2 * filter_watermark.c -- watermark filter
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "filter_watermark.h"
23 #include <framework/mlt_factory.h>
24 #include <framework/mlt_frame.h>
25 #include <framework/mlt_producer.h>
26 #include <framework/mlt_transition.h>
34 static int filter_get_image( mlt_frame
this, uint8_t **image
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
37 mlt_filter filter
= mlt_frame_pop_service( this );
38 mlt_properties properties
= mlt_filter_properties( filter
);
39 mlt_producer producer
= mlt_properties_get_data( properties
, "producer", NULL
);
40 mlt_transition composite
= mlt_properties_get_data( properties
, "composite", NULL
);
42 if ( composite
== NULL
)
44 composite
= mlt_factory_transition( "composite", NULL
);
45 if ( composite
!= NULL
)
47 mlt_properties composite_properties
= mlt_transition_properties( composite
);
48 mlt_properties_pass( composite_properties
, properties
, "composite." );
49 mlt_properties_set_data( properties
, "composite", composite
, 0, ( mlt_destructor
)mlt_transition_close
, NULL
);
53 if ( producer
== NULL
)
55 char *resource
= mlt_properties_get( properties
, "resource" );
56 char *factory
= mlt_properties_get( properties
, "factory" );
57 producer
= mlt_factory_producer( factory
, resource
);
58 if ( producer
!= NULL
)
60 mlt_properties producer_properties
= mlt_producer_properties( producer
);
61 mlt_properties_set( producer_properties
, "eof", "loop" );
62 mlt_properties_pass( producer_properties
, properties
, "producer." );
63 mlt_properties_set_data( properties
, "producer", producer
, 0, ( mlt_destructor
)mlt_producer_close
, NULL
);
67 if ( composite
!= NULL
&& producer
!= NULL
)
69 mlt_service service
= mlt_producer_service( producer
);
70 mlt_frame b_frame
= NULL
;
72 if ( mlt_service_get_frame( service
, &b_frame
, 0 ) == 0 )
73 mlt_transition_process( composite
, this, b_frame
);
75 error
= mlt_frame_get_image( this, image
, format
, width
, height
, 1 );
77 mlt_frame_close( b_frame
);
81 error
= mlt_frame_get_image( this, image
, format
, width
, height
, 1 );
87 /** Filter processing.
90 static mlt_frame
filter_process( mlt_filter
this, mlt_frame frame
)
92 // Push the filter on to the stack
93 mlt_frame_push_service( frame
, this );
95 // Push the get_image on to the stack
96 mlt_frame_push_get_image( frame
, filter_get_image
);
101 /** Constructor for the filter.
104 mlt_filter
filter_watermark_init( void *arg
)
106 mlt_filter
this = mlt_filter_new( );
109 mlt_properties properties
= mlt_filter_properties( this );
110 this->process
= filter_process
;
111 mlt_properties_set( properties
, "factory", "fezzik" );
113 mlt_properties_set( properties
, "resource", arg
);