mirror of
https://github.com/clockworkpi/DevTerm.git
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add devterm_thermal_printer_cups
This commit is contained in:
cuu
511
Code/devterm_thermal_printer_cups/rastertocpi.c
Normal file
511
Code/devterm_thermal_printer_cups/rastertocpi.c
Normal file
@@ -0,0 +1,511 @@
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// To get required headers, run
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// sudo apt-get install libcups2-dev libcupsimage2-dev
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#include <cups/cups.h>
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#include <cups/ppd.h>
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#include <cups/raster.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdlib.h>
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#ifndef DEBUGFILE
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#define DEBUGFILE "/tmp/debugraster.txt"
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#endif
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static inline int min(int a, int b) {
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if (a > b)
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return b;
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return a;
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}
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// settings and their stuff
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struct settings_ {
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int modelNum; // the only setting we get from PPD.
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cups_bool_t InsertSheet;
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cups_adv_t AdvanceMedia;
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cups_cut_t CutMedia;
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unsigned int AdvanceDistance;
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};
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struct settings_ settings;
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static void initializeSettings(char *commandLineOptionSettings, struct settings_ *pSettings) {
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ppd_file_t *pPpd = ppdOpenFile(getenv("PPD"));
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// char* sDestination = getenv("DestinationPrinterID");
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memset(pSettings, 0, sizeof(struct settings_));
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pSettings->modelNum = pPpd->model_number;
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ppdClose(pPpd);
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}
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static void update_settings_from_job (cups_page_header2_t * pHeader)
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{
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if (!pHeader)
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return;
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settings.InsertSheet = pHeader->cupsInteger[6];
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settings.AdvanceMedia = pHeader->AdvanceMedia;
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settings.CutMedia = pHeader->CutMedia;
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settings.AdvanceDistance = pHeader->AdvanceDistance;
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}
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#ifndef DEBUGP
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static inline void mputchar(char c) { putchar(c); }
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#define DEBUGSTARTPRINT()
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#define DEBUGFINISHPRINT()
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#define DEBUGPRINT(...)
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#else
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FILE *lfd = 0;
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// putchar with debug wrappers
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static inline void mputchar(char c) {
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unsigned char m = c;
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if (lfd)
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fprintf(lfd, "%02x ", m);
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putchar(m);
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}
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// on macos cups filters works in a sandbox and cant write
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// filtes everywhere. We'll use $TMPDIR/debugraster.txt for them
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#ifdef SAFEDEBUG
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static inline void DEBUGSTARTPRINT() {
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char * tmpfolder = getenv("TMPDIR");
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const char *filename = "/debugraster.txt";
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char *dbgpath = (char *)malloc(strlen(tmpfolder) + strlen(filename) + 1);
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strcpy(dbgpath,tmpfolder);
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strcat(dbgpath,filename);
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lfd = fopen(dbgpath,"w");
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free(dbgpath);
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}
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#else
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#define DEBUGSTARTPRINT() lfd = fopen(DEBUGFILE, "w")
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#endif
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#define DEBUGFINISHPRINT() \
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if (lfd) \
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fclose(lfd)
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#define DEBUGPRINT(...) if (lfd) fprintf(lfd, "\n" __VA_ARGS__)
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#endif
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// procedure to output an array
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static inline void outputarray(const char *array, int length) {
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int i = 0;
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for (; i < length; ++i)
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mputchar(array[i]);
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}
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// output a command. -1 is because we determine them as string literals,
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// so \0 implicitly added at the end, but we don't need it at all
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#define SendCommand(COMMAND) outputarray((COMMAND),sizeof((COMMAND))-1)
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static inline void mputnum(unsigned int val) {
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mputchar(val&0xFFU);
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mputchar((val>>8)&0xFFU);
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}
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/*
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* cpi-58 uses kind of epson ESC/POS dialect code. Here is subset of commands
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*
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* initialize - esc @
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* cash drawer 1 - esc p 0 @ P
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* cash drawer 2 - esc p 1 @ P // @ =0x40 and P=0x50 <N> and <M>
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* where <N>*2ms is pulse on time, <M>*2ms is pulse off.
