diff options
Diffstat (limited to 'src/monitor.py')
| -rw-r--r-- | src/monitor.py | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/monitor.py b/src/monitor.py index fa3d4c5..78eb59b 100644 --- a/src/monitor.py +++ b/src/monitor.py @@ -498,6 +498,33 @@ class Output: return '[Name: %s, Connected: %s, Width: %s, Height: %s, CRTC: %s, Screen: %s, EDID: %s]' % rc +class EDID: # TODO demo and document this + def __init__(self, edid): + if not len(edid) == 256: + raise Exception('EDID version not support, length mismatch') + if not edid[:16].upper() == '00FFFFFFFFFFFF00': + raise Exception('EDID version not support, magic number mismatch') + edid = [int(edid[i * 2 : i * 2 + 2], 16) for i in range(128)] + if not edid[18] == 1: + raise Exception('EDID version not support, version mismatch, only 1.3 supported') + if not edid[19] == 3: + raise Exception('EDID version not support, revision mismatch, only 1.3 supported') + self.widthmm = edid[21] * 10 + self.heightmm = edid[22] * 10 + if (self.widthmm == 0) or (self.heightmm == 0): + self.widthmm = None + self.heightmm = None + if (edid[23] == 255): + self.gamma = None + self.gamma_correction = None + else: + self.gamma = (edid[23] + 100) / 100 + self.gamma_correction = self.gamma / 2.2 + if not sum(edid) % 256 == 0: + raise Exception('Incorrect EDID checksum') + + + def list_screens(method = 'randr', display = None): ''' Retrieve informantion about all screens, outputs and CRTC:s |