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>
35 extern pthread_mutex_t mlt_sdl_mutex;
37 /** This classes definition.
40 typedef struct consumer_sdl_s *consumer_sdl;
44 struct mlt_consumer_s parent;
45 mlt_properties properties;
50 uint8_t audio_buffer[ 4096 * 10 ];
52 pthread_mutex_t audio_mutex;
53 pthread_cond_t audio_cond;
54 pthread_mutex_t video_mutex;
55 pthread_cond_t video_cond;
64 SDL_Surface *sdl_screen;
65 SDL_Overlay *sdl_overlay;
71 /** Forward references to static functions.
74 static int consumer_start( mlt_consumer parent );
75 static int consumer_stop( mlt_consumer parent );
76 static int consumer_is_stopped( mlt_consumer parent );
77 static void consumer_close( mlt_consumer parent );
78 static void *consumer_thread( void * );
79 static int consumer_get_dimensions( int *width, int *height );
80 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
82 /** This is what will be called by the factory - anything can be passed in
83 via the argument, but keep it simple.
86 mlt_consumer consumer_sdl_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
88 // Create the consumer object
89 consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
91 // If no malloc'd and consumer init ok
92 if ( this != NULL && mlt_consumer_init( &this->parent, this, profile ) == 0 )
95 this->queue = mlt_deque_init( );
97 // Get the parent consumer object
98 mlt_consumer parent = &this->parent;
100 // We have stuff to clean up, so override the close method
101 parent->close = consumer_close;
103 // get a handle on properties
104 mlt_service service = MLT_CONSUMER_SERVICE( parent );
105 this->properties = MLT_SERVICE_PROPERTIES( service );
107 // Set the default volume
108 mlt_properties_set_double( this->properties, "volume", 1.0 );
110 // This is the initialisation of the consumer
111 pthread_mutex_init( &this->audio_mutex, NULL );
112 pthread_cond_init( &this->audio_cond, NULL);
113 pthread_mutex_init( &this->video_mutex, NULL );
114 pthread_cond_init( &this->video_cond, NULL);
116 // Default scaler (for now we'll use nearest)
117 mlt_properties_set( this->properties, "rescale", "nearest" );
119 // Default buffer for low latency
120 mlt_properties_set_int( this->properties, "buffer", 1 );
122 // Default audio buffer
123 mlt_properties_set_int( this->properties, "audio_buffer", 512 );
125 // Ensure we don't join on a non-running object
128 // process actual param
129 if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
131 this->width = mlt_properties_get_int( this->properties, "width" );
132 this->height = mlt_properties_get_int( this->properties, "height" );
136 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
138 // Allow thread to be started/stopped
139 parent->start = consumer_start;
140 parent->stop = consumer_stop;
141 parent->is_stopped = consumer_is_stopped;
143 // Register specific events
144 mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
146 // Return the consumer produced
150 // malloc or consumer init failed
157 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
159 if ( listener != NULL )
160 listener( owner, this, ( SDL_Event * )args[ 0 ] );
163 int consumer_start( mlt_consumer parent )
165 consumer_sdl this = parent->child;
167 if ( !this->running )
169 int video_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "video_off" );
170 int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
171 int display_off = video_off | preview_off;
172 int audio_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" );
173 int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
175 consumer_stop( parent );
180 if ( mlt_properties_get_int( this->properties, "width" ) > 0 )
181 this->width = mlt_properties_get_int( this->properties, "width" );
182 if ( mlt_properties_get_int( this->properties, "height" ) > 0 )
183 this->height = mlt_properties_get_int( this->properties, "height" );
185 this->bpp = mlt_properties_get_int( this->properties, "bpp" );
187 if ( sdl_started == 0 && display_off == 0 )
189 if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
191 mlt_log_error( MLT_CONSUMER_SERVICE(parent), "Failed to initialize SDL: %s\n", SDL_GetError() );
195 SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
196 SDL_EnableUNICODE( 1 );
199 // Get the wm structure
201 SDL_VERSION( &wm.version );
203 if ( SDL_GetWMInfo( &wm ) == 1 && wm.subsystem == SDL_SYSWM_X11 )
205 // Set the x11_display property for use by VDPAU
206 mlt_properties_set_int( this->properties, "x11_display", (int) wm.info.x11.display );
