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 it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_atomic.h>
39 #include "../libvlc.h"
40 #include "../stream_output/stream_output.h"
41 #include "../audio_output/aout_internal.h"
42 #include "../video_output/vout_control.h"
43 #include "input_interface.h"
46 struct input_resource_t
50 vlc_object_t *p_parent;
52 /* This lock is used to serialize request and protect
57 input_thread_t *p_input;
59 sout_instance_t *p_sout;
60 vout_thread_t *p_vout_free;
62 /* This lock is used to protect vout resources access (for hold)
63 * It is a special case because of embed video (possible deadlock
64 * between vout window request and vout holds in some(qt4) interface)
66 vlc_mutex_t lock_hold;
68 /* You need lock+lock_hold to write to the following variables and
69 * only lock or lock_hold to read them */
71 vout_thread_t **pp_vout;
74 /* TODO? track more than one audio output (like video outputs) */
76 audio_output_t *p_aout;
80 static void DestroySout( input_resource_t *p_resource )
83 if( p_resource->p_sout )
84 sout_DeleteInstance( p_resource->p_sout );
86 p_resource->p_sout = NULL;
89 static sout_instance_t *RequestSout( input_resource_t *p_resource,
90 sout_instance_t *p_sout, const char *psz_sout )
93 if( !p_sout && !psz_sout )
95 if( p_resource->p_sout )
96 msg_Dbg( p_resource->p_sout, "destroying useless sout" );
97 DestroySout( p_resource );
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_parent, "destroying unusable sout" );
108 DestroySout( p_resource );
113 if( p_resource->p_sout )
116 msg_Dbg( p_resource->p_parent, "reusing sout" );
117 msg_Dbg( p_resource->p_parent, "you probably want to use gather stream_out" );
121 /* Create a new one */
122 p_resource->p_sout = sout_NewInstance( p_resource->p_parent, psz_sout );
125 p_sout = p_resource->p_sout;
126 p_resource->p_sout = NULL;
132 p_resource->p_sout = p_sout;
141 static void DestroyVout( input_resource_t *p_resource )
143 assert( p_resource->i_vout == 0 );
145 if( p_resource->p_vout_free )
146 vout_CloseAndRelease( p_resource->p_vout_free );
148 p_resource->p_vout_free = NULL;
151 static void DisplayVoutTitle( input_resource_t *p_resource,
152 vout_thread_t *p_vout )
154 if( p_resource->p_input == NULL )
157 /* TODO display the title only one time for the same input ? */
159 input_item_t *p_item = input_GetItem( p_resource->p_input );
161 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
162 if( psz_nowplaying && *psz_nowplaying )
164 vout_DisplayTitle( p_vout, psz_nowplaying );
168 char *psz_artist = input_item_GetArtist( p_item );
169 char *psz_name = input_item_GetTitle( p_item );
171 if( !psz_name || *psz_name == '\0' )
174 psz_name = input_item_GetName( p_item );
176 if( psz_artist && *psz_artist )
179 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
181 vout_DisplayTitle( p_vout, psz_string );
187 vout_DisplayTitle( p_vout, psz_name );
192 free( psz_nowplaying );
194 static vout_thread_t *RequestVout( input_resource_t *p_resource,
195 vout_thread_t *p_vout,
196 video_format_t *p_fmt, unsigned dpb_size,
199 vlc_assert_locked( &p_resource->lock );
201 if( !p_vout && !p_fmt )
203 if( p_resource->p_vout_free )
205 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
206 vout_CloseAndRelease( p_resource->p_vout_free );
207 p_resource->p_vout_free = NULL;
215 if( !p_vout && p_resource->p_vout_free )
217 msg_Dbg( p_resource->p_parent, "trying to reuse free vout" );
218 p_vout = p_resource->p_vout_free;
220 p_resource->p_vout_free = NULL;
224 assert( p_vout != p_resource->p_vout_free );
226 vlc_mutex_lock( &p_resource->lock_hold );
227 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
228 vlc_mutex_unlock( &p_resource->lock_hold );
232 vout_configuration_t cfg = {
234 .input = VLC_OBJECT(p_resource->p_input),
237 .dpb_size = dpb_size,
239 p_vout = vout_Request( p_resource->p_parent, &cfg );
243 DisplayVoutTitle( p_resource, p_vout );
245 vlc_mutex_lock( &p_resource->lock_hold );
246 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
247 vlc_mutex_unlock( &p_resource->lock_hold );
255 vlc_mutex_lock( &p_resource->lock_hold );
256 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
257 const int i_vout_active = p_resource->i_vout;
258 vlc_mutex_unlock( &p_resource->lock_hold );
260 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
263 msg_Dbg( p_resource->p_parent, "detroying vout (already one saved or active)" );
264 vout_CloseAndRelease( p_vout );
268 msg_Dbg( p_resource->p_parent, "saving a free vout" );
269 vout_Flush( p_vout, 1 );
270 vout_FlushSubpictureChannel( p_vout, -1 );
272 vout_configuration_t cfg = {
279 p_resource->p_vout_free = vout_Request( p_resource->p_parent, &cfg );
284 static vout_thread_t *HoldVout( input_resource_t *p_resource )
286 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
287 vlc_mutex_lock( &p_resource->lock_hold );
289 vout_thread_t *p_vout = p_resource->i_vout > 0 ? p_resource->pp_vout[0] : NULL;
