2 * consumer_sdl.c -- A Simple DirectMedia Layer consumer
3 * Copyright (C) 2003-2004, 2010 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_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( 1, sizeof( struct consumer_sdl_s ) );
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", 2048 );
127 // Ensure we don't join on a non-running object
130 // process actual param
131 if ( arg && sscanf( arg, "%dx%d", &this->width, &this->height ) )
133 mlt_properties_set_int( this->properties, "_arg_size", 1 );
137 this->width = mlt_properties_get_int( this->properties, "width" );
138 this->height = mlt_properties_get_int( this->properties, "height" );
142 this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_DOUBLEBUF;
143 #if !defined(__DARWIN__)
144 this->sdl_flags |= SDL_RESIZABLE;
146 // Allow thread to be started/stopped
147 parent->start = consumer_start;
148 parent->stop = consumer_stop;
149 parent->is_stopped = consumer_is_stopped;
151 // Register specific events
152 mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
154 // Return the consumer produced
158 // malloc or consumer init failed
165 static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
167 if ( listener != NULL )
168 listener( owner, this, ( SDL_Event * )args[ 0 ] );
171 int consumer_start( mlt_consumer parent )
173 consumer_sdl this = parent->child;
175 if ( !this->running )
177 mlt_properties properties = MLT_CONSUMER_PROPERTIES( parent );
178 int video_off = mlt_properties_get_int( properties, "video_off" );
179 int preview_off = mlt_properties_get_int( properties, "preview_off" );
180 int display_off = video_off | preview_off;
181 int audio_off = mlt_properties_get_int( properties, "audio_off" );
182 int sdl_started = mlt_properties_get_int( properties, "sdl_started" );
183 char *output_display = mlt_properties_get( properties, "output_display" );
184 char *window_id = mlt_properties_get( properties, "window_id" );
185 char *audio_driver = mlt_properties_get( properties, "audio_driver" );
186 char *video_driver = mlt_properties_get( properties, "video_driver" );
187 char *audio_device = mlt_properties_get( properties, "audio_device" );
189 consumer_stop( parent );
194 if ( output_display != NULL )
195 setenv( "DISPLAY", output_display, 1 );
197 if ( window_id != NULL )
198 setenv( "SDL_WINDOWID", window_id, 1 );
200 if ( video_driver != NULL )
201 setenv( "SDL_VIDEODRIVER", video_driver, 1 );
203 if ( audio_driver != NULL )
204 setenv( "SDL_AUDIODRIVER", audio_driver, 1 );
206 if ( audio_device != NULL )
207 setenv( "AUDIODEV", audio_device, 1 );
209 if ( ! mlt_properties_get_int( this->properties, "_arg_size" ) )
211 if ( mlt_properties_get_int( this->properties, "width" ) > 0 )
212 this->width = mlt_properties_get_int( this->properties, "width" );
213 if ( mlt_properties_get_int( this->properties, "height" ) > 0 )
214 this->height = mlt_properties_get_int( this->properties, "height" );
217 this->bpp = mlt_properties_get_int( this->properties, "bpp" );
219 if ( sdl_started == 0 && display_off == 0 )
221 pthread_mutex_lock( &mlt_sdl_mutex );
222 int ret = SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE );
223 pthread_mutex_unlock( &mlt_sdl_mutex );
226 mlt_log_error( MLT_CONSUMER_SERVICE(parent), "Failed to initialize SDL: %s\n", SDL_GetError() );
230 SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
231 SDL_EnableUNICODE( 1 );
233 else if ( display_off == 0 )
235 pthread_mutex_lock( &mlt_sdl_mutex );
236 this->sdl_screen = SDL_GetVideoSurface( );
237 pthread_mutex_unlock( &mlt_sdl_mutex );
240 if ( audio_off == 0 )
241 SDL_InitSubSystem( SDL_INIT_AUDIO );
243 // Default window size
244 if ( mlt_properties_get_int( this->properties, "_arg_size" ) )
246 this->window_width = this->width;
247 this->window_height = this->height;
251 double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
252 this->window_width = ( double )this->height * display_ratio + 0.5;
253 this->window_height = this->height;
256 if ( this->sdl_screen == NULL && display_off == 0 )
258 if ( mlt_properties_get_int( this->properties, "fullscreen" ) )
260 const SDL_VideoInfo *vi;
261 pthread_mutex_lock( &mlt_sdl_mutex );
262 vi = SDL_GetVideoInfo();
