mirror of
https://github.com/cookiengineer/audacity
synced 2026-02-04 18:53:24 +01:00
4ce2643d5f
// Indentation settings for Vim and Emacs etc. lines from all files, as Campbell's patch (except for other changes to Languages.cpp)
97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
/**********************************************************************
|
|
|
|
Audacity: A Digital Audio Editor
|
|
|
|
SimpleBlockFile.h
|
|
|
|
Joshua Haberman
|
|
|
|
**********************************************************************/
|
|
|
|
#ifndef __AUDACITY_SIMPLE_BLOCKFILE__
|
|
#define __AUDACITY_SIMPLE_BLOCKFILE__
|
|
|
|
#include <wx/string.h>
|
|
#include <wx/filename.h>
|
|
|
|
#include "../BlockFile.h"
|
|
#include "../DirManager.h"
|
|
#include "../xml/XMLWriter.h"
|
|
|
|
struct SimpleBlockFileCache {
|
|
bool active;
|
|
bool needWrite;
|
|
sampleFormat format;
|
|
samplePtr sampleData;
|
|
void* summaryData;
|
|
};
|
|
|
|
// The AU formats we care about
|
|
enum {
|
|
AU_SAMPLE_FORMAT_16 = 3,
|
|
AU_SAMPLE_FORMAT_24 = 4,
|
|
AU_SAMPLE_FORMAT_FLOAT = 6,
|
|
};
|
|
|
|
typedef struct {
|
|
wxUint32 magic; // magic number
|
|
wxUint32 dataOffset; // byte offset to start of audio data
|
|
wxUint32 dataSize; // data length, in bytes (optional)
|
|
wxUint32 encoding; // data encoding enumeration
|
|
wxUint32 sampleRate; // samples per second
|
|
wxUint32 channels; // number of interleaved channels
|
|
} auHeader;
|
|
|
|
class SimpleBlockFile : public BlockFile {
|
|
public:
|
|
|
|
// Constructor / Destructor
|
|
|
|
/// Create a disk file and write summary and sample data to it
|
|
SimpleBlockFile(wxFileName baseFileName,
|
|
samplePtr sampleData, sampleCount sampleLen,
|
|
sampleFormat format,
|
|
bool allowDeferredWrite = false,
|
|
bool bypassCache = false );
|
|
/// Create the memory structure to refer to the given block file
|
|
SimpleBlockFile(wxFileName existingFile, sampleCount len,
|
|
float min, float max, float rms);
|
|
|
|
virtual ~SimpleBlockFile();
|
|
|
|
// Reading
|
|
|
|
/// Read the summary section of the disk file
|
|
virtual bool ReadSummary(void *data);
|
|
/// Read the data section of the disk file
|
|
virtual int ReadData(samplePtr data, sampleFormat format,
|
|
sampleCount start, sampleCount len);
|
|
|
|
/// Create a new block file identical to this one
|
|
virtual BlockFile *Copy(wxFileName newFileName);
|
|
/// Write an XML representation of this file
|
|
virtual void SaveXML(XMLWriter &xmlFile);
|
|
|
|
virtual wxLongLong GetSpaceUsage();
|
|
virtual void Recover();
|
|
|
|
static BlockFile *BuildFromXML(DirManager &dm, const wxChar **attrs);
|
|
|
|
virtual bool GetNeedWriteCacheToDisk();
|
|
virtual void WriteCacheToDisk();
|
|
|
|
virtual bool GetNeedFillCache() { return !mCache.active; }
|
|
virtual void FillCache();
|
|
|
|
protected:
|
|
|
|
bool WriteSimpleBlockFile(samplePtr sampleData, sampleCount sampleLen,
|
|
sampleFormat format, void* summaryData);
|
|
static bool GetCache();
|
|
void ReadIntoCache();
|
|
|
|
SimpleBlockFileCache mCache;
|
|
};
|
|
|
|
#endif
|