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 /* ------------------------------------------------------------------------ 183 * UVC structures 184 */ 185 186 /* All UVC descriptors have these 3 fields at the beginning */ 187 struct uvc_descriptor_header { 188 __u8 bLength; 189 __u8 bDescriptorType; 190 __u8 bDescriptorSubType; 191 } __attribute__((packed)); 192 193 /* 3.7.2. Video Control Interface Header Descriptor */ 194 struct uvc_header_descriptor { 195 __u8 bLength; 196 __u8 bDescriptorType; 197 __u8 bDescriptorSubType; 198 __le16 bcdUVC; 199 __le16 wTotalLength; 200 __le32 dwClockFrequency; 201 __u8 bInCollection; 202 __u8 baInterfaceNr[]; 203 } __attribute__((__packed__)); 204 205 #define UVC_DT_HEADER_SIZE(n) (12+(n)) 206 207 #define UVC_HEADER_DESCRIPTOR(n) \ 208 uvc_header_descriptor_##n 209 210 #define DECLARE_UVC_HEADER_DESCRIPTOR(n) \ 211 struct UVC_HEADER_DESCRIPTOR(n) { \ 212 __u8 bLength; \ 213 __u8 bDescriptorType; \ 214 __u8 bDescriptorSubType; \ 215 __le16 bcdUVC; \ 216 __le16 wTotalLength; \ 217 __le32 dwClockFrequency; \ 218 __u8 bInCollection; \ 219 __u8 baInterfaceNr[n]; \ 220 } __attribute__ ((packed)) 221 222 /* 3.7.2.1. Input Terminal Descriptor */ 223 struct uvc_input_terminal_descriptor { 224 __u8 bLength; 225 __u8 bDescriptorType; 226 __u8 bDescriptorSubType; 227 __u8 bTerminalID; 228 __le16 wTerminalType; 229 __u8 bAssocTerminal; 230 __u8 iTerminal; 231 } __attribute__((__packed__)); 232 233 #define UVC_DT_INPUT_TERMINAL_SIZE 8 234 235 /* 3.7.2.2. Output Terminal Descriptor */ 236 struct uvc_output_terminal_descriptor { 237 __u8 bLength; 238 __u8 bDescriptorType; 239 __u8 bDescriptorSubType; 240 __u8 bTerminalID; 241 __le16 wTerminalType; 242 __u8 bAssocTerminal; 243 __u8 bSourceID; 244 __u8 iTerminal; 245 } __attribute__((__packed__)); 246 247 #define UVC_DT_OUTPUT_TERMINAL_SIZE 9 248 249 /* 3.7.2.3. Camera Terminal Descriptor */ 250 struct uvc_camera_terminal_descriptor { 251 __u8 bLength; 252 __u8 bDescriptorType; 253 __u8 bDescriptorSubType; 254 __u8 bTerminalID; 255 __le16 wTerminalType; 256 __u8 bAssocTerminal; 257 __u8 iTerminal; 258 __le16 wObjectiveFocalLengthMin; 259 __le16 wObjectiveFocalLengthMax; 260 __le16 wOcularFocalLength; 261 __u8 bControlSize; 262 __u8 bmControls[3]; 263 } __attribute__((__packed__)); 264 265 #define UVC_DT_CAMERA_TERMINAL_SIZE(n) (15+(n)) 266 267 /* 3.7.2.4. Selector Unit Descriptor */ 268 struct uvc_selector_unit_descriptor { 269 __u8 bLength; 270 __u8 bDescriptorType; 271 __u8 bDescriptorSubType; 272 __u8 bUnitID; 273 __u8 bNrInPins; 274 __u8 baSourceID[0]; 275 __u8 iSelector; 276 } __attribute__((__packed__)); 277 278 #define UVC_DT_SELECTOR_UNIT_SIZE(n) (6+(n)) 279 280 #define UVC_SELECTOR_UNIT_DESCRIPTOR(n) \ 281 uvc_selector_unit_descriptor_##n 282 283 #define DECLARE_UVC_SELECTOR_UNIT_DESCRIPTOR(n) \ 284 struct UVC_SELECTOR_UNIT_DESCRIPTOR(n) { \ 285 __u8 bLength; \ 286 __u8 bDescriptorType; \ 287 __u8 bDescriptorSubType; \ 288 __u8 bUnitID; \ 289 __u8 bNrInPins; \ 290 __u8 baSourceID[n]; \ 291 __u8 iSelector; \ 292 } __attribute__ ((packed)) 293 294 /* 3.7.2.5. Processing Unit Descriptor */ 295 struct uvc_processing_unit_descriptor { 296 __u8 bLength; 297 __u8 bDescriptorType; 298 __u8 bDescriptorSubType; 299 __u8 bUnitID; 300 __u8 bSourceID; 301 __le16 wMaxMultiplier; 302 __u8 bControlSize; 303 __u8 bmControls[2]; 304 __u8 iProcessing; 305 __u8 bmVideoStandards; 306 } __attribute__((__packed__)); 307 308 #define UVC_DT_PROCESSING_UNIT_SIZE(n) (10+(n)) 309 310 /* 3.7.2.6. Extension Unit Descriptor */ 311 struct uvc_extension_unit_descriptor { 312 __u8 bLength; 313 __u8 bDescriptorType; 314 __u8 bDescriptorSubType; 