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 library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <framework/mlt_consumer.h>
22 #include <framework/mlt_frame.h>
23 #include <framework/mlt_deque.h>
24 #include <framework/mlt_factory.h>
25 #include <framework/mlt_filter.h>
26 #include <framework/mlt_log.h>
32 #include <SDL/SDL_syswm.h>
34 #include "consumer_sdl_osx.h"
36 extern pthread_mutex_t mlt_sdl_mutex;
38 /** This classes definition.
41 typedef struct consumer_sdl_s *consumer_sdl;
45 struct mlt_consumer_s parent;
46 mlt_properties properties;
51 uint8_t audio_buffer[ 4096 * 10 ];
53 pthread_mutex_t audio_mutex;
54 pthread_cond_t audio_cond;
55 pthread_mutex_t video_mutex;
56 pthread_cond_t video_cond;
65 SDL_Surface *sdl_screen;
66 SDL_Overlay *sdl_overlay;
72 /** Forward references to static functions.
75 static int consumer_start( mlt_consumer parent );
76 static int consumer_stop( mlt_consumer parent );
77 static int consumer_is_stopped( mlt_consumer parent );
78 static void consumer_close( mlt_consumer parent );
79 static void *consumer_thread( void * );
80 static int consumer_get_dimensions( int *width, int *height );
81 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
83 /** This is what will be called by the factory - anything can be passed in
84 via the argument, but keep it simple.
87 mlt_consumer consumer_sdl_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
89 // Create the consumer object
90 consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
92 // If no malloc'd and consumer init ok
93 if ( this != NULL && mlt_consumer_init( &this->parent, this, profile ) == 0 )
96 this->queue = mlt_deque_init( );
98 // Get the parent consumer object
99 mlt_consumer parent = &this->parent;
101 // We have stuff to clean up, so override the close method
102 parent->close = consumer_close;
104 // get a handle on properties
105 mlt_service service = MLT_CONSUMER_SERVICE( parent );
106 this->properties = MLT_SERVICE_PROPERTIES( service );
108 // Set the default volume
109 mlt_properties_set_double( this->properties, "volume", 1.0 );
111 // This is the initialisation of the consumer
112 pthread_mutex_init( &this->audio_mutex, NULL );
113 pthread_cond_init( &this->audio_cond, NULL);
114 pthread_mutex_init( &this->video_mutex, NULL );
115 pthread_cond_init( &this->video_cond, NULL);
117 // Default scaler (for now we'll use nearest)
118 mlt_properties_set( this->properties, "rescale", "nearest" );
119 mlt_properties_set( this->properties, "deinterlace_method", "onefield" );
121 // Default buffer for low latency
122 mlt_properties_set_int( this->properties, "buffer", 1 );
124 // Default audio buffer
125 mlt_properties_set_int( this->properties, "audio_buffer", 512 );
127 // Ensure we don't join on a non-running object
130 // process actual param
131 if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
133 this->width = mlt_properties_get_int( this->properties, "width" );
134 this->height = mlt_properties_get_int( this->properties, "height" );
138 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
140 // Allow thread to be started/stopped
141 parent->start = consumer_start;
142 parent->stop = consumer_stop;
143 parent->is_stopped = consumer_is_stopped;
145 // Register specific events
146 mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
148 // Return the consumer produced
152 // malloc or consumer init failed
159 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
161 if ( listener != NULL )
162 listener( owner, this, ( SDL_Event * )args[ 0 ] );
165 int consumer_start( mlt_consumer parent )
167 consumer_sdl this = parent->child;
169 if ( !this->running )
171 int video_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "video_off" );
172 int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
173 int display_off = video_off | preview_off;
174 int audio_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" );
175 int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
177 consumer_stop( parent );
182 if ( mlt_properties_get_int( this->properties, "width" ) > 0 )
183 this->width = mlt_properties_get_int( this->properties, "width" );
184 if ( mlt_properties_get_int( this->properties, "height" ) > 0 )
185 this->height = mlt_properties_get_int( this->properties, "height" );
187 this->bpp = mlt_properties_get_int( this->properties, "bpp" );
189 if ( sdl_started == 0 && display_off == 0 )
191 if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
