]> git.sesse.net Git - mlt/blob - src/modules/frei0r/producer_frei0r.c
Refactor frei0r and fix time parameter.
[mlt] / src / modules / frei0r / producer_frei0r.c
1 /*
2  * producer_frei0r.c -- frei0r producer
3  * Copyright (c) 2009 Jean-Baptiste Mardelle <jb@kdenlive.org>
4  *
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.
9  *
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.
14  *
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
18  */
19
20 #include <framework/mlt.h>
21
22 #include "frei0r_helper.h"
23
24 #include <stdlib.h>
25 #include <string.h>
26
27 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
28 {
29         
30         // Obtain properties of frame
31         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
32
33         // Obtain the producer for this frame
34         mlt_producer producer = mlt_properties_get_data( properties, "producer_frei0r", NULL );
35
36         // Obtain properties of producer
37         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
38
39         // Allocate the image
40         int size = *width * ( *height + 1 ) * 4;
41
42         // Allocate the image
43         *buffer = mlt_pool_alloc( size );
44
45         // Update the frame
46         mlt_frame_set_image( frame, *buffer, size, mlt_pool_release );
47
48         *format = mlt_image_rgb24a;
49         if ( *buffer != NULL )
50         {
51                 double position = mlt_frame_get_position( frame );
52                 mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( producer ) );
53                 double time = position / mlt_profile_fps( profile );
54                 process_frei0r_item( MLT_PRODUCER_SERVICE(producer), position, time, producer_props, frame, buffer, width, height );
55         }
56
57     return 0;
58 }
59
60 int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
61 {
62         // Generate a frame
63         *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
64
65         if ( *frame != NULL )
66         {
67                 // Obtain properties of frame and producer
68                 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
69
70                 // Obtain properties of producer
71                 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
72
73                 // Set the producer on the frame properties
74                 mlt_properties_set_data( properties, "producer_frei0r", producer, 0, NULL, NULL );
75
76                 // Update timecode on the frame we're creating
77                 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
78
79                 // Set producer-specific frame properties
80                 mlt_properties_set_int( properties, "progressive", 1 );
81                 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
82
83                 // Push the get_image method
84                 mlt_frame_push_get_image( *frame, producer_get_image );
85         }
86
87         // Calculate the next timecode
88         mlt_producer_prepare_next( producer );
89
90         return 0;
91 }
92
93 void producer_close( mlt_producer producer )
94 {
95         producer->close = NULL;
96         mlt_producer_close( producer );
97         free( producer );
98 }