[Coco] CoCo SDC Media Player development

[Richard E. Crislip]

On Mon, 19 Jun 2017 22:33:42 -0500
Zippster <zippster278 at gmail.com> wrote:

> Just added an RG6 (PMODE4) video format to the Media Player system.
> Double-buffered now to get rid of tearing, which was an issue with an
> earlier single buffer version of the code.  More formats to come.  :)
> 
> <https://drive.google.com/open?id=0B1sgl615FlGnS2tGTGVHUFNaVVU>
> 
> - Ed
> 
> 
> > On Jun 17, 2017, at 9:54 PM, Zippster <zippster278 at gmail.com> wrote:
> > 
> > Hello everyone,
> > 
> > Over the last few days I’ve been writing a little assembly, working
> > to tie together the various player routines I’ve developed for
> > playing streaming media from the CoCo SDC.
> > 
> > I’ve come up with a system that should allow for easy use and quite
> > a bit of flexibility in the formats used.  The media player system
> > (aside from the media data itself) consists of two major parts.
> > The first part is a file browser app that allows selection of media
> > files from the SD card as well as provides the basic framework
> > needed (buffers, common routines, etc.).
> > 
> > The second part is the player routine specific to the media type
> > being played back, which is embedded in the media file itself.
> > This will allow for the flexibility needed to support many
> > different formats, which all have their own specific needs when
> > playing back the data.
> > 
> > It requires a 64K machine, lower 32K is where the file browser and
> > all the needed buffers, common routines and other framework is
> > located.  On selecting a media file, the first 32K is loaded into
> > high RAM, and execution is passed to the specialized routine there,
> > which takes over for the playback, and display of any other data,
> > background pics, vu meters, etc.  Whatever is desired for
> > presenting the particular media; video, audio, chip tunes, slide
> > shows, whatever.  This allows for large specialized routines for
> > handling a file type as needed and gives a lot of flexibility.
> > 
> > Anyway, it’s coming along quite well.  So far I’ve adapted one
> > player routine to the new system, which is specialized for playback
> > of 33.4KHz, 8-bit stereo audio on .89MHz systems (using Orch90
> > compatible DACs).
> > 
> > Here are a couple of videos I posted about it on Facebook recently
> > to give you an idea…
> > 
> > <https://drive.google.com/open?id=0B1sgl615FlGnYnRHb29MbjA0V1k>
> > <https://drive.google.com/open?id=0B1sgl615FlGnY2ZoMHlheU13bVk>
> > 
> > Yes, I’m having fun.  :)
> > 
> > - Ed
> >   
> 
> 

Damn... did you make that video? That was outstanding! Not to mention
that it is being done on a CoCo.