1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2008 Laurent Aimar
7 * Authors: Laurent Aimar < fenrir _AT_ videolan _DOT_ org >
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
36 #include "../libvlc.h"
37 #include "../stream_output/stream_output.h"
38 #include "../audio_output/aout_internal.h"
39 #include "../video_output/vout_control.h"
40 #include "input_interface.h"
43 struct input_resource_t
45 /* This lock is used to serialize request and protect
50 input_thread_t *p_input;
52 sout_instance_t *p_sout;
53 vout_thread_t *p_vout_free;
55 /* This lock is used to protect vout resources access (for hold)
56 * It is a special case because of embed video (possible deadlock
57 * between vout window request and vout holds in some(qt4) interface)
59 vlc_mutex_t lock_hold;
61 /* You need lock+lock_hold to write to the following variables and
62 * only lock or lock_hold to read them */
65 vout_thread_t **pp_vout;
67 aout_instance_t *p_aout;
71 static void DestroySout( input_resource_t *p_resource )
74 if( p_resource->p_sout )
75 sout_DeleteInstance( p_resource->p_sout );
77 p_resource->p_sout = NULL;
80 static sout_instance_t *DetachSout( input_resource_t *p_resource )
82 sout_instance_t *p_sout = p_resource->p_sout;
83 p_resource->p_sout = NULL;
88 static sout_instance_t *RequestSout( input_resource_t *p_resource,
89 sout_instance_t *p_sout, const char *psz_sout )
92 if( !p_sout && !psz_sout )
94 if( p_resource->p_sout )
95 msg_Dbg( p_resource->p_sout, "destroying useless sout" );
96 DestroySout( p_resource );
100 assert( p_resource->p_input );
101 assert( !p_sout || ( !p_resource->p_sout && !psz_sout ) );
103 /* Check the validity of the sout */
104 if( p_resource->p_sout &&
105 strcmp( p_resource->p_sout->psz_sout, psz_sout ) )
107 msg_Dbg( p_resource->p_input, "destroying unusable sout" );
108 DestroySout( p_resource );
113 if( p_resource->p_sout )
116 msg_Dbg( p_resource->p_input, "reusing sout" );
117 msg_Dbg( p_resource->p_input, "you probably want to use gather stream_out" );
118 vlc_object_attach( p_resource->p_sout, p_resource->p_input );
122 /* Create a new one */
123 p_resource->p_sout = sout_NewInstance( p_resource->p_input, psz_sout );
126 p_sout = p_resource->p_sout;
127 p_resource->p_sout = NULL;
133 vlc_object_detach( p_sout );
134 p_resource->p_sout = p_sout;
144 static void DestroyVout( input_resource_t *p_resource )
146 assert( p_resource->i_vout == 0 );
148 if( p_resource->p_vout_free )
149 vout_CloseAndRelease( p_resource->p_vout_free );
151 p_resource->p_vout_free = NULL;
153 static vout_thread_t *DetachVout( input_resource_t *p_resource )
155 assert( p_resource->i_vout == 0 );
156 vout_thread_t *p_vout = p_resource->p_vout_free;
157 p_resource->p_vout_free = NULL;
162 static void DisplayVoutTitle( input_resource_t *p_resource,
163 vout_thread_t *p_vout )
165 assert( p_resource->p_input );
167 /* TODO display the title only one time for the same input ? */
169 input_item_t *p_item = input_GetItem( p_resource->p_input );
171 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
172 if( psz_nowplaying && *psz_nowplaying )
174 vout_DisplayTitle( p_vout, psz_nowplaying );
178 char *psz_artist = input_item_GetArtist( p_item );
179 char *psz_name = input_item_GetTitle( p_item );
181 if( !psz_name || *psz_name == '\0' )
184 psz_name = input_item_GetName( p_item );
186 if( psz_artist && *psz_artist )
189 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
191 vout_DisplayTitle( p_vout, psz_string );
197 vout_DisplayTitle( p_vout, psz_name );
202 free( psz_nowplaying );
204 static vout_thread_t *RequestVout( input_resource_t *p_resource,
205 vout_thread_t *p_vout, video_format_t *p_fmt,
208 if( !p_vout && !p_fmt )
210 if( p_resource->p_vout_free )
212 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
213 vout_CloseAndRelease( p_resource->p_vout_free );
214 p_resource->p_vout_free = NULL;
219 assert( p_resource->p_input );
223 if( !p_vout && p_resource->p_vout_free )
225 msg_Dbg( p_resource->p_input, "trying to reuse free vout" );
226 p_vout = p_resource->p_vout_free;
228 p_resource->p_vout_free = NULL;
232 assert( p_vout != p_resource->p_vout_free );
234 vlc_mutex_lock( &p_resource->lock_hold );
235 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
236 vlc_mutex_unlock( &p_resource->lock_hold );
240 p_vout = vout_Request( p_resource->p_input, p_vout, p_fmt );
244 DisplayVoutTitle( p_resource, p_vout );
246 vlc_mutex_lock( &p_resource->lock_hold );
247 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
248 vlc_mutex_unlock( &p_resource->lock_hold );
256 vlc_mutex_lock( &p_resource->lock_hold );
257 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
258 const int i_vout_active = p_resource->i_vout;
259 vlc_mutex_unlock( &p_resource->lock_hold );
261 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
264 msg_Dbg( p_resource->p_input, "detroying vout (already one saved or active)" );
265 vout_CloseAndRelease( p_vout );
269 msg_Dbg( p_resource->p_input, "saving a free vout" );
