1What:		/config/usb-gadget/gadget/functions/uvc.name
2Date:		Dec 2014
3KernelVersion:	3.20
4Description:	UVC function directory
5
6		streaming_maxburst	- 0..15 (ss only)
7		streaming_maxpacket	- 1..1023 (fs), 1..3072 (hs/ss)
8		streaming_interval	- 1..16
9
10What:		/config/usb-gadget/gadget/functions/uvc.name/control
11Date:		Dec 2014
12KernelVersion:	3.20
13Description:	Control descriptors
14
15What:		/config/usb-gadget/gadget/functions/uvc.name/control/class
16Date:		Dec 2014
17KernelVersion:	3.20
18Description:	Class descriptors
19
20What:		/config/usb-gadget/gadget/functions/uvc.name/control/class/ss
21Date:		Dec 2014
22KernelVersion:	3.20
23Description:	Super speed control class descriptors
24
25What:		/config/usb-gadget/gadget/functions/uvc.name/control/class/fs
26Date:		Dec 2014
27KernelVersion:	3.20
28Description:	Full speed control class descriptors
29
30What:		/config/usb-gadget/gadget/functions/uvc.name/control/terminal
31Date:		Dec 2014
32KernelVersion:	3.20
33Description:	Terminal descriptors
34
35What:		/config/usb-gadget/gadget/functions/uvc.name/control/terminal/output
36Date:		Dec 2014
37KernelVersion:	3.20
38Description:	Output terminal descriptors
39
40What:		/config/usb-gadget/gadget/functions/uvc.name/control/terminal/output/default
41Date:		Dec 2014
42KernelVersion:	3.20
43Description:	Default output terminal descriptors
44
45		All attributes read only:
46		iTerminal	- index of string descriptor
47		bSourceID 	- id of the terminal to which this terminal
48				is connected
49		bAssocTerminal	- id of the input terminal to which this output
50				terminal is associated
51		wTerminalType	- terminal type
52		bTerminalID	- a non-zero id of this terminal
53
54What:		/config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera
55Date:		Dec 2014
56KernelVersion:	3.20
57Description:	Camera terminal descriptors
58
59What:		/config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera/default
60Date:		Dec 2014
61KernelVersion:	3.20
62Description:	Default camera terminal descriptors
63
64		All attributes read only:
65		bmControls		- bitmap specifying which controls are
66					supported for the video stream
67		wOcularFocalLength	- the value of Locular
68		wObjectiveFocalLengthMax- the value of Lmin
69		wObjectiveFocalLengthMin- the value of Lmax
70		iTerminal		- index of string descriptor
71		bAssocTerminal		- id of the output terminal to which
72					this terminal is connected
73		wTerminalType		- terminal type
74		bTerminalID		- a non-zero id of this terminal
75
76What:		/config/usb-gadget/gadget/functions/uvc.name/control/processing
77Date:		Dec 2014
78KernelVersion:	3.20
79Description:	Processing unit descriptors
80
81What:		/config/usb-gadget/gadget/functions/uvc.name/control/processing/default
82Date:		Dec 2014
83KernelVersion:	3.20
84Description:	Default processing unit descriptors
85
86		All attributes read only:
87		iProcessing	- index of string descriptor
88		bmControls	- bitmap specifying which controls are
89				supported for the video stream
90		wMaxMultiplier	- maximum digital magnification x100
91		bSourceID	- id of the terminal to which this unit is
92				connected
93		bUnitID		- a non-zero id of this unit
94
95What:		/config/usb-gadget/gadget/functions/uvc.name/control/header
96Date:		Dec 2014
97KernelVersion:	3.20
98Description:	Control header descriptors
99
100What:		/config/usb-gadget/gadget/functions/uvc.name/control/header/name
101Date:		Dec 2014
102KernelVersion:	3.20
103Description:	Specific control header descriptors
104
105dwClockFrequency
106bcdUVC
107What:		/config/usb-gadget/gadget/functions/uvc.name/streaming
108Date:		Dec 2014
109KernelVersion:	3.20
110Description:	Streaming descriptors
111
112What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/class
113Date:		Dec 2014
114KernelVersion:	3.20
115Description:	Streaming class descriptors
116
117What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/class/ss
118Date:		Dec 2014
119KernelVersion:	3.20
120Description:	Super speed streaming class descriptors
121
122What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/class/hs
123Date:		Dec 2014
124KernelVersion:	3.20
125Description:	High speed streaming class descriptors
126
127What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/class/fs
128Date:		Dec 2014
129KernelVersion:	3.20
130Description:	Full speed streaming class descriptors
131
132What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching
133Date:		Dec 2014
134KernelVersion:	3.20
135Description:	Color matching descriptors
136
137What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/default
138Date:		Dec 2014
139KernelVersion:	3.20
140Description:	Default color matching descriptors
141
142		All attributes read only:
