py/tests/db.py

   1 #!/usr/bin/python3
   2
   3 import sys
   4 import pykms
   5 import selectors
   6
   7 bar_width = 20
   8 bar_speed = 8
   9
  10 class FlipHandler(pykms.PageFlipHandlerBase):
  11     def __init__(self):
  12         super().__init__()
  13         self.bar_xpos = 0
  14         self.front_buf = 0
  15         self.fb1 = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  16         self.fb2 = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
  17         self.flips = 0
  18         self.frames = 0
  19         self.time = 0
  20
  21     def handle_page_flip(self, frame, time):
  22         self.flips += 1
  23         if self.time == 0:
  24             self.frames = frame
  25             self.time = time
  26
  27         time_delta = time - self.time
  28         if time_delta >= 5:
  29             frame_delta = frame - self.frames
  30             print("Frame rate: %f (%u/%u frames in %f s)" %
  31                   (frame_delta / time_delta, self.flips, frame_delta, time_delta))
  32
  33             self.flips = 0
  34             self.frames = frame
  35             self.time = time
  36
  37         if self.front_buf == 0:
  38             fb = self.fb2
  39         else:
  40             fb = self.fb1
  41
  42         self.front_buf = self.front_buf ^ 1
  43
  44         current_xpos = self.bar_xpos;
  45         old_xpos = (current_xpos + (fb.width - bar_width - bar_speed)) % (fb.width - bar_width);
  46         new_xpos = (current_xpos + bar_speed) % (fb.width - bar_width);
  47
  48         self.bar_xpos = new_xpos
  49
  50         pykms.draw_color_bar(fb, old_xpos, new_xpos, bar_width)
  51
  52         if card.has_atomic:
  53             ctx = pykms.AtomicReq(card)
  54             ctx.add(crtc.primary_plane, "FB_ID", fb.id)
  55             ctx.commit(self)
  56         else:
  57             crtc.page_flip(fb, self)
  58
  59
  60 card = pykms.Card()
  61 res = pykms.ResourceManager(card)
  62 conn = res.reserve_connector()
  63 crtc = res.reserve_crtc(conn)
  64 mode = conn.get_default_mode()
  65
  66 fliphandler = FlipHandler()
  67
  68 crtc.set_mode(conn, fliphandler.fb1, mode)
  69
  70 fliphandler.handle_page_flip(0, 0)
  71
  72 def readdrm(fileobj, mask):
  73     #print("EVENT");
  74     card.call_page_flip_handlers()
  75
  76 def readkey(fileobj, mask):
  77     #print("KEY EVENT");
  78     sys.stdin.readline()
  79     exit(0)
  80
  81 sel = selectors.DefaultSelector()
  82 sel.register(card.fd, selectors.EVENT_READ, readdrm)
  83 sel.register(sys.stdin, selectors.EVENT_READ, readkey)
  84
  85 while True:
  86     events = sel.select()
  87     for key, mask in events:
  88         callback = key.data
  89         callback(key.fileobj, mask)