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
49 vlc_object_t *p_parent;
51 /* This lock is used to serialize request and protect
56 input_thread_t *p_input;
58 sout_instance_t *p_sout;
59 vout_thread_t *p_vout_free;
61 /* This lock is used to protect vout resources access (for hold)
62 * It is a special case because of embed video (possible deadlock
63 * between vout window request and vout holds in some(qt4) interface)
65 vlc_mutex_t lock_hold;
67 /* You need lock+lock_hold to write to the following variables and
68 * only lock or lock_hold to read them */
71 vout_thread_t **pp_vout;
73 aout_instance_t *p_aout;
77 static void DestroySout( input_resource_t *p_resource )
80 if( p_resource->p_sout )
81 sout_DeleteInstance( p_resource->p_sout );
83 p_resource->p_sout = NULL;
86 static sout_instance_t *RequestSout( input_resource_t *p_resource,
87 sout_instance_t *p_sout, const char *psz_sout )
90 if( !p_sout && !psz_sout )
92 if( p_resource->p_sout )
93 msg_Dbg( p_resource->p_sout, "destroying useless sout" );
94 DestroySout( p_resource );
98 assert( p_resource->p_input );
99 assert( !p_sout || ( !p_resource->p_sout && !psz_sout ) );
101 /* Check the validity of the sout */
102 if( p_resource->p_sout &&
103 strcmp( p_resource->p_sout->psz_sout, psz_sout ) )
105 msg_Dbg( p_resource->p_parent, "destroying unusable sout" );
106 DestroySout( p_resource );
111 if( p_resource->p_sout )
114 msg_Dbg( p_resource->p_parent, "reusing sout" );
115 msg_Dbg( p_resource->p_parent, "you probably want to use gather stream_out" );
119 /* Create a new one */
120 p_resource->p_sout = sout_NewInstance( p_resource->p_parent, psz_sout );
123 p_sout = p_resource->p_sout;
124 p_resource->p_sout = NULL;
130 p_resource->p_sout = p_sout;
139 static void DestroyVout( input_resource_t *p_resource )
141 assert( p_resource->i_vout == 0 );
143 if( p_resource->p_vout_free )
144 vout_CloseAndRelease( p_resource->p_vout_free );
146 p_resource->p_vout_free = NULL;
149 static void DisplayVoutTitle( input_resource_t *p_resource,
150 vout_thread_t *p_vout )
152 assert( p_resource->p_input );
154 /* TODO display the title only one time for the same input ? */
156 input_item_t *p_item = input_GetItem( p_resource->p_input );
158 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
159 if( psz_nowplaying && *psz_nowplaying )
161 vout_DisplayTitle( p_vout, psz_nowplaying );
165 char *psz_artist = input_item_GetArtist( p_item );
166 char *psz_name = input_item_GetTitle( p_item );
168 if( !psz_name || *psz_name == '\0' )
171 psz_name = input_item_GetName( p_item );
173 if( psz_artist && *psz_artist )
176 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
178 vout_DisplayTitle( p_vout, psz_string );
184 vout_DisplayTitle( p_vout, psz_name );
189 free( psz_nowplaying );
191 static vout_thread_t *RequestVout( input_resource_t *p_resource,
192 vout_thread_t *p_vout,
193 video_format_t *p_fmt, unsigned dpb_size,
196 vlc_assert_locked( &p_resource->lock );
198 if( !p_vout && !p_fmt )
200 if( p_resource->p_vout_free )
202 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
203 vout_CloseAndRelease( p_resource->p_vout_free );
204 p_resource->p_vout_free = NULL;
209 assert( p_resource->p_input );
213 if( !p_vout && p_resource->p_vout_free )
215 msg_Dbg( p_resource->p_parent, "trying to reuse free vout" );
216 p_vout = p_resource->p_vout_free;
218 p_resource->p_vout_free = NULL;
222 assert( p_vout != p_resource->p_vout_free );
224 vlc_mutex_lock( &p_resource->lock_hold );
225 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
226 vlc_mutex_unlock( &p_resource->lock_hold );
230 vout_configuration_t cfg = {
232 .input = VLC_OBJECT(p_resource->p_input),
235 .dpb_size = dpb_size,
237 p_vout = vout_Request( p_resource->p_parent, &cfg );
241 DisplayVoutTitle( p_resource, p_vout );
243 vlc_mutex_lock( &p_resource->lock_hold );
244 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
245 vlc_mutex_unlock( &p_resource->lock_hold );
253 vlc_mutex_lock( &p_resource->lock_hold );
254 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
255 const int i_vout_active = p_resource->i_vout;
256 vlc_mutex_unlock( &p_resource->lock_hold );
258 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
261 msg_Dbg( p_resource->p_parent, "detroying vout (already one saved or active)" );
262 vout_CloseAndRelease( p_vout );
266 msg_Dbg( p_resource->p_parent, "saving a free vout" );
267 vout_Flush( p_vout, 1 );
268 vout_FlushSubpictureChannel( p_vout, -1 );
270 vout_configuration_t cfg = {
277 p_resource->p_vout_free = vout_Request( p_resource->p_parent, &cfg );
282 static vout_thread_t *HoldVout( input_resource_t *p_resource )
284 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
285 vlc_mutex_lock( &p_resource->lock_hold );