263 pthread_mutex_unlock( &mlt_sdl_mutex );
264 this->window_width = vi->current_w;
265 this->window_height = vi->current_h;
266 this->sdl_flags |= SDL_FULLSCREEN;
267 SDL_ShowCursor( SDL_DISABLE );
269 pthread_mutex_lock( &mlt_sdl_mutex );
270 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
271 pthread_mutex_unlock( &mlt_sdl_mutex );
274 pthread_create( &this->thread, NULL, consumer_thread, this );
280 int consumer_stop( mlt_consumer parent )
282 // Get the actual object
283 consumer_sdl this = parent->child;
285 if ( this->joined == 0 )
287 // Kill the thread and clean up
293 pthread_join( this->thread, NULL );
296 if ( this->sdl_overlay != NULL )
297 SDL_FreeYUVOverlay( this->sdl_overlay );
298 this->sdl_overlay = NULL;
300 if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" ) )
302 pthread_mutex_lock( &this->audio_mutex );
303 pthread_cond_broadcast( &this->audio_cond );
304 pthread_mutex_unlock( &this->audio_mutex );
305 SDL_QuitSubSystem( SDL_INIT_AUDIO );
308 if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" ) == 0 )
310 pthread_mutex_lock( &mlt_sdl_mutex );
312 pthread_mutex_unlock( &mlt_sdl_mutex );
315 this->sdl_screen = NULL;
321 int consumer_is_stopped( mlt_consumer parent )
323 consumer_sdl this = parent->child;
324 return !this->running;
327 static int sdl_lock_display( )
329 pthread_mutex_lock( &mlt_sdl_mutex );
330 SDL_Surface *screen = SDL_GetVideoSurface( );
331 int result = screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
332 pthread_mutex_unlock( &mlt_sdl_mutex );
336 static void sdl_unlock_display( )
338 pthread_mutex_lock( &mlt_sdl_mutex );
339 SDL_Surface *screen = SDL_GetVideoSurface( );
340 if ( screen != NULL && SDL_MUSTLOCK( screen ) )
341 SDL_UnlockSurface( screen );
342 pthread_mutex_unlock( &mlt_sdl_mutex );
345 static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
347 consumer_sdl this = udata;
350 double volume = mlt_properties_get_double( this->properties, "volume" );
352 pthread_mutex_lock( &this->audio_mutex );
354 // Block until audio received
355 while ( this->running && len > this->audio_avail )
356 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
358 if ( this->audio_avail >= len )
360 // Place in the audio buffer
362 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
364 memcpy( stream, this->audio_buffer, len );
366 // Remove len from the audio available
367 this->audio_avail -= len;
369 // Remove the samples
370 memmove( this->audio_buffer, this->audio_buffer + len, this->audio_avail );
374 // Just to be safe, wipe the stream first
375 memset( stream, 0, len );
378 SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
381 this->audio_avail = 0;
384 // We're definitely playing now
387 pthread_cond_broadcast( &this->audio_cond );
388 pthread_mutex_unlock( &this->audio_mutex );
391 static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_audio, int *duration )
393 // Get the properties of this consumer
394 mlt_properties properties = this->properties;
395 mlt_audio_format afmt = mlt_audio_s16;
397 // Set the preferred params of the test card signal
398 int channels = mlt_properties_get_int( properties, "channels" );
399 int dest_channels = channels;
400 int frequency = mlt_properties_get_int( properties, "frequency" );
401 static int counter = 0;
403 int samples = mlt_sample_calculator( mlt_properties_get_double( this->properties, "fps" ), frequency, counter++ );
408 mlt_frame_get_audio( frame, (void**) &pcm, &afmt, &frequency, &channels, &samples );
409 *duration = ( ( samples * 1000 ) / frequency );
410 pcm += mlt_properties_get_int( properties, "audio_offset" );
412 if ( mlt_properties_get_int( properties, "audio_off" ) )
419 if ( init_audio == 1 )
421 SDL_AudioSpec request;
424 int audio_buffer = mlt_properties_get_int( properties, "audio_buffer" );
426 // specify audio format
427 memset( &request, 0, sizeof( SDL_AudioSpec ) );
429 request.freq = frequency;
430 request.format = AUDIO_S16SYS;
431 request.channels = dest_channels;
432 request.samples = audio_buffer;
433 request.callback = sdl_fill_audio;
434 request.userdata = (void *)this;
435 if ( SDL_OpenAudio( &request, &got ) != 0 )
437 mlt_log_error( MLT_CONSUMER_SERVICE( this ), "SDL failed to open audio: %s\n", SDL_GetError() );
