66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
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/*
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Timings - timing specifications for a frame quantised data stream
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Copyright (C) Lumiera.org
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2012, 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
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the 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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#include "proc/play/timings.hpp"
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#include "lib/time/formats.hpp"
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#include "lib/time/timequant.hpp"
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namespace proc {
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namespace play {
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using lib::time::PQuant;
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namespace { // hidden local details of the service implementation....
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inline PQuant
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buildStandardGridForFramerate (FrameRate fps)
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{
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return PQuant (new lib::time::FixedFrameQuantiser (fps));
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} //////TODO maybe caching these quantisers? they are immutable and threadsafe
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} // (End) hidden service impl details
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/** Create a default initialised Timing constraint record.
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* Using the standard optimistic settings for most values,
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* no latency, no special requirements. The frame grid is
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* rooted at the "natural" time origin; it is not related
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* in any way to the current session.
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* @remarks this ctor is intended rather for testing purposes!
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* Usually, when creating a play/render process,
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* the actual timings \em are related to the timeline
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* and the latency/speed requirements of the output.
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*/
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Timings::Timings (FrameRate fps)
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: grid_(buildStandardGridForFramerate(fps))
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, playbackUrgency (ASAP)
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{ }
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}} // namespace proc::play
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