1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * USB Video Class definitions.
4 *
5 * Copyright (C) 2009 Laurent Pinchart <laurent.pinchart@skynet.be>
6 *
7 * This file holds USB constants and structures defined by the USB Device
8 * Class Definition for Video Devices. Unless otherwise stated, comments
9 * below reference relevant sections of the USB Video Class 1.1 specification
10 * available at
11 *
12 * http://www.usb.org/developers/devclass_docs/USB_Video_Class_1_1.zip
13 */
14
15#ifndef __LINUX_USB_VIDEO_H
16#define __LINUX_USB_VIDEO_H
17
18#include <linux/types.h>
19
20/* --------------------------------------------------------------------------
21 * UVC constants
22 */
23
24/* A.2. Video Interface Subclass Codes */
25#define UVC_SC_UNDEFINED 0x00
26#define UVC_SC_VIDEOCONTROL 0x01
27#define UVC_SC_VIDEOSTREAMING 0x02
28#define UVC_SC_VIDEO_INTERFACE_COLLECTION 0x03
29
30/* A.3. Video Interface Protocol Codes */
31#define UVC_PC_PROTOCOL_UNDEFINED 0x00
32#define UVC_PC_PROTOCOL_15 0x01
33
34/* A.5. Video Class-Specific VC Interface Descriptor Subtypes */
35#define UVC_VC_DESCRIPTOR_UNDEFINED 0x00
36#define UVC_VC_HEADER 0x01
37#define UVC_VC_INPUT_TERMINAL 0x02
38#define UVC_VC_OUTPUT_TERMINAL 0x03
39#define UVC_VC_SELECTOR_UNIT 0x04
40#define UVC_VC_PROCESSING_UNIT 0x05
41#define UVC_VC_EXTENSION_UNIT 0x06
42
43/* A.6. Video Class-Specific VS Interface Descriptor Subtypes */
44#define UVC_VS_UNDEFINED 0x00
45#define UVC_VS_INPUT_HEADER 0x01
46#define UVC_VS_OUTPUT_HEADER 0x02
47#define UVC_VS_STILL_IMAGE_FRAME 0x03
48#define UVC_VS_FORMAT_UNCOMPRESSED 0x04
49#define UVC_VS_FRAME_UNCOMPRESSED 0x05
50#define UVC_VS_FORMAT_MJPEG 0x06
51#define UVC_VS_FRAME_MJPEG 0x07
52#define UVC_VS_FORMAT_MPEG2TS 0x0a
53#define UVC_VS_FORMAT_DV 0x0c
54#define UVC_VS_COLORFORMAT 0x0d
55#define UVC_VS_FORMAT_FRAME_BASED 0x10
56#define UVC_VS_FRAME_FRAME_BASED 0x11
57#define UVC_VS_FORMAT_STREAM_BASED 0x12
58
59/* A.7. Video Class-Specific Endpoint Descriptor Subtypes */
60#define UVC_EP_UNDEFINED 0x00
61#define UVC_EP_GENERAL 0x01
62#define UVC_EP_ENDPOINT 0x02
63#define UVC_EP_INTERRUPT 0x03
64
65/* A.8. Video Class-Specific Request Codes */
66#define UVC_RC_UNDEFINED 0x00
67#define UVC_SET_CUR 0x01
68#define UVC_GET_CUR 0x81
69#define UVC_GET_MIN 0x82
70#define UVC_GET_MAX 0x83
71#define UVC_GET_RES 0x84
72#define UVC_GET_LEN 0x85
73#define UVC_GET_INFO 0x86
74#define UVC_GET_DEF 0x87
75
76/* A.9.1. VideoControl Interface Control Selectors */
77#define UVC_VC_CONTROL_UNDEFINED 0x00
78#define UVC_VC_VIDEO_POWER_MODE_CONTROL 0x01
79#define UVC_VC_REQUEST_ERROR_CODE_CONTROL 0x02
80
81/* A.9.2. Terminal Control Selectors */
82#define UVC_TE_CONTROL_UNDEFINED 0x00
83
84/* A.9.3. Selector Unit Control Selectors */
85#define UVC_SU_CONTROL_UNDEFINED 0x00
86#define UVC_SU_INPUT_SELECT_CONTROL 0x01
87
88/* A.9.4. Camera Terminal Control Selectors */
89#define UVC_CT_CONTROL_UNDEFINED 0x00
90#define UVC_CT_SCANNING_MODE_CONTROL 0x01
91#define UVC_CT_AE_MODE_CONTROL 0x02
92#define UVC_CT_AE_PRIORITY_CONTROL 0x03
