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;
54 aout_instance_t *p_aout;
56 /* This lock is used to protect vout resources access (for hold)
57 * It is a special case because of embed video (possible deadlock
58 * between vout window request and vout holds in some(qt4) interface)
60 vlc_mutex_t lock_hold;
62 /* You need lock+lock_hold to write to the following variables and
63 * only lock or lock_hold to read them */
65 vout_thread_t **pp_vout;
69 static void DestroySout( input_resource_t *p_resource )
72 if( p_resource->p_sout )
73 sout_DeleteInstance( p_resource->p_sout );
75 p_resource->p_sout = NULL;
78 static sout_instance_t *DetachSout( input_resource_t *p_resource )
80 sout_instance_t *p_sout = p_resource->p_sout;
81 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_input, "destroying unusable sout" );
106 DestroySout( p_resource );
111 if( p_resource->p_sout )
114 msg_Dbg( p_resource->p_input, "reusing sout" );
115 msg_Dbg( p_resource->p_input, "you probably want to use gather stream_out" );
116 vlc_object_attach( p_resource->p_sout, p_resource->p_input );
120 /* Create a new one */
121 p_resource->p_sout = sout_NewInstance( p_resource->p_input, psz_sout );
124 p_sout = p_resource->p_sout;
125 p_resource->p_sout = NULL;
131 vlc_object_detach( p_sout );
132 p_resource->p_sout = p_sout;
142 static void DestroyVout( input_resource_t *p_resource )
144 assert( p_resource->i_vout == 0 );
146 if( p_resource->p_vout_free )
147 vout_CloseAndRelease( p_resource->p_vout_free );
149 p_resource->p_vout_free = NULL;
151 static vout_thread_t *DetachVout( input_resource_t *p_resource )
153 assert( p_resource->i_vout == 0 );
154 vout_thread_t *p_vout = p_resource->p_vout_free;
155 p_resource->p_vout_free = NULL;
160 static void DisplayVoutTitle( input_resource_t *p_resource,
161 vout_thread_t *p_vout )
163 assert( p_resource->p_input );
165 /* TODO display the title only one time for the same input ? */
167 input_item_t *p_item = input_GetItem( p_resource->p_input );
169 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
170 if( psz_nowplaying && *psz_nowplaying )
172 vout_DisplayTitle( p_vout, psz_nowplaying );
176 char *psz_artist = input_item_GetArtist( p_item );
177 char *psz_name = input_item_GetTitle( p_item );
179 if( !psz_name || *psz_name == '\0' )
182 psz_name = input_item_GetName( p_item );
184 if( psz_artist && *psz_artist )
187 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
189 vout_DisplayTitle( p_vout, psz_string );
195 vout_DisplayTitle( p_vout, psz_name );
200 free( psz_nowplaying );
202 static vout_thread_t *RequestVout( input_resource_t *p_resource,
203 vout_thread_t *p_vout, video_format_t *p_fmt,
206 if( !p_vout && !p_fmt )
208 if( p_resource->p_vout_free )
210 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
211 vout_CloseAndRelease( p_resource->p_vout_free );
212 p_resource->p_vout_free = NULL;
217 assert( p_resource->p_input );
221 if( !p_vout && p_resource->p_vout_free )
223 msg_Dbg( p_resource->p_input, "trying to reuse free vout" );
224 p_vout = p_resource->p_vout_free;
226 p_resource->p_vout_free = NULL;
230 assert( p_vout != p_resource->p_vout_free );
232 vlc_mutex_lock( &p_resource->lock_hold );
233 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
234 vlc_mutex_unlock( &p_resource->lock_hold );
238 p_vout = vout_Request( p_resource->p_input, p_vout, p_fmt );
242 DisplayVoutTitle( p_resource, p_vout );
244 vlc_mutex_lock( &p_resource->lock_hold );
245 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
246 vlc_mutex_unlock( &p_resource->lock_hold );
254 vlc_mutex_lock( &p_resource->lock_hold );
255 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
256 const int i_vout_active = p_resource->i_vout;
257 vlc_mutex_unlock( &p_resource->lock_hold );
259 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
262 msg_Dbg( p_resource->p_input, "detroying vout (already one saved or active)" );
263 vout_CloseAndRelease( p_vout );
267 msg_Dbg( p_resource->p_input, "saving a free vout" );
268 vout_Flush( p_vout, 1 );
269 spu_Control( vout_GetSpu( p_vout ), SPU_CHANNEL_CLEAR, -1 );
271 p_resource->p_vout_free = p_vout;
276 static vout_thread_t *HoldVout( input_resource_t *p_resource )
278 if( p_resource->i_vout <= 0 )
281 /* TODO FIXME: p_resource->pp_vout order is NOT stable */
282 vlc_mutex_lock( &p_resource->lock_hold );
284 vout_thread_t *p_vout = p_resource->pp_vout[0];
286 vlc_object_hold( p_vout );
288 vlc_mutex_unlock( &p_resource->lock_hold );
