51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Audacity(R) is copyright (c) 1999-2010 Audacity Team.
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License: GPL v2. See License.txt.
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SilentBlockFile.h
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Dominic Mazzoni
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Vaughan Johnson
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**********************************************************************/
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#ifndef __AUDACITY_SILENT_BLOCKFILE__
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#define __AUDACITY_SILENT_BLOCKFILE__
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#include "../BlockFile.h"
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class DirManager;
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/// A BlockFile containing nothing but silence. Saves disk space.
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class SilentBlockFile final : public BlockFile {
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public:
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// Constructor / Destructor
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SilentBlockFile(size_t sampleLen);
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virtual ~SilentBlockFile();
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// Reading
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/// Read the summary section of the disk file
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bool ReadSummary(ArrayOf<char> &data) override;
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/// Read the data section of the disk file
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size_t ReadData(samplePtr data, sampleFormat format,
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size_t start, size_t len, bool mayThrow) const override;
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/// Create a NEW block file identical to this one
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BlockFilePtr Copy(wxFileNameWrapper &&newFileName) override;
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/// Write an XML representation of this file
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void SaveXML(XMLWriter &xmlFile) override;
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DiskByteCount GetSpaceUsage() const override;
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void Recover() override { };
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static BlockFilePtr BuildFromXML(DirManager &dm, const wxChar **attrs);
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};
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#endif
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