include/linux/usb/video.h

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