aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/usb/gadget/f_uvc.h
diff options
context:
space:
mode:
authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2010-05-02 14:57:41 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-20 16:21:41 -0400
commitcdda479f15cd13fa50a913ca85129c0437cc7b91 (patch)
tree5189c428d5f23f738dbf3e8e555c6f48da540b3a /drivers/usb/gadget/f_uvc.h
parent910f8d0cede74beff1eee93cf9cf2a28d7600e66 (diff)
USB gadget: video class function driver
This USB video class function driver implements a video capture device from the host's point of view. It creates a V4L2 output device on the gadget's side to transfer data from a userspace application over USB. The UVC-specific descriptors are passed by the gadget driver to the UVC function driver, making them completely configurable without any modification to the function's driver code. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/f_uvc.h')
-rw-r--r--drivers/usb/gadget/f_uvc.h376
1 files changed, 376 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_uvc.h b/drivers/usb/gadget/f_uvc.h
new file mode 100644
index 000000000000..8a5db7c4fe7c
--- /dev/null
+++ b/drivers/usb/gadget/f_uvc.h
@@ -0,0 +1,376 @@
1/*
2 * f_uvc.h -- USB Video Class Gadget driver
3 *
4 * Copyright (C) 2009-2010
5 * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 */
13
14#ifndef _F_UVC_H_
15#define _F_UVC_H_
16
17#include <linux/usb/composite.h>
18
19#define USB_CLASS_VIDEO_CONTROL 1
20#define USB_CLASS_VIDEO_STREAMING 2
21
22struct uvc_descriptor_header {
23 __u8 bLength;
24 __u8 bDescriptorType;
25 __u8 bDescriptorSubType;
26} __attribute__ ((packed));
27
28struct uvc_header_descriptor {
29 __u8 bLength;
30 __u8 bDescriptorType;
31 __u8 bDescriptorSubType;
32 __u16 bcdUVC;
33 __u16 wTotalLength;
34 __u32 dwClockFrequency;
35 __u8 bInCollection;
36 __u8 baInterfaceNr[];
37} __attribute__((__packed__));
38
39#define UVC_HEADER_DESCRIPTOR(n) uvc_header_descriptor_##n
40
41#define DECLARE_UVC_HEADER_DESCRIPTOR(n) \
42struct UVC_HEADER_DESCRIPTOR(n) { \
43 __u8 bLength; \
44 __u8 bDescriptorType; \
45 __u8 bDescriptorSubType; \
46 __u16 bcdUVC; \
47 __u16 wTotalLength; \
48 __u32 dwClockFrequency; \
49 __u8 bInCollection; \
50 __u8 baInterfaceNr[n]; \
51} __attribute__ ((packed))
52
53struct uvc_input_terminal_descriptor {
54 __u8 bLength;
55 __u8 bDescriptorType;
56 __u8 bDescriptorSubType;
57 __u8 bTerminalID;
58 __u16 wTerminalType;
59 __u8 bAssocTerminal;
60 __u8 iTerminal;
61} __attribute__((__packed__));
62
63struct uvc_output_terminal_descriptor {
64 __u8 bLength;
65 __u8 bDescriptorType;
66 __u8 bDescriptorSubType;
67 __u8 bTerminalID;
68 __u16 wTerminalType;
69 __u8 bAssocTerminal;
70 __u8 bSourceID;
71 __u8 iTerminal;
72} __attribute__((__packed__));
73
74struct uvc_camera_terminal_descriptor {
75 __u8 bLength;
76 __u8 bDescriptorType;
77 __u8 bDescriptorSubType;
78 __u8 bTerminalID;
79 __u16 wTerminalType;
80 __u8 bAssocTerminal;
81 __u8 iTerminal;
82 __u16 wObjectiveFocalLengthMin;
83 __u16 wObjectiveFocalLengthMax;
84 __u16 wOcularFocalLength;
85 __u8 bControlSize;
86 __u8 bmControls[3];
87} __attribute__((__packed__));
88
89struct uvc_selector_unit_descriptor {
90 __u8 bLength;
91 __u8 bDescriptorType;
92 __u8 bDescriptorSubType;
93 __u8 bUnitID;
94 __u8 bNrInPins;
95 __u8 baSourceID[0];
96 __u8 iSelector;
97} __attribute__((__packed__));
98
99#define UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
100 uvc_selector_unit_descriptor_##n
101
102#define DECLARE_UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
103struct UVC_SELECTOR_UNIT_DESCRIPTOR(n) { \
104 __u8 bLength; \
105 __u8 bDescriptorType; \
106 __u8 bDescriptorSubType; \
107 __u8 bUnitID; \
108 __u8 bNrInPins; \
109 __u8 baSourceID[n]; \
110 __u8 iSelector; \
111} __attribute__ ((packed))
112
