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 vlc_object_t *p_parent;
49 /* This lock is used to serialize request and protect
54 input_thread_t *p_input;
56 sout_instance_t *p_sout;
57 vout_thread_t *p_vout_free;
59 /* This lock is used to protect vout resources access (for hold)
60 * It is a special case because of embed video (possible deadlock
61 * between vout window request and vout holds in some(qt4) interface)
63 vlc_mutex_t lock_hold;
65 /* You need lock+lock_hold to write to the following variables and
66 * only lock or lock_hold to read them */
69 vout_thread_t **pp_vout;
71 aout_instance_t *p_aout;
75 static void DestroySout( input_resource_t *p_resource )
78 if( p_resource->p_sout )
79 sout_DeleteInstance( p_resource->p_sout );
81 p_resource->p_sout = NULL;
84 static sout_instance_t *RequestSout( input_resource_t *p_resource,
85 sout_instance_t *p_sout, const char *psz_sout )
88 if( !p_sout && !psz_sout )
90 if( p_resource->p_sout )
91 msg_Dbg( p_resource->p_sout, "destroying useless sout" );
92 DestroySout( p_resource );
96 assert( p_resource->p_input );
97 assert( !p_sout || ( !p_resource->p_sout && !psz_sout ) );
99 /* Check the validity of the sout */
100 if( p_resource->p_sout &&
101 strcmp( p_resource->p_sout->psz_sout, psz_sout ) )
103 msg_Dbg( p_resource->p_parent, "destroying unusable sout" );
104 DestroySout( p_resource );
109 if( p_resource->p_sout )
112 msg_Dbg( p_resource->p_parent, "reusing sout" );
113 msg_Dbg( p_resource->p_parent, "you probably want to use gather stream_out" );
117 /* Create a new one */
118 p_resource->p_sout = sout_NewInstance( p_resource->p_parent, psz_sout );
121 p_sout = p_resource->p_sout;
122 p_resource->p_sout = NULL;
128 p_resource->p_sout = p_sout;
137 static void DestroyVout( input_resource_t *p_resource )
139 assert( p_resource->i_vout == 0 );
141 if( p_resource->p_vout_free )
142 vout_CloseAndRelease( p_resource->p_vout_free );
144 p_resource->p_vout_free = NULL;
147 static void DisplayVoutTitle( input_resource_t *p_resource,
148 vout_thread_t *p_vout )
150 assert( p_resource->p_input );
152 /* TODO display the title only one time for the same input ? */
154 input_item_t *p_item = input_GetItem( p_resource->p_input );
156 char *psz_nowplaying = input_item_GetNowPlaying( p_item );
157 if( psz_nowplaying && *psz_nowplaying )
159 vout_DisplayTitle( p_vout, psz_nowplaying );
163 char *psz_artist = input_item_GetArtist( p_item );
164 char *psz_name = input_item_GetTitle( p_item );
166 if( !psz_name || *psz_name == '\0' )
169 psz_name = input_item_GetName( p_item );
171 if( psz_artist && *psz_artist )
174 if( asprintf( &psz_string, "%s - %s", psz_name, psz_artist ) != -1 )
176 vout_DisplayTitle( p_vout, psz_string );
182 vout_DisplayTitle( p_vout, psz_name );
187 free( psz_nowplaying );
189 static vout_thread_t *RequestVout( input_resource_t *p_resource,
190 vout_thread_t *p_vout,
191 video_format_t *p_fmt, unsigned dpb_size,
194 vlc_assert_locked( &p_resource->lock );
196 if( !p_vout && !p_fmt )
198 if( p_resource->p_vout_free )
200 msg_Dbg( p_resource->p_vout_free, "destroying useless vout" );
201 vout_CloseAndRelease( p_resource->p_vout_free );
202 p_resource->p_vout_free = NULL;
207 assert( p_resource->p_input );
211 if( !p_vout && p_resource->p_vout_free )
213 msg_Dbg( p_resource->p_parent, "trying to reuse free vout" );
214 p_vout = p_resource->p_vout_free;
216 p_resource->p_vout_free = NULL;
220 assert( p_vout != p_resource->p_vout_free );
222 vlc_mutex_lock( &p_resource->lock_hold );
223 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
224 vlc_mutex_unlock( &p_resource->lock_hold );
228 vout_configuration_t cfg = {
230 .input = VLC_OBJECT(p_resource->p_input),
233 .dpb_size = dpb_size,
235 p_vout = vout_Request( p_resource->p_parent, &cfg );
239 DisplayVoutTitle( p_resource, p_vout );
241 vlc_mutex_lock( &p_resource->lock_hold );
242 TAB_APPEND( p_resource->i_vout, p_resource->pp_vout, p_vout );
243 vlc_mutex_unlock( &p_resource->lock_hold );
251 vlc_mutex_lock( &p_resource->lock_hold );
