[Coco] CoCo Video Player Project

[Allen Huffman]

Oh my. That big of a difference? Why is IDE slower?

Sent from my iPhone
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On Apr 3, 2009, at 8:24 AM, Mark Marlette <mmarlette at frontiernet.net>  
wrote:

>
> I don't recall the exact values but SCSI was about twice as fast as  
> IDE.
>
> Megaread times for TC^3 were ~11-12 seconds and 19-20seconds for IDE.
>
> Mark
> Cloud-9
>
>
> ----- Original Message -----
> From: "John W. Linville" <linville at tuxdriver.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Thursday, April 2, 2009 8:21:26 PM GMT -06:00 US/Canada Central
> Subject: Re: [Coco] CoCo Video Player Project
>
> Any idea of the bandwidth available from SuperIDE or the TC^3?
>
> As for the video data, ffmpeg can bust videos into individual bitmap
> files like this:
>
>    ffmpeg -i foo.avi -r 30 foo-%03d.bmp
>
> Then it would be straight-forward to convert the .bmp files into a raw
> stream of coco video data.  This data could then be laid-out to a
> sequence of tracks on the disk.  On playback, the sectors could be
> read sequentially and simply blasted to the video buffer, with some
> timing control to sequence the frames.    Audio data could be mixed-in
> as well if there is enough badnwidth...?
>
> It seems simple enough...the bounding factors would be the disk
> bandwidth (frame rate) and the size of the disk (length of video).
>
> Hmmm...anyone wanna drive this?  I have enough stuff going-on...but,
> maybe I can help?
>
> John
>
> On Thu, Apr 02, 2009 at 08:05:17PM -0500, Sean wrote:
>> Here's the links to the 'video' playing.  Technically it was just a
>> pure ML program:
>>
>> http://www.flickr.com/photos/91071283@N00/3381641924/in/set-72157615746538685/
>>
>> And this one is just a still of the setup.
>> http://www.flickr.com/photos/91071283@N00/3380799975/in/set-72157615746538685/
>>
>>
>>
>> On Thu, Apr 2, 2009 at 6:23 PM, Allen Huffman <ALSPLACE at pobox.com>  
>> wrote:
>>> Here's an idea I'd like to bounce off of everyone.
>>>
>>> A few years ago, right when the Glenside IDE interface came out,  
>>> there was a
>>> guy who was using it to write a video player -- I cannot remember  
>>> who it
>>> was, for the life of me! Does anyone know what I am talking about?  
>>> I think
>>> he had made something that just blasted sectors from the hard  
>>> drive and spit
>>> them out to the screen, and had digitized some stuff as a demo.
>>>
>>> How much work would it be to do something like that, perhaps  
>>> playing video
>>> off of the SuperIDE Compact Flash card? It could be bare-metal  
>>> assembly code
>>> -- but would need to be able to play files of whatever kind we  
>>> convert to (a
>>> series of uncompressed frames, since storage space on the card is  
>>> not really
>>> an issue).  A bonus for doing sound.
>>>
>>> Something like this would be a heck of a demo (if somewhat  
>>> unpractical).
>>>
>>> After seeing the link to the Timex Sinclair 1000 (that Sean sent  
>>> from the
>>> Midwest Gaming Expo), I figure if that machine can do "video", we  
>>> can do
>>> much more on the CoCo!
>>>
>>>               -- Allen
>>>
>>>
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> http://five.pairlist.net/mailman/listinfo/coco
>>>
>>
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>>
>
> -- 
> John W. Linville        Someday the world will need a hero, and you
> linville at tuxdriver.com            might be all we have.  Be ready.
>
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