93#define UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04
94#define UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05
95#define UVC_CT_FOCUS_ABSOLUTE_CONTROL 0x06
96#define UVC_CT_FOCUS_RELATIVE_CONTROL 0x07
97#define UVC_CT_FOCUS_AUTO_CONTROL 0x08
98#define UVC_CT_IRIS_ABSOLUTE_CONTROL 0x09
99#define UVC_CT_IRIS_RELATIVE_CONTROL 0x0a
100#define UVC_CT_ZOOM_ABSOLUTE_CONTROL 0x0b
101#define UVC_CT_ZOOM_RELATIVE_CONTROL 0x0c
102#define UVC_CT_PANTILT_ABSOLUTE_CONTROL 0x0d
103#define UVC_CT_PANTILT_RELATIVE_CONTROL 0x0e
104#define UVC_CT_ROLL_ABSOLUTE_CONTROL 0x0f
105#define UVC_CT_ROLL_RELATIVE_CONTROL 0x10
106#define UVC_CT_PRIVACY_CONTROL 0x11
107
108/* A.9.5. Processing Unit Control Selectors */
109#define UVC_PU_CONTROL_UNDEFINED 0x00
110#define UVC_PU_BACKLIGHT_COMPENSATION_CONTROL 0x01
111#define UVC_PU_BRIGHTNESS_CONTROL 0x02
112#define UVC_PU_CONTRAST_CONTROL 0x03
113#define UVC_PU_GAIN_CONTROL 0x04
114#define UVC_PU_POWER_LINE_FREQUENCY_CONTROL 0x05
115#define UVC_PU_HUE_CONTROL 0x06
116#define UVC_PU_SATURATION_CONTROL 0x07
117#define UVC_PU_SHARPNESS_CONTROL 0x08
118#define UVC_PU_GAMMA_CONTROL 0x09
119#define UVC_PU_WHITE_BALANCE_TEMPERATURE_CONTROL 0x0a
120#define UVC_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL 0x0b
121#define UVC_PU_WHITE_BALANCE_COMPONENT_CONTROL 0x0c
122#define UVC_PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL 0x0d
123#define UVC_PU_DIGITAL_MULTIPLIER_CONTROL 0x0e
124#define UVC_PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL 0x0f
125#define UVC_PU_HUE_AUTO_CONTROL 0x10
126#define UVC_PU_ANALOG_VIDEO_STANDARD_CONTROL 0x11
127#define UVC_PU_ANALOG_LOCK_STATUS_CONTROL 0x12
128
129/* A.9.7. VideoStreaming Interface Control Selectors */
130#define UVC_VS_CONTROL_UNDEFINED 0x00
131#define UVC_VS_PROBE_CONTROL 0x01
132#define UVC_VS_COMMIT_CONTROL 0x02
133#define UVC_VS_STILL_PROBE_CONTROL 0x03
134#define UVC_VS_STILL_COMMIT_CONTROL 0x04
135#define UVC_VS_STILL_IMAGE_TRIGGER_CONTROL 0x05
136#define UVC_VS_STREAM_ERROR_CODE_CONTROL 0x06
137#define UVC_VS_GENERATE_KEY_FRAME_CONTROL 0x07
138#define UVC_VS_UPDATE_FRAME_SEGMENT_CONTROL 0x08
139#define UVC_VS_SYNC_DELAY_CONTROL 0x09
140
141/* B.1. USB Terminal Types */
142#define UVC_TT_VENDOR_SPECIFIC 0x0100
143#define UVC_TT_STREAMING 0x0101
144
145/* B.2. Input Terminal Types */
146#define UVC_ITT_VENDOR_SPECIFIC 0x0200
147#define UVC_ITT_CAMERA 0x0201
148#define UVC_ITT_MEDIA_TRANSPORT_INPUT 0x0202
149
150/* B.3. Output Terminal Types */
151#define UVC_OTT_VENDOR_SPECIFIC 0x0300
152#define UVC_OTT_DISPLAY 0x0301
153#define UVC_OTT_MEDIA_TRANSPORT_OUTPUT 0x0302
154
155/* B.4. External Terminal Types */
156#define UVC_EXTERNAL_VENDOR_SPECIFIC 0x0400
157#define UVC_COMPOSITE_CONNECTOR 0x0401
158#define UVC_SVIDEO_CONNECTOR 0x0402
159#define UVC_COMPONENT_CONNECTOR 0x0403
160
161/* 2.4.2.2. Status Packet Type */
162#define UVC_STATUS_TYPE_CONTROL 1
163#define UVC_STATUS_TYPE_STREAMING 2
164
165/* 2.4.3.3. Payload Header Information */
166#define UVC_STREAM_EOH (1 << 7)
167#define UVC_STREAM_ERR (1 << 6)
168#define UVC_STREAM_STI (1 << 5)
