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641 lines
18 KiB
641 lines
18 KiB
/*
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* consumer_sdl_still.c -- A Simple DirectMedia Layer consumer
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Charles Yates
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "consumer_sdl.h"
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#include <framework/mlt_frame.h>
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#include <framework/mlt_deque.h>
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#include <framework/mlt_factory.h>
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#include <framework/mlt_filter.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <SDL/SDL.h>
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#include <SDL/SDL_syswm.h>
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#include <sys/time.h>
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/** This classes definition.
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*/
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typedef struct consumer_sdl_s *consumer_sdl;
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struct consumer_sdl_s
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{
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struct mlt_consumer_s parent;
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mlt_properties properties;
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pthread_t thread;
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int joined;
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int running;
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int window_width;
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int window_height;
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int width;
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int height;
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int playing;
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int sdl_flags;
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SDL_Surface *sdl_screen;
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SDL_Rect rect;
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uint8_t *buffer;
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int last_position;
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mlt_producer last_producer;
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int filtered;
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};
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/** Forward references to static functions.
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*/
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static int consumer_start( mlt_consumer parent );
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static int consumer_stop( mlt_consumer parent );
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static int consumer_is_stopped( mlt_consumer parent );
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static void consumer_close( mlt_consumer parent );
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static void *consumer_thread( void * );
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static int consumer_get_dimensions( int *width, int *height );
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static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
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/** This is what will be called by the factory - anything can be passed in
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via the argument, but keep it simple.
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*/
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mlt_consumer consumer_sdl_still_init( char *arg )
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{
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// Create the consumer object
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consumer_sdl this = calloc( sizeof( struct consumer_sdl_s ), 1 );
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// If no malloc'd and consumer init ok
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if ( this != NULL && mlt_consumer_init( &this->parent, this ) == 0 )
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{
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// Get the parent consumer object
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mlt_consumer parent = &this->parent;
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// get a handle on properties
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mlt_service service = MLT_CONSUMER_SERVICE( parent );
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this->properties = MLT_SERVICE_PROPERTIES( service );
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// We have stuff to clean up, so override the close method
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parent->close = consumer_close;
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// Default scaler (for now we'll use nearest)
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mlt_properties_set( this->properties, "rescale", "nearest" );
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// We're always going to run this in non-realtime mode
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mlt_properties_set( this->properties, "real_time", "0" );
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// Default progressive true
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mlt_properties_set_int( this->properties, "progressive", 1 );
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// Ensure we don't join on a non-running object
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this->joined = 1;
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// process actual param
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if ( arg == NULL || sscanf( arg, "%dx%d", &this->width, &this->height ) != 2 )
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{
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this->width = mlt_properties_get_int( this->properties, "width" );
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this->height = mlt_properties_get_int( this->properties, "height" );
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}
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else
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{
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mlt_properties_set_int( this->properties, "width", this->width );
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mlt_properties_set_int( this->properties, "height", this->height );
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}
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// Set the sdl flags
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this->sdl_flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_RESIZABLE | SDL_DOUBLEBUF;
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// Allow thread to be started/stopped
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parent->start = consumer_start;
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parent->stop = consumer_stop;
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parent->is_stopped = consumer_is_stopped;
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// Register specific events
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mlt_events_register( this->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
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// Return the consumer produced
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return parent;
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}
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// malloc or consumer init failed
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free( this );
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// Indicate failure
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return NULL;
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}
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static void consumer_sdl_event( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
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{
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if ( listener != NULL )
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listener( owner, this, ( SDL_Event * )args[ 0 ] );
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}
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static int consumer_start( mlt_consumer parent )
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{
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consumer_sdl this = parent->child;
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if ( !this->running )
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{
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int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
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int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
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// Attach a colour space converter
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if ( !this->filtered )
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{
