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 assert( p_resource->i_vout == 0 );
158 vout_thread_t *p_vout = p_resource->p_vout_free;
159 p_resource->p_vout_free = NULL;
164 static void DisplayVoutTitle( input_resource_t *p_resource,
165 vout_thread_t *p_vout )
167 assert( p_resource->p_input );
169 /* TODO display the title only one time for the same input ? */
171 input_item_t *p_item = input_GetItem( p_resource->p_input );
173 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
174 if( psz_nowplaying && *psz_nowplaying )
176 vout_DisplayTitle( p_vout, psz_nowplaying );
180 char *psz_artist = input_item_GetArtist( p_item );
181 char *psz_name = input_item_GetTitle( p_item );
183 if( !psz_name || *psz_name == '\0' )
186 psz_name = input_item_GetName( p_item );
188 if( psz_artist && *psz_artist )
191 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
193 vout_DisplayTitle( p_vout, psz_string );
199 vout_DisplayTitle( p_vout, psz_name );
204 free( psz_nowplaying );
206 static vout_thread_t *RequestVout( input_resource_t *p_resource,
207 vout_thread_t *p_vout, video_format_t *p_fmt,
210 if( !p_vout && !p_fmt )
212 if( p_resource->p_vout_free )
214 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
215 vout_CloseAndRelease( p_resource->p_vout_free );
216 p_resource->p_vout_free = NULL;
221 assert( p_resource->p_input );
225 if( !p_vout && p_resource->p_vout_free )
227 msg_Dbg( p_resource->p_input, "trying to reuse free vout" );
228 p_vout = p_resource->p_vout_free;
230 p_resource->p_vout_free = NULL;
234 assert( p_vout != p_resource->p_vout_free );
236 vlc_mutex_lock( &p_resource->lock_hold );
237 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
238 vlc_mutex_unlock( &p_resource->lock_hold );
242 p_vout = vout_Request( p_resource->p_input, p_vout, p_fmt );
246 DisplayVoutTitle( p_resource, p_vout );
248 vlc_mutex_lock( &p_resource->lock_hold );
249 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
250 vlc_mutex_unlock( &p_resource->lock_hold );
258 vlc_mutex_lock( &p_resource->lock_hold );
259 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
260 const int i_vout_active = p_resource->i_vout;
261 vlc_mutex_unlock( &p_resource->lock_hold );
263 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
266 msg_Dbg( p_resource->p_input, "detroying vout (already one saved or active)" );
267 vout_CloseAndRelease( p_vout );
271 msg_Dbg( p_resource->p_input, "saving a free vout" );
272 vout_Flush( p_vout, 1 );
273 spu_Control( vout_GetSpu( p_vout ), SPU_CHANNEL_CLEAR, -1 );
275 p_resource->p_vout_free = p_vout;
280 static vout_thread_t *HoldVout( input_resource_t *p_resource )
282 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
283 vlc_mutex_lock( &p_resource->lock_hold );
285 vout_thread_t *p_vout = p_resource->i_vout > 0 ? p_resource->pp_vout[0] : NULL;
287 vlc_object_hold( p_vout );
289 vlc_mutex_unlock( &p_resource->lock_hold );
294 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
297 vout_thread_t **pp_vout;
302 vlc_mutex_lock( &p_resource->lock_hold );
304 if( p_resource->i_vout <= 0 )
307 pp_vout = malloc( p_resource->i_vout * sizeof(*pp_vout) );
312 *pi_vout = p_resource->i_vout;
314 for( int i = 0; i < p_resource->i_vout; i++ )
316 pp_vout[i] = p_resource->pp_vout[i];
317 vlc_object_hold( pp_vout[i] );
321 vlc_mutex_unlock( &p_resource->lock_hold );
325 static void DestroyAout( input_resource_t *p_resource )
327 if( p_resource->p_aout )
328 vlc_object_release( p_resource->p_aout );
329 p_resource->p_aout = NULL;
331 static aout_instance_t *DetachAout( input_resource_t *p_resource )
333 vlc_mutex_lock( &p_resource->lock_hold );
335 aout_instance_t *p_aout = p_resource->p_aout;
336 p_resource->p_aout = NULL;