193 mlt_log_error( MLT_CONSUMER_SERVICE(parent), "Failed to initialize SDL: %s\n", SDL_GetError() );
197 SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
198 SDL_EnableUNICODE( 1 );
200 else if ( display_off == 0 )
202 this->sdl_screen = SDL_GetVideoSurface( );
205 if ( audio_off == 0 )
206 SDL_InitSubSystem( SDL_INIT_AUDIO );
208 // Default window size
209 double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
210 this->window_width = ( double )this->height * display_ratio;
211 this->window_height = this->height;
213 if ( this->sdl_screen == NULL && display_off == 0 )
215 if ( mlt_properties_get_int( this->properties, "fullscreen" ) )
217 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
218 this->window_width = vi->current_w;
219 this->window_height = vi->current_h;
220 this->sdl_flags |= SDL_FULLSCREEN;
221 SDL_ShowCursor( SDL_DISABLE );
223 pthread_mutex_lock( &mlt_sdl_mutex );
224 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
225 pthread_mutex_unlock( &mlt_sdl_mutex );
228 pthread_create( &this->thread, NULL, consumer_thread, this );
234 int consumer_stop( mlt_consumer parent )
236 // Get the actual object
237 consumer_sdl this = parent->child;
239 if ( this->joined == 0 )
241 // Kill the thread and clean up
245 pthread_join( this->thread, NULL );
248 if ( this->sdl_overlay != NULL )
249 SDL_FreeYUVOverlay( this->sdl_overlay );
250 this->sdl_overlay = NULL;
252 if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" ) )
254 pthread_mutex_lock( &this->audio_mutex );
255 pthread_cond_broadcast( &this->audio_cond );
256 pthread_mutex_unlock( &this->audio_mutex );
257 SDL_QuitSubSystem( SDL_INIT_AUDIO );
260 if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" ) == 0 )
262 pthread_mutex_lock( &mlt_sdl_mutex );
264 pthread_mutex_unlock( &mlt_sdl_mutex );
267 this->sdl_screen = NULL;
273 int consumer_is_stopped( mlt_consumer parent )
275 consumer_sdl this = parent->child;
276 return !this->running;
279 static int sdl_lock_display( )
281 pthread_mutex_lock( &mlt_sdl_mutex );
282 SDL_Surface *screen = SDL_GetVideoSurface( );
283 int result = screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
284 pthread_mutex_unlock( &mlt_sdl_mutex );
288 static void sdl_unlock_display( )
290 pthread_mutex_lock( &mlt_sdl_mutex );
291 SDL_Surface *screen = SDL_GetVideoSurface( );
292 if ( screen != NULL && SDL_MUSTLOCK( screen ) )
293 SDL_UnlockSurface( screen );
294 pthread_mutex_unlock( &mlt_sdl_mutex );
297 static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
299 consumer_sdl this = udata;
302 double volume = mlt_properties_get_double( this->properties, "volume" );
304 pthread_mutex_lock( &this->audio_mutex );
306 // Block until audio received
307 while ( this->running && len > this->audio_avail )
308 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
310 if ( this->audio_avail >= len )
312 // Place in the audio buffer
314 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
316 memcpy( stream, this->audio_buffer, len );
318 // Remove len from the audio available
319 this->audio_avail -= len;
321 // Remove the samples
322 memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
326 // Just to be safe, wipe the stream first
327 memset( stream, 0, len );
330 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
333 this->audio_avail = 0;
336 // We're definitely playing now
339 pthread_cond_broadcast( &this->audio_cond );
340 pthread_mutex_unlock( &this->audio_mutex );
343 static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
345 // Get the properties of this consumer
346 mlt_properties properties = this->properties;
347 mlt_audio_format afmt = mlt_audio_s16;
349 // Set the preferred params of the test card signal
350 int channels = mlt_properties_get_int( properties, "channels" );
351 int dest_channels = channels;
352 int frequency = mlt_properties_get_int( properties, "frequency" );
353 static int counter = 0;
355 int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
360 mlt_frame_get_audio( frame, (void**) &pcm, &afmt, &frequency, &channels, &samples );
361 *duration = ( ( samples * 1000 ) / frequency );
362 pcm += mlt_properties_get_int( properties, "audio_offset" );
364 if ( mlt_properties_get_int( properties, "audio_off" ) )
371 if ( init_audio == 1 )
373 SDL_AudioSpec request;
376 int audio_buffer = mlt_properties_get_int( properties, "audio_buffer" );
378 // specify audio format
379 memset( &request, 0, sizeof( SDL_AudioSpec ) );
381 request.freq = frequency;
382 request.format = AUDIO_S16SYS;
