audio off
[melted] / src / modules / sdl / consumer_sdl.c
1 /*
2 * consumer_sdl.c -- A Simple DirectMedia Layer consumer
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21 #include "consumer_sdl.h"
22 #include <framework/mlt_frame.h>
23 #include <framework/mlt_deque.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <pthread.h>
28 #include <SDL/SDL.h>
29 #include <SDL/SDL_syswm.h>
30 #include <sys/time.h>
31
32 /** This classes definition.
33 */
34
35 typedef struct consumer_sdl_s *consumer_sdl;
36
37 struct consumer_sdl_s
38 {
39 struct mlt_consumer_s parent;
40 mlt_properties properties;
41 mlt_deque queue;
42 pthread_t thread;
43 int running;
44 uint8_t audio_buffer[ 4096 * 10 ];
45 int audio_avail;
46 pthread_mutex_t audio_mutex;
47 pthread_cond_t audio_cond;
48 pthread_mutex_t video_mutex;
49 pthread_cond_t video_cond;
50 int window_width;
51 int window_height;
52 float aspect_ratio;
53 float display_aspect;
54 double last_frame_aspect;
55 int width;
56 int height;
57 int playing;
58 int sdl_flags;
59 SDL_Surface *sdl_screen;
60 SDL_Overlay *sdl_overlay;
61 SDL_Rect rect;
62 uint8_t *buffer;
63 };
64
65 /** Forward references to static functions.
66 */
67
68 static int consumer_start( mlt_consumer parent );
69 static int consumer_stop( mlt_consumer parent );
70 static int consumer_is_stopped( mlt_consumer parent );
71 static void consumer_close( mlt_consumer parent );
72 static void *consumer_thread( void * );
73 static int consumer_get_dimensions( int *width, int *height );
74
75 /** This is what will be called by the factory - anything can be passed in
76 via the argument, but keep it simple.
77 */
78
79 mlt_consumer consumer_sdl_init( char *arg )
80 {
81 // Create the consumer object
82 consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
83
84 // If no malloc'd and consumer init ok
85 if ( this != NULL && mlt_consumer_init( &this->parent, this ) == 0 )
86 {
87 // Create the queue
88 this->queue = mlt_deque_init( );
89
90 // Get the parent consumer object
91 mlt_consumer parent = &this->parent;
92
93 // We have stuff to clean up, so override the close method
94 parent->close = consumer_close;
95
96 // get a handle on properties
97 mlt_service service = mlt_consumer_service( parent );
98 this->properties = mlt_service_properties( service );
99
100 // Set the default volume
101 mlt_properties_set_double( this->properties, "volume", 1.0 );
102
103 // This is the initialisation of the consumer
104 pthread_mutex_init( &this->audio_mutex, NULL );
105 pthread_cond_init( &this->audio_cond, NULL);
106 pthread_mutex_init( &this->video_mutex, NULL );
107 pthread_cond_init( &this->video_cond, NULL);
108
109 // Default scaler (for now we'll use nearest)
110 mlt_properties_set( this->properties, "rescale", "nearest" );
111
112 // Default buffer for low latency
113 mlt_properties_set_int( this->properties, "buffer", 1 );
114
115 // Default progressive true
116 mlt_properties_set_int( this->properties, "progressive", 0 );
117
118 // Default audio buffer
119 mlt_properties_set_int( this->properties, "audio_buffer", 1024 );
120
121 // Get sample aspect ratio
122 this->aspect_ratio = mlt_properties_get_double( this->properties, "aspect_ratio" );
123
124 // Default display aspect ratio
125 this->display_aspect = 4.0 / 3.0;
126
127 // process actual param
128 if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
129 {
130 this->width = mlt_properties_get_int( this->properties, "width" );
131 this->height = mlt_properties_get_int( this->properties, "height" );
132
133 // Default window size
134 this->window_width = ( float )this->height * this->display_aspect + 0.5;
135 this->window_height = this->height;
136 }
137 else
138 {
139 if ( (int)( ( float )this->width / this->height * 1000 ) !=
140 (int)( this->display_aspect * 1000 ) )
141 {
142 // Override these
143 this->display_aspect = ( float )this->width / this->height;
144 this->aspect_ratio = 1.0;
145 mlt_properties_set_double( this->properties, "aspect_ratio", this->aspect_ratio );
146 }
147
148 // Set window size
149 this->window_width = this->width;
150 this->window_height = this->height;
151 }
152
153 // Set the sdl flags
154 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
155
