9c13dbffa16c31ad156f5a4b6bbc83252c8d10fc
[vlc.git] / src / control / mediacontrol_core.c
1 /*****************************************************************************
2  * core.c: Core functions : init, playlist, stream management
3  *****************************************************************************
4  * Copyright (C) 2005 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr>
8  *
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.
13  *
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.
18  *
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22  *****************************************************************************/
23
24 #ifdef HAVE_CONFIG_H
25 # include "config.h"
26 #endif
27
28 #include "mediacontrol_internal.h"
29 #include <vlc/mediacontrol.h>
30
31 #include <vlc/libvlc.h>
32 #include <vlc_common.h>
33 #include <vlc_interface.h>
34 #include <vlc_playlist.h>
35
36 #include <vlc_vout.h>
37 #include <vlc_aout.h>
38 #include <vlc_input.h>
39 #include <vlc_osd.h>
40
41 #include <stdlib.h>                                      /* malloc(), free() */
42 #include <string.h>
43
44 #include <errno.h>                                                 /* ENOMEM */
45 #include <stdio.h>
46 #include <ctype.h>
47
48 #ifdef HAVE_UNISTD_H
49 #    include <unistd.h>
50 #endif
51 #ifdef HAVE_SYS_TIME_H
52 #    include <sys/time.h>
53 #endif
54 #ifdef HAVE_SYS_TYPES_H
55 #    include <sys/types.h>
56 #endif
57
58 mediacontrol_Instance* mediacontrol_new( int argc, char** argv, mediacontrol_Exception *exception )
59 {
60     mediacontrol_Instance* retval;
61     libvlc_exception_t ex;
62
63     libvlc_exception_init( &ex );
64     mediacontrol_exception_init( exception );
65
66     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
67     if( !retval )
68         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
69
70     retval->p_instance = libvlc_new( argc, (const char**)argv, &ex );
71     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
72     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
73     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
74     return retval;
75 }
76
77 void
78 mediacontrol_exit( mediacontrol_Instance *self )
79 {
80     libvlc_release( self->p_instance );
81 }
82
83 libvlc_instance_t*
84 mediacontrol_get_libvlc_instance( mediacontrol_Instance *self )
85 {
86     return self->p_instance;
87 }
88
89 libvlc_media_player_t*
90 mediacontrol_get_media_player( mediacontrol_Instance *self )
91 {
92     return self->p_media_player;
93 }
94
95 mediacontrol_Instance *
96 mediacontrol_new_from_instance( libvlc_instance_t* p_instance,
97                 mediacontrol_Exception *exception )
98 {
99     mediacontrol_Instance* retval;
100     libvlc_exception_t ex;
101
102     libvlc_exception_init( &ex );
103
104     retval = ( mediacontrol_Instance* )malloc( sizeof( mediacontrol_Instance ) );
105     if( ! retval )
106     {
107         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
108     }
109     retval->p_instance = p_instance;
110     retval->p_media_player = libvlc_media_player_new( retval->p_instance, &ex );
111     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
112     return retval;
113 }
114
115 /**************************************************************************
116  * Playback management
117  **************************************************************************/
118 mediacontrol_Position*
119 mediacontrol_get_media_position( mediacontrol_Instance *self,
120                                  const mediacontrol_PositionOrigin an_origin,
121                                  const mediacontrol_PositionKey a_key,
122                                  mediacontrol_Exception *exception )
123 {
124     mediacontrol_Position* retval = NULL;
125     libvlc_exception_t ex;
126     int64_t pos;
127
128     mediacontrol_exception_init( exception );
129     libvlc_exception_init( &ex );
130
131     retval = ( mediacontrol_Position* )malloc( sizeof( mediacontrol_Position ) );
132     retval->origin = an_origin;
133     retval->key = a_key;
134
135     if(  an_origin != mediacontrol_AbsolutePosition )
136     {
137         free( retval );
138         /* Relative or ModuloPosition make no sense */
139         RAISE_NULL( mediacontrol_PositionOriginNotSupported,
140                     "Only absolute position is valid." );
141     }
142
143     /* We are asked for an AbsolutePosition. */
144     pos = libvlc_media_player_get_time( self->p_media_player, &ex );
145
146     if( a_key == mediacontrol_MediaTime )
147     {
148         retval->value = pos;
149     }
150     else
151     {
152         retval->value = private_mediacontrol_unit_convert( self->p_media_player,
153                                                            mediacontrol_MediaTime,
154                                                            a_key,
155                                                            pos );
156     }
157     return retval;
158 }
159
160 /* Sets the media position */
161 void
162 mediacontrol_set_media_position( mediacontrol_Instance *self,
163                                  const mediacontrol_Position * a_position,
164                                  mediacontrol_Exception *exception )
165 {
166     libvlc_exception_t ex;
167     int64_t i_pos;
168
169     libvlc_exception_init( &ex );
170     mediacontrol_exception_init( exception );
171
172     i_pos = private_mediacontrol_position2microsecond( self->p_media_player, a_position );
173     libvlc_media_player_set_time( self->p_media_player, i_pos / 1000, &ex );
174     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
175 }
176
177 /* Starts playing a stream */
178 /*
179  * Known issues: since moving in the playlist using playlist_Next
180  * or playlist_Prev implies starting to play items, the a_position
181  * argument will be only honored for the 1st item in the list.
