71 lines
1.1 KiB
Go
71 lines
1.1 KiB
Go
package skills
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import (
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"bufio"
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"bytes"
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"os/exec"
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"regexp"
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"strings"
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)
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// DevicesV4L returns a list of available V4L devices
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func DevicesV4L() ([]HWDevice, error) {
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devices := []HWDevice{}
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buf := bytes.NewBuffer(nil)
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cmd := exec.Command("v4l2-ctl", "--list-devices")
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cmd.Env = []string{}
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cmd.Stdout = buf
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cmd.Run()
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devices = parseV4LDevices(buf)
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return devices, nil
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}
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func parseV4LDevices(data *bytes.Buffer) []HWDevice {
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devices := []HWDevice{}
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reName := regexp.MustCompile(`^(.*)\((.*?)\):$`)
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reDevice := regexp.MustCompile(`/dev/video[0-9]+`)
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name := ""
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extra := ""
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scanner := bufio.NewScanner(data)
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scanner.Split(bufio.ScanLines)
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for scanner.Scan() {
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line := scanner.Text()
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matches := reDevice.FindStringSubmatch(line)
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if matches == nil {
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matches = reName.FindStringSubmatch(line)
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if matches == nil {
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continue
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}
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name = strings.TrimSpace(matches[1])
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extra = matches[2]
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continue
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}
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if name == "" {
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continue
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}
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device := HWDevice{
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Id: matches[0],
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Name: name,
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Extra: extra,
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Media: "video",
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}
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devices = append(devices, device)
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}
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return devices
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}
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