156 // Allow thread to be started/stopped
157 parent->start = consumer_start;
158 parent->stop = consumer_stop;
159 parent->is_stopped = consumer_is_stopped;
160
161 // Return the consumer produced
162 return parent;
163 }
164
165 // malloc or consumer init failed
166 free( this );
167
168 // Indicate failure
169 return NULL;
170 }
171
172 int consumer_start( mlt_consumer parent )
173 {
174 consumer_sdl this = parent->child;
175
176 if ( !this->running )
177 {
178 pthread_attr_t thread_attributes;
179
180 this->running = 1;
181
182 // Allow the user to force resizing to window size
183 if ( mlt_properties_get_int( this->properties, "resize" ) )
184 {
185 mlt_properties_set_int( this->properties, "width", this->width );
186 mlt_properties_set_int( this->properties, "height", this->height );
187 }
188
189 // Inherit the scheduling priority
190 pthread_attr_init( &thread_attributes );
191 pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
192
193 pthread_create( &this->thread, &thread_attributes, consumer_thread, this );
194 }
195
196 return 0;
197 }
198
199 int consumer_stop( mlt_consumer parent )
200 {
201 // Get the actual object
202 consumer_sdl this = parent->child;
203
204 if ( this->running )
205 {
206 // Kill the thread and clean up
207 this->running = 0;
208
209 pthread_mutex_lock( &this->audio_mutex );
210 pthread_cond_broadcast( &this->audio_cond );
211 pthread_mutex_unlock( &this->audio_mutex );
212
213 pthread_join( this->thread, NULL );
214 }
215
216 return 0;
217 }
218
219 int consumer_is_stopped( mlt_consumer parent )
220 {
221 consumer_sdl this = parent->child;
222 return !this->running;
223 }
224
225 static int sdl_lock_display( )
226 {
227 SDL_Surface *screen = SDL_GetVideoSurface( );
228 return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
229 }
230
231 static void sdl_unlock_display( )
232 {
233 SDL_Surface *screen = SDL_GetVideoSurface( );
234 if ( screen != NULL && SDL_MUSTLOCK( screen ) )
235 SDL_UnlockSurface( screen );
236 }
237
238 static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
239 {
240 consumer_sdl this = udata;
241
242 // Get the volume
243 float volume = mlt_properties_get_double( this->properties, "volume" );
244
245 pthread_mutex_lock( &this->audio_mutex );
246
247 // Block until audio received
248 while ( this->running && len > this->audio_avail )
249 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
250
251 if ( this->audio_avail >= len )
252 {
253 // Place in the audio buffer
254 memcpy( stream, this->audio_buffer, len );
255
256 // Remove len from the audio available
257 this->audio_avail -= len;
258
259 // Remove the samples
260 memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
261 }
262 else
263 {
264 // Just to be safe, wipe the stream first
265 memset( stream, 0, len );
266
267 // Copy what we have into the stream
268 memcpy( stream, this->audio_buffer, this->audio_avail );
269
270 // Mix the audio
271 SDL_MixAudio( stream, stream, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
272
273 // No audio left
274 this->audio_avail = 0;
275 }
276
277 // We're definitely playing now
278 this->playing = 1;
279
280 pthread_cond_broadcast( &this->audio_cond );
281 pthread_mutex_unlock( &this->audio_mutex );
282 }
283
284 static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
285 {
286 // Get the properties of this consumer
287 mlt_properties properties = this->properties;
288 mlt_audio_format afmt = mlt_audio_pcm;
289
290 // Set the preferred params of the test card signal
291 int channels = mlt_properties_get_int( properties, "channels" );
292 int frequency = mlt_properties_get_int( properties, "frequency" );
293 static int counter = 0;
294
295 int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
296
297 int16_t *pcm;
298 int bytes;
299
300 mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
301 *duration = ( ( samples * 1000 ) / frequency );
302
303 if ( mlt_properties_get_int( properties, "audio_off" ) )
304 {
305 this->playing = 1;
306 init_audio = 1;
307 return init_audio;
308 }
309
310 if ( init_audio == 1 )
311 {
312 SDL_AudioSpec request;
313 SDL_AudioSpec got;
314
315 int audio_buffer = mlt_properties_get_int( properties, "audio_buffer" );
316
317 // specify audio format
