Re: [cc65] tgi and joystick experiment

On Monday 25 October 2004 15:11, Karri Kaksonen wrote:
> I got some mail about a tsi-sound library also (Tiny Sound Interface).
> 
> Personally I would like to have a multilevel sound interface API where the
> lowest level driver could answer to TSI-requests like:
> 
> ; for digitized sound
> tsi_sample(sample)

i would make samples a seperate and independent driver. then samples might
have simelar functions as the regular music driver, except the "instrument"
call which then would set the actual sample.

> ; for synthesized sound
> tsi_note_on(channel, note)
> tsi_note_off(channel)
> tsi_volume(channel, volume)
> tsi_waveform(channel, waveform) ; Choose waveform from pre-defined
> settings
> 
> ; for hardware understanding envelopes (attack, fade)
> tsi_envelope(channel, attack, hold, fade)

i dont think setting envelope and waveform makes sence in such an api...i
would suggest using predefined instruments. the different machines are
way to different to make anything else imho.
 
> The top level midi or abc-notation interface could then use the lower
> level tsi-library functions.
> 
> abc_play_tune(channel, tune)
> midi_play_tune(tune)

mind you, all that must handle the maximum available channels, and possibly
other things....and a midi player is probably totally out of the question :=P
 
> The sprite-api if hopefully compatible with the way the Lynx handles
> sprites. I already used the CONTROL entry in the tgi-driver for the low
> level sprite drawing like:
> 
> #define tgi_sprite(sprite) tgi_ioctl(0, sprite)
> 
> The "sprite" is a structure containing things like the position on screen.

sprites might be kinda tricky....since it various a LOT how they
work on different platforms....mmmmh.... maybe we should start
collecting the capabilities of the various platforms before we
even think about this one...

gpz

----------------------------------------------------------------------
To unsubscribe from the list send mail to majordomo@musoftware.de with
the string "unsubscribe cc65" in the body(!) of the mail.