Merge ../mlt
[melted] / src / modules / sdl / consumer_sdl.c
index 84daf73..9870e44 100644 (file)
@@ -3,24 +3,26 @@
  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
  * Author: Dan Dennedy <dan@dennedy.org>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include "consumer_sdl.h"
+#include <framework/mlt_consumer.h>
 #include <framework/mlt_frame.h>
 #include <framework/mlt_deque.h>
+#include <framework/mlt_factory.h>
+#include <framework/mlt_filter.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -40,15 +42,18 @@ struct consumer_sdl_s
        mlt_properties properties;
        mlt_deque queue;
        pthread_t thread;
+       int joined;
        int running;
-       uint8_t audio_buffer[ 4096 * 19 ];
+       uint8_t audio_buffer[ 4096 * 10 ];
        int audio_avail;
        pthread_mutex_t audio_mutex;
        pthread_cond_t audio_cond;
+       pthread_mutex_t video_mutex;
+       pthread_cond_t video_cond;
        int window_width;
        int window_height;
-       float aspect_ratio;
-       float display_aspect;
+       int previous_width;
+       int previous_height;
        int width;
        int height;
        int playing;
@@ -57,6 +62,8 @@ struct consumer_sdl_s
        SDL_Overlay *sdl_overlay;
        SDL_Rect rect;
        uint8_t *buffer;
+       int bpp;
+       int filtered;
 };
 
 /** Forward references to static functions.
@@ -68,18 +75,19 @@ static int consumer_is_stopped( mlt_consumer parent );
 static void consumer_close( mlt_consumer parent );
 static void *consumer_thread( void * );
 static int consumer_get_dimensions( int *width, int *height );
+static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
 
 /** This is what will be called by the factory - anything can be passed in
        via the argument, but keep it simple.
 */
 
-mlt_consumer consumer_sdl_init( char *arg )
+mlt_consumer consumer_sdl_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 {
        // Create the consumer object
        consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
 
        // If no malloc'd and consumer init ok
-       if ( this != NULL && mlt_consumer_init( &this->parent, this ) == 0 )
+       if ( this != NULL && mlt_consumer_init( &this->parent, this, profile ) == 0 )
        {
                // Create the queue
                this->queue = mlt_deque_init( );
@@ -91,8 +99,8 @@ mlt_consumer consumer_sdl_init( char *arg )
                parent->close = consumer_close;
 
                // get a handle on properties
-               mlt_service service = mlt_consumer_service( parent );
-               this->properties = mlt_service_properties( service );
+               mlt_service service = MLT_CONSUMER_SERVICE( parent );
+               this->properties = MLT_SERVICE_PROPERTIES( service );
 
                // Set the default volume
                mlt_properties_set_double( this->properties, "volume", 1.0 );
@@ -100,6 +108,8 @@ mlt_consumer consumer_sdl_init( char *arg )
                // This is the initialisation of the consumer
                pthread_mutex_init( &this->audio_mutex, NULL );
                pthread_cond_init( &this->audio_cond, NULL);
+               pthread_mutex_init( &this->video_mutex, NULL );
+               pthread_cond_init( &this->video_cond, NULL);
                
                // Default scaler (for now we'll use nearest)
                mlt_properties_set( this->properties, "rescale", "nearest" );
@@ -111,38 +121,16 @@ mlt_consumer consumer_sdl_init( char *arg )
                mlt_properties_set_int( this->properties, "progressive", 0 );
 
                // Default audio buffer
-               mlt_properties_set_int( this->properties, "audio_buffer", 1024 );
+               mlt_properties_set_int( this->properties, "audio_buffer", 512 );
 
-               // Get sample aspect ratio
-               this->aspect_ratio = mlt_properties_get_double( this->properties, "aspect_ratio" );
-               
-               // Default display aspect ratio
-               this->display_aspect = 4.0 / 3.0;
+               // Ensure we don't join on a non-running object
+               this->joined = 1;
                