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* start raster - GS v 0 // 0 is full-density, may be also 1, 2, 4
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* skip lines - esc J // then N [0..255], each value 1/44 inches (0.176mm)
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* // another commands out-of-spec:
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* esc 'i' - cutter; xprinter android example shows as GS V \1 (1D 56 01)
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* esc '8' - wait{4, cutter also (char[4]){29,'V','A',20}}; GS V 'A' 20
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*/
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// define printer initialize command
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static const char escInit[] = "\x1b@";
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// define cashDrawerEjector command
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static const char escCashDrawerEject[] = "\x1bp";
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// define raster mode start command
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static const char escRasterMode[] = "\x1dv0\0";
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// define flush command
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static const char escFlush[] = "\x1bJ";
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// define cut command
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//static const char escCut[] = "\x1bi";
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static const char escCut[] = "\x1dV\1";
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// enter raster mode and set up x and y dimensions
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static inline void sendRasterHeader(int xsize, int ysize) {
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// outputCommand(rasterModeStartCommand);
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SendCommand(escRasterMode);
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mputnum(xsize);
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mputnum(ysize);
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}
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static inline void flushLines(unsigned short lines)
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{
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SendCommand(escFlush);
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mputchar (lines);
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}
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// print all unprinted (i.e. flush the buffer)
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static inline void flushBuffer() {
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flushLines(0);
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}
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// flush, then feed 24 lines
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static inline void flushManyLines(int iLines)
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{
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DEBUGPRINT("Skip %d empty lines: ", iLines);
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while ( iLines )
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{
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int iStride = min (iLines, 24);
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flushLines ( iStride );
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iLines -= iStride;
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}
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}
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inline static void cutMedia()
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{
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SendCommand(escCut);
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}
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// sent on the beginning of print job
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void setupJob() {
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SendCommand(escInit);
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}
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// sent at the very end of print job
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void finalizeJob() {
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// SendCommand(escInit);
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}
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// sent at the end of every page
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#ifndef __sighandler_t
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typedef void (*__sighandler_t)(int);
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#endif
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__sighandler_t old_signal;
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void finishPage() {
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signal(SIGTERM, old_signal);
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}
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// sent on job canceling
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void cancelJob() {
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int i = 0;
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for (; i < 0x258; ++i)
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mputchar(0);
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finishPage();
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}
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// invoked before starting to print a page
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void startPage() { old_signal = signal(SIGTERM, cancelJob); }
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void DebugPrintHeader (cups_page_header2_t* pHeader)
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{
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DEBUGPRINT(
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"MediaClass '%s'\n"
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"MediaColor '%s'\n"
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"MediaType '%s'\n"
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"OutputType '%s'\n"
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"AdvanceDistance %d\n"
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"AdvanceMedia %d\n"
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"Collate %d\n"
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"CutMedia %d\n"
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"Duplex %d\n"
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"HWResolution %d %d\n"
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"ImagingBoundingBox %d %d %d %d\n"
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"InsertSheet %d\n"
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"Jog %d\n"
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"LeadingEdge %d\n"
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"Margins %d %d\n"
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"ManualFeed %d\n"
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"MediaPosition %d\n"
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"MediaWeight %d\n"
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"MirrorPrint %d\n"
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"NegativePrint %d\n"
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"NumCopies %d\n"
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"Orientation %d\n"
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"OutputFaceUp %d\n"
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"PageSize %d %d\n"
