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;