                // process actual param
                if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
                {
                        this->width = mlt_properties_get_int( this->properties, "width" );
                        this->height = mlt_properties_get_int( this->properties, "height" );
-                       
-                       // Default window size
-                       this->window_width = ( float )this->height * this->display_aspect + 0.5;
-                       this->window_height = this->height;
-               }
-               else
-               {
-                       if ( (int)( ( float )this->width / this->height * 1000 ) != 
-                                (int)( this->display_aspect * 1000 ) ) 
-                       {
-                               // Override these
-                               this->display_aspect = ( float )this->width / this->height;
-                               this->aspect_ratio = 1.0;
-                               mlt_properties_set_double( this->properties, "aspect_ratio", this->aspect_ratio );
-                       }
-                       
-                       // Set window size
-                       this->window_width = this->width;
-                       this->window_height = this->height;
                }
 
                // Set the sdl flags
@@ -153,6 +141,9 @@ mlt_consumer consumer_sdl_init( char *arg )
                parent->stop = consumer_stop;
                parent->is_stopped = consumer_is_stopped;
 
+               // Register specific events
+               mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
+
                // Return the consumer produced
                return parent;
        }
@@ -164,28 +155,88 @@ mlt_consumer consumer_sdl_init( char *arg )
        return NULL;
 }
 
+static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
+{
+       if ( listener != NULL )
+               listener( owner, this, ( SDL_Event * )args[ 0 ] );
+}
+
 int consumer_start( mlt_consumer parent )
 {
        consumer_sdl this = parent->child;
 
        if ( !this->running )
        {
-               pthread_attr_t thread_attributes;
-               
+               int video_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "video_off" );
+               int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
+               int display_off = video_off | preview_off;
+               int audio_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" );
+               int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
+
+               consumer_stop( parent );
+
                this->running = 1;
+               this->joined = 0;
+
+               if ( mlt_properties_get_int( this->properties, "width" ) > 0 )
+                       this->width = mlt_properties_get_int( this->properties, "width" );
+               if ( mlt_properties_get_int( this->properties, "height" ) > 0 )
+                       this->height = mlt_properties_get_int( this->properties, "height" );
+
+               this->bpp = mlt_properties_get_int( this->properties, "bpp" );
 
-               // Allow the user to force resizing to window size
-               if ( mlt_properties_get_int( this->properties, "resize" ) )
+               // Attach a colour space converter
+               if ( preview_off && !this->filtered )
                {
-                       mlt_properties_set_int( this->properties, "width", this->width );
-                       mlt_properties_set_int( this->properties, "height", this->height );
+                       mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( parent ) );
+                       mlt_filter filter = mlt_factory_filter( profile, "avcolour_space", NULL );
+                       if ( filter )
+                       {
+                               mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "forced", mlt_image_yuv422 );
+                               mlt_service_attach( MLT_CONSUMER_SERVICE( parent ), filter );
+                               mlt_filter_close( filter );
+                       }
+                       this->filtered = 1;
                }
-
-               // Inherit the scheduling priority
-               pthread_attr_init( &thread_attributes );
-               pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
        
-               pthread_create( &this->thread, &thread_attributes, consumer_thread, this );
+               if ( sdl_started == 0 && display_off == 0 )
+               {
+                       if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
+                       {
+                               fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
+                               return -1;
+                       }
+
+                       SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
+                       SDL_EnableUNICODE( 1 );
+               }
+               else if ( display_off == 0 )
+               {
+                       this->sdl_screen = SDL_GetVideoSurface( );
+               }
+
+               if ( audio_off == 0 )
+                       SDL_InitSubSystem( SDL_INIT_AUDIO );
+
+               // Default window size
+               double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
+               this->window_width = ( double )this->height * display_ratio;
+               this->window_height = this->height;
+
+               if ( this->sdl_screen == NULL && display_off == 0 )
+               {
+                       if ( mlt_properties_get_int( this->properties, "fullscreen" ) )
+                       {
+                               const SDL_VideoInfo *vi = SDL_GetVideoInfo();
+                               this->window_width = vi->current_w;
+                               this->window_height = vi->current_h;
+                               this->sdl_flags |= SDL_FULLSCREEN;
+                               SDL_ShowCursor( SDL_DISABLE );
+                       }
+                       this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
+               }
+
+               pthread_create( &this->thread, NULL, consumer_thread, this );
        }
 
        return 0;
@@ -196,16 +247,31 @@ int consumer_stop( mlt_consumer parent )
        // Get the actual object
        consumer_sdl this = parent->child;
 
-       if ( this->running )
+       if ( this->joined == 0 )
        {
                // Kill the thread and clean up
+               this->joined = 1;
                this->running = 0;
+               if ( this->thread )
+                       pthread_join( this->thread, NULL );
 
