2 * consumer_sdl.c -- A Simple DirectMedia Layer consumer
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
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.
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.
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.
21 #include "consumer_sdl.h"
22 #include <framework/mlt_frame.h>
23 #include <framework/mlt_deque.h>
29 #include <SDL/SDL_syswm.h>
33 # include "consumer_sdl_osx_hack.h"
34 # import <AppKit/NSApplication.h>
35 # import <Foundation/Foundation.h>
39 /** This classes definition.
42 typedef struct consumer_sdl_s
*consumer_sdl
;
46 struct mlt_consumer_s parent
;
47 mlt_properties properties
;
52 uint8_t audio_buffer
[ 4096 * 10 ];
54 pthread_mutex_t audio_mutex
;
55 pthread_cond_t audio_cond
;
56 pthread_mutex_t video_mutex
;
57 pthread_cond_t video_cond
;
62 double last_frame_aspect
;
67 SDL_Surface
*sdl_screen
;
68 SDL_Overlay
*sdl_overlay
;
74 /** Forward references to static functions.
77 static int consumer_start( mlt_consumer parent
);
78 static int consumer_stop( mlt_consumer parent
);
79 static int consumer_is_stopped( mlt_consumer parent
);
80 static void consumer_close( mlt_consumer parent
);
81 static void *consumer_thread( void * );
82 static int consumer_get_dimensions( int *width
, int *height
);
83 static void consumer_sdl_event( mlt_listener listener
, mlt_properties owner
, mlt_service
this, void **args
);
85 /** This is what will be called by the factory - anything can be passed in
86 via the argument, but keep it simple.
89 mlt_consumer
consumer_sdl_init( char *arg
)
94 [NSApplication sharedApplication
];
96 // Spawn a fake thread so that cocoa knows to be multithreaded
97 DummyThread
*dummy
= [[DummyThread alloc
] init
];
98 [NSThread detachNewThreadSelector
:@
selector(startThread
:) toTarget
:dummy withObject
:nil
];
101 // Create the consumer object
102 consumer_sdl
this = calloc( sizeof( struct consumer_sdl_s
), 1 );
104 // If no malloc'd and consumer init ok
105 if ( this != NULL
&& mlt_consumer_init( &this->parent
, this ) == 0 )
108 this->queue
= mlt_deque_init( );
110 // Get the parent consumer object
111 mlt_consumer parent
= &this->parent
;
113 // We have stuff to clean up, so override the close method
114 parent
->close
= consumer_close
;
116 // get a handle on properties
117 mlt_service service
= MLT_CONSUMER_SERVICE( parent
);
118 this->properties
= MLT_SERVICE_PROPERTIES( service
);
120 // Set the default volume
121 mlt_properties_set_double( this->properties
, "volume", 1.0 );
123 // This is the initialisation of the consumer
124 pthread_mutex_init( &this->audio_mutex
, NULL
);
125 pthread_cond_init( &this->audio_cond
, NULL
);
126 pthread_mutex_init( &this->video_mutex
, NULL
);
127 pthread_cond_init( &this->video_cond
, NULL
);
129 // Default scaler (for now we'll use nearest)
130 mlt_properties_set( this->properties
, "rescale", "nearest" );
132 // Default buffer for low latency
133 mlt_properties_set_int( this->properties
, "buffer", 1 );
135 // Default progressive true
136 mlt_properties_set_int( this->properties
, "progressive", 0 );
138 // Default audio buffer
139 mlt_properties_set_int( this->properties
, "audio_buffer", 512 );
141 // Get sample aspect ratio
142 this->aspect_ratio
= mlt_properties_get_double( this->properties
, "aspect_ratio" );
144 // Ensure we don't join on a non-running object