113struct uvc_processing_unit_descriptor {
114 __u8 bLength;
115 __u8 bDescriptorType;
116 __u8 bDescriptorSubType;
117 __u8 bUnitID;
118 __u8 bSourceID;
119 __u16 wMaxMultiplier;
120 __u8 bControlSize;
121 __u8 bmControls[2];
122 __u8 iProcessing;
123} __attribute__((__packed__));
124
125struct uvc_extension_unit_descriptor {
126 __u8 bLength;
127 __u8 bDescriptorType;
128 __u8 bDescriptorSubType;
129 __u8 bUnitID;
130 __u8 guidExtensionCode[16];
131 __u8 bNumControls;
132 __u8 bNrInPins;
133 __u8 baSourceID[0];
134 __u8 bControlSize;
135 __u8 bmControls[0];
136 __u8 iExtension;
137} __attribute__((__packed__));
138
139#define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
140 uvc_extension_unit_descriptor_##p_##n
141
142#define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
143struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \
144 __u8 bLength; \
145 __u8 bDescriptorType; \
146 __u8 bDescriptorSubType; \
147 __u8 bUnitID; \
148 __u8 guidExtensionCode[16]; \
149 __u8 bNumControls; \
150 __u8 bNrInPins; \
151 __u8 baSourceID[p]; \
152 __u8 bControlSize; \
153 __u8 bmControls[n]; \
154 __u8 iExtension; \
155} __attribute__ ((packed))
156
157struct uvc_control_endpoint_descriptor {
158 __u8 bLength;
159 __u8 bDescriptorType;
160 __u8 bDescriptorSubType;
161 __u16 wMaxTransferSize;
162} __attribute__((__packed__));
163
164#define UVC_DT_HEADER 1
165#define UVC_DT_INPUT_TERMINAL 2
166#define UVC_DT_OUTPUT_TERMINAL 3
167#define UVC_DT_SELECTOR_UNIT 4
168#define UVC_DT_PROCESSING_UNIT 5
169#define UVC_DT_EXTENSION_UNIT 6
170
171#define UVC_DT_HEADER_SIZE(n) (12+(n))
172#define UVC_DT_INPUT_TERMINAL_SIZE 8
173#define UVC_DT_OUTPUT_TERMINAL_SIZE 9
174#define UVC_DT_CAMERA_TERMINAL_SIZE(n) (15+(n))
175#define UVC_DT_SELECTOR_UNIT_SIZE(n) (6+(n))
176#define UVC_DT_PROCESSING_UNIT_SIZE(n) (9+(n))
177#define UVC_DT_EXTENSION_UNIT_SIZE(p,n) (24+(p)+(n))
178#define UVC_DT_CONTROL_ENDPOINT_SIZE 5
179
180struct uvc_input_header_descriptor {
181 __u8 bLength;
182 __u8 bDescriptorType;
183 __u8 bDescriptorSubType;
184 __u8 bNumFormats;
185 __u16 wTotalLength;
186 __u8 bEndpointAddress;
187 __u8 bmInfo;
188 __u8 bTerminalLink;
189 __u8 bStillCaptureMethod;
190 __u8 bTriggerSupport;
191 __u8 bTriggerUsage;
192 __u8 bControlSize;
193 __u8 bmaControls[];
194} __attribute__((__packed__));
195
196#define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
197 uvc_input_header_descriptor_##n_##p
198
199#define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
200struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \
201 __u8 bLength; \
202 __u8 bDescriptorType; \
203 __u8 bDescriptorSubType; \
204 __u8 bNumFormats; \
205 __u16 wTotalLength; \
206 __u8 bEndpointAddress; \
207 __u8 bmInfo; \
208 __u8 bTerminalLink; \
209 __u8 bStillCaptureMethod; \
210 __u8 bTriggerSupport; \
211 __u8 bTriggerUsage; \
212 __u8 bControlSize; \
213 __u8 bmaControls[p][n]; \
214} __attribute__ ((packed))
215
216struct uvc_output_header_descriptor {
217 __u8 bLength;
218 __u8 bDescriptorType;
219 __u8 bDescriptorSubType;
220 __u8 bNumFormats;
221 __u16 wTotalLength;
222 __u8 bEndpointAddress;
223 __u8 bTerminalLink;
224 __u8 bControlSize;
225 __u8 bmaControls[];
226} __attribute__((__packed__));
227
228#define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
229 uvc_output_header_descriptor_##n_##p
230
231#define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
232struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \
233 __u8 bLength; \
234 __u8 bDescriptorType; \
235 __u8 bDescriptorSubType; \
236 __u8 bNumFormats; \
237 __u16 wTotalLength; \
238 __u8 bEndpointAddress; \
239 __u8 bTerminalLink; \
240 __u8 bControlSize; \
241 __u8 bmaControls[p][n]; \
242} __attribute__ ((packed))
243
244struct uvc_format_uncompressed {
245 __u8 bLength;
246 __u8 bDescriptorType;