-               pthread_mutex_lock( &this->audio_mutex );
-               pthread_cond_broadcast( &this->audio_cond );
-               pthread_mutex_unlock( &this->audio_mutex );
+               // internal cleanup
+               if ( this->sdl_overlay != NULL )
+                       SDL_FreeYUVOverlay( this->sdl_overlay );
+               this->sdl_overlay = NULL;
+
+               if ( !mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "audio_off" ) )
+               {
+                       pthread_mutex_lock( &this->audio_mutex );
+                       pthread_cond_broadcast( &this->audio_cond );
+                       pthread_mutex_unlock( &this->audio_mutex );
+                       SDL_QuitSubSystem( SDL_INIT_AUDIO );
+               }
+
+               if ( mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" ) == 0 )
+                       SDL_Quit( );
 
-               pthread_join( this->thread, NULL );
+               this->sdl_screen = NULL;
        }
 
        return 0;
@@ -235,7 +301,7 @@ static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
        consumer_sdl this = udata;
 
        // Get the volume
-       float volume = mlt_properties_get_double( this->properties, "volume" );
+       double volume = mlt_properties_get_double( this->properties, "volume" );
 
        pthread_mutex_lock( &this->audio_mutex );
 
@@ -246,7 +312,10 @@ static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
        if ( this->audio_avail >= len )
        {
                // Place in the audio buffer
-               memcpy( stream, this->audio_buffer, len );
+               if ( volume != 1.0 )
+                       SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
+               else
+                       memcpy( stream, this->audio_buffer, len );
 
                // Remove len from the audio available
                this->audio_avail -= len;
@@ -259,11 +328,8 @@ static void sdl_fill_audio( void *udata, uint8_t *stream, int len )
                // Just to be safe, wipe the stream first
                memset( stream, 0, len );
 
-               // Copy what we have into the stream
-               memcpy( stream, this->audio_buffer, this->audio_avail );
-
                // Mix the audio 
-               SDL_MixAudio( stream, stream, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
+               SDL_MixAudio( stream, this->audio_buffer, len, ( int )( ( float )SDL_MIX_MAXVOLUME * volume ) );
 
                // No audio left
                this->audio_avail = 0;
@@ -313,7 +379,7 @@ static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_aud
                memset( &request, 0, sizeof( SDL_AudioSpec ) );
                this->playing = 0;
                request.freq = frequency;
-               request.format = AUDIO_S16;
+               request.format = AUDIO_S16SYS;
                request.channels = channels;
                request.samples = audio_buffer;
                request.callback = sdl_fill_audio;
@@ -332,16 +398,19 @@ static int consumer_play_audio( consumer_sdl this, mlt_frame frame, int init_aud
 
        if ( init_audio == 0 )
        {
-               mlt_properties properties = mlt_frame_properties( frame );
+               mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
                bytes = ( samples * channels * 2 );
                pthread_mutex_lock( &this->audio_mutex );
-               while ( bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
+               while ( this->running && bytes > ( sizeof( this->audio_buffer) - this->audio_avail ) )
                        pthread_cond_wait( &this->audio_cond, &this->audio_mutex );
-               if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
-                       memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
-               else
-                       memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
-               this->audio_avail += bytes;
+               if ( this->running )
+               {
+                       if ( mlt_properties_get_double( properties, "_speed" ) == 1 )
+                               memcpy( &this->audio_buffer[ this->audio_avail ], pcm, bytes );
+                       else
+                               memset( &this->audio_buffer[ this->audio_avail ], 0, bytes );
+                       this->audio_avail += bytes;
+               }
                pthread_cond_broadcast( &this->audio_cond );
                pthread_mutex_unlock( &this->audio_mutex );
        }
@@ -363,20 +432,31 @@ static int consumer_play_video( consumer_sdl this, mlt_frame frame )
        uint8_t *image;
        int changed = 0;
 
-       if ( mlt_properties_get_int( properties, "video_off" ) == 0 )
+       int video_off = mlt_properties_get_int( properties, "video_off" );
+       int preview_off = mlt_properties_get_int( properties, "preview_off" );
+       mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
+       int display_off = video_off | preview_off;
+
+       if ( this->running && display_off == 0 )
        {
                // Get the image, width and height
                mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
+               mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
+               mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
                
