[Coco] RG6 video playback test

[Brett Gordon]

Something like this could be done for Jim's NIC card?  Most awesome Zipster!
On Apr 14, 2017 10:39 AM, "Zippster" <zippster278 at gmail.com> wrote:

> Yes, it’s pretty maxed out, but possible.
>
> - Ed
>
> > On Apr 14, 2017, at 8:42 AM, Brendan Donahe <brendan at polylith.com>
> wrote:
> >
> > Wow, it seems surprising that a CoCo 2 can do this, although I suppose
> > 6kbytes at 23fps = 138kbytes/second for the video part is within the
> realm
> > of possibility for assembly language on a .89MHz processor.
> >
> > Thanks for the explanation.
> >
> > Brendan
> >
> > On Fri, Apr 14, 2017 at 8:15 AM, Zippster <zippster278 at gmail.com> wrote:
> >
> >> Hi Brendan,
> >>
> >> It’s using raw data (pre-rendered), without any decoding, in a precisely
> >> timed
> >> sector read routine.  It requires only the video pages used (one at the
> >> moment)
> >> and a small 512 byte buffer for audio, outside of the player code itself
> >> of course.
> >>
> >> An optimal sector interleave format is required, but in this way,
> >> complexity of the
> >> image and file length do not matter.  Up to 3+ hours of continuous
> >> playback anyway,
> >> due to max file size.
> >>
> >> Right now there’s no screen buffering, so there’s some “tearing” when
> >> there’s large
> >> changes between frames (actually seeing the bytes being placed in video
> >> ram).
> >> Next I’ll implement screen buffering to eliminate that.
> >>
> >> - Ed
> >>
> >>
> >>
> >>> On Apr 14, 2017, at 7:17 AM, Brendan Donahe <brendan at polylith.com>
> >> wrote:
> >>>
> >>> Very impressive, Ed!
> >>>
> >>> Does this decoder apply "differences" to a single page of video or is
> it
> >>> capable of this frame rate simply by drawing the entire image on
> >>> alternating pages?  (Or perhaps it's a combination of the two?)
> >>>
> >>> Thanks for sharing!
> >>>
> >>> On Apr 14, 2017 7:01 AM, "Ron Klein" <ron at kdomain.org> wrote:
> >>>
> >>> Hi Ed,
> >>>
> >>> Now all we need is a mechanism to dump Youtube videos to the CocoSDC
> for
> >>> your player to stream!  :)
> >>>
> >>> Thanks, Ed!!!!
> >>>
> >>> -Ron
> >>>
> >>>
> >>>
> >>> On Thu, Apr 13, 2017 at 9:57 PM, Zippster <zippster278 at gmail.com>
> wrote:
> >>>
> >>>> Thanks Ron.
> >>>>
> >>>> I think we will end up with a pretty nifty little media player for
> >>>> the CoCo with several different video and audio formats.  :)
> >>>>
> >>>> - Ed
> >>>>
> >>>>
> >>>>
> >>>>> On Apr 13, 2017, at 9:44 PM, Ron Klein <ron at kdomain.org> wrote:
> >>>>>
> >>>>> Hi Ed,
> >>>>>
> >>>>> I can't believe this is running on a Coco 2.  Wow.
> >>>>>
> >>>>> I love seeing your progress with this!
> >>>>>
> >>>>> -Ron
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> On Thu, Apr 13, 2017 at 9:39 PM, Zippster <zippster278 at gmail.com>
> >> wrote:
> >>>>>
> >>>>>> Hi guys,
> >>>>>>
> >>>>>> Here is a video of RG6 video playback using a CoCo2 and the CoCo
> SDC.
> >>>>>> This is at 23fps, with 11.9KHz audio.  Double buffering is not
> >>>> implemented
> >>>>>> in
> >>>>>> the player yet, so there is tearing evident, but more great
> potential
> >>>> for
> >>>>>> some
> >>>>>> interesting media playback on the CoCo.  :)
> >>>>>>
> >>>>>> <https://drive.google.com/file/d/0B1sgl615FlGnbG9GNjVncVhEZWc/view
> <
> >>>>>> https://drive.google.com/file/d/0B1sgl615FlGnbG9GNjVncVhEZWc/view>>
> >>>>>>
> >>>>>>
> >>>>>> - Ed
> >>>>>>
> >>>>>> --
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> >>>>>>
> >>>>>
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> >>
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