169#define UVC_STREAM_RES (1 << 4)
170#define UVC_STREAM_SCR (1 << 3)
171#define UVC_STREAM_PTS (1 << 2)
172#define UVC_STREAM_EOF (1 << 1)
173#define UVC_STREAM_FID (1 << 0)
174
175/* 4.1.2. Control Capabilities */
176#define UVC_CONTROL_CAP_GET (1 << 0)
177#define UVC_CONTROL_CAP_SET (1 << 1)
178#define UVC_CONTROL_CAP_DISABLED (1 << 2)
179#define UVC_CONTROL_CAP_AUTOUPDATE (1 << 3)
180#define UVC_CONTROL_CAP_ASYNCHRONOUS (1 << 4)
181
182/* 3.9.2.6 Color Matching Descriptor Values */
183enum uvc_color_primaries_values {
184 UVC_COLOR_PRIMARIES_UNSPECIFIED,
185 UVC_COLOR_PRIMARIES_BT_709_SRGB,
186 UVC_COLOR_PRIMARIES_BT_470_2_M,
187 UVC_COLOR_PRIMARIES_BT_470_2_B_G,
188 UVC_COLOR_PRIMARIES_SMPTE_170M,
189 UVC_COLOR_PRIMARIES_SMPTE_240M,
190};
191
192enum uvc_transfer_characteristics_values {
193 UVC_TRANSFER_CHARACTERISTICS_UNSPECIFIED,
194 UVC_TRANSFER_CHARACTERISTICS_BT_709,
195 UVC_TRANSFER_CHARACTERISTICS_BT_470_2_M,
196 UVC_TRANSFER_CHARACTERISTICS_BT_470_2_B_G,
197 UVC_TRANSFER_CHARACTERISTICS_SMPTE_170M,
198 UVC_TRANSFER_CHARACTERISTICS_SMPTE_240M,
199 UVC_TRANSFER_CHARACTERISTICS_LINEAR,
200 UVC_TRANSFER_CHARACTERISTICS_SRGB,
201};
202
203enum uvc_matrix_coefficients {
204 UVC_MATRIX_COEFFICIENTS_UNSPECIFIED,
205 UVC_MATRIX_COEFFICIENTS_BT_709,
206 UVC_MATRIX_COEFFICIENTS_FCC,
207 UVC_MATRIX_COEFFICIENTS_BT_470_2_B_G,
208 UVC_MATRIX_COEFFICIENTS_SMPTE_170M,
209 UVC_MATRIX_COEFFICIENTS_SMPTE_240M,
210};
211
212/* ------------------------------------------------------------------------
213 * UVC structures
214 */
215
216/* All UVC descriptors have these 3 fields at the beginning */
217struct uvc_descriptor_header {
218 __u8 bLength;
219 __u8 bDescriptorType;
220 __u8 bDescriptorSubType;
221} __attribute__((packed));
222
223/* 3.7.2. Video Control Interface Header Descriptor */
224struct uvc_header_descriptor {
225 __u8 bLength;
226 __u8 bDescriptorType;
227 __u8 bDescriptorSubType;
228 __le16 bcdUVC;
229 __le16 wTotalLength;
230 __le32 dwClockFrequency;
231 __u8 bInCollection;
232 __u8 baInterfaceNr[];
233} __attribute__((__packed__));
234
235#define UVC_DT_HEADER_SIZE(n) (12+(n))
236
237#define UVC_HEADER_DESCRIPTOR(n) \
238 uvc_header_descriptor_##n
239
240#define DECLARE_UVC_HEADER_DESCRIPTOR(n) \
241struct UVC_HEADER_DESCRIPTOR(n) { \
242 __u8 bLength; \
243 __u8 bDescriptorType; \
244 __u8 bDescriptorSubType; \
245 __le16 bcdUVC; \
246 __le16 wTotalLength; \
247 __le32 dwClockFrequency; \
248 __u8 bInCollection; \
249 __u8 baInterfaceNr[n]; \
250} __attribute__ ((packed))
251
252/* 3.7.2.1. Input Terminal Descriptor */
253struct uvc_input_terminal_descriptor {
254 __u8 bLength;
255 __u8 bDescriptorType;
256 __u8 bDescriptorSubType;
257 __u8 bTerminalID;
258 __le16 wTerminalType;
259 __u8 bAssocTerminal;
260 __u8 iTerminal;
261} __attribute__((__packed__));
262
263#define UVC_DT_INPUT_TERMINAL_SIZE 8
264
265/* 3.7.2.2. Output Terminal Descriptor */
266struct uvc_output_terminal_descriptor {
267 __u8 bLength;
268 __u8 bDescriptorType;
269 __u8 bDescriptorSubType;
270 __u8 bTerminalID;
271 __le16 wTerminalType;
272 __u8 bAssocTerminal;