291 vlc_object_hold( p_vout );
293 vlc_mutex_unlock( &p_resource->lock_hold );
298 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
301 vout_thread_t **pp_vout;
306 vlc_mutex_lock( &p_resource->lock_hold );
308 if( p_resource->i_vout <= 0 )
311 pp_vout = malloc( p_resource->i_vout * sizeof(*pp_vout) );
316 *pi_vout = p_resource->i_vout;
318 for( int i = 0; i < p_resource->i_vout; i++ )
320 pp_vout[i] = p_resource->pp_vout[i];
321 vlc_object_hold( pp_vout[i] );
325 vlc_mutex_unlock( &p_resource->lock_hold );
329 audio_output_t *input_resource_GetAout( input_resource_t *p_resource )
331 audio_output_t *p_aout;
333 vlc_mutex_lock( &p_resource->lock );
334 if( p_resource->b_aout_busy )
336 vlc_mutex_unlock( &p_resource->lock );
337 msg_Dbg( p_resource->p_parent, "creating extra audio output" );
338 return aout_New( p_resource->p_parent );
341 p_aout = p_resource->p_aout;
344 msg_Dbg( p_resource->p_parent, "creating audio output" );
345 p_aout = aout_New( p_resource->p_parent );
348 msg_Dbg( p_resource->p_parent, "reusing audio output" );
352 vlc_mutex_lock( &p_resource->lock_hold );
353 assert( p_resource->p_aout == NULL );
354 p_resource->p_aout = p_aout;
355 vlc_mutex_unlock( &p_resource->lock_hold );
357 p_resource->b_aout_busy = true;
358 vlc_object_hold( p_aout );
360 vlc_mutex_unlock( &p_resource->lock );
364 void input_resource_PutAout( input_resource_t *p_resource,
365 audio_output_t *p_aout )
367 assert( p_aout != NULL );
369 vlc_mutex_lock( &p_resource->lock );
370 if( p_aout == p_resource->p_aout )
372 assert( p_resource->b_aout_busy );
373 p_resource->b_aout_busy = false;
374 msg_Dbg( p_resource->p_parent, "keeping audio output" );
375 vlc_object_release( p_aout );
379 msg_Dbg( p_resource->p_parent, "destroying extra audio output" );
380 vlc_mutex_unlock( &p_resource->lock );
383 aout_Destroy( p_aout );
386 audio_output_t *input_resource_HoldAout( input_resource_t *p_resource )
388 audio_output_t *p_aout;
390 vlc_mutex_lock( &p_resource->lock_hold );
391 p_aout = p_resource->p_aout;
393 vlc_object_hold( p_aout );
394 vlc_mutex_unlock( &p_resource->lock_hold );
399 static void input_resource_TerminateAout( input_resource_t *p_resource )
401 audio_output_t *p_aout;
403 vlc_mutex_lock( &p_resource->lock );
404 vlc_mutex_lock( &p_resource->lock_hold );
405 p_aout = p_resource->p_aout;
406 p_resource->p_aout = NULL;
407 vlc_mutex_unlock( &p_resource->lock_hold );
408 p_resource->b_aout_busy = false;
409 vlc_mutex_unlock( &p_resource->lock );
412 aout_Destroy( p_aout );
416 input_resource_t *input_resource_New( vlc_object_t *p_parent )
418 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
422 atomic_init( &p_resource->refs, 1 );
423 p_resource->p_parent = p_parent;
424 vlc_mutex_init( &p_resource->lock );
425 vlc_mutex_init( &p_resource->lock_hold );
429 void input_resource_Release( input_resource_t *p_resource )
431 if( atomic_fetch_sub( &p_resource->refs, 1 ) != 1 )
434 DestroySout( p_resource );
435 DestroyVout( p_resource );
436 if( p_resource->p_aout != NULL )
437 aout_Destroy( p_resource->p_aout );
439 vlc_mutex_destroy( &p_resource->lock_hold );
440 vlc_mutex_destroy( &p_resource->lock );
444 input_resource_t *input_resource_Hold( input_resource_t *p_resource )
446 atomic_fetch_add( &p_resource->refs, 1 );
450 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
452 vlc_mutex_lock( &p_resource->lock );
454 if( p_resource->p_input && !p_input )
455 assert( p_resource->i_vout == 0 );
458 p_resource->p_input = p_input;
460 vlc_mutex_unlock( &p_resource->lock );
463 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
464 vout_thread_t *p_vout,
465 video_format_t *p_fmt, unsigned dpb_size,
468 vlc_mutex_lock( &p_resource->lock );
469 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, dpb_size, b_recycle );
470 vlc_mutex_unlock( &p_resource->lock );
474 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
476 return HoldVout( p_resource );
479 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
482 HoldVouts( p_resource, ppp_vout, pi_vout );
485 void input_resource_TerminateVout( input_resource_t *p_resource )
487 input_resource_RequestVout( p_resource, NULL, NULL, 0, false );
489 bool input_resource_HasVout( input_resource_t *p_resource )
491 vlc_mutex_lock( &p_resource->lock );
492 assert( !p_resource->p_input );
493 const bool b_vout = p_resource->p_vout_free != NULL;
494 vlc_mutex_unlock( &p_resource->lock );
500 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
502 vlc_mutex_lock( &p_resource->lock );
503 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
504 vlc_mutex_unlock( &p_resource->lock );
508 void input_resource_TerminateSout( input_resource_t *p_resource )
510 input_resource_RequestSout( p_resource, NULL, NULL );
513 void input_resource_Terminate( input_resource_t *p_resource )
515 input_resource_TerminateSout( p_resource );
516 input_resource_TerminateAout( p_resource );
517 input_resource_TerminateVout( p_resource );