270 vout_Flush( p_vout, 1 );
271 spu_Control( vout_GetSpu( p_vout ), SPU_CHANNEL_CLEAR, -1 );
273 p_resource->p_vout_free = p_vout;
278 static vout_thread_t *HoldVout( input_resource_t *p_resource )
280 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
281 vlc_mutex_lock( &p_resource->lock_hold );
283 vout_thread_t *p_vout = p_resource->i_vout > 0 ? p_resource->pp_vout[0] : NULL;
285 vlc_object_hold( p_vout );
287 vlc_mutex_unlock( &p_resource->lock_hold );
291 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout, int *pi_vout )
293 vout_thread_t **pp_vout;
298 vlc_mutex_lock( &p_resource->lock_hold );
300 if( p_resource->i_vout <= 0 )
303 pp_vout = calloc( p_resource->i_vout, sizeof(*pp_vout) );
308 *pi_vout = p_resource->i_vout;
310 for( int i = 0; i < p_resource->i_vout; i++ )
312 pp_vout[i] = p_resource->pp_vout[i];
313 vlc_object_hold( pp_vout[i] );
317 vlc_mutex_unlock( &p_resource->lock_hold );
321 static void DestroyAout( input_resource_t *p_resource )
323 if( p_resource->p_aout )
324 vlc_object_release( p_resource->p_aout );
325 p_resource->p_aout = NULL;
327 static aout_instance_t *DetachAout( input_resource_t *p_resource )
329 vlc_mutex_lock( &p_resource->lock_hold );
331 aout_instance_t *p_aout = p_resource->p_aout;
332 p_resource->p_aout = NULL;
334 vlc_mutex_unlock( &p_resource->lock_hold );
339 static aout_instance_t *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
341 assert( p_resource->p_input );
345 msg_Dbg( p_resource->p_input, "releasing aout" );
346 vlc_object_release( p_aout );
351 p_aout = p_resource->p_aout;
354 msg_Dbg( p_resource->p_input, "creating aout" );
355 p_aout = aout_New( p_resource->p_input );
357 vlc_mutex_lock( &p_resource->lock_hold );
358 p_resource->p_aout = p_aout;
359 vlc_mutex_unlock( &p_resource->lock_hold );
363 msg_Dbg( p_resource->p_input, "reusing aout" );
369 vlc_object_detach( p_aout );
370 vlc_object_attach( p_aout, p_resource->p_input );
371 vlc_object_hold( p_aout );
375 static aout_instance_t *HoldAout( input_resource_t *p_resource )
377 vlc_mutex_lock( &p_resource->lock_hold );
379 aout_instance_t *p_aout = p_resource->p_aout;
381 vlc_object_hold( p_aout );
383 vlc_mutex_unlock( &p_resource->lock_hold );
389 input_resource_t *input_resource_New( void )
391 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
395 vlc_mutex_init( &p_resource->lock );
396 vlc_mutex_init( &p_resource->lock_hold );
400 void input_resource_Delete( input_resource_t *p_resource )
402 DestroySout( p_resource );
403 DestroyVout( p_resource );
404 DestroyAout( p_resource );
406 vlc_mutex_destroy( &p_resource->lock_hold );
407 vlc_mutex_destroy( &p_resource->lock );
411 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
413 vlc_mutex_lock( &p_resource->lock );
415 if( p_resource->p_input && !p_input )
417 if( p_resource->p_aout )
418 vlc_object_detach( p_resource->p_aout );
420 assert( p_resource->i_vout == 0 );
421 if( p_resource->p_vout_free )
422 vlc_object_detach( p_resource->p_vout_free );
424 if( p_resource->p_sout )
425 vlc_object_detach( p_resource->p_sout );
429 p_resource->p_input = p_input;
431 vlc_mutex_unlock( &p_resource->lock );
434 input_resource_t *input_resource_Detach( input_resource_t *p_resource )
436 input_resource_t *p_ret = input_resource_New();
440 vlc_mutex_lock( &p_resource->lock );
441 assert( !p_resource->p_input );
442 p_ret->p_sout = DetachSout( p_resource );
443 p_ret->p_vout_free = DetachVout( p_resource );
444 p_ret->p_aout = DetachAout( p_resource );
445 vlc_mutex_unlock( &p_resource->lock );
450 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
451 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
453 vlc_mutex_lock( &p_resource->lock );
454 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, b_recycle );
455 vlc_mutex_unlock( &p_resource->lock );
459 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
461 return HoldVout( p_resource );
463 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout, int *pi_vout )
465 HoldVouts( p_resource, ppp_vout, pi_vout );
467 void input_resource_TerminateVout( input_resource_t *p_resource )
469 input_resource_RequestVout( p_resource, NULL, NULL, false );
471 bool input_resource_HasVout( input_resource_t *p_resource )
473 vlc_mutex_lock( &p_resource->lock );
474 assert( !p_resource->p_input );
475 const bool b_vout = p_resource->p_vout_free != NULL;
476 vlc_mutex_unlock( &p_resource->lock );
482 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
484 vlc_mutex_lock( &p_resource->lock );
485 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
486 vlc_mutex_unlock( &p_resource->lock );
490 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
492 return HoldAout( p_resource );
495 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
497 vlc_mutex_lock( &p_resource->lock );
498 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
499 vlc_mutex_unlock( &p_resource->lock );
503 void input_resource_TerminateSout( input_resource_t *p_resource )
505 input_resource_RequestSout( p_resource, NULL, NULL );