2 * producer_kdenlivetitle.c -- kdenlive producer
3 * Copyright (c) 2009 Marco Gittler <g.marco@freenet.de>
4 * Copyright (c) 2009 Jean-Baptiste Mardelle <jb@kdenlive.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "kdenlivetitle_wrapper.h"
23 #include <framework/mlt.h>
28 void read_xml(mlt_properties properties)
30 FILE *f = fopen( mlt_properties_get( properties, "resource" ), "r");
36 fseek (f , 0 , SEEK_END);
40 char *infile = (char*) mlt_pool_alloc(lSize);
41 size=fread(infile,1,lSize,f);
44 mlt_properties_set(properties, "_xmldata", infile);
45 mlt_pool_release( infile );
49 static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
51 /* Obtain properties of frame */
52 mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
54 /* Obtain the producer for this frame */
55 producer_ktitle this = mlt_properties_get_data( properties, "producer_kdenlivetitle", NULL );
57 /* Obtain properties of producer */
58 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( &this->parent );
60 *width = mlt_properties_get_int( properties, "rescale_width" );
61 *height = mlt_properties_get_int( properties, "rescale_height" );
63 mlt_service_lock( MLT_PRODUCER_SERVICE( &this->parent ) );
65 /* Allocate the image */
66 *format = mlt_image_rgb24a;
67 mlt_position time = mlt_producer_position( &this->parent ) + mlt_producer_get_in( &this->parent );
68 if ( mlt_properties_get_int( producer_props, "force_reload" ) ) {
69 if (mlt_properties_get_int( producer_props, "force_reload" ) > 1) read_xml(producer_props);
70 mlt_properties_set_int( producer_props, "force_reload", 0 );
71 drawKdenliveTitle( this, frame, *width, *height, time, 1);
73 else drawKdenliveTitle( this, frame, *width, *height, time, 0);
75 // Get width and height (may have changed during the refresh)
76 *width = mlt_properties_get_int( properties, "width" );
77 *height = mlt_properties_get_int( properties, "height" );
79 if ( this->current_image )
81 // Clone the image and the alpha
82 int image_size = this->current_width * ( this->current_height ) * 4;
83 uint8_t *image_copy = mlt_pool_alloc( image_size );
84 memcpy( image_copy, this->current_image, image_size );
85 // Now update properties so we free the copy after
86 mlt_frame_set_image( frame, image_copy, image_size, mlt_pool_release );
87 // We're going to pass the copy on
90 mlt_log_debug( MLT_PRODUCER_SERVICE( &this->parent ), "width:%d height:%d %s\n", *width, *height, mlt_image_format_name( *format ) );
93 mlt_service_unlock( MLT_PRODUCER_SERVICE( &this->parent ) );
98 static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
101 // Get the real structure for this producer
102 producer_ktitle this = producer->child;
104 /* Generate a frame */
105 *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
107 if ( *frame != NULL )
109 /* Obtain properties of frame and producer */
110 mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
112 /* Obtain properties of producer */
113 mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
115 /* Set the producer on the frame properties */
116 mlt_properties_set_data( properties, "producer_kdenlivetitle", this, 0, NULL, NULL );
118 /* Update timecode on the frame we're creating */
119 mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
121 /* Set producer-specific frame properties */
122 mlt_profile profile = mlt_service_profile ( MLT_PRODUCER_SERVICE( producer ) ) ;
123 mlt_properties_set_int( properties, "progressive", ( profile ) ? profile->progressive : 1 );
124 mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
126 /* Push the get_image method */
127 mlt_frame_push_get_image( *frame, producer_get_image );
130 /* Calculate the next timecode */
131 mlt_producer_prepare_next( producer );
136 static void producer_close( mlt_producer producer )
138 /* fprintf(stderr, ":::::::::::::: CLOSING TITLE\n"); */
139 producer->close = NULL;
140 mlt_producer_close( producer );
145 mlt_producer producer_kdenlivetitle_init( mlt_profile profile, mlt_service_type type, const char *id, char *filename )
147 /* fprintf(stderr, ":::::::::::: CREATE TITLE\n"); */
148 /* Create a new producer object */
150 producer_ktitle this = calloc( sizeof( struct producer_ktitle_s ), 1 );
151 if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
153 mlt_producer producer = &this->parent;
155 /* Get the properties interface */
156 mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
157 /* Callback registration */
158 producer->get_frame = producer_get_frame;
159 producer->close = ( mlt_destructor )producer_close;
160 mlt_properties_set( properties, "resource", filename );
161 //mlt_properties_set_int( properties, "aspect_ratio", 1 );
162 read_xml(properties);