                // Handle events
                if ( this->sdl_screen != NULL )
                {
                        SDL_Event event;
        
+                       sdl_lock_display( );
                        changed = consumer_get_dimensions( &this->window_width, &this->window_height );
-       
+                       sdl_unlock_display( );
+
                        while ( SDL_PollEvent( &event ) )
                        {
+                               mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
+
                                switch( event.type )
                                {
                                        case SDL_VIDEORESIZE:
@@ -403,94 +483,98 @@ static int consumer_play_video( consumer_sdl this, mlt_frame frame )
                        }
                }
        
+               sdl_lock_display();
+
                if ( width != this->width || height != this->height )
                {
-                       this->width = width;
-                       this->height = height;
-                       changed = 1;
+                       if ( this->sdl_overlay != NULL )
+                               SDL_FreeYUVOverlay( this->sdl_overlay );
+                       this->sdl_overlay = NULL;
                }
 
-               if ( this->sdl_screen == NULL || changed )
+               if ( this->running && ( this->sdl_screen == NULL || changed ) )
+               {
+                       // Force an overlay recreation
+                       if ( this->sdl_overlay != NULL )
+                               SDL_FreeYUVOverlay( this->sdl_overlay );
+                       this->sdl_overlay = NULL;
+
+                       // open SDL window with video overlay, if possible
+                       this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
+                       if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
+                               this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, this->bpp, this->sdl_flags );
+
+                       uint32_t color = mlt_properties_get_int( this->properties, "window_background" );
+                       SDL_FillRect( this->sdl_screen, NULL, color >> 8 );
+                       SDL_Flip( this->sdl_screen );
+               }
+
+               if ( this->running )
                {
-                       // Determine frame's display aspect ratio
-                       float frame_aspect = mlt_frame_get_aspect_ratio( frame ) * this->width / this->height;
-                       
                        // Determine window's new display aspect ratio
-                       float this_aspect = ( float )this->window_width / this->window_height;
+                       double this_aspect = ( double )this->window_width / this->window_height;
+
+                       // Get the display aspect ratio
+                       double display_ratio = mlt_properties_get_double( properties, "display_ratio" );
+
+                       // Determine frame's display aspect ratio
+                       double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
+
+                       // Store the width and height received
+                       this->width = width;
+                       this->height = height;
 
                        // If using hardware scaler
                        if ( mlt_properties_get( properties, "rescale" ) != NULL &&
                                !strcmp( mlt_properties_get( properties, "rescale" ), "none" ) )
                        {
-                               // Special case optimisation to negate odd effect of sample aspect ratio
-                               // not corresponding exactly with image resolution.
-                               if ( ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) ) && 
-                                        ( (int)( mlt_frame_get_aspect_ratio( frame ) * 1000 ) == (int)( this->aspect_ratio * 1000 ) ) )
+                               // Use hardware scaler to normalise display aspect ratio
+                               this->rect.w = frame_aspect / this_aspect * this->window_width;
+                               this->rect.h = this->window_height;
+                               if ( this->rect.w > this->window_width )
                                {
                                        this->rect.w = this->window_width;
-                                       this->rect.h = this->window_height;
-                               }
-                               else
-                               {
-                                       // Use hardware scaler to normalise display aspect ratio
-                                       this->rect.w = frame_aspect / this_aspect * this->window_width + 0.5;
-                                       this->rect.h = this->window_height;
-                                       if ( this->rect.w > this->window_width )
-                                       {
-                                               this->rect.w = this->window_width;
-                                               this->rect.h = this_aspect / frame_aspect * this->window_height + 0.5;
-                                       }
+                                       this->rect.h = this_aspect / frame_aspect * this->window_height;
                                }
                        }
                        // Special case optimisation to negate odd effect of sample aspect ratio
                        // not corresponding exactly with image resolution.
-                       else if ( (int)( this_aspect * 1000 ) == (int)( this->display_aspect * 1000 ) ) 
+                       else if ( (int)( this_aspect * 1000 ) == (int)( display_ratio * 1000 ) ) 
                        {
                                this->rect.w = this->window_width;
                                this->rect.h = this->window_height;
                        }
                        // Use hardware scaler to normalise sample aspect ratio
-                       else if ( this->window_height * frame_aspect > this->window_width )
+                       else if ( this->window_height * display_ratio > this->window_width )
                        {
                                this->rect.w = this->window_width;
-                               this->rect.h = this->window_width / frame_aspect + 0.5;
+                               this->rect.h = this->window_width / display_ratio;
                        }
                        else
                        {
-                               this->rect.w = this->window_height * frame_aspect + 0.5;
+                               this->rect.w = this->window_height * display_ratio;
                                this->rect.h = this->window_height;
                        }
                        