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mlt_filter filter = mlt_factory_filter( "avcolour_space", NULL );
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mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "forced", mlt_image_yuv422 );
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mlt_service_attach( MLT_CONSUMER_SERVICE( parent ), filter );
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mlt_filter_close( filter );
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this->filtered = 1;
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}
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consumer_stop( parent );
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this->last_position = -1;
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this->running = 1;
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this->joined = 0;
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// Allow the user to force resizing to window size
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this->width = mlt_properties_get_int( this->properties, "width" );
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this->height = mlt_properties_get_int( this->properties, "height" );
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// Default window size
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double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
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this->window_width = ( double )this->height * display_ratio;
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this->window_height = this->height;
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if ( sdl_started == 0 && preview_off == 0 )
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{
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if ( SDL_Init( SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE ) < 0 )
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{
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fprintf( stderr, "Failed to initialize SDL: %s\n", SDL_GetError() );
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return -1;
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}
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SDL_EnableKeyRepeat( SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL );
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SDL_EnableUNICODE( 1 );
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}
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else if ( preview_off == 0 )
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{
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if ( SDL_GetVideoSurface( ) != NULL )
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{
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this->sdl_screen = SDL_GetVideoSurface( );
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}
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}
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if ( this->sdl_screen == NULL && preview_off == 0 )
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this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
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pthread_create( &this->thread, NULL, consumer_thread, this );
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}
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return 0;
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}
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static int consumer_stop( mlt_consumer parent )
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{
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// Get the actual object
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consumer_sdl this = parent->child;
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if ( this->joined == 0 )
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{
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int preview_off = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "preview_off" );
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int sdl_started = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( parent ), "sdl_started" );
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// Kill the thread and clean up
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this->running = 0;
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pthread_join( this->thread, NULL );
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this->joined = 1;
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if ( sdl_started == 0 && preview_off == 0 )
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SDL_Quit( );
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this->sdl_screen = NULL;
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}
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return 0;
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}
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static int consumer_is_stopped( mlt_consumer parent )
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{
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consumer_sdl this = parent->child;
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return !this->running;
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}
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static int sdl_lock_display( )
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{
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SDL_Surface *screen = SDL_GetVideoSurface( );
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return screen != NULL && ( !SDL_MUSTLOCK( screen ) || SDL_LockSurface( screen ) >= 0 );
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}
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static void sdl_unlock_display( )
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{
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SDL_Surface *screen = SDL_GetVideoSurface( );
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if ( screen != NULL && SDL_MUSTLOCK( screen ) )
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SDL_UnlockSurface( screen );
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}
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static inline void display_1( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
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{
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// Generate the affine transform scaling values
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int scale_width = ( width << 16 ) / rect.w;
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int scale_height = ( height << 16 ) / rect.h;
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int stride = width * 3;
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int x, y, row_index;
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uint8_t *q, *row;
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// Constants defined for clarity and optimisation
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int scanlength = screen->pitch;
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uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
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uint8_t *p;
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// Iterate through the screen using a very basic scaling algorithm
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for ( y = 0; y < rect.h; y ++ )
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{
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p = start;
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row_index = ( 32768 + scale_height * y ) >> 16;
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row = image + stride * row_index;
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for ( x = 0; x < rect.w; x ++ )
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{
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q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
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*p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
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}
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start += scanlength;
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}
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}
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static inline void display_2( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
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{
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// Generate the affine transform scaling values
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int scale_width = ( width << 16 ) / rect.w;
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int scale_height = ( height << 16 ) / rect.h;
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int stride = width * 3;
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int x, y, row_index;
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uint8_t *q, *row;
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// Constants defined for clarity and optimisation
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int scanlength = screen->pitch / 2;
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uint16_t *start = ( uint16_t * )screen->pixels + rect.y * scanlength + rect.x;
