mirror of
https://github.com/pion/mediadevices.git
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2f5e4ee914
Changelog: * Better support for non-webrtc use cases * Enable multiple readers * Enhance codec selectors * Update APIs to reflect on the new v3 webrtc design * Cleaner APIs
78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// This is an example of using mediadevices to broadcast your camera through http.
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// The example doesn't aim to be performant, but rather it strives to be simple.
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package main
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import (
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"bytes"
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"fmt"
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"image/jpeg"
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"io"
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"log"
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"mime/multipart"
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"net/http"
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"net/textproto"
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"github.com/pion/mediadevices"
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"github.com/pion/mediadevices/pkg/prop"
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// Note: If you don't have a camera or microphone or your adapters are not supported,
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// you can always swap your adapters with our dummy adapters below.
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// _ "github.com/pion/mediadevices/pkg/driver/videotest"
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_ "github.com/pion/mediadevices/pkg/driver/camera" // This is required to register camera adapter
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)
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func must(err error) {
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if err != nil {
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panic(err)
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}
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}
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func main() {
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s, err := mediadevices.GetUserMedia(mediadevices.MediaStreamConstraints{
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Video: func(constraint *mediadevices.MediaTrackConstraints) {
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constraint.Width = prop.Int(600)
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constraint.Height = prop.Int(400)
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},
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})
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must(err)
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t := s.GetVideoTracks()[0]
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videoTrack := t.(*mediadevices.VideoTrack)
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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var buf bytes.Buffer
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videoReader := videoTrack.NewReader(false)
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mimeWriter := multipart.NewWriter(w)
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contentType := fmt.Sprintf("multipart/x-mixed-replace;boundary=%s", mimeWriter.Boundary())
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w.Header().Add("Content-Type", contentType)
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partHeader := make(textproto.MIMEHeader)
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partHeader.Add("Content-Type", "image/jpeg")
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for {
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frame, release, err := videoReader.Read()
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if err == io.EOF {
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return
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}
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must(err)
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err = jpeg.Encode(&buf, frame, nil)
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// Since we're done with img, we need to release img so that that the original owner can reuse
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// this memory.
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release()
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must(err)
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partWriter, err := mimeWriter.CreatePart(partHeader)
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must(err)
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_, err = partWriter.Write(buf.Bytes())
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buf.Reset()
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must(err)
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}
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})
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fmt.Println("listening on http://localhost:1313")
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log.Println(http.ListenAndServe("localhost:1313", nil))
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}
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