120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
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/*
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DUMMY-PLAYER-FACADE.hpp - access point to a dummy test player
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Copyright (C) Lumiera.org
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2009, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef PROC_INTERFACE_DUMMYPLAYER_H
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#define PROC_INTERFACE_DUMMYPLAYER_H
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struct lumiera_playprocess_struct { };
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typedef struct lumiera_playprocess_struct lumiera_playprocess;
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typedef lumiera_playprocess* LumieraPlayProcess;
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#ifdef __cplusplus /* ============== C++ Interface ================= */
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#include "common/subsys.hpp"
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#include "include/interfaceproxy.hpp"
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namespace proc {
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class PlayProcess;
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/******************************************************************
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* Interface Proc-Layer (or maybe the backend?):
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* Global access point for starting a dummy playback, generating
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* some test image data for the GUI to display in a viewer window.
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*
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* This is a mockup service we created 1/2009 to collect some
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* experiences regarding integration of the application layers.
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* Lumiera is not yet able actually to deliver rendered video data.
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*
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*/
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class DummyPlayer
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{
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public:
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/** provide a descriptor for lumiera::AppState,
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* wired accordingly to allow main to deal with
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* the dummy player as independent subsystem. */
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static lumiera::Subsys& getDescriptor();
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/** get an implementation instance of this service */
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static lumiera::facade::Accessor<DummyPlayer> facade;
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//////////////////TODO: define some dummy negotiation about size and framerate....
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virtual PlayProcess& start() =0;
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virtual ~DummyPlayer();
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};
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/**
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* Continuous playback process, which has been started with a specific
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* output size, format and framerate. It is a handle to a calculation process,
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* which is about to produce a stream of frames to be retrieved by calling
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* the #getFrame function on this handle.
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*
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* @todo solve the lifecycle and ownership!
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*/
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class PlayProcess
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: public LumieraPlayProcess
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{
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public:
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virtual void pause(bool) =0;
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virtual void* const getFrame() =0;
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virtual ~PlayProcess();
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};
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} // namespace proc
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extern "C" {
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#endif /* =========================== CL Interface ===================== */
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#include "common/interface.h"
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LUMIERA_INTERFACE_DECLARE (lumieraorg_DummyPlayer, 0
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, LUMIERA_INTERFACE_SLOT (LumieraPlayProcess, startPlay,(void) )
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, LUMIERA_INTERFACE_SLOT (void, pausePlay,(LumieraPlayProcess, bool))
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, LUMIERA_INTERFACE_SLOT (void, terminate,(LumieraPlayProcess) )
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, LUMIERA_INTERFACE_SLOT (void *, getFrame, (LumieraPlayProcess) )
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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