Minivosc - Revision history

Sdaau: added link to paper; note about pulseaudio; fixed some pre tag formatting

2012-04-24T09:11:15Z

added link to paper; note about pulseaudio; fixed some pre tag formatting

2010-11-04T23:24:14Z

‎Introduction: - edited link

2010-11-01T21:28:29Z

moved last added links up

2010-11-01T21:26:23Z

‎More on memory (buffer) management: - added some links

2010-08-10T12:39:35Z

removed note for bad thumbnail images (as they seem to be fixed now)

2010-08-10T10:35:06Z

added link to mailing list thread (gmane)

2010-08-10T10:26:38Z

Initial paste of Minivosc page

@@ Line 17: / Line 17: @@
 <i><font color="gray">Edit: see also following links:
-* [https://bugtrack.alsa-project.org/wiki/wikka.php?wakka=FramesPeriods Official Alsa Wiki for Developers: FramesPeriods]
+* [http://www.alsa-project.org/main/index.php/FramesPeriods FramesPeriods - AlsaProject] (old version: [https://bugtrack.alsa-project.org/wiki/wikka.php?wakka=FramesPeriods Official Alsa Wiki for Developers: FramesPeriods])
 * [http://mailman.alsa-project.org/pipermail/alsa-devel/2007-April/000474.html (alsa-devel) Questions about writing a new ALSA driver for a very limitted device]
 * [http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html ALSA project - the C library reference: PCM (digital audio) interface]
@@ Line 74: / Line 74: @@
 &nbsp;
 === Starting points ===

@@ Line 16: / Line 16: @@
 * Stéphan K.'s [http://alsa.opensrc.org/index.php/HowTo_Asynchronous_Playback HowTo Asynchronous Playback - ALSA wiki]
 While all these documents certainly provide valuable introductory points, they aren't excesivelly verbose about basic problems inherent in programming soundcard drivers; and they do not provide a full working code example of a driver. Iwai's document discusses an example of a hypothetical PCI device, whereas Collins' tutorial works with a real, though undisclosed device.
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 &nbsp;
 ==== More on memory (buffer) management ====

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 ==== More on memory (buffer) management ====
 At this point, let us recall that <code>minivosc</code> simply repeats a short waveform, in order to generate a continuous tone. This waveform is specified as the array <code>wvfdat</code> within the driver code. Additionally, at each repetition, the waveform can be 'lifted' - that is, a constant value can be added to it - which is controlled by the <code>minivosc_device->wvf_lift</code> variable.
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 &nbsp;
 === dummy.c revisited ===

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 __FORCETOC__
 == minivosc ALSA driver ==
 ''For comments and discussion, see: [http://thread.gmane.org/gmane.linux.alsa.devel/75709/ Minivosc entry on Wiki - discuss])

← Older revision		Revision as of 10:35, 10 August 2010
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	<small>''Note'': The thumbnail images shown on this page have some colors displayed wrong - please look at their source Wiki entries until the problem gets fixed</small>		<small>''Note'': The thumbnail images shown on this page have some colors displayed wrong - please look at their source Wiki entries until the problem gets fixed</small>
		+
		+	''For comments and discussion, see: [http://thread.gmane.org/gmane.linux.alsa.devel/75709/ Minivosc entry on Wiki - discuss])