X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_transition.h;h=0f9879a3087c8c389dabcf47fd7b616dbae17e41;hb=f4963a6aa07644399b273b5d2b1f9299c9047414;hp=7b51de861c786bc6bd447fe39ed30dd1dcb2a65c;hpb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;p=melted diff --git a/src/framework/mlt_transition.h b/src/framework/mlt_transition.h index 7b51de8..0f9879a 100644 --- 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 +/** + * \file mlt_transition.h + * \brief abstraction for all transition services + * \see mlt_transition_s + * + * Copyright (C) 2003-2009 Ushodaya Enterprises Limited + * \author Charles Yates * * 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 ) )