147 // Default display aspect ratio
148 this->display_aspect
= 4.0 / 3.0;
150 // process actual param
151 if ( arg
== NULL
|| sscanf( arg
, "%dx%d", &this->width
, &this->height
) != 2 )
153 this->width
= mlt_properties_get_int( this->properties
, "width" );
154 this->height
= mlt_properties_get_int( this->properties
, "height" );
157 // Default window size
158 this->window_width
= ( float )this->height
* this->display_aspect
;
159 this->window_height
= this->height
;
162 this->sdl_flags
= SDL_HWSURFACE
| SDL_ASYNCBLIT
| SDL_HWACCEL
| SDL_RESIZABLE
| SDL_DOUBLEBUF
;
164 // Allow thread to be started/stopped
165 parent
->start
= consumer_start
;
166 parent
->stop
= consumer_stop
;
167 parent
->is_stopped
= consumer_is_stopped
;
169 // Register specific events
170 mlt_events_register( this->properties
, "consumer-sdl-event", ( mlt_transmitter
)consumer_sdl_event
);
172 // Return the consumer produced
176 // malloc or consumer init failed
183 static void consumer_sdl_event( mlt_listener listener
, mlt_properties owner
, mlt_service
this, void **args
)
185 if ( listener
!= NULL
)
186 listener( owner
, this, ( SDL_Event
* )args
[ 0 ] );
189 int consumer_start( mlt_consumer parent
)
191 consumer_sdl
this = parent
->child
;
193 if ( !this->running
)
195 consumer_stop( parent
);
200 // Allow the user to force resizing to window size
201 if ( mlt_properties_get_int( this->properties
, "resize" ) )
203 mlt_properties_set_int( this->properties
, "width", this->width
);
204 mlt_properties_set_int( this->properties
, "height", this->height
);
207 pthread_create( &this->thread
, NULL
, consumer_thread
, this );
213 int consumer_stop( mlt_consumer parent
)
215 // Get the actual object
216 consumer_sdl
this = parent
->child
;
218 if ( this->joined
== 0 )
220 // Kill the thread and clean up
223 pthread_join( this->thread
, NULL
);
229 int consumer_is_stopped( mlt_consumer parent
)
231 consumer_sdl
this = parent
->child
;
232 return !this->running
;
235 static int sdl_lock_display( )
237 SDL_Surface
*screen
= SDL_GetVideoSurface( );
238 return screen
!= NULL
&& ( !SDL_MUSTLOCK( screen
) || SDL_LockSurface( screen
) >= 0 );
241 static void sdl_unlock_display( )
243 SDL_Surface
*screen
= SDL_GetVideoSurface( );
244 if ( screen
!= NULL
&& SDL_MUSTLOCK( screen
) )
245 SDL_UnlockSurface( screen
);
248 static void sdl_fill_audio( void *udata
, uint8_t *stream
, int len
)
250 consumer_sdl
this = udata
;
253 float volume
= mlt_properties_get_double( this->properties
, "volume" );
255 pthread_mutex_lock( &this->audio_mutex
);
257 // Block until audio received
258 while ( this->running
&& len
> this->audio_avail
)
259 pthread_cond_wait( &this->audio_cond
, &this->audio_mutex
);
261 if ( this->audio_avail
>= len
)
263 // Place in the audio buffer
264 memcpy( stream
, this->audio_buffer
, len
);
266 // Remove len from the audio available
267 this->audio_avail
-= len
;
269 // Remove the samples
270 memmove( this->audio_buffer
, this->audio_buffer
+ len
, this->audio_avail
);
274 // Just to be safe, wipe the stream first
275 memset( stream
, 0, len
);
277 // Copy what we have into the stream
278 memcpy( stream
, this->audio_buffer
, this->audio_avail
);
281 SDL_MixAudio( stream
, stream
, len
, ( int )( ( float )SDL_MIX_MAXVOLUME
* volume
) );
284 this->audio_avail
= 0;
287 // We're definitely playing now
290 pthread_cond_broadcast( &this->audio_cond
);