318 memset( &request, 0, sizeof( SDL_AudioSpec ) );
319 this->playing = 0;
320 request.freq = frequency;
321 request.format = AUDIO_S16;
322 request.channels = channels;
323 request.samples = audio_buffer;
324 request.callback = sdl_fill_audio;
325 request.userdata = (void *)this;
326 if ( SDL_OpenAudio( &request, &got ) != 0 )
327 {
328 fprintf( stderr, "SDL failed to open audio: %s\n", SDL_GetError() );
329 init_audio = 2;
330 }
331 else if ( got.size != 0 )
332 {
333 SDL_PauseAudio( 0 );
334 init_audio = 0;
335 }
336 }
337
338 if ( init_audio == 0 )
339 {
340 mlt_properties properties = mlt_frame_properties( frame );
341 bytes = ( samples * channels * 2 );
342 pthread_mutex_lock( &this->audio_mutex );
343 while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
344 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
345 if ( this->running )
346 {
347 if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
348 memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
349 else
350 memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
351 this->audio_avail += bytes;
352 }
353 pthread_cond_broadcast( &this->audio_cond );
354 pthread_mutex_unlock( &this->audio_mutex );
355 }
356 else
357 {
358 this->playing = 1;
359 }
360
361 return init_audio;
362 }
363
364 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
365 {
366 // Get the properties of this consumer
367 mlt_properties properties = this->properties;
368
369 mlt_image_format vfmt = mlt_image_yuv422;
370 int width = this->width, height = this->height;
371 uint8_t *image;
372 int changed = 0;
373
374 if ( mlt_properties_get_int( properties, "video_off" ) == 0 )
375 {
376 // Get the image, width and height
377 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
378
379 // Handle events
380 if ( this->sdl_screen != NULL )
381 {
382 SDL_Event event;
383
384 changed = consumer_get_dimensions( &this->window_width, &this->window_height );
385
386 while ( SDL_PollEvent( &event ) )
387 {
388 switch( event.type )
389 {
390 case SDL_VIDEORESIZE:
391 this->window_width = event.resize.w;
392 this->window_height = event.resize.h;
393 changed = 1;
394 break;
395 case SDL_QUIT:
396 this->running = 0;
397 break;
398 case SDL_KEYDOWN:
399 {
400 mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
401 char keyboard[ 2 ] = " ";
402 void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
403 if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
404 {
405 keyboard[ 0 ] = ( char )event.key.keysym.unicode;
406 callback( producer, keyboard );
407 }
408 }
409 break;
410 }
411 }
412 }
413
414 if ( width != this->width || height != this->height || this->last_frame_aspect != mlt_frame_get_aspect_ratio( frame ) )
415 {
416 this->width = width;
417 this->height = height;
418 this->last_frame_aspect = mlt_frame_get_aspect_ratio( frame );
419 changed = 1;
420 }
421
422 if ( this->sdl_screen == NULL || changed )
423 {
424 // Determine frame's display aspect ratio
425 float frame_aspect = mlt_frame_get_aspect_ratio( frame ) * this->width / this->height;
426
427 // Determine window's new display aspect ratio
428 float this_aspect = ( float )this->window_width / this->window_height;
429
430 // If using hardware scaler
431 if ( mlt_properties_get( properties, "rescale" ) != NULL &&
432 !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
433 {
434 // Special case optimisation to negate odd effect of sample aspect ratio
435 // not corresponding exactly with image resolution.
436 if ( ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) ) &&
437 ( (int)( mlt_frame_get_aspect_ratio( frame ) * 1000 ) == (int)( this->aspect_ratio * 1000 ) ) )
438 {
439 this->rect.w = this->window_width;
440 this->rect.h = this->window_height;
441 }
442 else
443 {
444 // Use hardware scaler to normalise display aspect ratio
445 this->rect.w = frame_aspect / this_aspect * this->window_width;
446 this->rect.h = this->window_height;
447 if ( this->rect.w > this->window_width )
448 {
449 this->rect.w = this->window_width;
450 this->rect.h = this_aspect / frame_aspect * this->window_height + 0.5;
451 }
452 }
453 }
454 // Special case optimisation to negate odd effect of sample aspect ratio
455 // not corresponding exactly with image resolution.
