Nice, now I have it up and running with my preferred SR of 48Khz, and it seems to be stable. I figured out the git stuff since the last email I sent. I didn't know how to browse and switch to various branches, so I kept getting the wrong files in sound/firewire.
Thanks for the help, Doug
On 06/21/2011 07:38 AM, Clemens Ladisch wrote:
Doug McLain wrote:
It looks like 44.1Khz is the default setting the AF12 powers up at, and the alsa driver doesn't know how to change SR yet, is this the case?
Actually, the driver knows quite well how to change SR, and does this to initialize the device to 44.1 kHz. However, this driver was intended as a prototype, so I didn't bother to implement making the other SRs available to ALSA applications.
FYI I tried #define FIXED_RATE 48000 just to see if I could use the driver at 48K for soem recording sessions today.
This should work if you also change FIXED_RATE_SFC (0...6 = 32/44.1/48/ 88.2/96/176.4/192 kHz).
Aplay plays wav files using plughw, but not hw.
This is to be expected if your .wav doesn't have twelve channels of 32-bit samples.
I also wonder if you can explain to me how to clone just that driver so I can keep up with it correctly using git pull. I'm a little weak on git. I just grabbed the .c and .h files manually and made my own Makefile for standalone module building.
The driver is in a kernel repository because it is part of the kernel; using it with other kernel versions would require back-porting any changes in the kernel API (as you did this with the CSR_ symbols).
Current development is in the firewire-kernel-streaming branch, where the drivers are composed of more files and depend on some changes in the core kernel. There is no easy way of using these with another kernel.
Regards, Clemens