );
243 mediacontrol_stop( mediacontrol_Instance *self,
244 const mediacontrol_Position * a_position,
245 mediacontrol_Exception *exception )
247 /* FIXME: use the a_position parameter */
248 exception=mediacontrol_exception_init( exception );
249 if( !self->p_playlist )
251 RAISE( mediacontrol_PlaylistException, "No playlist" );
255 playlist_Stop( self->p_playlist );
258 /**************************************************************************
259 * Playlist management
260 **************************************************************************/
263 mediacontrol_playlist_add_item( mediacontrol_Instance *self,
264 const char * psz_file,
265 mediacontrol_Exception *exception )
267 exception=mediacontrol_exception_init( exception );
268 if( !self->p_playlist )
270 RAISE( mediacontrol_InternalException, "No playlist" );
274 playlist_Add( self->p_playlist, psz_file, psz_file , PLAYLIST_REPLACE, 0 );
278 mediacontrol_playlist_clear( mediacontrol_Instance *self,
279 mediacontrol_Exception *exception )
281 exception=mediacontrol_exception_init( exception );
282 if( !self->p_playlist )
284 RAISE( mediacontrol_PlaylistException, "No playlist" );
288 playlist_Clear( self->p_playlist );
293 mediacontrol_PlaylistSeq *
294 mediacontrol_playlist_get_list( mediacontrol_Instance *self,
295 mediacontrol_Exception *exception )
297 mediacontrol_PlaylistSeq *retval;
299 playlist_t * p_playlist = self->p_playlist;
302 exception=mediacontrol_exception_init( exception );
305 RAISE( mediacontrol_PlaylistException, "No playlist" );
309 vlc_mutex_lock( &p_playlist->object_lock );
310 i_playlist_size = p_playlist->i_size;
312 retval = mediacontrol_PlaylistSeq__alloc( i_playlist_size );
314 for( i_index = 0 ; i_index < i_playlist_size ; i_index++ )
316 retval->data[i_index] = strdup( p_playlist->pp_items[i_index]->input.psz_uri );
318 vlc_mutex_unlock( &p_playlist->object_lock );
323 /***************************************************************************
325 ***************************************************************************/
327 mediacontrol_StreamInformation *
328 mediacontrol_get_stream_information( mediacontrol_Instance *self,
329 mediacontrol_PositionKey a_key,
330 mediacontrol_Exception *exception )
332 mediacontrol_StreamInformation *retval;
333 input_thread_t *p_input = self->p_playlist->p_input;
336 retval = ( mediacontrol_StreamInformation* )malloc( sizeof( mediacontrol_StreamInformation ) );
339 RAISE( mediacontrol_InternalException, "Out of memory" );
345 /* No p_input defined */
346 retval->streamstatus = mediacontrol_UndefinedStatus;
347 retval->url = strdup( "None" );
348 retval->position = 0;
353 switch( var_GetInteger( p_input, "state" ) )
356 retval->streamstatus = mediacontrol_PlayingStatus;
359 retval->streamstatus = mediacontrol_PauseStatus;
362 retval->streamstatus = mediacontrol_InitStatus;
365 retval->streamstatus = mediacontrol_EndStatus;
368 retval->streamstatus = mediacontrol_UndefinedStatus;
372 retval->url = strdup( p_input->input.p_item->psz_uri );
374 /* TIME and LENGTH are in microseconds. We want them in ms */
375 var_Get( p_input, "time", &val);
376 retval->position = val.i_time / 1000;
378 var_Get( p_input, "length", &val);
379 retval->length = val.i_time / 1000;
381 retval->position = mediacontrol_unit_convert( p_input,
382 mediacontrol_MediaTime, a_key,
384 retval->length = mediacontrol_unit_convert( p_input,
385 mediacontrol_MediaTime, a_key,