383 request.channels = dest_channels;
384 request.samples = audio_buffer;
385 request.callback = sdl_fill_audio;
386 request.userdata = (void *)this;
387 if ( SDL_OpenAudio( &request, &got ) != 0 )
389 mlt_log_error( MLT_CONSUMER_SERVICE( this ), "SDL failed to open audio: %s\n", SDL_GetError() );
392 else if ( got.size != 0 )
399 if ( init_audio == 0 )
401 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
403 bytes = samples * dest_channels * sizeof(*pcm);
404 pthread_mutex_lock( &this->audio_mutex );
405 while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
406 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
409 if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
411 if ( channels == dest_channels )
413 memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
417 int16_t *dest = (int16_t*) &this->audio_buffer[ this->audio_avail ];
422 memcpy( dest, pcm, dest_channels * sizeof(*pcm) );
424 dest += dest_channels;
430 memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
432 this->audio_avail += bytes;
434 pthread_cond_broadcast( &this->audio_cond );
435 pthread_mutex_unlock( &this->audio_mutex );
445 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
447 // Get the properties of this consumer
448 mlt_properties properties = this->properties;
450 mlt_image_format vfmt = mlt_image_yuv422;
451 int width = this->width, height = this->height;
455 int video_off = mlt_properties_get_int( properties, "video_off" );
456 int preview_off = mlt_properties_get_int( properties, "preview_off" );
457 mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
458 int display_off = video_off | preview_off;
460 if ( this->running && display_off == 0 )
462 // Get the image, width and height
463 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
464 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
466 void *pool = mlt_cocoa_autorelease_init();
469 if ( this->sdl_screen != NULL )
474 pthread_mutex_lock( &mlt_sdl_mutex );
475 changed = consumer_get_dimensions( &this->window_width, &this->window_height );
476 pthread_mutex_unlock( &mlt_sdl_mutex );
477 sdl_unlock_display( );
479 while ( SDL_PollEvent( &event ) )
481 mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
485 case SDL_VIDEORESIZE:
486 this->window_width = event.resize.w;
487 this->window_height = event.resize.h;
495 mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
496 char keyboard[ 2 ] = " ";
497 void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
498 if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
500 keyboard[ 0 ] = ( char )event.key.keysym.unicode;
501 callback( producer, keyboard );
511 if ( width != this->width || height != this->height )
513 if ( this->sdl_overlay != NULL )
514 SDL_FreeYUVOverlay( this->sdl_overlay );
515 this->sdl_overlay = NULL;
518 if ( this->running && ( this->sdl_screen == NULL || changed ) )
520 // Force an overlay recreation
521 if ( this->sdl_overlay != NULL )
522 SDL_FreeYUVOverlay( this->sdl_overlay );
523 this->sdl_overlay = NULL;
525 // open SDL window with video overlay, if possible
526 pthread_mutex_lock( &mlt_sdl_mutex );
527 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
528 if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
529 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
530 pthread_mutex_unlock( &mlt_sdl_mutex );
532 uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
533 SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
534 SDL_Flip( this->sdl_screen );
539 // Determine window's new display aspect ratio
540 double this_aspect = ( double )this->window_width / this->window_height;
542 // Get the display aspect ratio
543 double display_ratio = mlt_properties_get_double( properties, "display_ratio" );
545 // Determine frame's display aspect ratio
546 double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
548 // Store the width and height received
550 this->height = height;
552 // If using hardware scaler
553 if ( mlt_properties_get( properties, "rescale" ) != NULL &&
554 !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
556 // Use hardware scaler to normalise display aspect ratio
557 this->rect.w = frame_aspect / this_aspect * this->window_width;
558 this->rect.h = this->window_height;
559 if ( this->rect.w > this->window_width )
561 this->rect.w = this->window_width;
562 this->rect.h = this_aspect / frame_aspect * this->window_height;
565 // Special case optimisation to negate odd effect of sample aspect ratio
566 // not corresponding exactly with image resolution.