252 TAB_REMOVE( p_resource->i_vout, p_resource->pp_vout, p_vout );
253 const int i_vout_active = p_resource->i_vout;
254 vlc_mutex_unlock( &p_resource->lock_hold );
256 if( p_resource->p_vout_free || i_vout_active > 0 || !b_recycle )
259 msg_Dbg( p_resource->p_parent, "detroying vout (already one saved or active)" );
260 vout_CloseAndRelease( p_vout );
264 msg_Dbg( p_resource->p_parent, "saving a free vout" );
265 vout_Flush( p_vout, 1 );
266 vout_FlushSubpictureChannel( p_vout, -1 );
268 vout_configuration_t cfg = {
275 p_resource->p_vout_free = vout_Request( p_resource->p_parent, &cfg );
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 *RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
333 vlc_assert_locked( &p_resource->lock );
334 assert( p_resource->p_input );
338 msg_Dbg( p_resource->p_parent, "releasing aout" );
339 vlc_object_release( p_aout );
344 p_aout = p_resource->p_aout;
347 msg_Dbg( p_resource->p_parent, "creating aout" );
348 p_aout = aout_New( p_resource->p_parent );
350 vlc_mutex_lock( &p_resource->lock_hold );
351 p_resource->p_aout = p_aout;
352 vlc_mutex_unlock( &p_resource->lock_hold );
356 msg_Dbg( p_resource->p_parent, "reusing aout" );
361 vlc_object_hold( p_aout );
365 static aout_instance_t *HoldAout( input_resource_t *p_resource )
367 vlc_mutex_lock( &p_resource->lock_hold );
369 aout_instance_t *p_aout = p_resource->p_aout;
371 vlc_object_hold( p_aout );
373 vlc_mutex_unlock( &p_resource->lock_hold );
377 static void TerminateAout( input_resource_t *p_resource )
379 vlc_mutex_lock( &p_resource->lock_hold );
381 aout_instance_t *p_aout = p_resource->p_aout;
382 p_resource->p_aout = NULL;
384 vlc_mutex_unlock( &p_resource->lock_hold );
387 vlc_object_release( p_aout );
392 input_resource_t *input_resource_New( vlc_object_t *p_parent )
394 input_resource_t *p_resource = calloc( 1, sizeof(*p_resource) );
398 p_resource->p_parent = p_parent;
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 )
420 assert( p_resource->i_vout == 0 );
423 p_resource->p_input = p_input;
425 vlc_mutex_unlock( &p_resource->lock );
428 vout_thread_t *input_resource_RequestVout( input_resource_t *p_resource,
429 vout_thread_t *p_vout,
430 video_format_t *p_fmt, unsigned dpb_size,
433 vlc_mutex_lock( &p_resource->lock );
434 vout_thread_t *p_ret = RequestVout( p_resource, p_vout, p_fmt, dpb_size, b_recycle );
435 vlc_mutex_unlock( &p_resource->lock );
439 vout_thread_t *input_resource_HoldVout( input_resource_t *p_resource )
441 return HoldVout( p_resource );
444 void input_resource_HoldVouts( input_resource_t *p_resource, vout_thread_t ***ppp_vout,
447 HoldVouts( p_resource, ppp_vout, pi_vout );
450 void input_resource_TerminateVout( input_resource_t *p_resource )
452 input_resource_RequestVout( p_resource, NULL, NULL, 0, false );
454 bool input_resource_HasVout( input_resource_t *p_resource )
456 vlc_mutex_lock( &p_resource->lock );
457 assert( !p_resource->p_input );
458 const bool b_vout = p_resource->p_vout_free != NULL;
459 vlc_mutex_unlock( &p_resource->lock );
465 aout_instance_t *input_resource_RequestAout( input_resource_t *p_resource, aout_instance_t *p_aout )
467 vlc_mutex_lock( &p_resource->lock );
468 aout_instance_t *p_ret = RequestAout( p_resource, p_aout );
469 vlc_mutex_unlock( &p_resource->lock );
473 aout_instance_t *input_resource_HoldAout( input_resource_t *p_resource )
475 return HoldAout( p_resource );
479 sout_instance_t *input_resource_RequestSout( input_resource_t *p_resource, sout_instance_t *p_sout, const char *psz_sout )
481 vlc_mutex_lock( &p_resource->lock );
482 sout_instance_t *p_ret = RequestSout( p_resource, p_sout, psz_sout );
483 vlc_mutex_unlock( &p_resource->lock );
487 void input_resource_TerminateSout( input_resource_t *p_resource )
489 input_resource_RequestSout( p_resource, NULL, NULL );
492 void input_resource_Terminate( input_resource_t *p_resource )
494 input_resource_TerminateSout( p_resource );
496 vlc_mutex_lock( &p_resource->lock );
497 TerminateAout( p_resource );
498 vlc_mutex_unlock( &p_resource->lock );
500 input_resource_TerminateVout( p_resource );