sound/designs/oss-emulation.rst

2 Notes on Kernel OSS-Emulation
11 ALSA provides a powerful OSS emulation on the kernel.
12 The OSS emulation for PCM, mixer and sequencer devices is implemented
14 When you need to access the OSS PCM, mixer or sequencer devices, the
22 Only necessary step for auto-loading of OSS modules is to define the
32 The currently available OSS configuration is shown in
34 /dev/sndstat, which is available on the commercial OSS driver.
38 after the corresponding OSS-emulation module is loaded.  Don't worry
45 ALSA supports the following OSS device files:
66 /dev/midi1.  They are NOT for OSS but for tclmidi, which is
69 Unlike the real OSS, ALSA cannot use the device files more than the
122 As default, ALSA emulates the OSS PCM with so-called plugin layer,
186 As default, ALSA behaves as original OSS drivers, i.e. does not block
191 for OSS devices, define like the following:
225 OSS mixer is relatively complicated.  ALSA builds up a mixer element
231 OSS is changed, all the volume and switch controls above are adjusted
234 As default, ALSA uses the following control for OSS volumes:
237 OSS volume		ALSA control		Index
281 where the first column is the OSS volume element, the second column
284 corresponding OSS control is not available.
311 capture, the OSS API provides no way to set the format, sample rate or
336 on OSS.