Commit main files and add usage

main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"image/jpeg"
+	"log"
+	"net/http"
+	"syscall"
+
+	// "github.com/garymcbay/mjpeg"
+	"github.com/google/gousb"
+	"github.com/kevmo314/go-uvc"
+	"github.com/kevmo314/go-uvc/pkg/descriptors"
+)
+
+func getdevice() (device string) {
+	ctx := gousb.NewContext()
+	defer ctx.Close()
+	dev, err := ctx.OpenDeviceWithVIDPID(0x35bd, 0x0202)
+	if err != nil {
+		log.Fatalf("Could not open a device: %v", err)
+	}
+	defer dev.Close()
+	return fmt.Sprintf("/dev/bus/usb/%03v/%03v", dev.Desc.Bus, dev.Desc.Address)
+}
+
+func main() {
+	stream := NewStream()
+	device := getdevice()
+	// Pass your jpegBuffer frames using stream.UpdateJPEG(<your-buffer>)
+	go imagestreamer(stream, device)
+	mux := http.NewServeMux()
+	mux.Handle("/stream", stream)
+	log.Fatal(http.ListenAndServe(":8080", mux))
+
+}
+
+func imagestreamer(stream *Stream, device string) {
+	fd, err := syscall.Open(device, syscall.O_RDWR, 0)
+	if err != nil {
+		panic(err)
+	}
+	ctx, err := uvc.NewUVCDevice(uintptr(fd))
+	if err != nil {
+		panic(err)
+	}
+
+	info, err := ctx.DeviceInfo()
+	if err != nil {
+		panic(err)
+	}
+	for _, iface := range info.StreamingInterfaces {
+
+		for i, desc := range iface.Descriptors {
+			fd, ok := desc.(*descriptors.MJPEGFormatDescriptor)
+			if !ok {
+				continue
+			}
+			frd := iface.Descriptors[i+1].(*descriptors.MJPEGFrameDescriptor)
+
+			resp, err := iface.ClaimFrameReader(fd.Index(), frd.Index())
+			if err != nil {
+				panic(err)
+			}
+			for i := 0; ; i++ {
+				fr, err := resp.ReadFrame()
+				if err != nil {
+					panic(err)
+				}
+				img, err := jpeg.Decode(fr)
+				if err != nil {
+					continue
+				}
+				jpegbuf := new(bytes.Buffer)
+
+				if err = jpeg.Encode(jpegbuf, img, nil); err != nil {
+					log.Printf("failed to encode: %v", err)
+				}
+				// boundry := ("--frame-boundary\r\nContent-Type: image/jpeg\r\nContent-Length: " + strconv.Itoa(len(jpegbuf.Bytes())) + "\r\n\r\n")
+				// stream.UpdateJPEG(append([]byte(boundry), jpegbuf.Bytes()...))
+				stream.UpdateJPEG(jpegbuf.Bytes())
+			}
+		}
+	}
+}