315 __u8 bUnitID; 316 __u8 guidExtensionCode[16]; 317 __u8 bNumControls; 318 __u8 bNrInPins; 319 __u8 baSourceID[0]; 320 __u8 bControlSize; 321 __u8 bmControls[0]; 322 __u8 iExtension; 323 } __attribute__((__packed__)); 324 325 #define UVC_DT_EXTENSION_UNIT_SIZE(p, n) (24+(p)+(n)) 326 327 #define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ 328 uvc_extension_unit_descriptor_##p_##n 329 330 #define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ 331 struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \ 332 __u8 bLength; \ 333 __u8 bDescriptorType; \ 334 __u8 bDescriptorSubType; \ 335 __u8 bUnitID; \ 336 __u8 guidExtensionCode[16]; \ 337 __u8 bNumControls; \ 338 __u8 bNrInPins; \ 339 __u8 baSourceID[p]; \ 340 __u8 bControlSize; \ 341 __u8 bmControls[n]; \ 342 __u8 iExtension; \ 343 } __attribute__ ((packed)) 344 345 /* 3.8.2.2. Video Control Interrupt Endpoint Descriptor */ 346 struct uvc_control_endpoint_descriptor { 347 __u8 bLength; 348 __u8 bDescriptorType; 349 __u8 bDescriptorSubType; 350 __le16 wMaxTransferSize; 351 } __attribute__((__packed__)); 352 353 #define UVC_DT_CONTROL_ENDPOINT_SIZE 5 354 355 /* 3.9.2.1. Input Header Descriptor */ 356 struct uvc_input_header_descriptor { 357 __u8 bLength; 358 __u8 bDescriptorType; 359 __u8 bDescriptorSubType; 360 __u8 bNumFormats; 361 __le16 wTotalLength; 362 __u8 bEndpointAddress; 363 __u8 bmInfo; 364 __u8 bTerminalLink; 365 __u8 bStillCaptureMethod; 366 __u8 bTriggerSupport; 367 __u8 bTriggerUsage; 368 __u8 bControlSize; 369 __u8 bmaControls[]; 370 } __attribute__((__packed__)); 371 372 #define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p)) 373 374 #define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ 375 uvc_input_header_descriptor_##n_##p 376 377 #define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ 378 struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \ 379 __u8 bLength; \ 380 __u8 bDescriptorType; \ 381 __u8 bDescriptorSubType; \ 382 __u8 bNumFormats; \ 383 __le16 wTotalLength; \ 384 __u8 bEndpointAddress; \ 385 __u8 bmInfo; \ 386 __u8 bTerminalLink; \ 387 __u8 bStillCaptureMethod; \ 388 __u8 bTriggerSupport; \ 389 __u8 bTriggerUsage; \ 390 __u8 bControlSize; \ 391 __u8 bmaControls[p][n]; \ 392 } __attribute__ ((packed)) 393 394 /* 3.9.2.2. Output Header Descriptor */ 395 struct uvc_output_header_descriptor { 396 __u8 bLength; 397 __u8 bDescriptorType; 398 __u8 bDescriptorSubType; 399 __u8 bNumFormats; 400 __le16 wTotalLength; 401 __u8 bEndpointAddress; 402 __u8 bTerminalLink; 403 __u8 bControlSize; 404 __u8 bmaControls[]; 405 } __attribute__((__packed__)); 406 407 #define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p)) 408 409 #define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ 410 uvc_output_header_descriptor_##n_##p 411 412 #define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ 413 struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \ 414 __u8 bLength; \ 415 __u8 bDescriptorType; \ 416 __u8 bDescriptorSubType; \ 417 __u8 bNumFormats; \ 418 __le16 wTotalLength; \ 419 __u8 bEndpointAddress; \ 420 __u8 bTerminalLink; \ 421 __u8 bControlSize; \ 422 __u8 bmaControls[p][n]; \ 423 } __attribute__ ((packed)) 424 425 /* 3.9.2.6. Color matching descriptor */ 426 struct uvc_color_matching_descriptor { 427 __u8 bLength; 428 __u8 bDescriptorType; 429 __u8 bDescriptorSubType; 430 __u8 bColorPrimaries; 431 __u8 bTransferCharacteristics; 432 __u8 bMatrixCoefficients; 433 } __attribute__((__packed__)); 434 435 #define UVC_DT_COLOR_MATCHING_SIZE 6 436 437 /* 4.3.1.1. Video Probe and Commit Controls */ 438 struct uvc_streaming_control { 439 __u16 bmHint; 440 __u8 