440 else if ( got.size != 0 )
447 if ( init_audio == 0 )
449 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
451 bytes = samples * dest_channels * sizeof(*pcm);
452 pthread_mutex_lock( &this->audio_mutex );
453 while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
454 pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
457 if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
459 if ( channels == dest_channels )
461 memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
465 int16_t *dest = (int16_t*) &this->audio_buffer[ this->audio_avail ];
470 memcpy( dest, pcm, dest_channels * sizeof(*pcm) );
472 dest += dest_channels;
478 memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
480 this->audio_avail += bytes;
482 pthread_cond_broadcast( &this->audio_cond );
483 pthread_mutex_unlock( &this->audio_mutex );
493 static int consumer_play_video( consumer_sdl this, mlt_frame frame )
495 // Get the properties of this consumer
496 mlt_properties properties = this->properties;
498 mlt_image_format vfmt = mlt_image_yuv422;
499 int width = this->width, height = this->height;
503 int video_off = mlt_properties_get_int( properties, "video_off" );
504 int preview_off = mlt_properties_get_int( properties, "preview_off" );
505 mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
506 int display_off = video_off | preview_off;
508 if ( this->running && display_off == 0 )
510 // Get the image, width and height
511 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
513 void *pool = mlt_cocoa_autorelease_init();
516 if ( this->sdl_screen != NULL )
521 pthread_mutex_lock( &mlt_sdl_mutex );
522 changed = consumer_get_dimensions( &this->window_width, &this->window_height );
523 pthread_mutex_unlock( &mlt_sdl_mutex );
524 sdl_unlock_display( );
526 while ( SDL_PollEvent( &event ) )
528 mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
532 case SDL_VIDEORESIZE:
533 this->window_width = event.resize.w;
534 this->window_height = event.resize.h;
542 mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
543 char keyboard[ 2 ] = " ";
544 void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
545 if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
547 keyboard[ 0 ] = ( char )event.key.keysym.unicode;
548 callback( producer, keyboard );
558 if ( width != this->width || height != this->height )
560 if ( this->sdl_overlay != NULL )
561 SDL_FreeYUVOverlay( this->sdl_overlay );
562 this->sdl_overlay = NULL;
565 if ( this->running && ( this->sdl_screen == NULL || changed ) )
567 // Force an overlay recreation
568 if ( this->sdl_overlay != NULL )
569 SDL_FreeYUVOverlay( this->sdl_overlay );
570 this->sdl_overlay = NULL;
572 // open SDL window with video overlay, if possible
573 pthread_mutex_lock( &mlt_sdl_mutex );
574 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
575 if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
576 this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
577 pthread_mutex_unlock( &mlt_sdl_mutex );
579 uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
580 SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
581 SDL_Flip( this->sdl_screen );
586 // Determine window's new display aspect ratio
587 double this_aspect = ( double )this->window_width / this->window_height;
589 // Get the display aspect ratio
590 double display_ratio = mlt_properties_get_double( properties, "display_ratio" );
592 // Determine frame's display aspect ratio
593 double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
595 // Store the width and height received
597 this->height = height;
599 // If using hardware scaler
600 if ( mlt_properties_get( properties, "rescale" ) != NULL &&
601 !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
603 // Use hardware scaler to normalise display aspect ratio
604 this->rect.w = frame_aspect / this_aspect * this->window_width;
605 this->rect.h = this->window_height;
606 if ( this->rect.w > this->window_width )
608 this->rect.w = this->window_width;
609 this->rect.h = this_aspect / frame_aspect * this->window_height;
612 // Special case optimisation to negate odd effect of sample aspect ratio
613 // not corresponding exactly with image resolution.
