[Mlt-devel] SF.net SVN: mlt:[1361] trunk/mlt/src/modules/frei0r/producer_frei0r.c

[<ble...@us...>]

Revision: 1361
          http://mlt.svn.sourceforge.net/mlt/?rev=1361&view=rev
Author:   blendamedt
Date:     2009-02-20 12:34:57 +0000 (Fri, 20 Feb 2009)

Log Message:
-----------
modules/frei0r: added missing producer_frei0r.c
-This line, and those below, will be ignored--

A    producer_frei0r.c

Added Paths:
-----------
    trunk/mlt/src/modules/frei0r/producer_frei0r.c

Added: trunk/mlt/src/modules/frei0r/producer_frei0r.c
===================================================================
--- trunk/mlt/src/modules/frei0r/producer_frei0r.c	                        (rev 0)
+++ trunk/mlt/src/modules/frei0r/producer_frei0r.c	2009-02-20 12:34:57 UTC (rev 1361)
@@ -0,0 +1,99 @@
+/*
+ * producer_frei0r.c -- frei0r producer
+ * Copyright (c) 2009 Jean-Baptiste Mardelle <jb...@kd...>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <framework/mlt.h>
+
+#include "frei0r_helper.h"
+#include <string.h>
+
+static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
+{
+	
+	// Obtain properties of frame
+	mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
+
+	// Obtain the producer for this frame
+	mlt_producer producer = mlt_properties_get_data( properties, "producer_frei0r", NULL );
+
+	// Obtain properties of producer
+	mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
+
+	// Allocate the image
+	int size = *width * ( *height + 1 ) * 2;
+
+	// Allocate the image
+	*buffer = mlt_pool_alloc( size );
+
+	// Update the frame
+	mlt_properties_set_data( properties, "image", *buffer, size, mlt_pool_release, NULL );
+	mlt_properties_set_int( properties, "width", *width );
+	mlt_properties_set_int( properties, "height", *height );
+
+	*format = mlt_image_yuv422;
+	if ( *buffer != NULL )
+	{
+		mlt_position in = mlt_producer_get_in( producer );
+		mlt_position out = mlt_producer_get_out( producer );
+		mlt_position time = mlt_frame_get_position( frame );
+		double position = ( double )( time - in ) / ( double )( out - in + 1 );
+		process_frei0r_item( producer_type , position, producer_props, frame , buffer, format , width , height , writable );
+	}
+
+    return 0;
+}
+
+int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
+{
+	// Generate a frame
+	*frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) );
+
+	if ( *frame != NULL )
+	{
+		// Obtain properties of frame and producer
+		mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
+
+		// Obtain properties of producer
+		mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
+
+		// Set the producer on the frame properties
+		mlt_properties_set_data( properties, "producer_frei0r", producer, 0, NULL, NULL );
+
+		// Update timecode on the frame we're creating
+		mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
+
+		// Set producer-specific frame properties
+		mlt_properties_set_int( properties, "progressive", 1 );
+		mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( producer_props, "aspect_ratio" ) );
+
+		// Push the get_image method
+		mlt_frame_push_get_image( *frame, producer_get_image );
+	}
+
+	// Calculate the next timecode
+	mlt_producer_prepare_next( producer );
+
+	return 0;
+}
+
+void producer_close( mlt_producer producer )
+{
+	producer->close = NULL;
+	mlt_producer_close( producer );
+	free( producer );
+}


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