Thijs/label_printer
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Working cut, text, and image through bridge

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This commit is contained in:
TT-392 2024-09-15 17:46:04 +02:00
parent 10d218bfba
commit 78456105ac
4 changed files with 45 additions and 130 deletions
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1
.gitignore vendored
View file

@ -1,4 +1,5 @@
*.so
*.h
*.swp
*/__pycache__
flask/static

78
library_bridge.go
View file

@ -2,21 +2,22 @@ package main
import (
"fmt"
_ "image"
_ "time"
"image"
_ "image/gif"
_ "image/jpeg"
_ "image/png"
"log"
_ "os"
"os"
"unsafe"
"bytes"
_ "github.com/jbuchbinder/gopnm"
_ "golang.org/x/image/webp"
_ "github.com/lestrrat-go/dither"
_ "github.com/nfnt/resize"
"git.sr.ht/~guacamolie/faxmachine/escpos"
"git.sr.ht/~guacamolie/faxmachine/escpos/protocol"
)
import "C"
@ -47,17 +48,27 @@ func printer_init(path string, speed int) (*escpos.Printer) {
return p
}
func printer_close(p *escpos.Printer) {
if err = p.Wait(); err != nil {
log.Fatalf("failed to print: %v\n", err)
}
if err = p.Close(); err != nil {
log.Fatalf("failed to close printer: %v\n", err)
}
fmt.Print("printer closed\n");
}
//export cut
func cut(path *C.char) {
fmt.Print("Starting cut\n");
p := printer_init(C.GoString(path), 1)
if err = p.CutPaper(); err != nil {
log.Fatalf("failed to cut paper: %v", err)
}
if err = p.Wait(); err != nil {
log.Fatalf("failed to print: %v\n", err)
}
printer_close(p)
//time.Sleep(1000 * time.Millisecond)
}
//export print_text
@ -67,57 +78,38 @@ func print_text(path *C.char, str *C.char) {
fmt.Fprint(p, C.GoString(str))
fmt.Fprint(p, "\n")
if err = p.Wait(); err != nil {
log.Fatalf("failed to print: %v\n", err)
}
printer_close(p)
}
func printimg(path *C.char) {
p, err := escpos.StartUSBPrinter("/dev/usb/lp0", protocol.TMT88IV, escpos.FlagNone)
if err != nil {
log.Fatalf("failed to start printer: %v\n", err)
}
defer p.Close()
//export print_image
func print_image(path *C.char, data *C.uchar, size C.int) {
p := printer_init(C.GoString(path), 1)
if err := p.EnableASB(protocol.ASBReportAll); err != nil {
log.Fatalf("failed to enable ASB: %v\n", err)
}
go func() {
for status := range p.ASBStatus() {
log.Printf("received ASB status: %#v\n", status)
}
}()
//img, _, err := image.Decode(os.Stdin)
//if err != nil {
// log.Fatalf("failed to get decode image: %v\n", err)
//}
//img = resize.Resize(512, 0, img, resize.Lanczos3)
//img = dither.Monochrome(dither.FloydSteinberg, img, 1.18)
// if err := p.SetEncoding(escpos.CharPagePC427); err != nil {
// log.Fatalf("failed to set encoding: %v\n", err)
// }
if err := p.SetPrintSpeed(1); err != nil {
log.Fatalf("failed to set print speed: %v\n", err)
byteData := C.GoBytes(unsafe.Pointer(data), C.int(size))
imgReader := bytes.NewReader(byteData)
img, _, err := image.Decode(imgReader)
if err != nil {
log.Fatalf("failed to get decode image: %v\n", err)
}
if err := p.PrintImage(img); err != nil {
log.Fatalf("failed to print image: %v\n", err)
}
//if err := p.PrintImage(img); err != nil {
// log.Fatalf("failed to print image: %v\n", err)
//}
//if len(os.Args) > 2 && os.Args[2] != "" {
// fmt.Fprintf(p, "\n%s\n", os.Args[2])
//}
fmt.Fprint(p, "\n\n\n")
if err := p.CutPaper(); err != nil {
log.Fatalf("failed to cut paper: %v", err)
if len(os.Args) > 2 && os.Args[2] != "" {
fmt.Fprintf(p, "\n%s\n", os.Args[2])
}
if err := p.Wait(); err != nil {
log.Fatalf("failed to print: %v\n", err)
}
}
func main() {}

82
library_bridge.h
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@ -1,82 +0,0 @@
/* Code generated by cmd/cgo; DO NOT EDIT. */
/* package command-line-arguments */
#line 1 "cgo-builtin-export-prolog"
#include <stddef.h>
#ifndef GO_CGO_EXPORT_PROLOGUE_H
#define GO_CGO_EXPORT_PROLOGUE_H
#ifndef GO_CGO_GOSTRING_TYPEDEF
typedef struct { const char *p; ptrdiff_t n; } _GoString_;
#endif
#endif
/* Start of preamble from import "C" comments. */
/* End of preamble from import "C" comments. */
/* Start of boilerplate cgo prologue. */
#line 1 "cgo-gcc-export-header-prolog"
#ifndef GO_CGO_PROLOGUE_H
#define GO_CGO_PROLOGUE_H
typedef signed char GoInt8;
typedef unsigned char GoUint8;
typedef short GoInt16;
typedef unsigned short GoUint16;
typedef int GoInt32;
typedef unsigned int GoUint32;
typedef long long GoInt64;
typedef unsigned long long GoUint64;
typedef GoInt64 GoInt;
typedef GoUint64 GoUint;
typedef size_t GoUintptr;
typedef float GoFloat32;
typedef double GoFloat64;
#ifdef _MSC_VER
#include <complex.h>
typedef _Fcomplex GoComplex64;
typedef _Dcomplex GoComplex128;
#else
typedef float _Complex GoComplex64;
typedef double _Complex GoComplex128;
#endif
/*
static assertion to make sure the file is being used on architecture
at least with matching size of GoInt.
*/
typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1];
#ifndef GO_CGO_GOSTRING_TYPEDEF
typedef _GoString_ GoString;
#endif
typedef void *GoMap;
typedef void *GoChan;
typedef struct { void *t; void *v; } GoInterface;
typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
#endif
/* End of boilerplate cgo prologue. */
#ifdef __cplusplus
extern "C" {
#endif
extern void cut(char* path);
extern void print_text(char* path, char* str);
#ifdef __cplusplus
}
#endif

14
test.py
View file

@ -1,9 +1,13 @@
import ctypes
import time
mylib = ctypes.CDLL('./library_bridge.so')
epson = ctypes.CDLL('./library_bridge.so')
mylib.print_text("/dev/usb/lp0".encode('utf-8'), "test\n".encode('utf-8'))
mylib.print_text("/dev/usb/lp0".encode('utf-8'), "test\n".encode('utf-8'))
mylib.print_text("/dev/usb/lp0".encode('utf-8'), "test\n".encode('utf-8'))
#epson.cut(b"/dev/usb/lp0")
#epson.cut(b"/dev/usb/lp0")
#epson.print_text(b"/dev/usb/lp0", b"test\n")
data = open("/tmp/image.png", "rb").read()
#Bytes = (ctypes.c_ubyte * len(data))(*data)
mylib.cut("/dev/usb/lp0".encode('utf-8'))
epson.print_image(b"/dev/usb/lp0", data, len(data))
#epson.cut(b"/dev/usb/lp0")