143		bMatrixCoefficients	- matrix used to compute luma and
144					chroma values from the color primaries
145		bTransferCharacteristics- optoelectronic transfer
146					characteristic of the source picutre,
147					also called the gamma function
148		bColorPrimaries		- color primaries and the reference
149					white
150
151What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg
152Date:		Dec 2014
153KernelVersion:	3.20
154Description:	MJPEG format descriptors
155
156What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name
157Date:		Dec 2014
158KernelVersion:	3.20
159Description:	Specific MJPEG format descriptors
160
161		All attributes read only,
162		except bmaControls and bDefaultFrameIndex:
163		bmaControls		- this format's data for bmaControls in
164					the streaming header
165		bmInterfaceFlags	- specifies interlace information,
166					read-only
167		bAspectRatioY		- the X dimension of the picture aspect
168					ratio, read-only
169		bAspectRatioX		- the Y dimension of the picture aspect
170					ratio, read-only
171		bmFlags			- characteristics of this format,
172					read-only
173		bDefaultFrameIndex	- optimum frame index for this stream
174
175What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name
176Date:		Dec 2014
177KernelVersion:	3.20
178Description:	Specific MJPEG frame descriptors
179
180		dwFrameInterval		- indicates how frame interval can be
181					programmed; a number of values
182					separated by newline can be specified
183		dwDefaultFrameInterval	- the frame interval the device would
184					like to use as default
185		dwMaxVideoFrameBufferSize- the maximum number of bytes the
186					compressor will produce for a video
187					frame or still image
188		dwMaxBitRate		- the maximum bit rate at the shortest
189					frame interval in bps
190		dwMinBitRate		- the minimum bit rate at the longest
191					frame interval in bps
192		wHeight			- height of decoded bitmap frame in px
193		wWidth			- width of decoded bitmam frame in px
194		bmCapabilities		- still image support, fixed frame-rate
195					support
196
197What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed
198Date:		Dec 2014
199KernelVersion:	3.20
200Description:	Uncompressed format descriptors
201
202What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name
203Date:		Dec 2014
204KernelVersion:	3.20
205Description:	Specific uncompressed format descriptors
206
207		bmaControls		- this format's data for bmaControls in
208					the streaming header
209		bmInterfaceFlags	- specifies interlace information,
210					read-only
211		bAspectRatioY		- the X dimension of the picture aspect
212					ratio, read-only
213		bAspectRatioX		- the Y dimension of the picture aspect
214					ratio, read-only
215		bDefaultFrameIndex	- optimum frame index for this stream
216		bBitsPerPixel		- number of bits per pixel used to
217					specify color in the decoded video
218					frame
219		guidFormat		- globally unique id used to identify
220					stream-encoding format
221
222What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name
223Date:		Dec 2014
224KernelVersion:	3.20
225Description:	Specific uncompressed frame descriptors
226
227		dwFrameInterval		- indicates how frame interval can be
228					programmed; a number of values
229					separated by newline can be specified
230		dwDefaultFrameInterval	- the frame interval the device would
231					like to use as default
232		dwMaxVideoFrameBufferSize- the maximum number of bytes the
233					compressor will produce for a video
234					frame or still image
235		dwMaxBitRate		- the maximum bit rate at the shortest
236					frame interval in bps
237		dwMinBitRate		- the minimum bit rate at the longest
238					frame interval in bps
239		wHeight			- height of decoded bitmap frame in px
240		wWidth			- width of decoded bitmam frame in px
241		bmCapabilities		- still image support, fixed frame-rate
242					support
243
244What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/header
245Date:		Dec 2014
246KernelVersion:	3.20
247Description:	Streaming header descriptors
248
249What:		/config/usb-gadget/gadget/functions/uvc.name/streaming/header/name
250Date:		Dec 2014
251KernelVersion:	3.20
252Description:	Specific streaming header descriptors
253
254		All attributes read only:
255		bTriggerUsage		- how the host software will respond to
256					a hardware trigger interrupt event
257		bTriggerSupport		- flag specifying if hardware
258					triggering is supported
259		bStillCaptureMethod	- method of still image caputre
260					supported
261		bTerminalLink		- id of the output terminal to which
262					the video endpoint of this interface
263					is connected
264		bmInfo			- capabilities of this video streaming
265					interface
266