                        this->rect.x = ( this->window_width - this->rect.w ) / 2;
                        this->rect.y = ( this->window_height - this->rect.h ) / 2;
-                       
-                       // Force an overlay recreation
-                       if ( this->sdl_overlay != NULL )
-                               SDL_FreeYUVOverlay( this->sdl_overlay );
+                       this->rect.x -= this->rect.x % 2;
 
-                       // open SDL window with video overlay, if possible
-                       this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
+                       mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
+                       mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
+                       mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
+                       mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
 
-                       if ( this->sdl_screen != NULL )
-                       {
-                               SDL_SetClipRect( this->sdl_screen, &this->rect );
-                               sdl_lock_display();
-                               this->sdl_overlay = SDL_CreateYUVOverlay( this->width, this->height, SDL_YUY2_OVERLAY, this->sdl_screen );
-                               sdl_unlock_display();
-                       }
+                       SDL_SetClipRect( this->sdl_screen, &this->rect );
                }
-                       
-               if ( mlt_properties_get_int( properties, "changed" ) )
+
+               if ( this->running && this->sdl_screen != NULL && this->sdl_overlay == NULL )
                {
-                       sdl_lock_display();
-                       this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
                        SDL_SetClipRect( this->sdl_screen, &this->rect );
-                       SDL_Flip( this->sdl_screen );
-                       sdl_unlock_display();
-                       mlt_properties_set_int( properties, "changed", 0 );
+                       this->sdl_overlay = SDL_CreateYUVOverlay( width, height, SDL_YUY2_OVERLAY, this->sdl_screen );
                }
 
-               if ( this->sdl_screen != NULL && this->sdl_overlay != NULL )
+               if ( this->running && this->sdl_screen != NULL && this->sdl_overlay != NULL )
                {
                        this->buffer = this->sdl_overlay->pixels[ 0 ];
                        if ( SDL_LockYUVOverlay( this->sdl_overlay ) >= 0 )
@@ -502,143 +586,199 @@ static int consumer_play_video( consumer_sdl this, mlt_frame frame )
                        }
                }
 
+               sdl_unlock_display();
+       }
+       else if ( this->running )
+       {
+               vfmt = preview_format == mlt_image_none ? mlt_image_rgb24a : preview_format;
+               if ( !video_off )
+                       mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
+               mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "format", vfmt );
+               mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
        }
 
        return 0;
 }
 
-/** Threaded wrapper for pipe.
-*/
-
-static void *consumer_thread( void *arg )
+static void *video_thread( void *arg )
 {
        // Identify the arg
        consumer_sdl this = arg;
 
-       // Get the consumer
-       mlt_consumer consumer = &this->parent;
-
-       // internal intialization
-       int init_audio = 1;
-
        // Obtain time of thread start
        struct timeval now;
        int64_t start = 0;
        int64_t elapsed = 0;
-       int duration = 0;
-       int64_t playtime = 0;
        struct timespec tm;
        mlt_frame next = NULL;
-       mlt_frame frame = NULL;
        mlt_properties properties = NULL;
+       double speed = 0;
 
