Re: [pygame] pygame.midi using portmidi?

On Mon, Apr 27, 2009 at 10:58 AM, René Dudfield <renesd@xxxxxxxxx> wrote:

hi,

the Channel stuff isn't wrapped yet in midi.py... See pypm.pyx Channel to see how Channels work. The portmidi.h file also has some good docs to see how it works at the C level. However that's just used for input.

I think you can change the channel like this:

channel = 1
note = 65
velocity = 100
output.write_short(0x90+channel, note, velocity)

... I think... will need to check the exact codes.

So, yeah I agree... we should have a channel default with the note_on/note_off methods.

cu,

On Mon, Apr 27, 2009 at 7:03 AM, Nirav Patel <olpc@xxxxxxxxxxxxxx> wrote:

The --list option goes to print_device_info(), which seems to be
missing the initialization stuff:
pygame.init()
pygame.midi.init()

I'm new to MIDI in general, but I am planning on using this in a
project I'm working on. Is there a reason we are using channel 1 on
MIDI Writes rather than having the channel be an argument of the
function with a default of 1?

Nirav

On Tue, Jan 13, 2009 at 2:59 PM, Lenard Lindstrom <len-l@xxxxxxxxx> wrote:
> Hi René,
>
> Good stuff. I added a main() function to midi.py, for consistency, as well
> as a --list option. As for porttime it is no big problem to repair the
> Windows build. Just curious though, why did add a new PORTTIME macro to
> Setup.in instead of:
>
> PORTMIDI = -lportmidi -lporttime
>
>
> Lenard
>
> P.S. Brian, just add the line
>
> PORTTIME =
>
> to prebuilt\Setup_Win.in and the automated Windows builds will continue to
> work.
>
>
> René Dudfield wrote:
>>
>> Hi,
>>
>> I added a get_device_info(device_id) function... to allow seeing which
>> devices are available. The midi.py example prints out the available
>> devices.
>>
>> it is also compiling on ubuntu... (ya! I finally got my ubuntu
>> partition working again).
>>
>> Had to link in libporttime... and therefore add it as a dependency,
>> which may have broken msys build.
>>
>> Added allowing to specify an optional device_id on the cmd line eg,
>> --input 3
>>
>>
>> cu,
>>
>>
>>
>> On Wed, Dec 24, 2008 at 6:10 PM, René Dudfield <renesd@xxxxxxxxx> wrote:
>>
>>>
>>> Hi,
>>>
>>> yes, something like that would be good. There could be a separate
>>> function running in a background thread to handle all of the input
>>> midi. Which I think would just run code similar to what is in the
>>> example. Probably something very useful to add.
>>>
>>> A piano keyboard example would be a very nice one I think :)
>>>
>>> cu,
>>>
>>>
>>>
>>> On Wed, Dec 24, 2008 at 5:19 PM, Lenard Lindstrom <len-l@xxxxxxxxx>
>>> wrote:
>>>
>>>>
>>>> Hi René,
>>>>
>>>> I will look at the new midi.py and flesh out the keyboard example: port
>>>> selection, a piano keyboard in the window, more notes, etc. It's good
>>>> news
>>>> about the pypm wrapper. One thing I was wondering, is it possible to
>>>> hide
>>>> the portmidi event to Pygame event translation, so only Pygame events
>>>> are
>>>> visible in the main loop?
>>>>
>>>> Lenard
>>>>
>>>> René Dudfield wrote:
>>>>
>>>>>
>>>>> hey,
>>>>>
>>>>> that's cool. I checked in a new pygame.midi which uses a modified
>>>>> version of your output class.
>>>>>
>>>>> I also put an examples/midi.py in there. It contains an input
>>>>> example, and your output example converted to use the pygame.midi
>>>>> module.
>>>>>
>>>>> python midi.py --output
>>>>> python midi.py --input
>>>>>
>>>>>
>>>>> Also John Harrison said we could use his pyrex pypm portmidi wrapper
>>>>> in pygame :)
>>>>>
>>>>> cu,
>>>>>
>>>>> On Wed, Dec 24, 2008 at 6:57 AM, Lenard Lindstrom <len-l@xxxxxxxxx>
>>>>> wrote:
>>>>>
>>>>>
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I'm reposting my keyboard pyportmidi example. It has been changed to
>>>>>> use
>>>>>> pygame.pypm. The midiport module may be of interest as it contains an
>>>>>> output
>>>>>> class. The keyboard program could go into the examples, with some
>>>>>> improvements. Once midi has been fixed if you want to add keyboard.py
>>>>>> to
>>>>>> the
>>>>>> examples, with the needed changes for pygame.midi, I can spruce it up
>>>>>> to
>>>>>> make it more intuitive.
>>>>>>
>>>>>> Usage: The q,w,e and r keys play four notes on the Church Organ
>>>>>> instrument.
>>>>>> Also the four notes can be played by clicking horizontally across the
>>>>>> blue
>>>>>> window. It is very simple for now but could be developed into a proper
>>>>>> keyboard.
>>>>>>
>>>>>> Lenard
>>>>>>
>>>>>> René Dudfield wrote:
>>>>>>
>>>>>>
>>>>>>>
>>>>>>> hi again,
>>>>>>>
>>>>>>> Another note:
>>>>>>>
>>>>>>> Tim Thompson said we could include his patches to pyportmidi, and
>>>>>>> also
>>>>>>> include some of his other midi code...
>>>>>>>
>>>>>>> """You'll also find there a python module (nosuch.midiutil) that
>>>>>>> contains higher-level routines for MIDI things, including a MIDI file
>>>>>>> reader, simple scheduler, etc."""
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> Lenard Lindstrom
>>>>>> <len-l@xxxxxxxxx>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>> --
>>>> Lenard Lindstrom
>>>> <len-l@xxxxxxxxx>
>>>>
>>>>
>>>>
>
>
> --
> Lenard Lindstrom
> <len-l@xxxxxxxxx>
>
>