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"Separations %d\n"
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"TraySwitch %d\n"
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"Tumble %d\n"
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"cupsWidth %d\n"
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"cupsHeight %d\n"
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"cupsMediaType %d\n"
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"cupsBitsPerColor %d\n"
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"cupsBitsPerPixel %d\n"
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"cupsBytesPerLine %d\n"
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"cupsColorOrder %d\n"
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"cupsColorSpace %d\n"
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"cupsCompression %d\n"
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"cupsRowCount %d\n"
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"cupsRowFeed %d\n"
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"cupsRowStep %d\n"
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"cupsNumColors %d\n"
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"cupsBorderlessScalingFactor %f\n"
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"cupsPageSize %f %f\n"
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"cupsImagingBBox %f %f %f %f\n"
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"cupsInteger %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d\n"
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"cupsReal %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f\n"
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"cupsString '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s' '%s'\n"
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"cupsMarkerType '%s'\n"
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"cupsRenderingIntent '%s'\n"
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"cupsPageSizeName '%s'\n",
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pHeader->MediaClass, pHeader->MediaColor, pHeader->MediaType,
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pHeader->OutputType, pHeader->AdvanceDistance, pHeader->AdvanceMedia,
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pHeader->Collate, pHeader->CutMedia, pHeader->Duplex,
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pHeader->HWResolution[0], pHeader->HWResolution[1],
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pHeader->ImagingBoundingBox[0], pHeader->ImagingBoundingBox[1],
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pHeader->ImagingBoundingBox[2], pHeader->ImagingBoundingBox[3],
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pHeader->InsertSheet, pHeader->Jog, pHeader->LeadingEdge, pHeader->Margins[0],
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pHeader->Margins[1], pHeader->ManualFeed, pHeader->MediaPosition,
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pHeader->MediaWeight, pHeader->MirrorPrint, pHeader->NegativePrint,
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pHeader->NumCopies, pHeader->Orientation, pHeader->OutputFaceUp,
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pHeader->PageSize[0], pHeader->PageSize[1], pHeader->Separations,
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pHeader->TraySwitch, pHeader->Tumble, pHeader->cupsWidth, pHeader->cupsHeight,
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pHeader->cupsMediaType, pHeader->cupsBitsPerColor, pHeader->cupsBitsPerPixel,
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pHeader->cupsBytesPerLine, pHeader->cupsColorOrder, pHeader->cupsColorSpace,
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pHeader->cupsCompression, pHeader->cupsRowCount, pHeader->cupsRowFeed,
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pHeader->cupsRowStep, pHeader->cupsNumColors,
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pHeader->cupsBorderlessScalingFactor, pHeader->cupsPageSize[0],
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pHeader->cupsPageSize[1], pHeader->cupsImagingBBox[0],
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pHeader->cupsImagingBBox[1], pHeader->cupsImagingBBox[2],
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pHeader->cupsImagingBBox[3], pHeader->cupsInteger[0],
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pHeader->cupsInteger[1], pHeader->cupsInteger[2], pHeader->cupsInteger[3],
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pHeader->cupsInteger[4], pHeader->cupsInteger[5], pHeader->cupsInteger[6],
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pHeader->cupsInteger[7], pHeader->cupsInteger[8], pHeader->cupsInteger[9],
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pHeader->cupsInteger[10], pHeader->cupsInteger[11], pHeader->cupsInteger[12],
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pHeader->cupsInteger[13], pHeader->cupsInteger[14], pHeader->cupsInteger[15],
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pHeader->cupsReal[0], pHeader->cupsReal[1], pHeader->cupsReal[2],
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pHeader->cupsReal[3], pHeader->cupsReal[4], pHeader->cupsReal[5],
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pHeader->cupsReal[6], pHeader->cupsReal[7], pHeader->cupsReal[8],
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pHeader->cupsReal[9], pHeader->cupsReal[10], pHeader->cupsReal[11],
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pHeader->cupsReal[12], pHeader->cupsReal[13], pHeader->cupsReal[14],
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pHeader->cupsReal[15], pHeader->cupsString[0], pHeader->cupsString[1],
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pHeader->cupsString[2], pHeader->cupsString[3], pHeader->cupsString[4],
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pHeader->cupsString[5], pHeader->cupsString[6], pHeader->cupsString[7],
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pHeader->cupsString[8], pHeader->cupsString[9], pHeader->cupsString[10],
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pHeader->cupsString[11], pHeader->cupsString[12], pHeader->cupsString[13],
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pHeader->cupsString[14], pHeader->cupsString[15], pHeader->cupsMarkerType,
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pHeader->cupsRenderingIntent, pHeader->cupsPageSizeName);
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}
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// rearrange (compress) rows in pBuf, discarding tails of them
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static inline unsigned compress_buffer(unsigned char *pBuf, unsigned iSize,
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unsigned int iWideStride, unsigned int iStride) {
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const unsigned char *pEnd = pBuf + iSize;
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unsigned char *pTarget = pBuf;
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while (pBuf < pEnd) {
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int iBytes = min(pEnd - pBuf, iStride);
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memmove(pTarget, pBuf, iBytes);
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pTarget += iBytes;
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pBuf += iWideStride;
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}
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return min(iSize, pTarget - pBuf);
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}
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// returns -1 if whole line iz filled by zeros. Otherwise 0.
