add GStreamer helper scripts
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scripts/README.md
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151
scripts/README.md
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# VizionStreamer Control Scripts
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Diese Scripts ermöglichen die schnelle Steuerung von VizionStreamer über die Unix Domain Socket API.
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## Voraussetzung
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VizionStreamer muss laufen:
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```bash
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cd /home/maik/CLionProjects/vizionStreamer
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./build/vizionStreamer
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```
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## Schnellstart (Standard-Pipeline)
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Die Standard-Pipeline `videoconvert ! autovideosink` ist bereits gesetzt. Einfach starten:
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```bash
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./scripts/start_stream.sh
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```
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Das Video wird lokal angezeigt. Zum Stoppen:
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```bash
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./scripts/stop_stream.sh
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```
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## Pipeline ändern
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### Lokale Anzeige (Standard)
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```bash
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./scripts/set_pipeline_display.sh
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./scripts/start_stream.sh
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```
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### UDP-Streaming (H.264)
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```bash
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# Standard: 192.168.1.100:5000
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./scripts/set_pipeline_udp.sh
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# Eigene IP/Port
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./scripts/set_pipeline_udp.sh 192.168.1.50 5001
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# Dann starten
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./scripts/start_stream.sh
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```
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**Stream empfangen:**
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```bash
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gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,encoding-name=H264 ! rtph264depay ! h264parse ! avdec_h264 ! videoconvert ! autovideosink
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```
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### Aufnahme in Datei
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```bash
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# Standard: /tmp/vizion_recording.mp4
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./scripts/set_pipeline_file.sh
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# Eigene Datei
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./scripts/set_pipeline_file.sh /home/user/videos/recording.mp4
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# Dann starten
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./scripts/start_stream.sh
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```
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### MJPEG HTTP-Stream
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```bash
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# Standard: Port 8080
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./scripts/set_pipeline_mjpeg.sh
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# Eigener Port
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./scripts/set_pipeline_mjpeg.sh 8090
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# Dann starten
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./scripts/start_stream.sh
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```
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**Stream ansehen:**
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```bash
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# Im Browser
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firefox http://localhost:8080
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# Mit FFplay
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ffplay http://localhost:8080
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```
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## Status & Information
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### Status abfragen
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```bash
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./scripts/get_status.sh
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```
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Zeigt:
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- Streaming-Status (läuft/gestoppt)
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- Aktuelle Pipeline
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### Verfügbare Formate
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```bash
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./scripts/get_formats.sh
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```
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Zeigt alle verfügbaren Kamera-Auflösungen und Formate.
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## Typischer Workflow
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```bash
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# 1. VizionStreamer starten (Terminal 1)
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./build/vizionStreamer
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# 2. Status prüfen (Terminal 2)
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./scripts/get_status.sh
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# 3. Pipeline für UDP-Streaming setzen
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./scripts/set_pipeline_udp.sh 192.168.1.100 5000
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# 4. Streaming starten
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./scripts/start_stream.sh
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# 5. Stream empfangen (auf Zielrechner)
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gst-launch-1.0 udpsrc port=5000 ! application/x-rtp,encoding-name=H264 ! rtph264depay ! h264parse ! avdec_h264 ! videoconvert ! autovideosink
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# 6. Bei Bedarf stoppen
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./scripts/stop_stream.sh
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# 7. Pipeline ändern
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./scripts/set_pipeline_display.sh
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# 8. Erneut starten
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./scripts/start_stream.sh
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```
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## Wichtige Hinweise
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- Pipeline kann nur geändert werden, wenn Streaming gestoppt ist
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- Standard-Pipeline ist bereits gesetzt - kein `set_pipeline` vor dem ersten Start nötig
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- Mit `start_stream.sh` sofort loslegen!
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- Alle Scripts benötigen `socat` (installieren mit: `sudo apt install socat`)
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- Status-Scripts benötigen optional `python3` für formatierte JSON-Ausgabe
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## Eigene Pipelines
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Sie können jede beliebige GStreamer-Pipeline verwenden:
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```bash
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SOCKET="/tmp/vizion_control.sock"
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echo '{"command":"set_pipeline","params":{"pipeline":"IHRE_PIPELINE"}}' | socat - UNIX-CONNECT:$SOCKET
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```
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Beispiele:
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- `videoconvert ! xvimagesink` - Einfache lokale Anzeige
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- `videoconvert ! x264enc ! flvmux ! rtmpsink location=rtmp://server/live/stream` - RTMP-Streaming
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- `tee name=t ! queue ! videoconvert ! autovideosink t. ! queue ! x264enc ! filesink location=out.mp4` - Gleichzeitig anzeigen und aufnehmen
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