Add mlt_properties_set_lcnumeric, mlt_property_get_double_l, and

[mlt] / src / framework / mlt_transition.h

diff --git a/src/framework/mlt_transition.h b/src/framework/mlt_transition.h
index 7b51de861c786bc6bd447fe39ed30dd1dcb2a65c..3e9d4513f9d12cb4826f9e8412e8cc10585c771b 100644 (file)
--- a/src/framework/mlt_transition.h
+++ b/src/framework/mlt_transition.h
@@ -1,7 +1,10 @@
-/*
- * mlt_transition.h -- abstraction for all transition services
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_transition.h
+ * \brief abstraction for all transition services
+ * \see mlt_transition_s
+ *
+ * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -23,34 +26,40 @@
 
 #include "mlt_service.h"
 
-/** The interface definition for all transitions.
-*/
+/** \brief Transition abstract service class
+ *
+ * A transition may modify the output of a producer based on the output of a second producer.
+ *
+ * \extends mlt_service_s
+ * \properties \em a_track the track index (0-based) of a multitrack of the first producer
+ * \properties \em b_track the track index (0-based) of a multitrack of the second producer
+ * \properties \em accepts_blanks a flag to indicate if the transition should accept blank frames
+ * \properties \em always_active a flag to indicate that the in and out points do not apply
+ * \properties \em _transition_type 1 for video, 2 for audio
+ */
 
 struct mlt_transition_s
 {
-       /* We're implementing service here */
+       /** We're implementing service here */
        struct mlt_service_s parent;
 
-       /* public virtual */
+       /** public virtual */
        void ( *close )( mlt_transition );
 
-       /* protected transition method */
+       /** protected transition method */
        mlt_frame ( *process )( mlt_transition, mlt_frame, mlt_frame );
 
-       /* Protected */
+       /** Protected */
        void *child;
-       
-       /* track and in/out points */
+
+       /** track and in/out points */
        mlt_service producer;
-       
-       /* Private */
+
+       /** Private */
        mlt_frame *frames;
        int held;
 };
 
-/** Public final methods
-*/
-
 #define MLT_TRANSITION_SERVICE( transition )           ( &( transition )->parent )
 #define MLT_TRANSITION_PROPERTIES( transition )                MLT_SERVICE_PROPERTIES( MLT_TRANSITION_SERVICE( transition ) )
 
@@ -64,6 +73,10 @@ extern int mlt_transition_get_a_track( mlt_transition self );
 extern int mlt_transition_get_b_track( mlt_transition self );
 extern mlt_position mlt_transition_get_in( mlt_transition self );
 extern mlt_position mlt_transition_get_out( mlt_transition self );
+extern mlt_position mlt_transition_get_length( mlt_transition self );
+extern mlt_position mlt_transition_get_position( mlt_transition self, mlt_frame frame );
+extern double mlt_transition_get_progress( mlt_transition self, mlt_frame frame );
+extern double mlt_transition_get_progress_delta( mlt_transition self, mlt_frame frame );
 extern mlt_frame mlt_transition_process( mlt_transition self, mlt_frame a_frame, mlt_frame b_frame );
 extern void mlt_transition_close( mlt_transition self );