292 static void HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout, int *pi_vout )
294 vout_thread_t **pp_vout;
299 vlc_mutex_lock( &p_resource->lock_hold );
301 if( p_resource->i_vout <= 0 )
304 pp_vout = calloc( p_resource->i_vout, sizeof(*pp_vout) );
309 *pi_vout = p_resource->i_vout;
311 for( int i = 0; i < p_resource->i_vout; i++ )
313 pp_vout[i] = p_resource->pp_vout[i];
314 vlc_object_hold( pp_vout[i] );
318 vlc_mutex_unlock( &p_resource->lock_hold );
322 static void DestroyAout( input_resource_t *p_resource )
324 if( p_resource->p_aout )
325 vlc_object_release( p_resource->p_aout );
326 p_resource->p_aout = NULL;
328 static aout_instance_t *DetachAout( input_resource_t *p_resource )
330 aout_instance_t *p_aout = p_resource->p_aout;
331 p_resource->p_aout = NULL;
336 static aout_instance_t *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
338 assert( p_resource->p_input );
342 msg_Dbg( p_resource->p_input, "releasing aout" );
343 vlc_object_release( p_aout );
348 if( !p_resource->p_aout )
350 msg_Dbg( p_resource->p_input, "creating aout" );
351 p_resource->p_aout = aout_New( p_resource->p_input );
355 msg_Dbg( p_resource->p_input, "reusing aout" );
358 if( !p_resource->p_aout )
361 vlc_object_detach( p_resource->p_aout );
362 vlc_object_attach( p_resource->p_aout, p_resource->p_input );
363 vlc_object_hold( p_resource->p_aout );
364 return p_resource->p_aout;
367 static aout_instance_t *HoldAout( input_resource_t *p_resource )
369 if( !p_resource->p_aout )
372 aout_instance_t *p_aout = p_resource->p_aout;
374 vlc_object_hold( p_aout );
380 input_resource_t *input_resource_New( void )
382 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
386 vlc_mutex_init( &p_resource->lock );
387 vlc_mutex_init( &p_resource->lock_hold );
391 void input_resource_Delete( input_resource_t *p_resource )
393 DestroySout( p_resource );
394 DestroyVout( p_resource );
395 DestroyAout( p_resource );
397 vlc_mutex_destroy( &p_resource->lock_hold );
398 vlc_mutex_destroy( &p_resource->lock );
402 void input_resource_SetInput( input_resource_t *p_resource, input_thread_t *p_input )
404 vlc_mutex_lock( &p_resource->lock );
406 if( p_resource->p_input && !p_input )
408 if( p_resource->p_aout )
409 vlc_object_detach( p_resource->p_aout );
411 assert( p_resource->i_vout == 0 );
412 if( p_resource->p_vout_free )
413 vlc_object_detach( p_resource->p_vout_free );
415 if( p_resource->p_sout )
416 vlc_object_detach( p_resource->p_sout );
420 p_resource->p_input = p_input;
422 vlc_mutex_unlock( &p_resource->lock );
425 input_resource_t *input_resource_Detach( input_resource_t *p_resource )
427 input_resource_t *p_ret = input_resource_New();
431 vlc_mutex_lock( &p_resource->lock );
432 assert( !p_resource->p_input );
433 p_ret->p_sout = DetachSout( p_resource );
434 p_ret->p_vout_free = DetachVout( p_resource );
435 p_ret->p_aout = DetachAout( p_resource );
436 vlc_mutex_unlock( &p_resource->lock );
441 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
442 vout_thread_t *p_vout, video_format_t *p_fmt, bool b_recycle )
444 vlc_mutex_lock( &p_resource->lock );
445 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, b_recycle );
446 vlc_mutex_unlock( &p_resource->lock );
450 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
452 return HoldVout( p_resource );
454 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout, int *pi_vout )
456 HoldVouts( p_resource, ppp_vout, pi_vout );
458 void input_resource_TerminateVout( input_resource_t *p_resource )
460 input_resource_RequestVout( p_resource, NULL, NULL, false );
462 bool input_resource_HasVout( input_resource_t *p_resource )
464 vlc_mutex_lock( &p_resource->lock );
465 assert( !p_resource->p_input );
466 const bool b_vout = p_resource->p_vout_free != NULL;
467 vlc_mutex_unlock( &p_resource->lock );
473 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
475 vlc_mutex_lock( &p_resource->lock );
476 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
477 vlc_mutex_unlock( &p_resource->lock );
481 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
483 vlc_mutex_lock( &p_resource->lock );
484 aout_instance_t *p_ret = HoldAout( p_resource );
485 vlc_mutex_unlock( &p_resource->lock );
490 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
492 vlc_mutex_lock( &p_resource->lock );
493 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
494 vlc_mutex_unlock( &p_resource->lock );
498 void input_resource_TerminateSout( input_resource_t *p_resource )
500 input_resource_RequestSout( p_resource, NULL, NULL );