273 __u8 bSourceID;
274 __u8 iTerminal;
275} __attribute__((__packed__));
276
277#define UVC_DT_OUTPUT_TERMINAL_SIZE 9
278
279/* 3.7.2.3. Camera Terminal Descriptor */
280struct uvc_camera_terminal_descriptor {
281 __u8 bLength;
282 __u8 bDescriptorType;
283 __u8 bDescriptorSubType;
284 __u8 bTerminalID;
285 __le16 wTerminalType;
286 __u8 bAssocTerminal;
287 __u8 iTerminal;
288 __le16 wObjectiveFocalLengthMin;
289 __le16 wObjectiveFocalLengthMax;
290 __le16 wOcularFocalLength;
291 __u8 bControlSize;
292 __u8 bmControls[3];
293} __attribute__((__packed__));
294
295#define UVC_DT_CAMERA_TERMINAL_SIZE(n) (15+(n))
296
297/* 3.7.2.4. Selector Unit Descriptor */
298struct uvc_selector_unit_descriptor {
299 __u8 bLength;
300 __u8 bDescriptorType;
301 __u8 bDescriptorSubType;
302 __u8 bUnitID;
303 __u8 bNrInPins;
304 __u8 baSourceID[0];
305 __u8 iSelector;
306} __attribute__((__packed__));
307
308#define UVC_DT_SELECTOR_UNIT_SIZE(n) (6+(n))
309
310#define UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
311 uvc_selector_unit_descriptor_##n
312
313#define DECLARE_UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
314struct UVC_SELECTOR_UNIT_DESCRIPTOR(n) { \
315 __u8 bLength; \
316 __u8 bDescriptorType; \
317 __u8 bDescriptorSubType; \
318 __u8 bUnitID; \
319 __u8 bNrInPins; \
320 __u8 baSourceID[n]; \
321 __u8 iSelector; \
322} __attribute__ ((packed))
323
324/* 3.7.2.5. Processing Unit Descriptor */
325struct uvc_processing_unit_descriptor {
326 __u8 bLength;
327 __u8 bDescriptorType;
328 __u8 bDescriptorSubType;
329 __u8 bUnitID;
330 __u8 bSourceID;
331 __le16 wMaxMultiplier;
332 __u8 bControlSize;
333 __u8 bmControls[2];
334 __u8 iProcessing;
335 __u8 bmVideoStandards;
336} __attribute__((__packed__));
337
338#define UVC_DT_PROCESSING_UNIT_SIZE(n) (10+(n))
339
340/* 3.7.2.6. Extension Unit Descriptor */
341struct uvc_extension_unit_descriptor {
342 __u8 bLength;
343 __u8 bDescriptorType;
344 __u8 bDescriptorSubType;
345 __u8 bUnitID;
346 __u8 guidExtensionCode[16];
347 __u8 bNumControls;
348 __u8 bNrInPins;
349 __u8 baSourceID[0];
350 __u8 bControlSize;
351 __u8 bmControls[0];
352 __u8 iExtension;
353} __attribute__((__packed__));
354
355#define UVC_DT_EXTENSION_UNIT_SIZE(p, n) (24+(p)+(n))
356
357#define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
358 uvc_extension_unit_descriptor_##p_##n
359
360#define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
361struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \
362 __u8 bLength; \
363 __u8 bDescriptorType; \
364 __u8 bDescriptorSubType; \
365 __u8 bUnitID; \
366 __u8 guidExtensionCode[16]; \
367 __u8 bNumControls; \
368 __u8 bNrInPins; \
369 __u8 baSourceID[p]; \
370 __u8 bControlSize; \
371 __u8 bmControls[n]; \
372 __u8 iExtension; \
373} __attribute__ ((packed))
374
375/* 3.8.2.2. Video Control Interrupt Endpoint Descriptor */
376struct uvc_control_endpoint_descriptor {
377 __u8 bLength;
378 __u8 bDescriptorType;
379 __u8 bDescriptorSubType;
380 __le16 wMaxTransferSize;
381} __attribute__((__packed__));
382
383#define UVC_DT_CONTROL_ENDPOINT_SIZE 5
