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- Lines: 49
Mon Aug 23 11:15:27 1999
- Orig file:
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.14/linux/Documentation/sound/solo1 linux/Documentation/sound/solo1
@@ -0,0 +1,48 @@
+ALaw/uLaw sample formats
+This driver does not support the ALaw/uLaw sample formats.
+ALaw is the default mode when opening a sound device
+using OSS/Free. The reason for the lack of support is
+that the hardware does not support these formats, and adding
+conversion routines to the kernel would lead to very ugly
+code in the presence of the mmap interface to the driver.
+And since xquake uses mmap, mmap is considered important :-)
+and no sane application uses ALaw/uLaw these days anyway.
+In short, playing a Sun .au file as follows:
+cat my_file.au > /dev/dsp
+does not work. Instead, you may use the play script from
+Chris Bagwell's sox-12.14 package (or later, available from the URL
+below) to play many different audio file formats.
+The script automatically determines the audio format
+and does do audio conversions if necessary.
+Blocking vs. nonblocking IO
+Unlike OSS/Free this driver honours the O_NONBLOCK file flag
+not only during open, but also during read and write.
+This is an effort to make the sound driver interface more
+regular. Timidity has problems with this; a patch
+is available from http://www.ife.ee.ethz.ch/~sailer/linux/pciaudio.html.
+(Timidity patched will also run on OSS/Free).
+The driver supports a simple MIDI UART interface, with
+no ioctl's supported.
+The card has an OPL compatible FM synthesizer.
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