On Fri, Jul 11, 2003 at 03:05:28AM +0300, Kai Vehmanen wrote: > One thing to try is the alsa-oss package. This is an alternative > (user-space) implementation of the OSS emulation layer. It relies on the > LD_PRELOAD mechanism. You can test it with: > > LD_PRELOAD=/path/to/libaoss.so.0.0.0 ./a.out > > ... where "a.out" is your test program. You should be able to run ViaVoice > also this way. You can get the alsa-oss package from ALSA CVS or from: > LD_PRELOAD=~/src/alsa-cvs/alsa-oss/.libs/libaoss.so.0.0.0 ./a.out
Thanks, this is very useful. I downloaded the source of ALSA from CVS. It turns out that I cannot compile it: I have kernel 2.5.74 and the alsa source (alsa-drivers and alsa-kernel) is full of 'spin_lock_*' function calls that do not exist in kernel 2.5. Nevertheless, I could compile the alsa-oss library. This turns out not to be blocking anymore - but, the result of a SNDCTL_DSP_GETISPACE is unfortunately nonsense :( I now get: ~>LD_PRELOAD=/usr/src/alsa/alsa-oss/.libs/libaoss.so.0.0.0 a.out Fragment size: 1024 Number of fragments: 32767 Number of channels: 1 Sample rate: 22050 Number of full fragments that can be read or written without blocking: 0 Total number of fragments allocated for buffering: 2 Size of a fragment in bytes: 2048 Number of bytes that can be read or written immediately without blocking: 1024 Number of full fragments that can be read or written without blocking: 0 Total number of fragments allocated for buffering: 2 Size of a fragment in bytes: 2048 Number of bytes that can be read or written immediately without blocking: 1024 Number of full fragments that can be read or written without blocking: 0 Total number of fragments allocated for buffering: 2 Size of a fragment in bytes: 2048 Number of bytes that can be read or written immediately without blocking: 1024 Number of full fragments that can be read or written without blocking: 0 Total number of fragments allocated for buffering: 2 Size of a fragment in bytes: 2048 Number of bytes that can be read or written immediately without blocking: 1024 Number of full fragments that can be read or written without blocking: 1 Total number of fragments allocated for buffering: 2 Size of a fragment in bytes: 2048 Number of bytes that can be read or written immediately without blocking: 3072 Read 1024 bytes. etc The size of a fragment is NOT 2048... it is 1024. It also reports 3072 bytes available, which is more than the total size of the buffer! I am not sure what the application will do with mis-information like this. -- Carlo Wood <[EMAIL PROTECTED]> ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps1 _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