247 __u8 bDescriptorSubType;
248 __u8 bFormatIndex;
249 __u8 bNumFrameDescriptors;
250 __u8 guidFormat[16];
251 __u8 bBitsPerPixel;
252 __u8 bDefaultFrameIndex;
253 __u8 bAspectRatioX;
254 __u8 bAspectRatioY;
255 __u8 bmInterfaceFlags;
256 __u8 bCopyProtect;
257} __attribute__((__packed__));
258
259struct uvc_frame_uncompressed {
260 __u8 bLength;
261 __u8 bDescriptorType;
262 __u8 bDescriptorSubType;
263 __u8 bFrameIndex;
264 __u8 bmCapabilities;
265 __u16 wWidth;
266 __u16 wHeight;
267 __u32 dwMinBitRate;
268 __u32 dwMaxBitRate;
269 __u32 dwMaxVideoFrameBufferSize;
270 __u32 dwDefaultFrameInterval;
271 __u8 bFrameIntervalType;
272 __u32 dwFrameInterval[];
273} __attribute__((__packed__));
274
275#define UVC_FRAME_UNCOMPRESSED(n) \
276 uvc_frame_uncompressed_##n
277
278#define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \
279struct UVC_FRAME_UNCOMPRESSED(n) { \
280 __u8 bLength; \
281 __u8 bDescriptorType; \
282 __u8 bDescriptorSubType; \
283 __u8 bFrameIndex; \
284 __u8 bmCapabilities; \
285 __u16 wWidth; \
286 __u16 wHeight; \
287 __u32 dwMinBitRate; \
288 __u32 dwMaxBitRate; \
289 __u32 dwMaxVideoFrameBufferSize; \
290 __u32 dwDefaultFrameInterval; \
291 __u8 bFrameIntervalType; \
292 __u32 dwFrameInterval[n]; \
293} __attribute__ ((packed))
294
295struct uvc_format_mjpeg {
296 __u8 bLength;
297 __u8 bDescriptorType;
298 __u8 bDescriptorSubType;
299 __u8 bFormatIndex;
300 __u8 bNumFrameDescriptors;
301 __u8 bmFlags;
302 __u8 bDefaultFrameIndex;
303 __u8 bAspectRatioX;
304 __u8 bAspectRatioY;
305 __u8 bmInterfaceFlags;
306 __u8 bCopyProtect;
307} __attribute__((__packed__));
308
309struct uvc_frame_mjpeg {
310 __u8 bLength;
311 __u8 bDescriptorType;
312 __u8 bDescriptorSubType;
313 __u8 bFrameIndex;
314 __u8 bmCapabilities;
315 __u16 wWidth;
316 __u16 wHeight;
317 __u32 dwMinBitRate;
318 __u32 dwMaxBitRate;
319 __u32 dwMaxVideoFrameBufferSize;
320 __u32 dwDefaultFrameInterval;
321 __u8 bFrameIntervalType;
322 __u32 dwFrameInterval[];
323} __attribute__((__packed__));
324
325#define UVC_FRAME_MJPEG(n) \
326 uvc_frame_mjpeg_##n
327
328#define DECLARE_UVC_FRAME_MJPEG(n) \
329struct UVC_FRAME_MJPEG(n) { \
330 __u8 bLength; \
331 __u8 bDescriptorType; \
332 __u8 bDescriptorSubType; \
333 __u8 bFrameIndex; \
334 __u8 bmCapabilities; \
335 __u16 wWidth; \
336 __u16 wHeight; \
337 __u32 dwMinBitRate; \
338 __u32 dwMaxBitRate; \
339 __u32 dwMaxVideoFrameBufferSize; \
340 __u32 dwDefaultFrameInterval; \
341 __u8 bFrameIntervalType; \
342 __u32 dwFrameInterval[n]; \
343} __attribute__ ((packed))
344
345struct uvc_color_matching_descriptor {
346 __u8 bLength;
347 __u8 bDescriptorType;
348 __u8 bDescriptorSubType;
349 __u8 bColorPrimaries;
350 __u8 bTransferCharacteristics;
351 __u8 bMatrixCoefficients;
352} __attribute__((__packed__));
353
354#define UVC_DT_INPUT_HEADER 1
355#define UVC_DT_OUTPUT_HEADER 2
356#define UVC_DT_FORMAT_UNCOMPRESSED 4
357#define UVC_DT_FRAME_UNCOMPRESSED 5
358#define UVC_DT_FORMAT_MJPEG 6
359#define UVC_DT_FRAME_MJPEG 7
360#define UVC_DT_COLOR_MATCHING 13
361
362#define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p))
363#define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p))
364#define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27
365#define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n))
366#define UVC_DT_FORMAT_MJPEG_SIZE 11
367#define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n))
368#define UVC_DT_COLOR_MATCHING_SIZE 6
369
370extern int uvc_bind_config(struct usb_configuration *c,
371 const struct uvc_descriptor_header * const *control,
372 const struct uvc_descriptor_header * const *fs_streaming,
373 const struct uvc_descriptor_header * const *hs_streaming);
374
375#endif /* _F_UVC_H_ */
376
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 09:16:08 -0500