614 else if ( (int)( this_aspect * 1000 ) == (int)( display_ratio * 1000 ) )
616 this->rect.w = this->window_width;
617 this->rect.h = this->window_height;
619 // Use hardware scaler to normalise sample aspect ratio
620 else if ( this->window_height * display_ratio > this->window_width )
622 this->rect.w = this->window_width;
623 this->rect.h = this->window_width / display_ratio;
627 this->rect.w = this->window_height * display_ratio;
628 this->rect.h = this->window_height;
631 this->rect.x = ( this->window_width - this->rect.w ) / 2;
632 this->rect.y = ( this->window_height - this->rect.h ) / 2;
633 this->rect.x -= this->rect.x % 2;
635 mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
636 mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
637 mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
638 mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
640 SDL_SetClipRect( this->sdl_screen, &this->rect );
643 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay == NULL )
645 SDL_SetClipRect( this->sdl_screen, &this->rect );
646 this->sdl_overlay = SDL_CreateYUVOverlay( width, height, SDL_YUY2_OVERLAY, this->sdl_screen );
649 if ( this->running && this->sdl_screen != NULL && this->sdl_overlay != NULL )
651 this->buffer = this->sdl_overlay->pixels[ 0 ];
652 if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
655 memcpy( this->buffer, image, width * height * 2 );
656 SDL_UnlockYUVOverlay( this->sdl_overlay );
657 SDL_DisplayYUVOverlay( this->sdl_overlay, &this->sdl_screen->clip_rect );
661 sdl_unlock_display();
662 mlt_cocoa_autorelease_close( pool );
663 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
665 else if ( this->running )
667 vfmt = preview_format == mlt_image_none ? mlt_image_rgb24a : preview_format;
669 mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
670 mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
676 static void *video_thread( void *arg )
679 consumer_sdl this = arg;
681 // Obtain time of thread start
686 mlt_frame next = NULL;
687 mlt_properties properties = NULL;
690 // Get real time flag
691 int real_time = mlt_properties_get_int( this->properties, "real_time" );
693 // Get the current time
694 gettimeofday( &now, NULL );
696 // Determine start time
697 start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
699 while ( this->running )
701 // Pop the next frame
702 pthread_mutex_lock( &this->video_mutex );
703 next = mlt_deque_pop_front( this->queue );
704 while ( next == NULL && this->running )
706 pthread_cond_wait( &this->video_cond, &this->video_mutex );
707 next = mlt_deque_pop_front( this->queue );
709 pthread_mutex_unlock( &this->video_mutex );
711 if ( !this->running || next == NULL ) break;
713 // Get the properties
714 properties = MLT_FRAME_PROPERTIES( next );
716 // Get the speed of the frame
717 speed = mlt_properties_get_double( properties, "_speed" );
719 // Get the current time
720 gettimeofday( &now, NULL );
722 // Get the elapsed time
723 elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
725 // See if we have to delay the display of the current frame
726 if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
728 // Obtain the scheduled playout time
729 int64_t scheduled = mlt_properties_get_int( properties, "playtime" );
731 // Determine the difference between the elapsed time and the scheduled playout time
732 int64_t difference = scheduled - elapsed;
734 // Smooth playback a bit
735 if ( real_time && ( difference > 20000 && speed == 1.0 ) )
737 tm.tv_sec = difference / 1000000;
738 tm.tv_nsec = ( difference % 1000000 ) * 500;
739 nanosleep( &tm, NULL );
742 // Show current frame if not too old
743 if ( !real_time || ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 ) )
744 consumer_play_video( this, next );
746 // If the queue is empty, recalculate start to allow build up again
747 if ( real_time && ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 ) )
749 gettimeofday( &now, NULL );
750 start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
755 static int dropped = 0;
756 mlt_log_info( MLT_CONSUMER_SERVICE(&this->parent), "dropped video frame %d\n", ++dropped );
759 // This frame can now be closed
760 mlt_frame_close( next );
765 mlt_frame_close( next );
767 mlt_consumer_stopped( &this->parent );
772 /** Threaded wrapper for pipe.