207 mlt_log_verbose( MLT_CONSUMER_SERVICE(parent), "X11 Display = %p\n", wm.info.x11.display );
209 sprintf( tmp, "%p", wm.info.x11.display );
210 mlt_environment_set( "x11_display", tmp );
214 else if ( display_off == 0 )
216 this->sdl_screen = SDL_GetVideoSurface( );
219 if ( audio_off == 0 )
220 SDL_InitSubSystem( SDL_INIT_AUDIO );
222 // Default window size
223 double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
224 this->window_width = ( double )this->height * display_ratio;
225 this->window_height = this->height;
227 if ( this->sdl_screen == NULL && display_off == 0 )
229 if ( mlt_properties_get_int( this->properties, "fullscreen" ) )
231 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
232 this->window_width = vi->current_w;
233 this->window_height = vi->current_h;
234 this->sdl_flags |= SDL_FULLSCREEN;
235 SDL_ShowCursor( SDL_DISABLE );
237 pthread_mutex_lock( &mlt_sdl_mutex );
238 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
239 pthread_mutex_unlock( &mlt_sdl_mutex );
242 pthread_create( &this->thread, NULL, consumer_thread, this );
248 int consumer_stop( mlt_consumer parent )
250 // Get the actual object
251 consumer_sdl this = parent->child;
253 if ( this->joined == 0 )
255 // Kill the thread and clean up
259 pthread_join( this->thread, NULL );
262 if ( this->sdl_overlay != NULL )
263 SDL_FreeYUVOverlay( this->sdl_overlay );
264 this->sdl_overlay = NULL;
266 if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" ) )
268 pthread_mutex_lock( &this->audio_mutex );
269 pthread_cond_broadcast( &this->audio_cond );
270 pthread_mutex_unlock( &this->audio_mutex );
271 SDL_QuitSubSystem( SDL_INIT_AUDIO );
274 this->sdl_screen = NULL;
280 int consumer_is_stopped( mlt_consumer parent )
282 consumer_sdl this = parent->child;
283 return !this->running;
286 static int sdl_lock_display( )
288 pthread_mutex_lock( &mlt_sdl_mutex );
289 SDL_Surface *screen = SDL_GetVideoSurface( );
290 int result = screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
291 pthread_mutex_unlock( &mlt_sdl_mutex );
295 static void sdl_unlock_display( )
297 pthread_mutex_lock( &mlt_sdl_mutex );
298 SDL_Surface *screen = SDL_GetVideoSurface( );
299 if ( screen != NULL && SDL_MUSTLOCK( screen ) )
300 SDL_UnlockSurface( screen );
301 pthread_mutex_unlock( &mlt_sdl_mutex );
304 static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
306 consumer_sdl this = udata;
309 double volume = mlt_properties_get_double( this->properties, "volume" );
311 pthread_mutex_lock( &this->audio_mutex );
313 // Block until audio received
314 while ( this->running && len > this->audio_avail )
315 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
317 if ( this->audio_avail >= len )
319 // Place in the audio buffer
321 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
323 memcpy( stream, this->audio_buffer, len );
325 // Remove len from the audio available
326 this->audio_avail -= len;
328 // Remove the samples
329 memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
333 // Just to be safe, wipe the stream first
334 memset( stream, 0, len );
337 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
340 this->audio_avail = 0;
343 // We're definitely playing now
346 pthread_cond_broadcast( &this->audio_cond );
347 pthread_mutex_unlock( &this->audio_mutex );
350 static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
352 // Get the properties of this consumer
353 mlt_properties properties = this->properties;
354 mlt_audio_format afmt = mlt_audio_s16;
356 // Set the preferred params of the test card signal
357 int channels = mlt_properties_get_int( properties, "channels" );
358 int dest_channels = channels;
359 int frequency = mlt_properties_get_int( properties, "frequency" );
360 static int counter = 0;
362 int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
367 mlt_frame_get_audio( frame, (void**) &pcm, &afmt, &frequency, &channels, &samples );
368 *duration = ( ( samples * 1000 ) / frequency );
369 pcm += mlt_properties_get_int( properties, "audio_offset" );
371 if ( mlt_properties_get_int( properties, "audio_off" ) )
378 if ( init_audio == 1 )
380 SDL_AudioSpec request;
383 int audio_buffer = mlt_properties_get_int( properties, "audio_buffer" );
385 // specify audio format
386 memset( &request, 0, sizeof( SDL_AudioSpec ) );
388 request.freq = frequency;
389 request.format = AUDIO_S16SYS;
390 request.channels = dest_channels;
391 request.samples = audio_buffer;