456 else if ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) )
457 {
458 this->rect.w = this->window_width;
459 this->rect.h = this->window_height;
460 }
461 // Use hardware scaler to normalise sample aspect ratio
462 else if ( this->window_height * this->display_aspect > this->window_width )
463 {
464 this->rect.w = this->window_width;
465 this->rect.h = this->window_width / this->display_aspect + 0.5;
466 }
467 else
468 {
469 this->rect.w = this->window_height * this->display_aspect + 0.5;
470 this->rect.h = this->window_height;
471 }
472
473 this->rect.x = ( this->window_width - this->rect.w ) / 2;
474 this->rect.y = ( this->window_height - this->rect.h ) / 2;
475
476 // Force an overlay recreation
477 if ( this->sdl_overlay != NULL )
478 SDL_FreeYUVOverlay( this->sdl_overlay );
479
480 // open SDL window with video overlay, if possible
481 sdl_lock_display();
482 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
483 sdl_unlock_display();
484
485 if ( this->sdl_screen != NULL )
486 {
487 SDL_SetClipRect( this->sdl_screen, &this->rect );
488 sdl_lock_display();
489 this->sdl_overlay = SDL_CreateYUVOverlay( this->width, this->height, SDL_YUY2_OVERLAY, this->sdl_screen );
490 sdl_unlock_display();
491 }
492 }
493
494 if ( mlt_properties_get_int( properties, "changed" ) )
495 {
496 sdl_lock_display();
497 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
498 SDL_SetClipRect( this->sdl_screen, &this->rect );
499 SDL_Flip( this->sdl_screen );
500 sdl_unlock_display();
501 mlt_properties_set_int( properties, "changed", 0 );
502 }
503
504 if ( this->sdl_screen != NULL && this->sdl_overlay != NULL )
505 {
506 this->buffer = this->sdl_overlay->pixels[ 0 ];
507 sdl_lock_display();
508 if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
509 {
510 if ( image != NULL )
511 memcpy( this->buffer, image, width * height * 2 );
512 SDL_UnlockYUVOverlay( this->sdl_overlay );
513 SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
514 }
515 sdl_unlock_display();
516 }
517 }
518
519 return 0;
520 }
521
522 static void *video_thread( void *arg )
523 {
524 // Identify the arg
525 consumer_sdl this = arg;
526
527 // Obtain time of thread start
528 struct timeval now;
529 int64_t start = 0;
530 int64_t elapsed = 0;
531 struct timespec tm;
532 mlt_frame next = NULL;
533 mlt_properties properties = NULL;
534 double speed = 0;
535
536 // Get the current time
537 gettimeofday( &now, NULL );
538
539 // Determine start time
540 start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
541
542 while ( this->running )
543 {
544 // Pop the next frame
545 pthread_mutex_lock( &this->video_mutex );
546 while ( ( next = mlt_deque_pop_front( this->queue ) ) == NULL && this->running )
547 pthread_cond_wait( &this->video_cond, &this->video_mutex );
548 pthread_mutex_unlock( &this->video_mutex );
549
550 // Get the properties
551 properties = mlt_frame_properties( next );
552
553 // Get the speed of the frame
554 speed = mlt_properties_get_double( properties, "_speed" );
555
556 // Get the current time
557 gettimeofday( &now, NULL );
558
559 // Get the elapsed time
560 elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
561
562 // See if we have to delay the display of the current frame
563 if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
564 {
565 // Obtain the scheduled playout time
566 mlt_position scheduled = mlt_properties_get_position( properties, "playtime" );
567
568 // Determine the difference between the elapsed time and the scheduled playout time
569 mlt_position difference = scheduled - elapsed;
570
571 // Smooth playback a bit
572 if ( difference > 20000 && speed == 1.0 )
573 {
574 tm.tv_sec = difference / 1000000;
575 tm.tv_nsec = ( difference % 1000000 ) * 500;
576 nanosleep( &tm, NULL );
577 }
578
579 // Show current frame if not too old
580 if ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 )
581 consumer_play_video( this, next );
582
583 // If the queue is empty, recalculate start to allow build up again
584 if ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 )
585 {
586 gettimeofday( &now, NULL );
587 start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
588 }
589 }
590
591 // This frame can now be closed
592 mlt_frame_close( next );
593 }
594
595 return NULL;
596 }
597
598 /** Threaded wrapper for pipe.
