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 *****************************************************************************/
33 #include <vlc_common.h>
38 #include "../libvlc.h"
39 #include "../stream_output/stream_output.h"
40 #include "../audio_output/aout_internal.h"
41 #include "../video_output/vout_control.h"
42 #include "input_interface.h"
45 struct input_resource_t
47 /* This lock is used to serialize request and protect
52 input_thread_t *p_input;
54 sout_instance_t *p_sout;
55 vout_thread_t *p_vout_free;
57 /* This lock is used to protect vout resources access (for hold)
58 * It is a special case because of embed video (possible deadlock
59 * between vout window request and vout holds in some(qt4) interface)
61 vlc_mutex_t lock_hold;
63 /* You need lock+lock_hold to write to the following variables and
64 * only lock or lock_hold to read them */
67 vout_thread_t **pp_vout;
69 aout_instance_t *p_aout;
73 static void DestroySout( input_resource_t *p_resource )
76 if( p_resource->p_sout )
77 sout_DeleteInstance( p_resource->p_sout );
79 p_resource->p_sout = NULL;
82 static sout_instance_t *DetachSout( input_resource_t *p_resource )
84 sout_instance_t *p_sout = p_resource->p_sout;
85 p_resource->p_sout = NULL;
90 static sout_instance_t *RequestSout( input_resource_t *p_resource,
91 sout_instance_t *p_sout, const char *psz_sout )
94 if( !p_sout && !psz_sout )
96 if( p_resource->p_sout )
97 msg_Dbg( p_resource->p_sout, "destroying useless sout" );
98 DestroySout( p_resource );
102 assert( p_resource->p_input );
103 assert( !p_sout || ( !p_resource->p_sout && !psz_sout ) );
105 /* Check the validity of the sout */
106 if( p_resource->p_sout &&
107 strcmp( p_resource->p_sout->psz_sout, psz_sout ) )
109 msg_Dbg( p_resource->p_input, "destroying unusable sout" );
110 DestroySout( p_resource );
115 if( p_resource->p_sout )
118 msg_Dbg( p_resource->p_input, "reusing sout" );
119 msg_Dbg( p_resource->p_input, "you probably want to use gather stream_out" );
120 vlc_object_attach( p_resource->p_sout, p_resource->p_input );
124 /* Create a new one */
125 p_resource->p_sout = sout_NewInstance( p_resource->p_input, psz_sout );
128 p_sout = p_resource->p_sout;
129 p_resource->p_sout = NULL;
135 vlc_object_detach( p_sout );
136 p_resource->p_sout = p_sout;
146 static void DestroyVout( input_resource_t *p_resource )
148 assert( p_resource->i_vout == 0 );
150 if( p_resource->p_vout_free )
151 vout_CloseAndRelease( p_resource->p_vout_free );
153 p_resource->p_vout_free = NULL;
155 static vout_thread_t *DetachVout( input_resource_t *p_resource )
157 vlc_assert_locked( &p_resource->lock );
158 assert( p_resource->i_vout == 0 );
159 vout_thread_t *p_vout = p_resource->p_vout_free;
160 p_resource->p_vout_free = NULL;
165 static void DisplayVoutTitle( input_resource_t *p_resource,
166 vout_thread_t *p_vout )
168 assert( p_resource->p_input );
170 /* TODO display the title only one time for the same input ? */
172 input_item_t *p_item = input_GetItem( p_resource->p_input );
174 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
175 if( psz_nowplaying && *psz_nowplaying )
177 vout_DisplayTitle( p_vout, psz_nowplaying );
181 char *psz_artist = input_item_GetArtist( p_item );
182 char *psz_name = input_item_GetTitle( p_item );
184 if( !psz_name || *psz_name == '\0' )
187 psz_name = input_item_GetName( p_item );
189 if( psz_artist && *psz_artist )
192 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
194 vout_DisplayTitle( p_vout, psz_string );
200 vout_DisplayTitle( p_vout, psz_name );
205 free( psz_nowplaying );
207 static vout_thread_t *RequestVout( input_resource_t *p_resource,
208 vout_thread_t *p_vout, video_format_t *p_fmt,
211 vlc_assert_locked( &p_resource->lock );
213 if( !p_vout && !p_fmt )
215 if( p_resource->p_vout_free )
217 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
218 vout_CloseAndRelease( p_resource->p_vout_free );
219 p_resource->p_vout_free = NULL;
224 assert( p_resource->p_input );
228 if( !p_vout && p_resource->p_vout_free )
230 msg_Dbg( p_resource->p_input, "trying to reuse free vout" );
231 p_vout = p_resource->p_vout_free;
233 p_resource->p_vout_free = NULL;
237 assert( p_vout != p_resource->p_vout_free );
239 vlc_mutex_lock( &p_resource->lock_hold );
240 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
241 vlc_mutex_unlock( &p_resource->lock_hold );
245 vout_configuration_t cfg = {
249 p_vout = vout_Request( p_resource->p_input, &cfg );
253 DisplayVoutTitle( p_resource, p_vout );
255 vlc_mutex_lock( &p_resource->lock_hold );
256 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
257 vlc_mutex_unlock( &p_resource->lock_hold );
265 vlc_mutex_lock( &p_resource->lock_hold );
266 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
267 const int i_vout_active = p_resource->i_vout;
268 vlc_mutex_unlock( &p_resource->lock_hold );
270 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
273 msg_Dbg( p_resource->p_input, "detroying vout (already one saved or active)" );
274 vout_CloseAndRelease( p_vout );
278 msg_Dbg( p_resource->p_input, "saving a free vout" );