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uint16_t *p;
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// Iterate through the screen using a very basic scaling algorithm
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for ( y = 0; y < rect.h; y ++ )
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{
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p = start;
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row_index = ( 32768 + scale_height * y ) >> 16;
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row = image + stride * row_index;
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for ( x = 0; x < rect.w; x ++ )
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{
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q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
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*p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
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}
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start += scanlength;
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}
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}
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static inline void display_3( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
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{
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// Generate the affine transform scaling values
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int scale_width = ( width << 16 ) / rect.w;
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int scale_height = ( height << 16 ) / rect.h;
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int stride = width * 3;
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int x, y, row_index;
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uint8_t *q, *row;
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// Constants defined for clarity and optimisation
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int scanlength = screen->pitch;
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uint8_t *start = ( uint8_t * )screen->pixels + rect.y * scanlength + rect.x;
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uint8_t *p;
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uint32_t pixel;
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// Iterate through the screen using a very basic scaling algorithm
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for ( y = 0; y < rect.h; y ++ )
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{
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p = start;
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row_index = ( 32768 + scale_height * y ) >> 16;
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row = image + stride * row_index;
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for ( x = 0; x < rect.w; x ++ )
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{
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q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
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pixel = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
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*p ++ = (pixel & 0xFF0000) >> 16;
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*p ++ = (pixel & 0x00FF00) >> 8;
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*p ++ = (pixel & 0x0000FF);
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}
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start += scanlength;
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}
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}
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static inline void display_4( SDL_Surface *screen, SDL_Rect rect, uint8_t *image, int width, int height )
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{
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// Generate the affine transform scaling values
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int scale_width = ( width << 16 ) / rect.w;
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int scale_height = ( height << 16 ) / rect.h;
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int stride = width * 3;
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int x, y, row_index;
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uint8_t *q, *row;
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// Constants defined for clarity and optimisation
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int scanlength = screen->pitch / 4;
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uint32_t *start = ( uint32_t * )screen->pixels + rect.y * scanlength + rect.x;
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uint32_t *p;
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// Iterate through the screen using a very basic scaling algorithm
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for ( y = 0; y < rect.h; y ++ )
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{
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p = start;
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row_index = ( 32768 + scale_height * y ) >> 16;
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row = image + stride * row_index;
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for ( x = 0; x < rect.w; x ++ )
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{
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q = row + ( ( ( 32768 + scale_width * x ) >> 16 ) * 3 );
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*p ++ = SDL_MapRGB( screen->format, *q, *( q + 1 ), *( q + 2 ) );
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}
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start += scanlength;
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}
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}
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static int consumer_play_video( consumer_sdl this, mlt_frame frame )
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{
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// Get the properties of this consumer
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mlt_properties properties = this->properties;
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mlt_image_format vfmt = mlt_image_rgb24;
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int height = this->height;
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int width = this->width;
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uint8_t *image = NULL;
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int changed = 0;
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double display_ratio = mlt_properties_get_double( this->properties, "display_ratio" );
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void ( *lock )( void ) = mlt_properties_get_data( properties, "app_lock", NULL );
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void ( *unlock )( void ) = mlt_properties_get_data( properties, "app_unlock", NULL );
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if ( lock != NULL ) lock( );
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sdl_lock_display();
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// Handle events
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if ( this->sdl_screen != NULL )
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{
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SDL_Event event;
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changed = consumer_get_dimensions( &this->window_width, &this->window_height );
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while ( SDL_PollEvent( &event ) )
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{
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mlt_events_fire( this->properties, "consumer-sdl-event", &event, NULL );
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switch( event.type )
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{
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case SDL_VIDEORESIZE:
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this->window_width = event.resize.w;
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this->window_height = event.resize.h;
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changed = 1;
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break;
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case SDL_QUIT:
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this->running = 0;
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break;
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case SDL_KEYDOWN:
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{
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mlt_producer producer = mlt_properties_get_data( properties, "transport_producer", NULL );
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char keyboard[ 2 ] = " ";
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void (*callback)( mlt_producer, char * ) = mlt_properties_get_data( properties, "transport_callback", NULL );
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if ( callback != NULL && producer != NULL && event.key.keysym.unicode < 0x80 && event.key.keysym.unicode > 0 )