775 static void *consumer_thread( void *arg )
778 consumer_sdl this = arg;
781 mlt_consumer consumer = &this->parent;
783 // Convenience functionality
784 int terminate_on_pause = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "terminate_on_pause" );
790 // internal intialization
793 mlt_frame frame = NULL;
795 int64_t playtime = 0;
796 struct timespec tm = { 0, 100000 };
798 // Loop until told not to
799 while( this->running )
801 // Get a frame from the attached producer
802 frame = !terminated? mlt_consumer_rt_frame( consumer ) : NULL;
804 // Check for termination
805 if ( terminate_on_pause && frame )
806 terminated = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" ) == 0.0;
808 // Ensure that we have a frame
812 init_audio = consumer_play_audio( this, frame, init_audio, &duration );
814 // Determine the start time now
815 if ( this->playing && init_video )
817 // Create the video thread
818 pthread_create( &thread, NULL, video_thread, this );
820 // Video doesn't need to be initialised any more
824 // Set playtime for this frame
825 mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "playtime", playtime );
827 while ( this->running && mlt_deque_count( this->queue ) > 15 )
828 nanosleep( &tm, NULL );
830 // Push this frame to the back of the queue
831 pthread_mutex_lock( &this->video_mutex );
832 mlt_deque_push_back( this->queue, frame );
833 pthread_cond_broadcast( &this->video_cond );
834 pthread_mutex_unlock( &this->video_mutex );
836 // Calculate the next playtime
837 playtime += ( duration * 1000 );
839 else if ( terminated )
841 if ( init_video || mlt_deque_count( this->queue ) == 0 )
844 nanosleep( &tm, NULL );
850 // Unblock sdl_preview
851 if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "put_mode" ) == 1 )
853 frame = mlt_consumer_get_frame( consumer );
855 mlt_frame_close( frame );
859 // Kill the video thread
860 if ( init_video == 0 )
862 pthread_mutex_lock( &this->video_mutex );
863 pthread_cond_broadcast( &this->video_cond );
864 pthread_mutex_unlock( &this->video_mutex );
865 pthread_join( thread, NULL );
868 while( mlt_deque_count( this->queue ) )
869 mlt_frame_close( mlt_deque_pop_back( this->queue ) );
871 this->sdl_screen = NULL;
872 this->audio_avail = 0;
877 static int consumer_get_dimensions( int *width, int *height )
881 // SDL windows manager structure
884 // Specify the SDL Version
885 SDL_VERSION( &wm.version );
888 //sdl_lock_display();
891 // Get the wm structure
892 if ( SDL_GetWMInfo( &wm ) == 1 )
895 // Check that we have the X11 wm
896 if ( wm.subsystem == SDL_SYSWM_X11 )
898 // Get the SDL window
899 Window window = wm.info.x11.window;
901 // Get the display session
902 Display *display = wm.info.x11.display;
904 // Get the window attributes
905 XWindowAttributes attr;
906 XGetWindowAttributes( display, window, &attr );
908 // Determine whether window has changed
909 changed = *width != attr.width || *height != attr.height;
911 // Return width and height
913 *height = attr.height;
919 // Unlock the display
920 //sdl_unlock_display();
925 /** Callback to allow override of the close method.
928 static void consumer_close( mlt_consumer parent )
930 // Get the actual object
931 consumer_sdl this = parent->child;
934 ///mlt_consumer_stop( parent );
936 // Now clean up the rest
937 mlt_consumer_close( parent );
940 mlt_deque_close( this->queue );
943 pthread_mutex_destroy( &this->audio_mutex );
944 pthread_cond_destroy( &this->audio_cond );
946 // Finally clean up this