291 pthread_mutex_unlock( &this->audio_mutex
);
294 static int consumer_play_audio( consumer_sdl
this, mlt_frame frame
, int init_audio
, int *duration
)
296 // Get the properties of this consumer
297 mlt_properties properties
= this->properties
;
298 mlt_audio_format afmt
= mlt_audio_pcm
;
300 // Set the preferred params of the test card signal
301 int channels
= mlt_properties_get_int( properties
, "channels" );
302 int frequency
= mlt_properties_get_int( properties
, "frequency" );
303 static int counter
= 0;
305 int samples
= mlt_sample_calculator( mlt_properties_get_double( this->properties
, "fps" ), frequency
, counter
++ );
310 mlt_frame_get_audio( frame
, &pcm
, &afmt
, &frequency
, &channels
, &samples
);
311 *duration
= ( ( samples
* 1000 ) / frequency
);
313 if ( mlt_properties_get_int( properties
, "audio_off" ) )
320 if ( init_audio
== 1 )
322 SDL_AudioSpec request
;
325 int audio_buffer
= mlt_properties_get_int( properties
, "audio_buffer" );
327 // specify audio format
328 memset( &request
, 0, sizeof( SDL_AudioSpec
) );
330 request
.freq
= frequency
;
331 request
.format
= AUDIO_S16
;
332 request
.channels
= channels
;
333 request
.samples
= audio_buffer
;
334 request
.callback
= sdl_fill_audio
;
335 request
.userdata
= (void *)this;
336 if ( SDL_OpenAudio( &request
, &got
) != 0 )
338 fprintf( stderr
, "SDL failed to open audio: %s\n", SDL_GetError() );
341 else if ( got
.size
!= 0 )
348 if ( init_audio
== 0 )
350 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
351 bytes
= ( samples
* channels
* 2 );
352 pthread_mutex_lock( &this->audio_mutex
);
353 while ( this->running
&& bytes
> ( sizeof( this->audio_buffer
) - this->audio_avail
) )
354 pthread_cond_wait( &this->audio_cond
, &this->audio_mutex
);
357 if ( mlt_properties_get_double( properties
, "_speed" ) == 1 )
358 memcpy( &this->audio_buffer
[ this->audio_avail
], pcm
, bytes
);
360 memset( &this->audio_buffer
[ this->audio_avail
], 0, bytes
);
361 this->audio_avail
+= bytes
;
363 pthread_cond_broadcast( &this->audio_cond
);
364 pthread_mutex_unlock( &this->audio_mutex
);
374 static int consumer_play_video( consumer_sdl
this, mlt_frame frame
)
376 // Get the properties of this consumer
377 mlt_properties properties
= this->properties
;
379 mlt_image_format vfmt
= mlt_image_yuv422
;
380 int width
= this->width
, height
= this->height
;
384 if ( this->running
&& mlt_properties_get_int( properties
, "video_off" ) == 0 )
386 // Get the image, width and height
387 mlt_events_fire( properties
, "consumer-frame-show", frame
, NULL
);
388 mlt_frame_get_image( frame
, &image
, &vfmt
, &width
, &height
, 0 );
391 if ( this->sdl_screen
!= NULL
)
395 changed
= consumer_get_dimensions( &this->window_width
, &this->window_height
);
397 while ( SDL_PollEvent( &event
) )
399 mlt_events_fire( this->properties
, "consumer-sdl-event", &event
, NULL
);
403 case SDL_VIDEORESIZE
:
404 this->window_width
= event
.resize
.w
;
405 this->window_height
= event
.resize
.h
;
413 mlt_producer producer
= mlt_properties_get_data( properties
, "transport_producer", NULL
);
414 char keyboard
[ 2 ] = " ";
415 void (*callback
)( mlt_producer
, char * ) = mlt_properties_get_data( properties
, "transport_callback", NULL
);
416 if ( callback
!= NULL
&& producer
!= NULL
&& event
.key
.keysym
.unicode
< 0x80 && event
.key
.keysym
.unicode
> 0 )
418 keyboard
[ 0 ] = ( char )event