-       if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_NOPARACHUTE ) < 0 )
+       // Get real time flag
+       int real_time = mlt_properties_get_int( this->properties, "real_time" );
+
+       // Get the current time
+       gettimeofday( &now, NULL );
+
+       // Determine start time
+       start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
+
+       while ( this->running )
        {
-               fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
-               return NULL;
+               // Pop the next frame
+               pthread_mutex_lock( &this->video_mutex );
+               next = mlt_deque_pop_front( this->queue );
+               while ( next == NULL && this->running )
+               {
+                       pthread_cond_wait( &this->video_cond, &this->video_mutex );
+                       next = mlt_deque_pop_front( this->queue );
+               }
+               pthread_mutex_unlock( &this->video_mutex );
+
+               if ( !this->running || next == NULL ) break;
+
+               // Get the properties
+               properties =  MLT_FRAME_PROPERTIES( next );
+
+               // Get the speed of the frame
+               speed = mlt_properties_get_double( properties, "_speed" );
+
+               // Get the current time
+               gettimeofday( &now, NULL );
+
+               // Get the elapsed time
+               elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
+
+               // See if we have to delay the display of the current frame
+               if ( mlt_properties_get_int( properties, "rendered" ) == 1 && this->running )
+               {
+                       // Obtain the scheduled playout time
+                       int64_t scheduled = mlt_properties_get_int( properties, "playtime" );
+
+                       // Determine the difference between the elapsed time and the scheduled playout time
+                       int64_t difference = scheduled - elapsed;
+
+                       // Smooth playback a bit
+                       if ( real_time && ( difference > 20000 && speed == 1.0 ) )
+                       {
+                               tm.tv_sec = difference / 1000000;
+                               tm.tv_nsec = ( difference % 1000000 ) * 500;
+                               nanosleep( &tm, NULL );
+                       }
+
+                       // Show current frame if not too old
+                       if ( !real_time || ( difference > -10000 || speed != 1.0 || mlt_deque_count( this->queue ) < 2 ) )
+                               consumer_play_video( this, next );
+
+                       // If the queue is empty, recalculate start to allow build up again
+                       if ( real_time && ( mlt_deque_count( this->queue ) == 0 && speed == 1.0 ) )
+                       {
+                               gettimeofday( &now, NULL );
+                               start = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - scheduled + 20000;
+                       }
+               }
+
+               // This frame can now be closed
+               mlt_frame_close( next );
+               next = NULL;
        }
 
-       SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
-       SDL_EnableUNICODE( 1 );
+       if ( next != NULL )
+               mlt_frame_close( next );
+
+       mlt_consumer_stopped( &this->parent );
+
+       return NULL;
+}
+
+/** Threaded wrapper for pipe.
+*/
+
+static void *consumer_thread( void *arg )
+{
+       // Identify the arg
+       consumer_sdl this = arg;
+
+       // Get the consumer
+       mlt_consumer consumer = &this->parent;
+
+       // Convenience functionality
+       int terminate_on_pause = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( consumer ), "terminate_on_pause" );
+       int terminated = 0;
+
+       // Video thread
+       pthread_t thread;
+
+       // internal intialization
+       int init_audio = 1;
+       int init_video = 1;
+       mlt_frame frame = NULL;
+       mlt_properties properties = NULL;
+       int duration = 0;
+       int64_t playtime = 0;
+       struct timespec tm = { 0, 100000 };
 
        // Loop until told not to
-       while( this->running )
+       while( !terminated && this->running )
        {
                // Get a frame from the attached producer
                frame = mlt_consumer_rt_frame( consumer );
 
+               // Check for termination
+               if ( terminate_on_pause && frame != NULL )
+                       terminated = mlt_properties_get_double( MLT_FRAME_PROPERTIES( frame ), "_speed" ) == 0.0;
+
                // Ensure that we have a frame
                if ( frame != NULL )
                {
                        // Get the frame properties
-                       properties =  mlt_frame_properties( frame );
+                       properties =  MLT_FRAME_PROPERTIES( frame );
 
                        // Play audio
                        init_audio = consumer_play_audio( this, frame, init_audio, &duration );
 
                        // Determine the start time now
-                       if ( this->playing && start == 0 )
+                       if ( this->playing && init_video )
                        {
-                               // Get the current time
-                               gettimeofday( &now, NULL );
+                               // Create the video thread
+                               pthread_create( &thread, NULL, video_thread, this );
 
-                               // Determine start time
-                               start = ( int64_t )now.tv_sec * 1000000 + now.tv_usec;
+                               // Video doesn't need to be initialised any more
+                               init_video = 0;
                        }
 
                        // Set playtime for this frame
-                       mlt_properties_set_position( properties, "playtime", playtime );
+                       mlt_properties_set_int( properties, "playtime", playtime );
+
+                       while ( this->running && mlt_deque_count( this->queue ) > 15 )
+                               nanosleep( &tm, NULL );
 
