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authorTomi Valkeinen <tomi.valkeinen@ti.com>2016-06-20 08:53:36 +0300
committerTomi Valkeinen <tomi.valkeinen@ti.com>2016-06-20 08:53:36 +0300
commitc1138d9e30a3426a1d734c1de28218102bcb05d4 (patch)
treeac73959ce506b4a21c26edc3cc1503223ff446b4 /py/cam.py
parent33c98598a79b8cd15ded9c91b0bc580fe1ed6fb9 (diff)
parent6f5d1817fdb305b9f63a5e8abfbcf46da41d3245 (diff)
Merge V4L2 related work
Diffstat (limited to 'py/cam.py')
-rwxr-xr-xpy/cam.py78
1 files changed, 78 insertions, 0 deletions
diff --git a/py/cam.py b/py/cam.py
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index 0000000..b44f8f9
--- /dev/null
+++ b/py/cam.py
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+#!/usr/bin/python3
+
+import sys
+import selectors
+import pykms
+from helpers import *
+
+
+w = 640
+h = 480
+fmt = pykms.PixelFormat.YUYV
+
+
+# This hack makes drm initialize the fbcon, setting up the default connector
+card = pykms.Card()
+card = 0
+
+card = pykms.Card()
+res = pykms.ResourceManager(card)
+conn = res.reserve_connector()
+crtc = res.reserve_crtc(conn)
+plane = res.reserve_overlay_plane(crtc, fmt)
+
+mode = conn.get_default_mode()
+
+NUM_BUFS = 5
+
+fbs = []
+for i in range(NUM_BUFS):
+ fb = pykms.DumbFramebuffer(card, w, h, fmt)
+ fbs.append(fb)
+
+vidpath = pykms.VideoDevice.get_capture_devices()[0]
+
+vid = pykms.VideoDevice(vidpath)
+cap = vid.capture_streamer
+cap.set_port(0)
+cap.set_format(fmt, w, h)
+cap.set_queue_size(NUM_BUFS)
+
+for fb in fbs:
+ cap.queue(fb)
+
+cap.stream_on()
+
+
+def readvid(conn, mask):
+ fb = cap.dequeue()
+
+ if card.has_atomic:
+ set_props(plane, {
+ "FB_ID": fb.id,
+ "CRTC_ID": crtc.id,
+ "SRC_W": fb.width << 16,
+ "SRC_H": fb.height << 16,
+ "CRTC_W": fb.width,
+ "CRTC_H": fb.height,
+ })
+ else:
+ crtc.set_plane(plane, fb, 0, 0, fb.width, fb.height,
+ 0, 0, fb.width, fb.height)
+
+ cap.queue(fb)
+
+def readkey(conn, mask):
+ #print("KEY EVENT");
+ sys.stdin.readline()
+ exit(0)
+
+sel = selectors.DefaultSelector()
+sel.register(cap.fd, selectors.EVENT_READ, readvid)
+sel.register(sys.stdin, selectors.EVENT_READ, readkey)
+
+while True:
+ events = sel.select()
+ for key, mask in events:
+ callback = key.data
+ callback(key.fileobj, mask)