Mercurial > hg > sonic-visualiser
view transform/Transform.h @ 144:56c00f977cac
* Merge last-minute Windows fix across from tagged area!
author | Chris Cannam |
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date | Fri, 11 May 2007 11:22:06 +0000 |
parents | b4110b17bca8 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _TRANSFORM_H_ #define _TRANSFORM_H_ #include "base/Thread.h" #include "data/model/Model.h" typedef QString TransformId; /** * A Transform turns one data model into another. * * Typically in this application, a Transform might have a * DenseTimeValueModel as its input (e.g. an audio waveform) and a * SparseOneDimensionalModel (e.g. detected beats) as its output. * * The Transform typically runs in the background, as a separate * thread populating the output model. The model is available to the * user of the Transform immediately, but may be initially empty until * the background thread has populated it. */ class Transform : public Thread { public: virtual ~Transform(); // Just a hint to the processing thread that it should give up. // Caller should still wait() and/or delete the transform before // assuming its input and output models are no longer required. void abandon() { m_abandoned = true; } Model *getInputModel() { return m_input; } Model *getOutputModel() { return m_output; } Model *detachOutputModel() { m_detached = true; return m_output; } protected: Transform(Model *m); Model *m_input; // I don't own this Model *m_output; // I own this, unless... bool m_detached; // ... this is true. bool m_abandoned; }; #endif