bFormatIndex; 441 __u8 bFrameIndex; 442 __u32 dwFrameInterval; 443 __u16 wKeyFrameRate; 444 __u16 wPFrameRate; 445 __u16 wCompQuality; 446 __u16 wCompWindowSize; 447 __u16 wDelay; 448 __u32 dwMaxVideoFrameSize; 449 __u32 dwMaxPayloadTransferSize; 450 __u32 dwClockFrequency; 451 __u8 bmFramingInfo; 452 __u8 bPreferedVersion; 453 __u8 bMinVersion; 454 __u8 bMaxVersion; 455 } __attribute__((__packed__)); 456 457 /* Uncompressed Payload - 3.1.1. Uncompressed Video Format Descriptor */ 458 struct uvc_format_uncompressed { 459 __u8 bLength; 460 __u8 bDescriptorType; 461 __u8 bDescriptorSubType; 462 __u8 bFormatIndex; 463 __u8 bNumFrameDescriptors; 464 __u8 guidFormat[16]; 465 __u8 bBitsPerPixel; 466 __u8 bDefaultFrameIndex; 467 __u8 bAspectRatioX; 468 __u8 bAspectRatioY; 469 __u8 bmInterlaceFlags; 470 __u8 bCopyProtect; 471 } __attribute__((__packed__)); 472 473 #define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27 474 475 /* Uncompressed Payload - 3.1.2. Uncompressed Video Frame Descriptor */ 476 struct uvc_frame_uncompressed { 477 __u8 bLength; 478 __u8 bDescriptorType; 479 __u8 bDescriptorSubType; 480 __u8 bFrameIndex; 481 __u8 bmCapabilities; 482 __le16 wWidth; 483 __le16 wHeight; 484 __le32 dwMinBitRate; 485 __le32 dwMaxBitRate; 486 __le32 dwMaxVideoFrameBufferSize; 487 __le32 dwDefaultFrameInterval; 488 __u8 bFrameIntervalType; 489 __le32 dwFrameInterval[]; 490 } __attribute__((__packed__)); 491 492 #define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n)) 493 494 #define UVC_FRAME_UNCOMPRESSED(n) \ 495 uvc_frame_uncompressed_##n 496 497 #define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \ 498 struct UVC_FRAME_UNCOMPRESSED(n) { \ 499 __u8 bLength; \ 500 __u8 bDescriptorType; \ 501 __u8 bDescriptorSubType; \ 502 __u8 bFrameIndex; \ 503 __u8 bmCapabilities; \ 504 __le16 wWidth; \ 505 __le16 wHeight; \ 506 __le32 dwMinBitRate; \ 507 __le32 dwMaxBitRate; \ 508 __le32 dwMaxVideoFrameBufferSize; \ 509 __le32 dwDefaultFrameInterval; \ 510 __u8 bFrameIntervalType; \ 511 __le32 dwFrameInterval[n]; \ 512 } __attribute__ ((packed)) 513 514 /* MJPEG Payload - 3.1.1. MJPEG Video Format Descriptor */ 515 struct uvc_format_mjpeg { 516 __u8 bLength; 517 __u8 bDescriptorType; 518 __u8 bDescriptorSubType; 519 __u8 bFormatIndex; 520 __u8 bNumFrameDescriptors; 521 __u8 bmFlags; 522 __u8 bDefaultFrameIndex; 523 __u8 bAspectRatioX; 524 __u8 bAspectRatioY; 525 __u8 bmInterlaceFlags; 526 __u8 bCopyProtect; 527 } __attribute__((__packed__)); 528 529 #define UVC_DT_FORMAT_MJPEG_SIZE 11 530 531 /* MJPEG Payload - 3.1.2. MJPEG Video Frame Descriptor */ 532 struct uvc_frame_mjpeg { 533 __u8 bLength; 534 __u8 bDescriptorType; 535 __u8 bDescriptorSubType; 536 __u8 bFrameIndex; 537 __u8 bmCapabilities; 538 __le16 wWidth; 539 __le16 wHeight; 540 __le32 dwMinBitRate; 541 __le32 dwMaxBitRate; 542 __le32 dwMaxVideoFrameBufferSize; 543 __le32 dwDefaultFrameInterval; 544 __u8 bFrameIntervalType; 545 __le32 dwFrameInterval[]; 546 } __attribute__((__packed__)); 547 548 #define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n)) 549 550 #define UVC_FRAME_MJPEG(n) \ 551 uvc_frame_mjpeg_##n 552 553 #define DECLARE_UVC_FRAME_MJPEG(n) \ 554 struct UVC_FRAME_MJPEG(n) { \ 555 __u8 bLength; \ 556 __u8 bDescriptorType; \ 557 __u8 bDescriptorSubType; \ 558 __u8 bFrameIndex; \ 559 __u8 bmCapabilities; \ 560 __le16 wWidth; \ 561 __le16 wHeight; \ 562 __le32 dwMinBitRate; \ 563 __le32 dwMaxBitRate; \ 564 __le32 dwMaxVideoFrameBufferSize; \ 565 __le32 dwDefaultFrameInterval; \ 566 __u8 bFrameIntervalType; \ 567 __le32 dwFrameInterval[n]; \ 568 } __attribute__ ((packed)) 569 570 #endif /* __LINUX_USB_VIDEO_H */ 571 572