384
385/* 3.9.2.1. Input Header Descriptor */
386struct uvc_input_header_descriptor {
387 __u8 bLength;
388 __u8 bDescriptorType;
389 __u8 bDescriptorSubType;
390 __u8 bNumFormats;
391 __le16 wTotalLength;
392 __u8 bEndpointAddress;
393 __u8 bmInfo;
394 __u8 bTerminalLink;
395 __u8 bStillCaptureMethod;
396 __u8 bTriggerSupport;
397 __u8 bTriggerUsage;
398 __u8 bControlSize;
399 __u8 bmaControls[];
400} __attribute__((__packed__));
401
402#define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p))
403
404#define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
405 uvc_input_header_descriptor_##n_##p
406
407#define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
408struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \
409 __u8 bLength; \
410 __u8 bDescriptorType; \
411 __u8 bDescriptorSubType; \
412 __u8 bNumFormats; \
413 __le16 wTotalLength; \
414 __u8 bEndpointAddress; \
415 __u8 bmInfo; \
416 __u8 bTerminalLink; \
417 __u8 bStillCaptureMethod; \
418 __u8 bTriggerSupport; \
419 __u8 bTriggerUsage; \
420 __u8 bControlSize; \
421 __u8 bmaControls[p][n]; \
422} __attribute__ ((packed))
423
424/* 3.9.2.2. Output Header Descriptor */
425struct uvc_output_header_descriptor {
426 __u8 bLength;
427 __u8 bDescriptorType;
428 __u8 bDescriptorSubType;
429 __u8 bNumFormats;
430 __le16 wTotalLength;
431 __u8 bEndpointAddress;
432 __u8 bTerminalLink;
433 __u8 bControlSize;
434 __u8 bmaControls[];
435} __attribute__((__packed__));
436
437#define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p))
438
439#define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
440 uvc_output_header_descriptor_##n_##p
441
442#define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
443struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \
444 __u8 bLength; \
445 __u8 bDescriptorType; \
446 __u8 bDescriptorSubType; \
447 __u8 bNumFormats; \
448 __le16 wTotalLength; \
449 __u8 bEndpointAddress; \
450 __u8 bTerminalLink; \
451 __u8 bControlSize; \
452 __u8 bmaControls[p][n]; \
453} __attribute__ ((packed))
454
455/* 3.9.2.6. Color matching descriptor */
456struct uvc_color_matching_descriptor {
457 __u8 bLength;
458 __u8 bDescriptorType;
459 __u8 bDescriptorSubType;
460 __u8 bColorPrimaries;
461 __u8 bTransferCharacteristics;
462 __u8 bMatrixCoefficients;
463} __attribute__((__packed__));
464
465#define UVC_DT_COLOR_MATCHING_SIZE 6
466
467/* 4.3.1.1. Video Probe and Commit Controls */
468struct uvc_streaming_control {
469 __u16 bmHint;
470 __u8 bFormatIndex;
471 __u8 bFrameIndex;
472 __u32 dwFrameInterval;
473 __u16 wKeyFrameRate;
474 __u16 wPFrameRate;
475 __u16 wCompQuality;
476 __u16 wCompWindowSize;
477 __u16 wDelay;
478 __u32 dwMaxVideoFrameSize;
479 __u32 dwMaxPayloadTransferSize;
480 __u32 dwClockFrequency;
481 __u8 bmFramingInfo;
482 __u8 bPreferedVersion;
483 __u8 bMinVersion;
484 __u8 bMaxVersion;
485} __attribute__((__packed__));
486
487/* Uncompressed Payload - 3.1.1. Uncompressed Video Format Descriptor */
488struct uvc_format_uncompressed {
489 __u8 bLength;
490 __u8 bDescriptorType;
491 __u8 bDescriptorSubType;
