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"
25 static int producer_get_image( mlt_frame frame
, uint8_t **buffer
, mlt_image_format
*format
, int *width
, int *height
, int writable
)
28 // Obtain properties of frame
29 mlt_properties properties
= MLT_FRAME_PROPERTIES( frame
);
31 // Obtain the producer for this frame
32 mlt_producer producer
= mlt_properties_get_data( properties
, "producer_frei0r", NULL
);
34 // Obtain properties of producer
35 mlt_properties producer_props
= MLT_PRODUCER_PROPERTIES( producer
);
38 int size
= *width
* ( *height
+ 1 ) * 2;
41 *buffer
= mlt_pool_alloc( size
);
44 mlt_properties_set_data( properties
, "image", *buffer
, size
, mlt_pool_release
, NULL
);
45 mlt_properties_set_int( properties
, "width", *width
);
46 mlt_properties_set_int( properties
, "height", *height
);
48 *format
= mlt_image_yuv422
;
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( producer_type
, position
, producer_props
, frame
, buffer
, format
, width
, height
, writable
);
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
);