[Media_api] PortMidi reports success on init but ALSA ouputs errormessage

[Sebastien Frippiat]

Roger Dannenberg wrote:

>Sebastien,
>
>	Cpr is right -- it should not be an error to initialize PortMidi
>even if there are no devices available. But did you get the console error
>message after initialization or when you try to open a device? You may be
>right that there's a problem.
>	I'm definitely behind on putting out a new release with some mostly
>minor fixes, but on the other hand, a lot of people seem to be using
>PortMidi without complaints, so low activity levels is seen as a virtue. I
>certainly want to track down and fix bugs as they are discovered, so let me
>know.
>
>	-Roger
>
>
>
>
>  
>
Hi.

Thanks for your quick answers. At least, now, I know for sure that there 
is support for the PortMidi library :-)

I understand your answer and I realize now that I should have tested 
further my program. About your question, the error message come when I'm 
initialize : I call Pm_Initialize() and Alsa directly ouput its message. 
I checked and Pm_CountDevices() returns 0 as it should. Great.

Now, another problem. If I initialize PortMidi when I have no MIDI 
device, I get the Alsa message and I can bear with it. Another problem 
arises when I call Pm_Terminate (as I should because it IS initialized) 
: Alsa complains again and EXIT my program. Here is the output I have :

- ALSA lib seq_hw.c:446:(snd_seq_hw_open) open /dev/snd/seq failed: No 
such file or directory
This one come from the initialization.
- AlterMidiIO::MidiIO::initialize() - No MIDI device has been found
This is a message I output just before calling Pm_Terminate.
- Salto_DBG: seq.c:1014: snd_seq_close: Assertion `seq' failed.
Again a message from Alsa ("Salto_DBG" is the name of my executable
- Aborted
Again from Alsa.

It is obviously not a clean way of exiting my program as I cannot 
prevent it and none of my destructors are called.

I tried with a simple program which only does the following : 
Pm_Initialize(), Pm_CountDevices() and Pm_Terminate() if no device has 
been found. The problem arises. So I'm sure the problem doesn't come 
from my program.

By the way, I compile by adding the -lportmidi -lporttime -lasound flags 
(I am obliged to add -lasound to avoid unresolved externals).

Thanks for your help.
Sebastien