Bug 89348 - edid-decode reports sample rate units for bit rate
Summary: edid-decode reports sample rate units for bit rate
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: App/edid-decode (show other bugs)
Version: git
Hardware: All All
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-02-27 02:58 UTC by Kip Warner
Modified: 2018-08-13 17:50 UTC (History)
2 users (show)

See Also:
i915 platform:
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Attachments

Description Kip Warner 2015-02-27 02:58:12 UTC 
The edid-decode utility reports sample rate for non-LPCM Short Audio Descriptors it detects when it meant bit rate.

Consider the following:

./edid-decode /sys/class/drm/card0/card0-HDMI-A-3/edid
...
    DTS, max channels 7
    Supported sample rates (kHz): 48 44.1
    Maximum bit rate: 1016 kHz
...

The Maximum bit rate units should be kilobits per second (kb/s), and not a frequency (kHz). According to the specification for the EIA / CEA-861 Extension Block all non-LPCM formats have the third byte in the SAD's bits 7..0 designate the maximum supported bit rate divided by 8 kbits/s.

Lastly, I am sorry for not having selected edid-decode for component in the bug report, but I wasn't able to find it in the list.
Comment 1 Alan Coopersmith 2018-08-12 20:34:30 UTC 
Fixed in:
https://git.linuxtv.org/edid-decode.git/commit/?id=3b26b8a1a5a3c65caf9c6fd90f3e352e35e31441

Thanks for the report.
Comment 2 Kip Warner 2018-08-13 17:50:37 UTC 
Thanks Alan. Since the patch was trivial I probably should have done this back in 2015. At the time I just didn't have time. Glad to see it fixed though.

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