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static inline int line_is_empty(const unsigned char *pBuf, unsigned iSize) {
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int i;
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for (i = 0; i < iSize; ++i)
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if (pBuf[i])
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return 0;
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return -1;
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}
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static inline void send_raster(const unsigned char *pBuf, int width8,
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int height) {
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if (!height)
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return;
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DEBUGPRINT("Raster block %dx%d pixels\n", width8 * 8, height);
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sendRasterHeader(width8, height);
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outputarray((char *)pBuf, width8 * height);
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flushBuffer();
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}
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#define EXITPRINT(CODE) \
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{ \
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if (pRasterSrc) \
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cupsRasterClose(pRasterSrc); \
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if (pRasterBuf) \
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free(pRasterBuf); \
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if (fd) \
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close(fd); \
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return (CODE); \
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}
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//////////////////////////////////////////////
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//////////////////////////////////////////////
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int main(int argc, char *argv[]) {
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signal(SIGPIPE, SIG_IGN);
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if (argc < 6 || argc > 7) {
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fputs("ERROR: rastertocpi job-id user title copies options [file]\n",
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stderr);
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return EXIT_FAILURE;
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}
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int fd = STDIN_FILENO; // File descriptor providing CUPS raster data
|
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if (argc == 7) {
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if ((fd = open(argv[6], O_RDONLY)) == -1) {
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perror("ERROR: Unable to open raster file - ");
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sleep(1);
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return EXIT_FAILURE;
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}
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}
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DEBUGSTARTPRINT();
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int iCurrentPage = 0;
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// CUPS Page tHeader
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cups_page_header2_t tHeader;
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unsigned char *pRasterBuf = NULL; // Pointer to raster data from CUPS
|
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// Raster stream for printing
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cups_raster_t *pRasterSrc = cupsRasterOpen(fd, CUPS_RASTER_READ);
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initializeSettings(argv[5],&settings);
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DEBUGPRINT("ModelNumber from PPD '%d'\n", settings.modelNum);
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// set max num of pixels per line depended from model number (from ppd)
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||||
int iMaxWidth = settings.modelNum;
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if (!iMaxWidth)
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iMaxWidth = 0x180;
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// postpone start of the job until we parse first header and get necessary values from there.
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int iJobStarted = 0;
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// loop over the whole raster, page by page
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while (cupsRasterReadHeader2(pRasterSrc, &tHeader)) {
|
||||
if ((!tHeader.cupsHeight) || (!tHeader.cupsBytesPerLine))
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break;
|
||||
|
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update_settings_from_job( &tHeader );
