[mythtv-users] Crystalhd BCM70012

Jarod Wilson jarod at wilsonet.com
Sat Jun 4 17:42:39 UTC 2011

On Jun 4, 2011, at 11:09 AM, Ken Mandelberg wrote:

> mythtv-users-request at mythtv.org wrote, On 06/02/2011 05:19 PM:
>> From: Tyler T<tylernt at gmail.com>
>> Subject: Re: [mythtv-users] Crystalhd BCM70012
>> Robert McNamara has said:
>>>> Off topic, but worth clarifying: .24 contains CrystalHD support, and
>>>> the only thing outstanding there is bugs with the driver/firmware
>>>> which Myth devs have reported (multiple times) to the Broadcom devs
>>>> with pretty much no response.  Broadcom's interest in making the linux
>>>> driver work as well as the Windows one appears to have dried up.
>>>> There's not much more we
> Does this refer to the BCM70012 specific issue? This is the older 
> CrystalHD chip that is purposely excluded in 
> privatedecoder_crystalhd.cpp in the trunk.
> Or is there more generally a CrystalHD driver problem that you are 
> referring to?

There are multiple issues here. The biggest is that Broadcom is not really
being very responsive with help these days, which has stalled efforts to
get the code for the '15 finished off. That has in turn decreased interest
in working on support for the '12, since it'll likely run into the same
sorts of issues. Further, there's work going on in ffmpeg to support both
revisions of the hardware, so at some point, mythtv's crystalhd support
will likely be replaced by ffmpeg's support. Duplicating that effort when
its likely to be thrown out, if ever even functional, isn't the best use of
developer time, so developers are working on other things right now. And to
top it off, the ffmpeg support is equally stalled on some decoder pipeline
issues, waiting indefinitely on help from Broadcom.

Basically, the '15 will mostly work with many encodings, notsomuch with
others, and don't expect '12 support, or even full non-tech-preview '15
support, any time in the immediate future. :(

Jarod Wilson
jarod at wilsonet.com

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