392 request.callback = sdl_fill_audio;
393 request.userdata = (void *)this;
394 if ( SDL_OpenAudio( &request, &got ) != 0 )
396 mlt_log_error( MLT_CONSUMER_SERVICE( this ), "SDL failed to open audio: %s\n", SDL_GetError() );
399 else if ( got.size != 0 )
406 if ( init_audio == 0 )
408 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
410 bytes = samples * dest_channels * sizeof(*pcm);
411 pthread_mutex_lock( &this->audio_mutex );
412 while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
413 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
416 if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
418 if ( channels == dest_channels )
420 memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
424 int16_t *dest = (int16_t*) &this->audio_buffer[ this->audio_avail ];
429 memcpy( dest, pcm, dest_channels * sizeof(*pcm) );
431 dest += dest_channels;
437 memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
439 this->audio_avail += bytes;
441 pthread_cond_broadcast( &this->audio_cond );
442 pthread_mutex_unlock( &this->audio_mutex );
452 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
454 // Get the properties of this consumer
455 mlt_properties properties = this->properties;
457 mlt_image_format vfmt = mlt_image_yuv422;
458 int width = this->width, height = this->height;
462 int video_off = mlt_properties_get_int( properties, "video_off" );
463 int preview_off = mlt_properties_get_int( properties, "preview_off" );
464 mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
465 int display_off = video_off | preview_off;
467 if ( this->running && display_off == 0 )
469 // Get the image, width and height
470 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
471 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
472 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
475 if ( this->sdl_screen != NULL )
480 pthread_mutex_lock( &mlt_sdl_mutex );
481 changed = consumer_get_dimensions( &this->window_width, &this->window_height );
482 pthread_mutex_unlock( &mlt_sdl_mutex );
483 sdl_unlock_display( );
485 while ( SDL_PollEvent( &event ) )
487 mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
491 case SDL_VIDEORESIZE:
492 this->window_width = event.resize.w;
493 this->window_height = event.resize.h;
501 mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
502 char keyboard[ 2 ] = " ";
503 void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
504 if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
506 keyboard[ 0 ] = ( char )event.key.keysym.unicode;
507 callback( producer, keyboard );
517 if ( width != this->width || height != this->height )
519 if ( this->sdl_overlay != NULL )
520 SDL_FreeYUVOverlay( this->sdl_overlay );
521 this->sdl_overlay = NULL;
524 if ( this->running && ( this->sdl_screen == NULL || changed ) )
526 // Force an overlay recreation
527 if ( this->sdl_overlay != NULL )
528 SDL_FreeYUVOverlay( this->sdl_overlay );
529 this->sdl_overlay = NULL;
531 // open SDL window with video overlay, if possible
532 pthread_mutex_lock( &mlt_sdl_mutex );
533 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
534 if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
535 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
536 pthread_mutex_unlock( &mlt_sdl_mutex );
538 uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
539 SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
540 SDL_Flip( this->sdl_screen );
545 // Determine window's new display aspect ratio
546 double this_aspect = ( double )this->window_width / this->window_height;
548 // Get the display aspect ratio
549 double display_ratio = mlt_properties_get_double( properties, "display_ratio" );
551 // Determine frame's display aspect ratio
552 double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
554 // Store the width and height received
556 this->height = height;
558 // If using hardware scaler
559 if ( mlt_properties_get( properties, "rescale" ) != NULL &&
560 !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
562 // Use hardware scaler to normalise display aspect ratio
563 this->rect.w = frame_aspect / this_aspect * this->window_width;
564 this->rect.h = this->window_height;
565 if ( this->rect.w > this->window_width )
567 this->rect.w = this->window_width;
568 this->rect.h = this_aspect / frame_aspect * this->window_height;
571 // Special case optimisation to negate odd effect of sample aspect ratio
572 // not corresponding exactly with image resolution.