599 */
600
601 static void *consumer_thread( void *arg )
602 {
603 // Identify the arg
604 consumer_sdl this = arg;
605
606 // Get the consumer
607 mlt_consumer consumer = &this->parent;
608
609 // Video thread
610 pthread_t thread;
611
612 // internal intialization
613 int init_audio = 1;
614 int init_video = 1;
615 mlt_frame frame = NULL;
616 mlt_properties properties = NULL;
617 int duration = 0;
618 int64_t playtime = 0;
619 struct timespec tm = { 0, 100000 };
620
621 if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE ) < 0 )
622 {
623 fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
624 return NULL;
625 }
626
627 SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
628 SDL_EnableUNICODE( 1 );
629
630 // Loop until told not to
631 while( this->running )
632 {
633 // Get a frame from the attached producer
634 frame = mlt_consumer_rt_frame( consumer );
635
636 // Ensure that we have a frame
637 if ( frame != NULL )
638 {
639 // Get the frame properties
640 properties = mlt_frame_properties( frame );
641
642 // Play audio
643 init_audio = consumer_play_audio( this, frame, init_audio, &duration );
644
645 // Determine the start time now
646 if ( this->playing && init_video )
647 {
648 // Create the video thread
649 pthread_create( &thread, NULL, video_thread, this );
650
651 // Video doesn't need to be initialised any more
652 init_video = 0;
653 }
654
655 // Set playtime for this frame
656 mlt_properties_set_position( properties, "playtime", playtime );
657
658 while ( this->running && mlt_deque_count( this->queue ) > 15 )
659 nanosleep( &tm, NULL );
660
661 // Push this frame to the back of the queue
662 pthread_mutex_lock( &this->video_mutex );
663 mlt_deque_push_back( this->queue, frame );
664 pthread_cond_broadcast( &this->video_cond );
665 pthread_mutex_unlock( &this->video_mutex );
666
667 // Calculate the next playtime
668 playtime += ( duration * 1000 );
669 }
670 }
671
672 // Kill the video thread
673 if ( init_video == 0 )
674 {
675 pthread_mutex_lock( &this->video_mutex );
676 pthread_cond_broadcast( &this->video_cond );
677 pthread_mutex_unlock( &this->video_mutex );
678 pthread_join( thread, NULL );
679 }
680
681 // internal cleanup
682 if ( this->sdl_overlay != NULL )
683 SDL_FreeYUVOverlay( this->sdl_overlay );
684 SDL_Quit( );
685
686 while( mlt_deque_count( this->queue ) )
687 mlt_frame_close( mlt_deque_pop_back( this->queue ) );
688
689 this->sdl_screen = NULL;
690 this->sdl_overlay = NULL;
691 this->audio_avail = 0;
692
693 return NULL;
694 }
695
696 static int consumer_get_dimensions( int *width, int *height )
697 {
698 int changed = 0;
699
700 // SDL windows manager structure
701 SDL_SysWMinfo wm;
702
703 // Specify the SDL Version
704 SDL_VERSION( &wm.version );
705
706 // Lock the display
707 sdl_lock_display();
708
709 // Get the wm structure
710 if ( SDL_GetWMInfo( &wm ) == 1 )
711 {
712 // Check that we have the X11 wm
713 if ( wm.subsystem == SDL_SYSWM_X11 )
714 {
715 // Get the SDL window
716 Window window = wm.info.x11.window;
717
718 // Get the display session
719 Display *display = wm.info.x11.display;
720
721 // Get the window attributes
722 XWindowAttributes attr;
723 XGetWindowAttributes( display, window, &attr );
724
725 // Determine whether window has changed
726 changed = *width != attr.width || *height != attr.height;
727
728 // Return width and height
729 *width = attr.width;
730 *height = attr.height;
731 }
732 }
733
734 // Unlock the display
735 sdl_lock_display();
736
737 return changed;
738 }
739
740 /** Callback to allow override of the close method.
741 */
742
743 static void consumer_close( mlt_consumer parent )
744 {
745 // Get the actual object
746 consumer_sdl this = parent->child;
747
748 // Stop the consumer
749 mlt_consumer_stop( parent );
750
751 // Close the queue
752 mlt_deque_close( this->queue );
753
754 // Destroy mutexes
755 pthread_mutex_destroy( &this->audio_mutex );
756 pthread_cond_destroy( &this->audio_cond );
757
758 // Now clean up the rest
759 mlt_consumer_close( parent );
760
761 // Finally clean up this
762 free( this );
763 }