287 vout_thread_t *p_vout = p_resource->i_vout > 0 ? p_resource->pp_vout[0] : NULL;
289 vlc_object_hold( p_vout );
291 vlc_mutex_unlock( &p_resource->lock_hold );
296 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
299 vout_thread_t **pp_vout;
304 vlc_mutex_lock( &p_resource->lock_hold );
306 if( p_resource->i_vout <= 0 )
309 pp_vout = malloc( p_resource->i_vout * sizeof(*pp_vout) );
314 *pi_vout = p_resource->i_vout;
316 for( int i = 0; i < p_resource->i_vout; i++ )
318 pp_vout[i] = p_resource->pp_vout[i];
319 vlc_object_hold( pp_vout[i] );
323 vlc_mutex_unlock( &p_resource->lock_hold );
327 static void DestroyAout( input_resource_t *p_resource )
329 if( p_resource->p_aout )
330 vlc_object_release( p_resource->p_aout );
331 p_resource->p_aout = NULL;
333 static aout_instance_t *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
335 vlc_assert_locked( &p_resource->lock );
336 assert( p_resource->p_input );
340 msg_Dbg( p_resource->p_parent, "releasing aout" );
341 vlc_object_release( p_aout );
346 p_aout = p_resource->p_aout;
349 msg_Dbg( p_resource->p_parent, "creating aout" );
350 p_aout = aout_New( p_resource->p_parent );
352 vlc_mutex_lock( &p_resource->lock_hold );
353 p_resource->p_aout = p_aout;
354 vlc_mutex_unlock( &p_resource->lock_hold );
358 msg_Dbg( p_resource->p_parent, "reusing aout" );
363 vlc_object_hold( p_aout );
367 static aout_instance_t *HoldAout( input_resource_t *p_resource )
369 vlc_mutex_lock( &p_resource->lock_hold );
371 aout_instance_t *p_aout = p_resource->p_aout;
373 vlc_object_hold( p_aout );
375 vlc_mutex_unlock( &p_resource->lock_hold );
379 static void TerminateAout( input_resource_t *p_resource )
381 vlc_mutex_lock( &p_resource->lock_hold );
383 aout_instance_t *p_aout = p_resource->p_aout;
384 p_resource->p_aout = NULL;
386 vlc_mutex_unlock( &p_resource->lock_hold );
389 vlc_object_release( p_aout );
392 static void Destructor( gc_object_t *p_gc )
394 input_resource_t *p_resource = vlc_priv( p_gc, input_resource_t );
396 DestroySout( p_resource );
397 DestroyVout( p_resource );
398 DestroyAout( p_resource );
400 vlc_mutex_destroy( &p_resource->lock_hold );
401 vlc_mutex_destroy( &p_resource->lock );
406 input_resource_t *input_resource_New( vlc_object_t *p_parent )
408 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
412 vlc_gc_init( p_resource, Destructor );
413 p_resource->p_parent = p_parent;
414 vlc_mutex_init( &p_resource->lock );
415 vlc_mutex_init( &p_resource->lock_hold );
419 void input_resource_Release( input_resource_t *p_resource )
421 vlc_gc_decref( p_resource );
424 input_resource_t *input_resource_Hold( input_resource_t *p_resource )
426 vlc_gc_incref( p_resource );
430 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
432 vlc_mutex_lock( &p_resource->lock );
434 if( p_resource->p_input && !p_input )
435 assert( p_resource->i_vout == 0 );
438 p_resource->p_input = p_input;
440 vlc_mutex_unlock( &p_resource->lock );
443 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
444 vout_thread_t *p_vout,
445 video_format_t *p_fmt, unsigned dpb_size,
448 vlc_mutex_lock( &p_resource->lock );
449 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, dpb_size, b_recycle );
450 vlc_mutex_unlock( &p_resource->lock );
454 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
456 return HoldVout( p_resource );
459 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
462 HoldVouts( p_resource, ppp_vout, pi_vout );
465 void input_resource_TerminateVout( input_resource_t *p_resource )
467 input_resource_RequestVout( p_resource, NULL, NULL, 0, false );
469 bool input_resource_HasVout( input_resource_t *p_resource )
471 vlc_mutex_lock( &p_resource->lock );
472 assert( !p_resource->p_input );
473 const bool b_vout = p_resource->p_vout_free != NULL;
474 vlc_mutex_unlock( &p_resource->lock );
480 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
482 vlc_mutex_lock( &p_resource->lock );
483 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
484 vlc_mutex_unlock( &p_resource->lock );
488 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
490 return HoldAout( p_resource );
494 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
496 vlc_mutex_lock( &p_resource->lock );
497 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
498 vlc_mutex_unlock( &p_resource->lock );
502 void input_resource_TerminateSout( input_resource_t *p_resource )
504 input_resource_RequestSout( p_resource, NULL, NULL );
507 void input_resource_Terminate( input_resource_t *p_resource )
509 input_resource_TerminateSout( p_resource );
511 vlc_mutex_lock( &p_resource->lock );
512 TerminateAout( p_resource );
513 vlc_mutex_unlock( &p_resource->lock );
515 input_resource_TerminateVout( p_resource );