573 else if ( (int)( this_aspect * 1000 ) == (int)( display_ratio * 1000 ) )
575 this->rect.w = this->window_width;
576 this->rect.h = this->window_height;
578 // Use hardware scaler to normalise sample aspect ratio
579 else if ( this->window_height * display_ratio > this->window_width )
581 this->rect.w = this->window_width;
582 this->rect.h = this->window_width / display_ratio;
586 this->rect.w = this->window_height * display_ratio;
587 this->rect.h = this->window_height;
590 this->rect.x = ( this->window_width - this->rect.w ) / 2;
591 this->rect.y = ( this->window_height - this->rect.h ) / 2;
592 this->rect.x -= this->rect.x % 2;
594 mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
595 mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
596 mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
597 mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
599 SDL_SetClipRect( this->sdl_screen, &this->rect );
602 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay == NULL )
604 SDL_SetClipRect( this->sdl_screen, &this->rect );
605 this->sdl_overlay = SDL_CreateYUVOverlay( width, height, SDL_YUY2_OVERLAY, this->sdl_screen );
608 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay != NULL )
610 this->buffer = this->sdl_overlay->pixels[ 0 ];
611 if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
614 memcpy( this->buffer, image, width * height * 2 );
615 SDL_UnlockYUVOverlay( this->sdl_overlay );
616 SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
620 sdl_unlock_display();
622 else if ( this->running )
624 vfmt = preview_format == mlt_image_none ? mlt_image_rgb24a : preview_format;
626 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
627 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
628 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
634 static void *video_thread( void *arg )
637 consumer_sdl this = arg;
639 // Obtain time of thread start
644 mlt_frame next = NULL;
645 mlt_properties properties = NULL;
648 // Get real time flag
649 int real_time = mlt_properties_get_int( this->properties, "real_time" );
651 // Get the current time
652 gettimeofday( &now, NULL );
654 // Determine start time
655 start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
657 while ( this->running )
659 // Pop the next frame
660 pthread_mutex_lock( &this->video_mutex );
661 next = mlt_deque_pop_front( this->queue );
662 while ( next == NULL && this->running )
664 pthread_cond_wait( &this->video_cond, &this->video_mutex );
665 next = mlt_deque_pop_front( this->queue );
667 pthread_mutex_unlock( &this->video_mutex );
669 if ( !this->running || next == NULL ) break;
671 // Get the properties
672 properties = MLT_FRAME_PROPERTIES( next );
674 // Get the speed of the frame
675 speed = mlt_properties_get_double( properties, "_speed" );
677 // Get the current time
678 gettimeofday( &now, NULL );
680 // Get the elapsed time
681 elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
683 // See if we have to delay the display of the current frame
684 if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
686 // Obtain the scheduled playout time
687 int64_t scheduled = mlt_properties_get_int( properties, "playtime" );
689 // Determine the difference between the elapsed time and the scheduled playout time
690 int64_t difference = scheduled - elapsed;
692 // Smooth playback a bit
693 if ( real_time && ( difference > 20000 && speed == 1.0 ) )
695 tm.tv_sec = difference / 1000000;
696 tm.tv_nsec = ( difference % 1000000 ) * 500;
697 nanosleep( &tm, NULL );
700 // Show current frame if not too old
701 if ( !real_time || ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 ) )
702 consumer_play_video( this, next );
704 // If the queue is empty, recalculate start to allow build up again
705 if ( real_time && ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 ) )
707 gettimeofday( &now, NULL );
708 start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
713 mlt_log_debug( MLT_CONSUMER_SERVICE(&this->parent), "dropped video frame\n" );
716 // This frame can now be closed
717 mlt_frame_close( next );
722 mlt_frame_close( next );
724 mlt_consumer_stopped( &this->parent );
729 /** Threaded wrapper for pipe.