567 else if ( (int)( this_aspect * 1000 ) == (int)( display_ratio * 1000 ) )
569 this->rect.w = this->window_width;
570 this->rect.h = this->window_height;
572 // Use hardware scaler to normalise sample aspect ratio
573 else if ( this->window_height * display_ratio > this->window_width )
575 this->rect.w = this->window_width;
576 this->rect.h = this->window_width / display_ratio;
580 this->rect.w = this->window_height * display_ratio;
581 this->rect.h = this->window_height;
584 this->rect.x = ( this->window_width - this->rect.w ) / 2;
585 this->rect.y = ( this->window_height - this->rect.h ) / 2;
586 this->rect.x -= this->rect.x % 2;
588 mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
589 mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
590 mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
591 mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
593 SDL_SetClipRect( this->sdl_screen, &this->rect );
596 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay == NULL )
598 SDL_SetClipRect( this->sdl_screen, &this->rect );
599 this->sdl_overlay = SDL_CreateYUVOverlay( width, height, SDL_YUY2_OVERLAY, this->sdl_screen );
602 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay != NULL )
604 this->buffer = this->sdl_overlay->pixels[ 0 ];
605 if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
608 memcpy( this->buffer, image, width * height * 2 );
609 SDL_UnlockYUVOverlay( this->sdl_overlay );
610 SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
614 sdl_unlock_display();
615 mlt_cocoa_autorelease_close( pool );
616 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
618 else if ( this->running )
620 vfmt = preview_format == mlt_image_none ? mlt_image_rgb24a : preview_format;
622 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
623 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
624 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
630 static void *video_thread( void *arg )
633 consumer_sdl this = arg;
635 // Obtain time of thread start
640 mlt_frame next = NULL;
641 mlt_properties properties = NULL;
644 // Get real time flag
645 int real_time = mlt_properties_get_int( this->properties, "real_time" );
647 // Get the current time
648 gettimeofday( &now, NULL );
650 // Determine start time
651 start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
653 while ( this->running )
655 // Pop the next frame
656 pthread_mutex_lock( &this->video_mutex );
657 next = mlt_deque_pop_front( this->queue );
658 while ( next == NULL && this->running )
660 pthread_cond_wait( &this->video_cond, &this->video_mutex );
661 next = mlt_deque_pop_front( this->queue );
663 pthread_mutex_unlock( &this->video_mutex );
665 if ( !this->running || next == NULL ) break;
667 // Get the properties
668 properties = MLT_FRAME_PROPERTIES( next );
670 // Get the speed of the frame
671 speed = mlt_properties_get_double( properties, "_speed" );
673 // Get the current time
674 gettimeofday( &now, NULL );
676 // Get the elapsed time
677 elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
679 // See if we have to delay the display of the current frame
680 if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
682 // Obtain the scheduled playout time
683 int64_t scheduled = mlt_properties_get_int( properties, "playtime" );
685 // Determine the difference between the elapsed time and the scheduled playout time
686 int64_t difference = scheduled - elapsed;
688 // Smooth playback a bit
689 if ( real_time && ( difference > 20000 && speed == 1.0 ) )
691 tm.tv_sec = difference / 1000000;
692 tm.tv_nsec = ( difference % 1000000 ) * 500;
693 nanosleep( &tm, NULL );
696 // Show current frame if not too old
697 if ( !real_time || ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 ) )
698 consumer_play_video( this, next );
700 // If the queue is empty, recalculate start to allow build up again
701 if ( real_time && ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 ) )
703 gettimeofday( &now, NULL );
704 start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
709 mlt_log_debug( MLT_CONSUMER_SERVICE(&this->parent), "dropped video frame\n" );
712 // This frame can now be closed
713 mlt_frame_close( next );
718 mlt_frame_close( next );
720 mlt_consumer_stopped( &this->parent );
725 /** Threaded wrapper for pipe.