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{
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keyboard[ 0 ] = ( char )event.key.keysym.unicode;
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callback( producer, keyboard );
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}
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}
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break;
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}
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}
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}
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if ( this->sdl_screen == NULL || changed )
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{
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// open SDL window
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this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
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if ( consumer_get_dimensions( &this->window_width, &this->window_height ) )
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this->sdl_screen = SDL_SetVideoMode( this->window_width, this->window_height, 0, this->sdl_flags );
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changed = 1;
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}
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else
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{
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changed = 1;
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}
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if ( changed == 0 &&
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this->last_position == mlt_frame_get_position( frame ) &&
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this->last_producer == mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL ) )
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{
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sdl_unlock_display( );
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if ( unlock != NULL ) unlock( );
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return 0;
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}
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// Update last frame shown info
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this->last_position = mlt_frame_get_position( frame );
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this->last_producer = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "_producer", NULL );
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// Get the image, width and height
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mlt_frame_get_image( frame, &image, &vfmt, &width, &height, 0 );
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mlt_events_fire( properties, "consumer-frame-show", frame, NULL );
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if ( image != NULL )
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{
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char *rescale = mlt_properties_get( properties, "rescale" );
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if ( rescale != NULL && strcmp( rescale, "none" ) )
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{
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double this_aspect = display_ratio / ( ( double )this->window_width / ( double )this->window_height );
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this->rect.w = this_aspect * this->window_width;
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this->rect.h = this->window_height;
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if ( this->rect.w > this->window_width )
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{
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this->rect.w = this->window_width;
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this->rect.h = ( 1.0 / this_aspect ) * this->window_height;
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}
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}
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else
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{
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double frame_aspect = mlt_frame_get_aspect_ratio( frame ) * width / height;
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this->rect.w = frame_aspect * this->window_height;
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this->rect.h = this->window_height;
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if ( this->rect.w > this->window_width )
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{
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this->rect.w = this->window_width;
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this->rect.h = ( 1.0 / frame_aspect ) * this->window_width;
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}
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}
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this->rect.x = ( this->window_width - this->rect.w ) / 2;
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this->rect.y = ( this->window_height - this->rect.h ) / 2;
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mlt_properties_set_int( this->properties, "rect_x", this->rect.x );
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mlt_properties_set_int( this->properties, "rect_y", this->rect.y );
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mlt_properties_set_int( this->properties, "rect_w", this->rect.w );
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mlt_properties_set_int( this->properties, "rect_h", this->rect.h );
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}
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if ( !mlt_consumer_is_stopped( &this->parent ) && SDL_GetVideoSurface( ) != NULL && this->sdl_screen != NULL && this->sdl_screen->pixels != NULL )
|
|
{
|
|
memset( this->sdl_screen->pixels, 0, this->window_width * this->window_height * this->sdl_screen->format->BytesPerPixel );
|
|
|
|
switch( this->sdl_screen->format->BytesPerPixel )
|
|
{
|
|
case 1:
|
|
display_1( this->sdl_screen, this->rect, image, width, height );
|
|
break;
|
|
case 2:
|
|
display_2( this->sdl_screen, this->rect, image, width, height );
|
|
break;
|
|
case 3:
|
|
display_3( this->sdl_screen, this->rect, image, width, height );
|
|
break;
|
|
case 4:
|
|
display_4( this->sdl_screen, this->rect, image, width, height );
|
|
break;
|
|
default:
|
|
fprintf( stderr, "Unsupported video depth %d\n", this->sdl_screen->format->BytesPerPixel );
|
|
break;
|
|
}
|
|
|
|
// Flip it into sight
|
|
SDL_Flip( this->sdl_screen );
|
|
}
|
|
|
|
sdl_unlock_display();
|
|
|
|
if ( unlock != NULL ) unlock( );
|
|
|
|
return 1;
|
|
}
|
|
|
|
/** 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;
|
|
mlt_properties properties = MLT_CONSUMER_PROPERTIES( consumer );
|
|
|
|
// internal intialization
|
|
mlt_frame frame = NULL;
|
|
mlt_image_format vfmt = mlt_image_rgb24a;
|
|
int height = this->height;
|
|
int width = this->width;
|
|
uint8_t *image = NULL;
|
|
|
|
// Allow the hosting app to provide the preview
|
|
int preview_off = mlt_properties_get_int( properties, "preview_off" );
|
|
mlt_image_format preview_format = mlt_properties_get_int( properties, "preview_format" );
|
|
|
|
// Check if a specific colour space has been requested
|
|
if ( preview_off && preview_format != mlt_image_none )
|
|
vfmt = preview_format;
|
|
|
|
// Loop until told not to
|
|
while( this->running )
|
|
{
|
|
// Get a frame from the attached producer
|
|
frame = mlt_consumer_rt_frame( consumer );
|
|
|
|
// Ensure that we have a frame
|
|
if ( this->running && frame != NULL )
|
|
{
|
|
if ( preview_off == 0 )
|
|
{
|
|
consumer_play_video( this, frame );
|
|
}
|
|
else
|
|
{
|
|
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 );
|
|
}
|
|
mlt_frame_close( frame );
|
|
}
|
|
else
|
|
{
|
|
if ( frame ) mlt_frame_close( frame );
|
|
this->running = 0;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int consumer_get_dimensions( int *width, int *height )
|
|
{
|
|
int changed = 0;
|
|
|
|
// SDL windows manager structure
|
|
SDL_SysWMinfo wm;
|
|
|
|
// Specify the SDL Version
|
|
SDL_VERSION( &wm.version );
|
|
|
|
// Get the wm structure
|
|
if ( SDL_GetWMInfo( &wm ) == 1 )
|
|
{
|
|
#ifndef __DARWIN__
|
|
// Check that we have the X11 wm
|
|
if ( wm.subsystem == SDL_SYSWM_X11 )
|
|
{
|
|
// Get the SDL window
|
|
Window window = wm.info.x11.window;
|
|
|
|
// Get the display session
|
|
Display *display = wm.info.x11.display;
|
|
|
|
// Get the window attributes
|
|
XWindowAttributes attr;
|
|
XGetWindowAttributes( display, window, &attr );
|
|
|
|
// Determine whether window has changed
|
|
changed = *width != attr.width || *height != attr.height;
|
|
|
|
// Return width and height
|
|
*width = attr.width;
|
|
*height = attr.height;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
/** Callback to allow override of the close method.
|
|
*/
|
|
|
|
static void consumer_close( mlt_consumer parent )
|
|
{
|
|
// Get the actual object
|
|
consumer_sdl this = parent->child;
|
|
|
|
// Stop the consumer
|
|
mlt_consumer_stop( parent );
|
|
|
|
// Now clean up the rest
|
|
mlt_consumer_close( parent );
|
|
|
|
// Finally clean up this
|
|
free( this );
|
|
}
|