2 * mlt_profile.c -- video output definition
3 * Copyright (C) 2007 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "mlt_profile.h"
22 #include "mlt_factory.h"
23 #include "mlt_properties.h"
29 #define PROFILES_DIR "/share/mlt/profiles/"
31 static mlt_profile profile
= NULL
;
33 /** Get the current profile
34 * Builds one for PAL DV if non-existing
37 mlt_profile
mlt_profile_get( )
41 profile
= calloc( 1, sizeof( struct mlt_profile_s
) );
44 profile
->name
= strdup( "DV PAL" );
45 profile
->frame_rate_num
= 25;
46 profile
->frame_rate_den
= 1;
48 profile
->height
= 576;
49 profile
->progressive
= 0;
50 profile
->sample_aspect_num
= 59;
51 profile
->sample_aspect_den
= 54;
52 profile
->display_aspect_num
= 4;
53 profile
->display_aspect_den
= 3;
60 /** Load a profile from the system folder
63 mlt_profile
mlt_profile_select( const char *name
)
65 const char *prefix
= PREFIX
;
66 char *filename
= calloc( 1, strlen( prefix
) + strlen( PROFILES_DIR
) + strlen( name
) + 1 );
67 strcpy( filename
, prefix
);
68 if ( filename
[ strlen( filename
) - 1 ] != '/' )
69 filename
[ strlen( filename
) ] = '/';
70 strcat( filename
, PROFILES_DIR
);
71 strcat( filename
, name
);
72 return mlt_profile_load_file( filename
);
75 /** Load a profile from specific file
78 mlt_profile
mlt_profile_load_file( const char *file
)
80 // Load the profile as properties
81 mlt_properties properties
= mlt_properties_load( file
);
82 if ( properties
&& mlt_properties_get_int( properties
, "width" ) )
84 mlt_profile_load_properties( properties
);
87 char *filename
= strdup( file
);
88 profile
->name
= strdup( basename( filename
) );
94 mlt_properties_close( properties
);
100 /** Load a profile from a properties object
103 mlt_profile
mlt_profile_load_properties( mlt_properties properties
)
106 profile
= calloc( 1, sizeof( struct mlt_profile_s
) );
109 if ( mlt_properties_get( properties
, "name" ) )
110 profile
->name
= mlt_properties_get( properties
, "name" );
111 profile
->frame_rate_num
= mlt_properties_get_int( properties
, "frame_rate_num" );
112 profile
->frame_rate_den
= mlt_properties_get_int( properties
, "frame_rate_den" );
113 profile
->width
= mlt_properties_get_int( properties
, "width" );
114 profile
->height
= mlt_properties_get_int( properties
, "height" );
115 profile
->progressive
= mlt_properties_get_int( properties
, "progressive" );
116 profile
->sample_aspect_num
= mlt_properties_get_int( properties
, "sample_aspect_num" );
117 profile
->sample_aspect_den
= mlt_properties_get_int( properties
, "sample_aspect_den" );
118 profile
->display_aspect_num
= mlt_properties_get_int( properties
, "display_aspect_num" );
119 profile
->display_aspect_den
= mlt_properties_get_int( properties
, "display_aspect_den" );
124 /** Load an anonymous profile from string
127 mlt_profile
mlt_profile_load_string( const char *string
)
129 mlt_properties properties
= mlt_properties_new();
132 const char *p
= string
;
135 if ( strcmp( p
, "" ) && p
[ 0 ] != '#' )
136 mlt_properties_parse( properties
, p
);
137 p
= strchr( p
, '\n' );
141 mlt_profile_load_properties( properties
);
142 if ( profile
&& !profile
->name
)
143 profile
->name
= strdup( "untitled" );
147 /** Get the framerate as float
150 double mlt_profile_fps( mlt_profile aprofile
)
153 return ( double ) aprofile
->frame_rate_num
/ aprofile
->frame_rate_den
;
155 return ( double ) mlt_profile_get()->frame_rate_num
/ mlt_profile_get()->frame_rate_den
;
158 /** Get the sample aspect ratio as float
161 double mlt_profile_sar( mlt_profile aprofile
)
164 return ( double ) aprofile
->sample_aspect_num
/ aprofile
->sample_aspect_den
;
166 return ( double ) mlt_profile_get()->sample_aspect_num
/ mlt_profile_get()->sample_aspect_den
;
169 /** Get the display aspect ratio as float
172 double mlt_profile_dar( mlt_profile aprofile
)
175 return ( double ) aprofile
->display_aspect_num
/ aprofile
->display_aspect_den
;
177 return ( double ) mlt_profile_get()->display_aspect_num
/ mlt_profile_get()->display_aspect_den
;
180 /** Free up the global profile resources
183 void mlt_profile_close( )
188 free( profile
->name
);
189 profile
->name
= NULL
;