728 static void *consumer_thread( void *arg )
731 consumer_sdl this = arg;
734 mlt_consumer consumer = &this->parent;
736 // Convenience functionality
737 int terminate_on_pause = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "terminate_on_pause" );
743 // internal intialization
746 mlt_frame frame = NULL;
747 mlt_properties properties = NULL;
749 int64_t playtime = 0;
750 struct timespec tm = { 0, 100000 };
752 // Loop until told not to
753 while( !terminated && this->running )
755 // Get a frame from the attached producer
756 frame = mlt_consumer_rt_frame( consumer );
758 // Check for termination
759 if ( terminate_on_pause && frame != NULL )
760 terminated = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" ) == 0.0;
762 // Ensure that we have a frame
765 // Get the frame properties
766 properties = MLT_FRAME_PROPERTIES( frame );
769 init_audio = consumer_play_audio( this, frame, init_audio, &duration );
771 // Determine the start time now
772 if ( this->playing && init_video )
774 // Create the video thread
775 pthread_create( &thread, NULL, video_thread, this );
777 // Video doesn't need to be initialised any more
781 // Set playtime for this frame
782 mlt_properties_set_int( properties, "playtime", playtime );
784 while ( this->running && mlt_deque_count( this->queue ) > 15 )
785 nanosleep( &tm, NULL );
787 // Push this frame to the back of the queue
788 pthread_mutex_lock( &this->video_mutex );
789 mlt_deque_push_back( this->queue, frame );
790 pthread_cond_broadcast( &this->video_cond );
791 pthread_mutex_unlock( &this->video_mutex );
793 // Calculate the next playtime
794 playtime += ( duration * 1000 );
800 // Kill the video thread
801 if ( init_video == 0 )
803 pthread_mutex_lock( &this->video_mutex );
804 pthread_cond_broadcast( &this->video_cond );
805 pthread_mutex_unlock( &this->video_mutex );
806 pthread_join( thread, NULL );
809 while( mlt_deque_count( this->queue ) )
810 mlt_frame_close( mlt_deque_pop_back( this->queue ) );
812 this->sdl_screen = NULL;
813 this->audio_avail = 0;
818 static int consumer_get_dimensions( int *width, int *height )
822 // SDL windows manager structure
825 // Specify the SDL Version
826 SDL_VERSION( &wm.version );
829 //sdl_lock_display();
832 // Get the wm structure
833 if ( SDL_GetWMInfo( &wm ) == 1 )
835 // Check that we have the X11 wm
836 if ( wm.subsystem == SDL_SYSWM_X11 )
838 // Get the SDL window
839 Window window = wm.info.x11.window;
841 // Get the display session
842 Display *display = wm.info.x11.display;
844 // Get the window attributes
845 XWindowAttributes attr;
846 XGetWindowAttributes( display, window, &attr );
848 // Determine whether window has changed
849 changed = *width != attr.width || *height != attr.height;
851 // Return width and height
853 *height = attr.height;
858 // Unlock the display
859 //sdl_unlock_display();
864 /** Callback to allow override of the close method.
867 static void consumer_close( mlt_consumer parent )
869 // Get the actual object
870 consumer_sdl this = parent->child;
873 ///mlt_consumer_stop( parent );
875 // Now clean up the rest
876 mlt_consumer_close( parent );
879 mlt_deque_close( this->queue );
882 pthread_mutex_destroy( &this->audio_mutex );
883 pthread_cond_destroy( &this->audio_cond );
885 // Finally clean up this