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82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
// This example uses gstreamer's discoverer api.
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//
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// https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/GstDiscoverer.html
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// To detect as much information from a given URI.
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// The amount of time that the discoverer is allowed to use is limited by a timeout.
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// This allows to handle e.g. network problems gracefully. When the timeout hits before
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// discoverer was able to detect anything, discoverer will report an error.
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// In this example, we catch this error and stop the application.
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// Discovered information could for example contain the stream's duration or whether it is
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// seekable (filesystem) or not (some http servers).
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package main
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import (
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"fmt"
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"os"
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"time"
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"github.com/go-gst/go-gst/gst"
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"github.com/go-gst/go-gst/gst/pbutils"
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)
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func main() {
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gst.Init(nil)
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if len(os.Args) < 2 {
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fmt.Printf("USAGE: %s <uri>\n", os.Args[0])
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os.Exit(1)
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}
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uri := os.Args[1]
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discoverer, err := pbutils.NewDiscoverer(gst.ClockTime(time.Second * 15))
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if err != nil {
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fmt.Println("ERROR:", err)
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os.Exit(2)
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}
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info, err := discoverer.DiscoverURI(uri)
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if err != nil {
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fmt.Println("ERROR:", err)
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os.Exit(3)
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}
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printDiscovererInfo(info)
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}
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func printDiscovererInfo(info *pbutils.DiscovererInfo) {
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fmt.Println("URI:", info.GetURI())
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fmt.Println("Duration:", info.GetDuration())
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printTags(info)
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printStreamInfo(info.GetStreamInfo())
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children := info.GetStreamList()
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fmt.Println("Children streams:")
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for _, child := range children {
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printStreamInfo(child)
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}
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}
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func printTags(info *pbutils.DiscovererInfo) {
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fmt.Println("Tags:")
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tags := info.GetTags()
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if tags != nil {
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fmt.Println(" ", tags)
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return
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}
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fmt.Println(" no tags")
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}
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func printStreamInfo(info *pbutils.DiscovererStreamInfo) {
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if info == nil {
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return
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}
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fmt.Println("Stream: ")
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fmt.Println(" Stream id:", info.GetStreamID())
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if caps := info.GetCaps(); caps != nil {
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fmt.Println(" Format:", caps)
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}
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}
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