182  *
183  * XXX:FIXME split moving in the playlist and playing items two
184  * different actions or make playlist_<Next|Prev> accept a time
185  * value to start to play from.
186  */
187 void
188 mediacontrol_start( mediacontrol_Instance *self,
189                     const mediacontrol_Position * a_position,
190                     mediacontrol_Exception *exception )
191 {
192     libvlc_media_t * p_media;
193     char * psz_name;
194     libvlc_exception_t ex;
195
196     mediacontrol_exception_init( exception );
197     libvlc_exception_init( &ex );
198
199     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
200     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
201
202     if ( ! p_media )
203     {
204         /* No media was defined. */
205         RAISE( mediacontrol_PlaylistException, "No defined media." );
206     }
207     else
208     {
209         /* A media was defined. Get its mrl to reuse it, but reset the options
210            (because start-time may have been set on the previous invocation */
211         psz_name = libvlc_media_get_mrl( p_media, &ex );
212         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
213
214         /* Create a new media */
215         p_media = libvlc_media_new( self->p_instance, psz_name, &ex );
216         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
217
218         if( a_position->value )
219         {
220             char * psz_from;
221             libvlc_time_t i_from;
222
223             /* A start position was specified. Add it to media options */
224             psz_from = ( char * )malloc( 20 * sizeof( char ) );
225             i_from = private_mediacontrol_position2microsecond( self->p_media_player, a_position ) / 1000000;
226             snprintf( psz_from, 20, "start-time=%"PRId64, i_from );
227             libvlc_media_add_option( p_media, psz_from, &ex );
228             HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
229         }
230
231         libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
232         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
233
234         libvlc_media_player_play( self->p_media_player, &ex );
235         HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
236     }
237 }
238
239 void
240 mediacontrol_pause( mediacontrol_Instance *self,
241                     mediacontrol_Exception *exception )
242 {
243     libvlc_exception_t ex;
244
245     mediacontrol_exception_init( exception );
246     libvlc_exception_init( &ex );
247     libvlc_media_player_pause( self->p_media_player, &ex );
248     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
249 }
250
251 void
252 mediacontrol_resume( mediacontrol_Instance *self,
253                      mediacontrol_Exception *exception )
254 {
255     libvlc_exception_t ex;
256
257     mediacontrol_exception_init( exception );
258     libvlc_exception_init( &ex );
259     libvlc_media_player_pause( self->p_media_player, &ex );
260     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
261 }
262
263 void
264 mediacontrol_stop( mediacontrol_Instance *self,
265                    mediacontrol_Exception *exception )
266 {
267     libvlc_exception_t ex;
268
269     mediacontrol_exception_init( exception );
270     libvlc_exception_init( &ex );
271     libvlc_media_player_stop( self->p_media_player, &ex );
272     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
273 }
274
275 /**************************************************************************
276  * File management
277  **************************************************************************/
278
279 void
280 mediacontrol_set_mrl( mediacontrol_Instance *self,
281                       const char * psz_file,
282                       mediacontrol_Exception *exception )
283 {
284     libvlc_media_t * p_media;
285     libvlc_exception_t ex;
286
287     mediacontrol_exception_init( exception );
288     libvlc_exception_init( &ex );
289
290     p_media = libvlc_media_new( self->p_instance, psz_file, &ex );
291     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
292
293     libvlc_media_player_set_media( self->p_media_player, p_media, &ex );
294     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
295 }
296
297 char *