338 vlc_mutex_unlock( &p_resource->lock_hold );
343 static aout_instance_t *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
345 assert( p_resource->p_input );
349 msg_Dbg( p_resource->p_input, "releasing aout" );
350 vlc_object_release( p_aout );
355 p_aout = p_resource->p_aout;
358 msg_Dbg( p_resource->p_input, "creating aout" );
359 p_aout = aout_New( p_resource->p_input );
361 vlc_mutex_lock( &p_resource->lock_hold );
362 p_resource->p_aout = p_aout;
363 vlc_mutex_unlock( &p_resource->lock_hold );
367 msg_Dbg( p_resource->p_input, "reusing aout" );
373 vlc_object_detach( p_aout );
374 vlc_object_attach( p_aout, p_resource->p_input );
375 vlc_object_hold( p_aout );
379 static aout_instance_t *HoldAout( input_resource_t *p_resource )
381 vlc_mutex_lock( &p_resource->lock_hold );
383 aout_instance_t *p_aout = p_resource->p_aout;
385 vlc_object_hold( p_aout );
387 vlc_mutex_unlock( &p_resource->lock_hold );
393 input_resource_t *input_resource_New( void )
395 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
399 vlc_mutex_init( &p_resource->lock );
400 vlc_mutex_init( &p_resource->lock_hold );
404 void input_resource_Delete( input_resource_t *p_resource )
406 DestroySout( p_resource );
407 DestroyVout( p_resource );
408 DestroyAout( p_resource );
410 vlc_mutex_destroy( &p_resource->lock_hold );
411 vlc_mutex_destroy( &p_resource->lock );
415 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
417 vlc_mutex_lock( &p_resource->lock );
419 if( p_resource->p_input && !p_input )
421 if( p_resource->p_aout )
422 vlc_object_detach( p_resource->p_aout );
424 assert( p_resource->i_vout == 0 );
425 if( p_resource->p_vout_free )
426 vlc_object_detach( p_resource->p_vout_free );
428 if( p_resource->p_sout )
429 vlc_object_detach( p_resource->p_sout );
433 p_resource->p_input = p_input;
435 vlc_mutex_unlock( &p_resource->lock );
438 input_resource_t *input_resource_Detach( input_resource_t *p_resource )
440 input_resource_t *p_ret = input_resource_New();
444 vlc_mutex_lock( &p_resource->lock );
445 assert( !p_resource->p_input );
446 p_ret->p_sout = DetachSout( p_resource );
447 p_ret->p_vout_free = DetachVout( p_resource );
448 p_ret->p_aout = DetachAout( p_resource );
449 vlc_mutex_unlock( &p_resource->lock );
454 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
455 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
457 vlc_mutex_lock( &p_resource->lock );
458 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, b_recycle );
459 vlc_mutex_unlock( &p_resource->lock );
463 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
465 return HoldVout( p_resource );
468 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
471 HoldVouts( p_resource, ppp_vout, pi_vout );
474 void input_resource_TerminateVout( input_resource_t *p_resource )
476 input_resource_RequestVout( p_resource, NULL, NULL, false );
478 bool input_resource_HasVout( input_resource_t *p_resource )
480 vlc_mutex_lock( &p_resource->lock );
481 assert( !p_resource->p_input );
482 const bool b_vout = p_resource->p_vout_free != NULL;
483 vlc_mutex_unlock( &p_resource->lock );
489 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
491 vlc_mutex_lock( &p_resource->lock );
492 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
493 vlc_mutex_unlock( &p_resource->lock );
497 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
499 return HoldAout( p_resource );
502 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
504 vlc_mutex_lock( &p_resource->lock );
505 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
506 vlc_mutex_unlock( &p_resource->lock );
510 void input_resource_TerminateSout( input_resource_t *p_resource )
512 input_resource_RequestSout( p_resource, NULL, NULL );