GStreamer » Historique » Version 3
P.G Bareges, 25/02/2013 22:17
| 1 | 1 | P.G Bareges | h1. GStreamer |
|---|---|---|---|
| 2 | 1 | P.G Bareges | |
| 3 | 1 | P.G Bareges | |
| 4 | 2 | P.G Bareges | h2. command line |
| 5 | 3 | P.G Bareges | |
| 6 | 3 | P.G Bareges | |
| 7 | 2 | P.G Bareges | h3. simple theora encoding stream over udp |
| 8 | 1 | P.G Bareges | |
| 9 | 3 | P.G Bareges | *nécessite de lancer le receiver avant le sender... |
| 10 | 3 | P.G Bareges | *reprise possible du flux d'émission apres l'initialisation des 2 pipelines (sender/receive) |
| 11 | 3 | P.G Bareges | *ne marche pas sous windows. |
| 12 | 3 | P.G Bareges | |
| 13 | 1 | P.G Bareges | <pre> |
| 14 | 1 | P.G Bareges | Sender : |
| 15 | 1 | P.G Bareges | gst-launch-0.10 -v v4l2src device=/dev/video0 ! \ |
| 16 | 1 | P.G Bareges | 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! \ |
| 17 | 1 | P.G Bareges | theoraenc ! udpsink host=10.20.0.62 port=1234 |
| 18 | 1 | P.G Bareges | |
| 19 | 1 | P.G Bareges | Receiver : |
| 20 | 1 | P.G Bareges | gst-launch-0.10 -v udpsrc port=1234 \ |
| 21 | 1 | P.G Bareges | caps="video/x-theora, width=640, height=480, framerate=30/1, pixel-aspect-ratio=1/1" ! \ |
| 22 | 1 | P.G Bareges | theoradec ! xvimagesink |
| 23 | 1 | P.G Bareges | |
| 24 | 1 | P.G Bareges | stats on i7-2620M |
| 25 | 1 | P.G Bareges | |
| 26 | 1 | P.G Bareges | ps -eo psr,pid,tid,class,rtprio,ni,pri,pcpu,stat,wchan:14,comm | grep [g]st |
| 27 | 1 | P.G Bareges | 3 23360 23360 TS - 0 19 8.6 Sl+ poll_schedule_ gst-launch-0.10 |
| 28 | 2 | P.G Bareges | 2 23363 23363 TS - 0 19 47.8 Sl+ poll_schedule_ gst-launch-0.10 |
| 29 | 1 | P.G Bareges | |
| 30 | 1 | P.G Bareges | </pre> |
| 31 | 1 | P.G Bareges | |
| 32 | 3 | P.G Bareges | |
| 33 | 2 | P.G Bareges | h3. rtp |
| 34 | 2 | P.G Bareges | |
| 35 | 3 | P.G Bareges | *le serveur envoie ses caps toute les 5 secondes via config-interval=5 |
| 36 | 3 | P.G Bareges | *marche sous windows \o/ :) |
| 37 | 2 | P.G Bareges | |
| 38 | 2 | P.G Bareges | <pre> |
| 39 | 2 | P.G Bareges | |
| 40 | 2 | P.G Bareges | sender: |
| 41 | 2 | P.G Bareges | |
| 42 | 2 | P.G Bareges | gst-launch-0.10 -v v4l2src device=/dev/video0 ! 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! theoraenc ! rtptheorapay config-interval=5 ! udpsink host=10.20.0.62 port=1234 |
| 43 | 2 | P.G Bareges | |
| 44 | 2 | P.G Bareges | receiver : |
| 45 | 2 | P.G Bareges | |
| 46 | 2 | P.G Bareges | gst-launch-0.10 -v udpsrc port=1234 caps="application/x-rtp" ! rtptheoradepay ! theoradec ! xvimagesink |
| 47 | 2 | P.G Bareges | |
| 48 | 2 | P.G Bareges | </pre> |
| 49 | 2 | P.G Bareges | |
| 50 | 2 | P.G Bareges | |
| 51 | 2 | P.G Bareges | |
| 52 | 1 | P.G Bareges | h2. Processing |
| 53 | 1 | P.G Bareges | |
| 54 | 1 | P.G Bareges | <pre> |
| 55 | 1 | P.G Bareges | /** |
| 56 | 1 | P.G Bareges | * Ripped from |
| 57 | 1 | P.G Bareges | * Camera capture pipelines. |
| 58 | 1 | P.G Bareges | * By Andres Colubri |
| 59 | 1 | P.G Bareges | * |
| 60 | 1 | P.G Bareges | * |
| 61 | 1 | P.G Bareges | */ |
| 62 | 1 | P.G Bareges | |
| 63 | 1 | P.G Bareges | import codeanticode.gsvideo.*; |
| 64 | 1 | P.G Bareges | |
| 65 | 1 | P.G Bareges | GSPipeline pipeline; |
| 66 | 1 | P.G Bareges | |
| 67 | 1 | P.G Bareges | void setup() { |
| 68 | 1 | P.G Bareges | size(640, 480); |
| 69 | 1 | P.G Bareges | frameRate(30); |
| 70 | 1 | P.G Bareges | pipeline = new GSPipeline(this, "udpsrc port=1234 caps=\"video/x-theora, width=640, height=480, framerate=30/1, pixel-aspect-ratio=1/1\" ! theoradec "); |
| 71 | 1 | P.G Bareges | pipeline.play(); |
| 72 | 1 | P.G Bareges | } |
| 73 | 1 | P.G Bareges | |
| 74 | 1 | P.G Bareges | void draw() { |
| 75 | 1 | P.G Bareges | // When the GSPipeline.available() method returns true, |
| 76 | 1 | P.G Bareges | // it means that a new frame is ready to be read. |
| 77 | 1 | P.G Bareges | if (pipeline.available()) { |
| 78 | 1 | P.G Bareges | pipeline.read(); |
| 79 | 1 | P.G Bareges | image(pipeline, 0, 0); |
| 80 | 1 | P.G Bareges | } |
| 81 | 1 | P.G Bareges | } |
| 82 | 1 | P.G Bareges | |
| 83 | 1 | P.G Bareges | |
| 84 | 1 | P.G Bareges | </pre> |
| 85 | 1 | P.G Bareges | |
| 86 | 1 | P.G Bareges | |
| 87 | 1 | P.G Bareges | h2. Liens |
| 88 | 1 | P.G Bareges | |
| 89 | 2 | P.G Bareges | |
| 90 | 2 | P.G Bareges | |
| 91 | 2 | P.G Bareges | *http://gsvideo.sourceforge.net/ |
| 92 | 2 | P.G Bareges | *http://wiki.oz9aec.net/index.php/Gstreamer_cheat_sheet |
| 93 | 2 | P.G Bareges | *http://lists.freedesktop.org/archives/gstreamer-devel/2011-July/032234.html |