.key
.keysym
.unicode
;
419 callback( producer
, keyboard
);
427 if ( width
!= this->width
|| height
!= this->height
)
429 if ( this->sdl_overlay
!= NULL
)
430 SDL_FreeYUVOverlay( this->sdl_overlay
);
431 this->sdl_overlay
= NULL
;
434 if ( this->running
&& ( this->sdl_screen
== NULL
|| changed
) )
436 // Force an overlay recreation
437 if ( this->sdl_overlay
!= NULL
)
438 SDL_FreeYUVOverlay( this->sdl_overlay
);
439 this->sdl_overlay
= NULL
;
441 // open SDL window with video overlay, if possible
443 this->sdl_screen
= SDL_SetVideoMode( this->window_width
, this->window_height
, this->bpp
, this->sdl_flags
);
444 sdl_unlock_display();
445 if ( consumer_get_dimensions( &this->window_width
, &this->window_height
) )
446 this->sdl_screen
= SDL_SetVideoMode( this->window_width
, this->window_height
, this->bpp
, this->sdl_flags
);
447 //SDL_Flip( this->sdl_screen );
448 mlt_properties_set_int( properties
, "changed", 0 );
450 else if ( mlt_properties_get_int( properties
, "changed" ) )
453 this->sdl_screen
= SDL_SetVideoMode( this->window_width
, this->window_height
, this->bpp
, this->sdl_flags
);
454 SDL_SetClipRect( this->sdl_screen
, &this->rect
);
455 sdl_unlock_display();
456 mlt_properties_set_int( properties
, "changed", 0 );
461 // Determine window's new display aspect ratio
462 float this_aspect
= ( float )this->window_width
/ this->window_height
;
464 // Determine frame's display aspect ratio
465 float frame_aspect
= mlt_frame_get_aspect_ratio( frame
) * width
/ height
;
467 this->height
= height
;
469 // If using hardware scaler
470 if ( mlt_properties_get( properties
, "rescale" ) != NULL
&&
471 !strcmp( mlt_properties_get( properties
, "rescale" ), "none" ) )
473 // Special case optimisation to negate odd effect of sample aspect ratio
474 // not corresponding exactly with image resolution.
475 if ( ( (int)( this_aspect
* 1000 ) == (int)( this->display_aspect
* 1000 ) ) &&
476 ( (int)( mlt_frame_get_aspect_ratio( frame
) * 1000 ) == (int)( this->aspect_ratio
* 1000 ) ) )
478 this->rect
.w
= this->window_width
;
479 this->rect
.h
= this->window_height
;
483 // Use hardware scaler to normalise display aspect ratio
484 this->rect
.w
= frame_aspect
/ this_aspect
* this->window_width
;
485 this->rect
.h
= this->window_height
;
486 if ( this->rect
.w
> this->window_width
)
488 this->rect
.w
= this->window_width
;
489 this->rect
.h
= this_aspect
/ frame_aspect
* this->window_height
;
493 // Special case optimisation to negate odd effect of sample aspect ratio
494 // not corresponding exactly with image resolution.
495 else if ( (int)( this_aspect
* 1000 ) == (int)( this->display_aspect
* 1000 ) )
497 this->rect
.w
= this->window_width
;
498 this->rect
.h
= this->window_height
;
500 // Use hardware scaler to normalise sample aspect ratio
501 else if ( this->window_height
* this->display_aspect
> this->window_width
)
503 this->rect
.w
= this->window_width
;
504 this->rect
.h
= this->window_width
/ this->display_aspect
;
508 this->rect
.w
= this->window_height
* this->display_aspect
;
509 this->rect
.h
= this->window_height
;
512 this->rect
.x
= ( this->window_width
- this->rect
.w
) / 2;
513 this->rect
.y
= ( this->window_height
- this->rect
.h
) / 2;
515 mlt_properties_set_int( this->properties
, "rect_x", this->rect
.x
);
516 mlt_properties_set_int( this->properties
, "rect_y", this->rect
.y
);