|
||||
|
||||
if (!iJobStarted)
|
||||
{
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||||
setupJob();
|
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iJobStarted = 1;
|
||||
}
|
||||
|
||||
DebugPrintHeader ( &tHeader );
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||||
|
||||
if (!pRasterBuf) {
|
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pRasterBuf = malloc(tHeader.cupsBytesPerLine * 24);
|
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if (!pRasterBuf) // hope it never goes here...
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||||
EXITPRINT(EXIT_FAILURE)
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||||
}
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||||
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fprintf(stderr, "PAGE: %d %d\n", ++iCurrentPage, tHeader.NumCopies);
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||||
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startPage();
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||||
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// calculate num of bytes to print given width having 1 bit per pixel.
|
||||
int foo = min(tHeader.cupsWidth, iMaxWidth); // 0x180 for 58mm (48mm printable)
|
||||
foo = (foo + 7) & 0xFFFFFFF8;
|
||||
int width_bytes = foo >> 3; // in bytes, [0..0x30]
|
||||
|
||||
DEBUGPRINT("cupsWidth=%d, cupsBytesPerLine=%d; foo=%d, width_bytes=%d",
|
||||
tHeader.cupsWidth, tHeader.cupsBytesPerLine, foo, width_bytes );
|
||||
|
||||
int iRowsToPrint = tHeader.cupsHeight;
|
||||
int zeroy = 0;
|
||||
|
||||
// loop over one page, top to bottom by blocks of most 24 scan lines
|
||||
while (iRowsToPrint) {
|
||||
fprintf(stderr, "INFO: Printing iCurrentPage %d, %d%% complete...\n",
|
||||
iCurrentPage,
|
||||
(100 * (tHeader.cupsHeight - iRowsToPrint) / tHeader.cupsHeight));
|
||||
|
||||
int iBlockHeight = min(iRowsToPrint, 24);
|
||||
|
||||
DEBUGPRINT("--------Processing block of %d, starting from %d lines",
|
||||
iBlockHeight, tHeader.cupsHeight - iRowsToPrint);
|
||||
|
||||
iRowsToPrint -= iBlockHeight;
|
||||
unsigned iBytesChunk = 0;
|
||||
|
||||
// first, fetch whole block from the image
|
||||
if (iBlockHeight)
|
||||
iBytesChunk = cupsRasterReadPixels(
|
||||
pRasterSrc, pRasterBuf, tHeader.cupsBytesPerLine * iBlockHeight);
|
||||
|
||||
DEBUGPRINT("--------Got %d from %d requested bytes",
|
||||
iBytesChunk,
|
||||
tHeader.cupsBytesPerLine *
|
||||
iBlockHeight);
|
||||
|
||||
// if original image is wider - rearrange buffer so that our calculated
|
||||
// lines come one-by-one without extra gaps
|
||||
if (width_bytes < tHeader.cupsBytesPerLine) {
|
||||
DEBUGPRINT("--------Compress line from %d to %d bytes", tHeader.cupsBytesPerLine, width_bytes);
|
||||
iBytesChunk = compress_buffer(pRasterBuf, iBytesChunk,
|
||||
tHeader.cupsBytesPerLine, width_bytes);
|
||||
}
|
||||
|
||||
// runaround for sometimes truncated output of cupsRasterReadPixels
|
||||
if (iBytesChunk < width_bytes * iBlockHeight) {
|
||||
DEBUGPRINT("--------Restore truncated gap of %d bytes",
|
||||
width_bytes * iBlockHeight - iBytesChunk);
|
||||
memset(pRasterBuf + iBytesChunk, 0,
|
||||
width_bytes * iBlockHeight - iBytesChunk);
|
||||
iBytesChunk = width_bytes * iBlockHeight;
|
||||
}
|
||||
|
||||
// lazy output of current raster. First check current line if it is zero.
|
||||
// if there were many zeroes and met non-zero - flush zeros by 'feed' cmd
|
||||
// if opposite - send non-zero chunk as raster.
|
||||
unsigned char *pBuf = pRasterBuf;
|
||||
unsigned char *pChunk = pBuf;
|
||||
const unsigned char *pEnd = pBuf + iBytesChunk;
|
||||
int nonzerolines = 0;
|
||||
while ( pBuf<pEnd ) {
|
||||
if (line_is_empty(pBuf, width_bytes)) {
|
||||
if (nonzerolines) { // met zero, need to flush collected raster
|
||||
send_raster(pChunk, width_bytes, nonzerolines);
|
||||
nonzerolines = 0;
|
||||
}
|
||||
++zeroy;
|
||||
} else {
|
||||
if (zeroy) { // met non-zero, need to feed calculated num of zero lines
|
||||
flushManyLines(zeroy);
|
||||
zeroy=0;
|
||||
}
|
||||
if (!nonzerolines)
|
||||
pChunk = pBuf;
|
||||
++nonzerolines;
|
||||
}
|
||||
pBuf += width_bytes;
|
||||
}
|
||||
send_raster(pChunk, width_bytes, nonzerolines);
|
||||
//flushBuffer();
|
||||
} // loop over page
|
||||
|
||||
// page is finished.
|
||||
// m.b. we have to print empty tail at the end
|
||||
if (settings.InsertSheet)
|
||||
flushManyLines (zeroy);
|
||||
|
||||
if (settings.AdvanceMedia == CUPS_ADVANCE_PAGE)
|
||||
flushManyLines(settings.AdvanceDistance);
|
||||
|
||||
if (settings.CutMedia == CUPS_CUT_PAGE)
|
||||
cutMedia();
|
||||
|
||||
finishPage();
|
||||
} // loop over all pages pages
|
||||
|
||||
if (settings.AdvanceMedia==CUPS_ADVANCE_JOB)
|
||||
flushManyLines(settings.AdvanceDistance);
|
||||
|
||||
if (settings.CutMedia == CUPS_CUT_JOB)
|
||||
cutMedia();
|
||||
|
||||
finalizeJob();
|
||||
fputs(iCurrentPage ? "INFO: Ready to print.\n" : "ERROR: No pages found!\n",
|
||||
stderr);
|
||||
DEBUGFINISHPRINT();
|
||||
EXITPRINT(iCurrentPage ? EXIT_SUCCESS : EXIT_FAILURE)
|
||||
}
|
||||
|
||||
// end of rastertocpi.c
|
||||
Reference in New Issue
Block a user