492 __u8 bFormatIndex;
493 __u8 bNumFrameDescriptors;
494 __u8 guidFormat[16];
495 __u8 bBitsPerPixel;
496 __u8 bDefaultFrameIndex;
497 __u8 bAspectRatioX;
498 __u8 bAspectRatioY;
499 __u8 bmInterfaceFlags;
500 __u8 bCopyProtect;
501} __attribute__((__packed__));
502
503#define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27
504
505/* Uncompressed Payload - 3.1.2. Uncompressed Video Frame Descriptor */
506struct uvc_frame_uncompressed {
507 __u8 bLength;
508 __u8 bDescriptorType;
509 __u8 bDescriptorSubType;
510 __u8 bFrameIndex;
511 __u8 bmCapabilities;
512 __le16 wWidth;
513 __le16 wHeight;
514 __le32 dwMinBitRate;
515 __le32 dwMaxBitRate;
516 __le32 dwMaxVideoFrameBufferSize;
517 __le32 dwDefaultFrameInterval;
518 __u8 bFrameIntervalType;
519 __le32 dwFrameInterval[];
520} __attribute__((__packed__));
521
522#define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n))
523
524#define UVC_FRAME_UNCOMPRESSED(n) \
525 uvc_frame_uncompressed_##n
526
527#define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \
528struct UVC_FRAME_UNCOMPRESSED(n) { \
529 __u8 bLength; \
530 __u8 bDescriptorType; \
531 __u8 bDescriptorSubType; \
532 __u8 bFrameIndex; \
533 __u8 bmCapabilities; \
534 __le16 wWidth; \
535 __le16 wHeight; \
536 __le32 dwMinBitRate; \
537 __le32 dwMaxBitRate; \
538 __le32 dwMaxVideoFrameBufferSize; \
539 __le32 dwDefaultFrameInterval; \
540 __u8 bFrameIntervalType; \
541 __le32 dwFrameInterval[n]; \
542} __attribute__ ((packed))
543
544/* MJPEG Payload - 3.1.1. MJPEG Video Format Descriptor */
545struct uvc_format_mjpeg {
546 __u8 bLength;
547 __u8 bDescriptorType;
548 __u8 bDescriptorSubType;
549 __u8 bFormatIndex;
550 __u8 bNumFrameDescriptors;
551 __u8 bmFlags;
552 __u8 bDefaultFrameIndex;
553 __u8 bAspectRatioX;
554 __u8 bAspectRatioY;
555 __u8 bmInterfaceFlags;
556 __u8 bCopyProtect;
557} __attribute__((__packed__));
558
559#define UVC_DT_FORMAT_MJPEG_SIZE 11
560
561/* MJPEG Payload - 3.1.2. MJPEG Video Frame Descriptor */
562struct uvc_frame_mjpeg {
563 __u8 bLength;
564 __u8 bDescriptorType;
565 __u8 bDescriptorSubType;
566 __u8 bFrameIndex;
567 __u8 bmCapabilities;
568 __le16 wWidth;
569 __le16 wHeight;
570 __le32 dwMinBitRate;
571 __le32 dwMaxBitRate;
572 __le32 dwMaxVideoFrameBufferSize;
573 __le32 dwDefaultFrameInterval;
574 __u8 bFrameIntervalType;
575 __le32 dwFrameInterval[];
576} __attribute__((__packed__));
577
578#define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n))
579
580#define UVC_FRAME_MJPEG(n) \
581 uvc_frame_mjpeg_##n
582
583#define DECLARE_UVC_FRAME_MJPEG(n) \
584struct UVC_FRAME_MJPEG(n) { \
585 __u8 bLength; \
586 __u8 bDescriptorType; \
587 __u8 bDescriptorSubType; \
588 __u8 bFrameIndex; \
589 __u8 bmCapabilities; \
590 __le16 wWidth; \
591 __le16 wHeight; \
592 __le32 dwMinBitRate; \
593 __le32 dwMaxBitRate; \
594 __le32 dwMaxVideoFrameBufferSize; \
595 __le32 dwDefaultFrameInterval; \
596 __u8 bFrameIntervalType; \
597 __le32 dwFrameInterval[n]; \
598} __attribute__ ((packed))
599
600#endif /* __LINUX_USB_VIDEO_H */
601
602

source code of include/linux/usb/video.h