298 mediacontrol_get_mrl( mediacontrol_Instance *self,
299                       mediacontrol_Exception *exception )
300 {
301     libvlc_media_t * p_media;
302     libvlc_exception_t ex;
303
304     mediacontrol_exception_init( exception );
305     libvlc_exception_init( &ex );
306
307     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
308     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
309
310     if ( ! p_media )
311     {
312         return strdup( "" );
313     }
314     else
315     {
316         char * psz_mrl;
317
318         psz_mrl = libvlc_media_get_mrl( p_media, &ex );
319         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
320         return psz_mrl;
321     }
322 }
323
324 /***************************************************************************
325  * Status feedback
326  ***************************************************************************/
327
328 mediacontrol_StreamInformation *
329 mediacontrol_get_stream_information( mediacontrol_Instance *self,
330                                      mediacontrol_PositionKey a_key,
331                                      mediacontrol_Exception *exception )
332 {
333     (void)a_key;
334     mediacontrol_StreamInformation *retval = NULL;
335     libvlc_media_t * p_media;
336     libvlc_exception_t ex;
337
338     libvlc_exception_init( &ex );
339
340     retval = ( mediacontrol_StreamInformation* )
341                             malloc( sizeof( mediacontrol_StreamInformation ) );
342     if( ! retval )
343     {
344         RAISE( mediacontrol_InternalException, "Out of memory" );
345         return NULL;
346     }
347
348     p_media = libvlc_media_player_get_media( self->p_media_player, &ex );
349     HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
350     if( ! p_media )
351     {
352         /* No p_media defined */
353         retval->streamstatus = mediacontrol_UndefinedStatus;
354         retval->url          = strdup( "" );
355         retval->position     = 0;
356         retval->length       = 0;
357     }
358     else
359     {
360         libvlc_state_t state;
361         state = libvlc_media_player_get_state( self->p_media_player, &ex );
362         HANDLE_LIBVLC_EXCEPTION_NULL( &ex );
363         switch( state )
364         {
365         case libvlc_NothingSpecial:
366             retval->streamstatus = mediacontrol_UndefinedStatus;
367             break;
368         case libvlc_Opening :
369             retval->streamstatus = mediacontrol_InitStatus;
370             break;
371         case libvlc_Buffering:
372             retval->streamstatus = mediacontrol_BufferingStatus;
373             break;
374         case libvlc_Playing:
375             retval->streamstatus = mediacontrol_PlayingStatus;
376             break;
377         case libvlc_Paused:
378             retval->streamstatus = mediacontrol_PauseStatus;
379             break;
380         case libvlc_Stopped:
381             retval->streamstatus = mediacontrol_StopStatus;
382             break;
383         case libvlc_Forward:
384             retval->streamstatus = mediacontrol_ForwardStatus;
385             break;
386         case libvlc_Backward:
387             retval->streamstatus = mediacontrol_BackwardStatus;
388             break;
389         case libvlc_Ended:
390             retval->streamstatus = mediacontrol_EndStatus;
391             break;
392         case libvlc_Error:
393             retval->streamstatus = mediacontrol_ErrorStatus;
394             break;
395         default :
396             retval->streamstatus = mediacontrol_UndefinedStatus;
397             break;
398         }
399
400         retval->url = libvlc_media_get_mrl( p_media, &ex );
401         
402         retval->position = libvlc_media_player_get_time( self->p_media_player, &ex );
403         if( libvlc_exception_raised( &ex ) )
404         {
405             libvlc_exception_clear( &ex );
406             retval->position = 0;
407         }
408
409         retval->length = libvlc_media_player_get_length( self->p_media_player, &ex );
410         if( libvlc_exception_raised( &ex ) )
411         {
412             libvlc_exception_clear( &ex );
413             retval->length = 0;
414         }
415
416     }
417     return retval;
418 }