Mercurial > hg > svcore
view data/model/RangeSummarisableTimeValueModel.h @ 299:576be0d0d218
* Merge transform directory from sv-match-alignment branch
(the previous comment included notes for this stuff, but I missed it
in the actual merge)
* Fix crash when a transform fails to create an output model and the
thread that created the transform then deletes its input model thinking
it's no longer needed, even though the transform run thread is still
using it -- fix is to wait() on the transform before returning the
null output model
author | Chris Cannam |
---|---|
date | Fri, 28 Sep 2007 16:15:06 +0000 |
parents | c022976d18e8 |
children | 5877d68815c7 |
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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 2006-2007 Chris Cannam and QMUL. 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 _RANGE_SUMMARISABLE_TIME_VALUE_MODEL_H_ #define _RANGE_SUMMARISABLE_TIME_VALUE_MODEL_H_ #include <QObject> #include "DenseTimeValueModel.h" #include "base/ZoomConstraint.h" class AlignmentModel; /** * Base class for models containing dense two-dimensional data (value * against time) that may be meaningfully represented in a zoomed view * using min/max range summaries. Audio waveform data is an obvious * example: think "peaks and minima" for "ranges". */ class RangeSummarisableTimeValueModel : public DenseTimeValueModel { Q_OBJECT public: RangeSummarisableTimeValueModel() : m_alignment(0) { } struct Range { float min; float max; float absmean; Range() : min(0.f), max(0.f), absmean(0.f) { } Range(const Range &r) : min(r.min), max(r.max), absmean(r.absmean) { } Range(float min_, float max_, float absmean_) : min(min_), max(max_), absmean(absmean_) { } }; typedef std::vector<Range> RangeBlock; /** * Return ranges between the given start and end frames, * summarised at the given block size. ((end - start + 1) / * blockSize) ranges should ideally be returned. * * If the given block size is not supported by this model * (according to its zoom constraint), also modify the blockSize * parameter so as to return the block size that was actually * obtained. */ virtual void getRanges(size_t channel, size_t start, size_t end, RangeBlock &ranges, size_t &blockSize) const = 0; /** * Return the range between the given start and end frames, * summarised at a block size equal to the distance between start * and end frames. */ virtual Range getRange(size_t channel, size_t start, size_t end) const = 0; virtual void setAlignment(AlignmentModel *alignment); // I take ownership virtual const Model *getAlignmentReference() const; virtual size_t alignToReference(size_t frame) const; virtual size_t alignFromReference(size_t referenceFrame) const; virtual int getAlignmentCompletion() const; signals: void alignmentCompletionChanged(); protected: AlignmentModel *m_alignment; }; #endif