517 mlt_properties_set_int( this->properties
, "rect_w", this->rect
.w
);
518 mlt_properties_set_int( this->properties
, "rect_h", this->rect
.h
);
520 SDL_SetClipRect( this->sdl_screen
, &this->rect
);
523 if ( this->running
&& this->sdl_screen
!= NULL
&& this->sdl_overlay
== NULL
)
525 SDL_SetClipRect( this->sdl_screen
, &this->rect
);
526 SDL_Flip( this->sdl_screen
);
528 this->sdl_overlay
= SDL_CreateYUVOverlay( this->width
, this->height
, SDL_YUY2_OVERLAY
, this->sdl_screen
);
529 sdl_unlock_display();
532 if ( this->running
&& this->sdl_screen
!= NULL
&& this->sdl_overlay
!= NULL
)
534 this->buffer
= this->sdl_overlay
->pixels
[ 0 ];
536 if ( SDL_LockYUVOverlay( this->sdl_overlay
) >= 0 )
539 memcpy( this->buffer
, image
, width
* height
* 2 );
540 SDL_UnlockYUVOverlay( this->sdl_overlay
);
541 SDL_DisplayYUVOverlay( this->sdl_overlay
, &this->sdl_screen
->clip_rect
);
543 sdl_unlock_display();
550 static void *video_thread( void *arg
)
553 consumer_sdl
this = arg
;
556 NSAutoreleasePool
*pool
= [[NSAutoreleasePool alloc
] init
];
559 // Obtain time of thread start
564 mlt_frame next
= NULL
;
565 mlt_properties properties
= NULL
;
568 // Get real time flag
569 int real_time
= mlt_properties_get_int( this->properties
, "real_time" );
571 // Get the current time
572 gettimeofday( &now
, NULL
);
574 // Determine start time
575 start
= ( int64_t )now
.tv_sec
* 1000000 + now
.tv_usec
;
577 while ( this->running
)
579 // Pop the next frame
580 pthread_mutex_lock( &this->video_mutex
);
581 next
= mlt_deque_pop_front( this->queue
);
582 while ( next
== NULL
&& this->running
)
584 pthread_cond_wait( &this->video_cond
, &this->video_mutex
);
585 next
= mlt_deque_pop_front( this->queue
);
587 pthread_mutex_unlock( &this->video_mutex
);
589 if ( !this->running
|| next
== NULL
) break;
591 // Get the properties
592 properties
= MLT_FRAME_PROPERTIES( next
);
594 // Get the speed of the frame
595 speed
= mlt_properties_get_double( properties
, "_speed" );
597 // Get the current time
598 gettimeofday( &now
, NULL
);
600 // Get the elapsed time
601 elapsed
= ( ( int64_t )now
.tv_sec
* 1000000 + now
.tv_usec
) - start
;
603 // See if we have to delay the display of the current frame
604 if ( mlt_properties_get_int( properties
, "rendered" ) == 1 && this->running
)
606 // Obtain the scheduled playout time
607 mlt_position scheduled
= mlt_properties_get_position( properties
, "playtime" );
609 // Determine the difference between the elapsed time and the scheduled playout time
610 mlt_position difference
= scheduled
- elapsed
;
612 // Smooth playback a bit
613 if ( real_time
&& ( difference
> 20000 && speed
== 1.0 ) )
615 tm
.tv_sec
= difference
/ 1000000;
616 tm
.tv_nsec
= ( difference
% 1000000 ) * 500;
617 nanosleep( &tm
, NULL
);
620 // Show current frame if not too old
621 if ( !real_time
|| ( difference
> -10000 || speed
!= 1.0 || mlt_deque_count( this->queue
) < 2 ) )
622 consumer_play_video( this, next
);
624 // If the queue is empty, recalculate start to allow build up again
625 if ( real_time
&& ( mlt_deque_count( this->queue
) == 0 && speed
== 1.0 ) )
627 gettimeofday( &now
, NULL
);
628 start
= ( ( int64_t )now
.tv_sec
* 1000000 + now
.tv_usec
) - scheduled
+ 20000;
632 // This frame can now be closed
633 mlt_frame_close( next
);
638 mlt_frame_close( next
);
640 mlt_consumer_stopped( &this->parent
);
649 /** Threaded wrapper for pipe.
