Hi,
we're trying to get an rme9652 soundcard to work using the ALSA oss emulation layer
and we're stuck at a strange place. Any help is appreciated. In particular: Can anyone
confirm that the oss emulation works with the rme? (If not: How hard would it be to
reengineer our software to use ALSA directly?)
Our software is a mixer we developed inhouse. We've installed ALSA ver 0.5.12a. Other
soundcards (Soundblaster live and viaxxx) work perfectly using oss-free drivers. aplay
using the rme works too. play using the rme doesn't work ("sox: Invalid audio buffer
size 0") and in our application, the first write() to /dev/dsp returns with an
"Invalid Argument". This is our code (reduced to the minimum nessesary):
_myDevice = open("/dev/dsp", O_WRONLY, 0);
if (_myDevice == -1) {
cerr << "failed." << endl;
perror("/dev/dsp");
}
cerr << "done." << endl;
short myShortData[BLOCKSIZE];
memset (myShortData, 0, BLOCKSIZE*2);
int myRetVal = ::write (_myDevice, myShortData, sizeof (myShortData));
if (myRetVal == -1) {
perror (("/dev/dsp");
}
open() works, write() doesn't. We can set the sample size (via ioctl()) without
problems, but setting the number of channels again returns with "Invalid Argument"...
This is what lsmod tells us:
snd-pcm-oss 18368 0
snd-pcm-plugin 14224 0 [snd-pcm-oss]
snd-mixer-oss 4896 0 [snd-pcm-oss]
mixer 17792 0 [snd-mixer-oss]
snd-mixer 27680 0 [mixer]
snd-card-rme9652 1472 0
snd-rme9652 12112 0 [snd-card-rme9652]
snd-pcm 31968 0 [snd-pcm-oss snd-pcm-plugin snd-rme9652]
snd-timer 9616 0 [snd-pcm]
snd-rme9652_mem 1472 2 [snd-rme9652]
snd 33600 1 [snd-pcm-oss snd-pcm-plugin snd-mixer-oss mixer
snd-mixer snd-card-rme9652 snd-rme9652 snd-pcm snd-timer]
NVdriver 818016 14 (autoclean)
Again, we're grateful for any help.
Thanks in advance,
Uli
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