2 * producer_frei0r.c -- frei0r producer
3 * Copyright (c) 2009 Jean-Baptiste Mardelle <jb@kdenlive.org>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <framework/mlt.h>
22 #include "frei0r_helper.h"
27 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
30 // Obtain properties of frame
31 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
33 // Obtain the producer for this frame
34 mlt_producer producer = mlt_properties_get_data( properties, "producer_frei0r", NULL );
36 // Obtain properties of producer
37 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
40 int size = *width * ( *height + 1 ) * 4;
43 *buffer = mlt_pool_alloc( size );
46 mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
48 *format = mlt_image_rgb24a;
49 if ( *buffer != NULL )
51 mlt_position in = mlt_producer_get_in( producer );
52 mlt_position out = mlt_producer_get_out( producer );
53 mlt_position time = mlt_frame_get_position( frame );
54 double position = ( double )( time - in ) / ( double )( out - in + 1 );
55 process_frei0r_item( MLT_PRODUCER_SERVICE(producer), position, producer_props, frame, buffer, width, height );
61 int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
64 *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
68 // Obtain properties of frame and producer
69 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
71 // Obtain properties of producer
72 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
74 // Set the producer on the frame properties
75 mlt_properties_set_data( properties, "producer_frei0r", producer, 0, NULL, NULL );
77 // Update timecode on the frame we're creating
78 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
80 // Set producer-specific frame properties
81 mlt_properties_set_int( properties, "progressive", 1 );
82 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
84 // Push the get_image method
85 mlt_frame_push_get_image( *frame, producer_get_image );
88 // Calculate the next timecode
89 mlt_producer_prepare_next( producer );
94 void producer_close( mlt_producer producer )
96 producer->close = NULL;
97 mlt_producer_close( producer );