732 static void *consumer_thread( void *arg )
735 consumer_sdl this = arg;
738 mlt_consumer consumer = &this->parent;
740 // Convenience functionality
741 int terminate_on_pause = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "terminate_on_pause" );
747 // internal intialization
750 mlt_frame frame = NULL;
751 mlt_properties properties = NULL;
753 int64_t playtime = 0;
754 struct timespec tm = { 0, 100000 };
756 // Loop until told not to
757 while( !terminated && this->running )
759 // Get a frame from the attached producer
760 frame = mlt_consumer_rt_frame( consumer );
762 // Check for termination
763 if ( terminate_on_pause && frame != NULL )
764 terminated = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" ) == 0.0;
766 // Ensure that we have a frame
769 // Get the frame properties
770 properties = MLT_FRAME_PROPERTIES( frame );
773 init_audio = consumer_play_audio( this, frame, init_audio, &duration );
775 // Determine the start time now
776 if ( this->playing && init_video )
778 // Create the video thread
779 pthread_create( &thread, NULL, video_thread, this );
781 // Video doesn't need to be initialised any more
785 // Set playtime for this frame
786 mlt_properties_set_int( properties, "playtime", playtime );
788 while ( this->running && mlt_deque_count( this->queue ) > 15 )
789 nanosleep( &tm, NULL );
791 // Push this frame to the back of the queue
792 pthread_mutex_lock( &this->video_mutex );
793 mlt_deque_push_back( this->queue, frame );
794 pthread_cond_broadcast( &this->video_cond );
795 pthread_mutex_unlock( &this->video_mutex );
797 // Calculate the next playtime
798 playtime += ( duration * 1000 );
804 // Kill the video thread
805 if ( init_video == 0 )
807 pthread_mutex_lock( &this->video_mutex );
808 pthread_cond_broadcast( &this->video_cond );
809 pthread_mutex_unlock( &this->video_mutex );
810 pthread_join( thread, NULL );
813 while( mlt_deque_count( this->queue ) )
814 mlt_frame_close( mlt_deque_pop_back( this->queue ) );
816 this->sdl_screen = NULL;
817 this->audio_avail = 0;
822 static int consumer_get_dimensions( int *width, int *height )
826 // SDL windows manager structure
829 // Specify the SDL Version
830 SDL_VERSION( &wm.version );
833 //sdl_lock_display();
836 // Get the wm structure
837 if ( SDL_GetWMInfo( &wm ) == 1 )
839 // Check that we have the X11 wm
840 if ( wm.subsystem == SDL_SYSWM_X11 )
842 // Get the SDL window
843 Window window = wm.info.x11.window;
845 // Get the display session
846 Display *display = wm.info.x11.display;
848 // Get the window attributes
849 XWindowAttributes attr;
850 XGetWindowAttributes( display, window, &attr );
852 // Determine whether window has changed
853 changed = *width != attr.width || *height != attr.height;
855 // Return width and height
857 *height = attr.height;
862 // Unlock the display
863 //sdl_unlock_display();
868 /** Callback to allow override of the close method.
871 static void consumer_close( mlt_consumer parent )
873 // Get the actual object
874 consumer_sdl this = parent->child;
875 int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
878 ///mlt_consumer_stop( parent );
880 // Now clean up the rest
881 mlt_consumer_close( parent );
884 mlt_deque_close( this->queue );
887 pthread_mutex_destroy( &this->audio_mutex );
888 pthread_cond_destroy( &this->audio_cond );
890 if ( sdl_started == 0 )
892 pthread_mutex_lock( &mlt_sdl_mutex );
894 pthread_mutex_unlock( &mlt_sdl_mutex );
897 // Finally clean up this