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/*
* FileInfoParser.h
*
* Created on: 31 Mar 2018
* Author: David
*/
#ifndef SRC_STORAGE_FILEINFOPARSER_H_
#define SRC_STORAGE_FILEINFOPARSER_H_
#include <RepRapFirmware.h>
#include <GCodes/GCodeFileInfo.h>
#if HAS_MASS_STORAGE
#include <RTOSIface/RTOSIface.h>
const FilePosition GCODE_HEADER_SIZE = 20000uL; // How many bytes to read from the header - I (DC) have a Kisslicer file with a layer height comment 14Kb from the start
const FilePosition GCODE_FOOTER_SIZE = 400000uL; // How many bytes to read from the footer
#if SAME70 || SAME5x
const size_t GCODE_READ_SIZE = 2048; // How many bytes to read in one go in GetFileInfo() (should be a multiple of 512 for read efficiency)
#else
const size_t GCODE_READ_SIZE = 1024; // How many bytes to read in one go in GetFileInfo() (should be a multiple of 512 for read efficiency)
#endif
const size_t GcodeFooterPrintTimeSearchSize = 4096; // How much of the end of the file we search for the estimated print time in
const size_t GCODE_OVERLAP_SIZE = 100; // Size of the overlapping buffer for searching (must be a multiple of 4)
const uint32_t MAX_FILEINFO_PROCESS_TIME = 200; // Maximum time to spend polling for file info in each call
const uint32_t MaxFileParseInterval = 4000; // Maximum interval between repeat requests to parse a file
enum FileParseState
{
notParsing,
parsingHeader,
seeking,
parsingFooter
};
class FileInfoParser
{
public:
FileInfoParser() noexcept;
// The following method needs to be called repeatedly until it doesn't return GCodeResult::notFinished - this may take a few runs
GCodeResult GetFileInfo(const char *filePath, GCodeFileInfo& info, bool quitEarly) noexcept;
static constexpr const char* SimulatedTimeString = "\n; Simulated print time"; // used by FileInfoParser and MassStorage
private:
// G-Code parser methods
bool FindHeight(const char* bufp, size_t len) noexcept;
bool FindLayerHeight(const char* bufp) noexcept;
bool FindSlicerInfo(const char* bufp) noexcept;
bool FindPrintTime(const char* bufp) noexcept;
bool FindSimulatedTime(const char* bufp) noexcept;
unsigned int FindFilamentUsed(const char* bufp) noexcept;
void FindFilamentUsedEmbedded(const char* p, const char *s1, const char *s2, unsigned int &filamentsFound) noexcept;
// We parse G-Code files in multiple stages. These variables hold the required information
Mutex parserMutex;
FileParseState parseState;
String<MaxFilenameLength> filenameBeingParsed;
FileStore *fileBeingParsed;
FilePosition nextSeekPos;
GCodeFileInfo parsedFileInfo;
uint32_t lastFileParseTime;
uint32_t accumulatedParseTime, accumulatedReadTime, accumulatedSeekTime;
size_t fileOverlapLength;
// We used to allocate the following buffer on the stack; but now that this is called by more than one task
// it is more economical to allocate it permanently because that lets us use smaller stacks.
// Alternatively, we could allocate a FileBuffer temporarily.
alignas(4) char buf[GCODE_READ_SIZE + GCODE_OVERLAP_SIZE + 1]; // buffer must be 32-bit aligned for HSMCI. We need the +1 so we can add a null terminator.
};
#endif
#endif /* SRC_STORAGE_FILEINFOPARSER_H_ */
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