                        // Push this frame to the back of the queue
+                       pthread_mutex_lock( &this->video_mutex );
                        mlt_deque_push_back( this->queue, frame );
+                       pthread_cond_broadcast( &this->video_cond );
+                       pthread_mutex_unlock( &this->video_mutex );
 
                        // Calculate the next playtime
                        playtime += ( duration * 1000 );
                }
+       }
 
-               // Pop the next frame
-               next = mlt_deque_pop_front( this->queue );
-
-               while ( next != NULL && this->playing )
-               {
-                       // Get the properties
-                       properties =  mlt_frame_properties( next );
-
-                       // Get the current time
-                       gettimeofday( &now, NULL );
-
-                       // Get the elapsed time
-                       elapsed = ( ( int64_t )now.tv_sec * 1000000 + now.tv_usec ) - start;
-
-                       // See if we have to delay the display of the current frame
-                       if ( mlt_properties_get_int( properties, "rendered" ) == 1 )
-                       {
-                               // Obtain the scheduled playout time
-                               mlt_position scheduled = mlt_properties_get_position( properties, "playtime" );
-
-                               // Determine the difference between the elapsed time and the scheduled playout time
-                               mlt_position difference = scheduled - elapsed;
-
-                               // If the frame is quite some way in the future, go get another
-                               if ( difference >= 30000 && mlt_deque_count( this->queue ) < 10 )
-                                       break;
-
-                               // Smooth playback a bit
-                               if ( difference > 20000 && mlt_properties_get_double( properties, "_speed" ) == 1.0 )
-                               {
-                                       tm.tv_sec = difference / 1000000;
-                                       tm.tv_nsec = ( difference % 1000000 ) * 1000;
-                                       nanosleep( &tm, NULL );
-                               }
-
-                               // Show current frame if not too old
-                               if ( difference > -10000 || mlt_properties_get_double( properties, "_speed" ) != 1.0 )
-                                       consumer_play_video( this, next );
-                               else
-                                       start = start - difference;
-                       }
-
-                       // This is an unrendered frame - just close it
-                       mlt_frame_close( next );
-
-                       // Pop the next frame
-                       next = mlt_deque_pop_front( this->queue );
-               }
+       this->running = 0;
 
-               if ( next != NULL )
-                       mlt_deque_push_front( this->queue, next );
+       // Kill the video thread
+       if ( init_video == 0 )
+       {
+               pthread_mutex_lock( &this->video_mutex );
+               pthread_cond_broadcast( &this->video_cond );
+               pthread_mutex_unlock( &this->video_mutex );
+               pthread_join( thread, NULL );
        }
 
-       // internal cleanup
-       if ( this->sdl_overlay != NULL )
-               SDL_FreeYUVOverlay( this->sdl_overlay );
-       SDL_Quit( );
-
        while( mlt_deque_count( this->queue ) )
                mlt_frame_close( mlt_deque_pop_back( this->queue ) );
 
        this->sdl_screen = NULL;
-       this->sdl_overlay = NULL;
        this->audio_avail = 0;
 
        return NULL;
@@ -654,6 +794,10 @@ static int consumer_get_dimensions( int *width, int *height )
        // Specify the SDL Version
        SDL_VERSION( &wm.version );
 
+       // Lock the display
+       //sdl_lock_display();
+
+#ifndef __DARWIN__
        // Get the wm structure
        if ( SDL_GetWMInfo( &wm ) == 1 )
        {
@@ -678,6 +822,10 @@ static int consumer_get_dimensions( int *width, int *height )
                        *height = attr.height;
                }
        }
+#endif
+
+       // Unlock the display
+       //sdl_unlock_display();
 
        return changed;
 }
@@ -691,7 +839,10 @@ static void consumer_close( mlt_consumer parent )
        consumer_sdl this = parent->child;
 
        // Stop the consumer
-       mlt_consumer_stop( parent );
+       ///mlt_consumer_stop( parent );
+
+       // Now clean up the rest
+       mlt_consumer_close( parent );
 
        // Close the queue
        mlt_deque_close( this->queue );
@@ -700,9 +851,6 @@ static void consumer_close( mlt_consumer parent )
        pthread_mutex_destroy( &this->audio_mutex );
        pthread_cond_destroy( &this->audio_cond );
                
-       // Now clean up the rest
-       mlt_consumer_close( parent );
-
        // Finally clean up this
        free( this );
 }