279 vout_Flush( p_vout, 1 );
280 vout_FlushSubpictureChannel( p_vout, -1 );
282 p_resource->p_vout_free = p_vout;
287 static vout_thread_t *HoldVout( input_resource_t *p_resource )
289 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
290 vlc_mutex_lock( &p_resource->lock_hold );
292 vout_thread_t *p_vout = p_resource->i_vout > 0 ? p_resource->pp_vout[0] : NULL;
294 vlc_object_hold( p_vout );
296 vlc_mutex_unlock( &p_resource->lock_hold );
301 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
304 vout_thread_t **pp_vout;
309 vlc_mutex_lock( &p_resource->lock_hold );
311 if( p_resource->i_vout <= 0 )
314 pp_vout = malloc( p_resource->i_vout * sizeof(*pp_vout) );
319 *pi_vout = p_resource->i_vout;
321 for( int i = 0; i < p_resource->i_vout; i++ )
323 pp_vout[i] = p_resource->pp_vout[i];
324 vlc_object_hold( pp_vout[i] );
328 vlc_mutex_unlock( &p_resource->lock_hold );
332 static void DestroyAout( input_resource_t *p_resource )
334 if( p_resource->p_aout )
335 vlc_object_release( p_resource->p_aout );
336 p_resource->p_aout = NULL;
338 static aout_instance_t *DetachAout( input_resource_t *p_resource )
340 vlc_assert_locked( &p_resource->lock );
341 vlc_mutex_lock( &p_resource->lock_hold );
343 aout_instance_t *p_aout = p_resource->p_aout;
344 p_resource->p_aout = NULL;
346 vlc_mutex_unlock( &p_resource->lock_hold );
351 static aout_instance_t *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
353 vlc_assert_locked( &p_resource->lock );
354 assert( p_resource->p_input );
358 msg_Dbg( p_resource->p_input, "releasing aout" );
359 vlc_object_release( p_aout );
364 p_aout = p_resource->p_aout;
367 msg_Dbg( p_resource->p_input, "creating aout" );
368 p_aout = aout_New( p_resource->p_input );
370 vlc_mutex_lock( &p_resource->lock_hold );
371 p_resource->p_aout = p_aout;
372 vlc_mutex_unlock( &p_resource->lock_hold );
376 msg_Dbg( p_resource->p_input, "reusing aout" );
382 vlc_object_detach( p_aout );
383 vlc_object_attach( p_aout, p_resource->p_input );
384 vlc_object_hold( p_aout );
388 static aout_instance_t *HoldAout( input_resource_t *p_resource )
390 vlc_mutex_lock( &p_resource->lock_hold );
392 aout_instance_t *p_aout = p_resource->p_aout;
394 vlc_object_hold( p_aout );
396 vlc_mutex_unlock( &p_resource->lock_hold );
402 input_resource_t *input_resource_New( void )
404 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
408 vlc_mutex_init( &p_resource->lock );
409 vlc_mutex_init( &p_resource->lock_hold );
413 void input_resource_Delete( input_resource_t *p_resource )
415 DestroySout( p_resource );
416 DestroyVout( p_resource );
417 DestroyAout( p_resource );
419 vlc_mutex_destroy( &p_resource->lock_hold );
420 vlc_mutex_destroy( &p_resource->lock );
424 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
426 vlc_mutex_lock( &p_resource->lock );
428 if( p_resource->p_input && !p_input )
430 if( p_resource->p_aout )
431 vlc_object_detach( p_resource->p_aout );
433 assert( p_resource->i_vout == 0 );
434 if( p_resource->p_vout_free )
435 vlc_object_detach( p_resource->p_vout_free );
437 if( p_resource->p_sout )
438 vlc_object_detach( p_resource->p_sout );
442 p_resource->p_input = p_input;
444 vlc_mutex_unlock( &p_resource->lock );
447 input_resource_t *input_resource_Detach( input_resource_t *p_resource )
449 input_resource_t *p_ret = input_resource_New();
453 vlc_mutex_lock( &p_resource->lock );
454 assert( !p_resource->p_input );
455 p_ret->p_sout = DetachSout( p_resource );
456 p_ret->p_vout_free = DetachVout( p_resource );
457 p_ret->p_aout = DetachAout( p_resource );
458 vlc_mutex_unlock( &p_resource->lock );
463 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
464 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
466 vlc_mutex_lock( &p_resource->lock );
467 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, b_recycle );
468 vlc_mutex_unlock( &p_resource->lock );
472 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
474 return HoldVout( p_resource );
477 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
480 HoldVouts( p_resource, ppp_vout, pi_vout );
483 void input_resource_TerminateVout( input_resource_t *p_resource )
485 input_resource_RequestVout( p_resource, NULL, NULL, false );
487 bool input_resource_HasVout( input_resource_t *p_resource )
489 vlc_mutex_lock( &p_resource->lock );
490 assert( !p_resource->p_input );
491 const bool b_vout = p_resource->p_vout_free != NULL;
492 vlc_mutex_unlock( &p_resource->lock );
498 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
500 vlc_mutex_lock( &p_resource->lock );
501 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
502 vlc_mutex_unlock( &p_resource->lock );
506 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
508 return HoldAout( p_resource );
511 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
513 vlc_mutex_lock( &p_resource->lock );
514 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
515 vlc_mutex_unlock( &p_resource->lock );
519 void input_resource_TerminateSout( input_resource_t *p_resource )
521 input_resource_RequestSout( p_resource, NULL, NULL );