652 static void *consumer_thread( void *arg
)
655 consumer_sdl
this = arg
;
658 NSAutoreleasePool
*pool
= [[NSAutoreleasePool alloc
] init
];
662 mlt_consumer consumer
= &this->parent
;
667 // internal intialization
670 mlt_frame frame
= NULL
;
671 mlt_properties properties
= NULL
;
673 int64_t playtime
= 0;
674 struct timespec tm
= { 0, 100000 };
676 this->bpp
= mlt_properties_get_int( this->properties
, "bpp" );
678 if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer
), "sdl_started" ) == 0 )
680 if ( SDL_Init( SDL_INIT_VIDEO
| SDL_INIT_NOPARACHUTE
) < 0 )
682 fprintf( stderr
, "Failed to initialize SDL: %s\n", SDL_GetError() );
686 SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY
, SDL_DEFAULT_REPEAT_INTERVAL
);
687 SDL_EnableUNICODE( 1 );
691 if ( SDL_GetVideoSurface( ) != NULL
)
693 this->sdl_screen
= SDL_GetVideoSurface( );
694 consumer_get_dimensions( &this->window_width
, &this->window_height
);
695 mlt_properties_set_int( this->properties
, "changed", 0 );
699 if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer
), "audio_off" ) )
700 SDL_InitSubSystem( SDL_INIT_AUDIO
);
702 // Loop until told not to
703 while( this->running
)
705 // Get a frame from the attached producer
706 frame
= mlt_consumer_rt_frame( consumer
);
708 // Ensure that we have a frame
711 // Get the frame properties
712 properties
= MLT_FRAME_PROPERTIES( frame
);
715 init_audio
= consumer_play_audio( this, frame
, init_audio
, &duration
);
717 // Determine the start time now
718 if ( this->playing
&& init_video
)
720 // Create the video thread
721 pthread_create( &thread
, NULL
, video_thread
, this );
723 // Video doesn't need to be initialised any more
727 // Set playtime for this frame
728 mlt_properties_set_position( properties
, "playtime", playtime
);
730 while ( this->running
&& mlt_deque_count( this->queue
) > 15 )
731 nanosleep( &tm
, NULL
);
733 // Push this frame to the back of the queue
734 pthread_mutex_lock( &this->video_mutex
);
735 mlt_deque_push_back( this->queue
, frame
);
736 pthread_cond_broadcast( &this->video_cond
);
737 pthread_mutex_unlock( &this->video_mutex
);
739 // Calculate the next playtime
740 playtime
+= ( duration
* 1000 );
744 // Kill the video thread
745 if ( init_video
== 0 )
747 pthread_mutex_lock( &this->video_mutex
);
748 pthread_cond_broadcast( &this->video_cond
);
749 pthread_mutex_unlock( &this->video_mutex
);
750 pthread_join( thread
, NULL
);
754 if ( this->sdl_overlay
!= NULL
)
755 SDL_FreeYUVOverlay( this->sdl_overlay
);
757 if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer
), "audio_off" ) )
758 SDL_QuitSubSystem( SDL_INIT_AUDIO
);
760 //if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "sdl_started" ) == 0 )
763 while( mlt_deque_count( this->queue
) )
764 mlt_frame_close( mlt_deque_pop_back( this->queue
) );
766 this->sdl_screen
= NULL
;
767 this->sdl_overlay
= NULL
;
768 this->audio_avail
= 0;
777 static int consumer_get_dimensions( int *width
, int *height
)
781 // SDL windows manager structure
784 // Specify the SDL Version
785 SDL_VERSION( &wm
.version
);
791 // Get the wm structure
792 if ( SDL_GetWMInfo( &wm
) == 1 )
794 // Check that we have the X11 wm
795 if ( wm
.subsystem
== SDL_SYSWM_X11
)
797 // Get the SDL window
798 Window window
= wm
.info
.x11
.window
;
800 // Get the display session
801 Display
*display
= wm
.info
.x11
.display
;
803 // Get the window attributes
804 XWindowAttributes attr
;
805 XGetWindowAttributes( display
, window
, &attr
);
807 // Determine whether window has changed
808 changed
= *width
!= attr
.width
|| *height
!= attr
.height
;
810 // Return width and height
812 *height
= attr
.height
;
817 // Unlock the display
823 /** Callback to allow override of the close method.
826 static void consumer_close( mlt_consumer parent
)
828 // Get the actual object
829 consumer_sdl
this = parent
->child
;
832 ///mlt_consumer_stop( parent );
834 // Now clean up the rest
835 mlt_consumer_close( parent
);
838 mlt_deque_close( this->queue
);
841 pthread_mutex_destroy( &this->audio_mutex
);
842 pthread_cond_destroy( &this->audio_cond
);
844 // Finally clean up this