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  • only in /netgear-R7000-V1.0.7.12_1.2.5/components/opensource/linux/linux-2.6.36/Documentation/sound/alsa/
1This document describes standard names of mixer controls.
2
3Syntax: SOURCE [DIRECTION] FUNCTION
4
5DIRECTION:
6  <nothing>	(both directions)
7  Playback
8  Capture
9  Bypass Playback
10  Bypass Capture
11
12FUNCTION:
13  Switch	(on/off switch)
14  Volume
15  Route		(route control, hardware specific)
16
17SOURCE:
18  Master
19  Master Mono
20  Hardware Master
21  Speaker	(internal speaker)
22  Headphone
23  Beep		(beep generator)
24  Phone
25  Phone Input
26  Phone Output
27  Synth
28  FM
29  Mic
30  Line
31  CD
32  Video
33  Zoom Video
34  Aux
35  PCM
36  PCM Front
37  PCM Rear
38  PCM Pan
39  Loopback
40  Analog Loopback	(D/A -> A/D loopback)
41  Digital Loopback	(playback -> capture loopback - without analog path)
42  Mono
43  Mono Output
44  Multi
45  ADC
46  Wave
47  Music
48  I2S
49  IEC958
50
51Exceptions:
52  [Digital] Capture Source
53  [Digital] Capture Switch	(aka input gain switch)
54  [Digital] Capture Volume	(aka input gain volume)
55  [Digital] Playback Switch	(aka output gain switch)
56  [Digital] Playback Volume	(aka output gain volume)
57  Tone Control - Switch
58  Tone Control - Bass
59  Tone Control - Treble
60  3D Control - Switch
61  3D Control - Center
62  3D Control - Depth
63  3D Control - Wide
64  3D Control - Space
65  3D Control - Level
66  Mic Boost [(?dB)]
67
68PCM interface:
69
70  Sample Clock Source	{ "Word", "Internal", "AutoSync" }
71  Clock Sync Status	{ "Lock", "Sync", "No Lock" }
72  External Rate		/* external capture rate */
73  Capture Rate		/* capture rate taken from external source */
74
75IEC958 (S/PDIF) interface:
76
77  IEC958 [...] [Playback|Capture] Switch	/* turn on/off the IEC958 interface */
78  IEC958 [...] [Playback|Capture] Volume	/* digital volume control */
79  IEC958 [...] [Playback|Capture] Default	/* default or global value - read/write */
80  IEC958 [...] [Playback|Capture] Mask		/* consumer and professional mask */
81  IEC958 [...] [Playback|Capture] Con Mask	/* consumer mask */
82  IEC958 [...] [Playback|Capture] Pro Mask	/* professional mask */
83  IEC958 [...] [Playback|Capture] PCM Stream	/* the settings assigned to a PCM stream */
84  IEC958 Q-subcode [Playback|Capture] Default	/* Q-subcode bits */
85  IEC958 Preamble [Playback|Capture] Default	/* burst preamble words (4*16bits) */
86