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 __u16 bcdUVC; 199 __u16 wTotalLength; 200 __u32 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 __u16 bcdUVC; \ 216 __u16 wTotalLength; \ 217 __u32 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 __u16 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 __u16 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 __u16 wTerminalType; 256 __u8 bAssocTerminal; 257 __u8 iTerminal; 258 __u16 wObjectiveFocalLengthMin; 259 __u16 wObjectiveFocalLengthMax; 260 __u16 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 __u16 wMaxMultiplier; 302 __u8 bControlSize; 303 __u8 bmControls[2]; 304 __u8 iProcessing; 305 } __attribute__((__packed__)); 306 307 #define UVC_DT_PROCESSING_UNIT_SIZE(n) (9+(n)) 308 309 /* 3.7.2.6. Extension Unit Descriptor */ 310 struct uvc_extension_unit_descriptor { 311 __u8 bLength; 312 __u8 bDescriptorType; 313 __u8 bDescriptorSubType; 314 __u8 bUnitID; 315 __u8 guidExtensionCode[16]; 316 __u8 bNumControls; 317 __u8 bNrInPins; 318 __u8 baSourceID[0]; 319 __u8 bControlSize; 320 __u8 bmControls[0]; 321 __u8 iExtension; 322 } __attribute__((__packed__)); 323 324 #define UVC_DT_EXTENSION_UNIT_SIZE(p, n) (24+(p)+(n)) 325 326 #define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ 327 uvc_extension_unit_descriptor_##p_##n 328 329 #define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \ 330 struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \ 331 __u8 bLength; \ 332 __u8 bDescriptorType; \ 333 __u8 bDescriptorSubType; \ 334 __u8 bUnitID; \ 335 __u8 guidExtensionCode[16]; \ 336 __u8 bNumControls; \ 337 __u8 bNrInPins; \ 338 __u8 baSourceID[p]; \ 339 __u8 bControlSize; \ 340 __u8 bmControls[n]; \ 341 __u8 iExtension; \ 342 } __attribute__ ((packed)) 343 344 /* 3.8.2.2. Video Control Interrupt Endpoint Descriptor */ 345 struct uvc_control_endpoint_descriptor { 346 __u8 bLength; 347 __u8 bDescriptorType; 348 __u8 bDescriptorSubType; 349 __u16 wMaxTransferSize; 350 } __attribute__((__packed__)); 351 352 #define UVC_DT_CONTROL_ENDPOINT_SIZE 5 353 354 /* 3.9.2.1. Input Header Descriptor */ 355 struct uvc_input_header_descriptor { 356 __u8 bLength; 357 __u8 bDescriptorType; 358 __u8 bDescriptorSubType; 359 __u8 bNumFormats; 360 __u16 wTotalLength; 361 __u8 bEndpointAddress; 362 __u8 bmInfo; 363 __u8 bTerminalLink; 364 __u8 bStillCaptureMethod; 365 __u8 bTriggerSupport; 366 __u8 bTriggerUsage; 367 __u8 bControlSize; 368 __u8 bmaControls[]; 369 } __attribute__((__packed__)); 370 371 #define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p)) 372 373 #define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ 374 uvc_input_header_descriptor_##n_##p 375 376 #define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \ 377 struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \ 378 __u8 bLength; \ 379 __u8 bDescriptorType; \ 380 __u8 bDescriptorSubType; \ 381 __u8 bNumFormats; \ 382 __u16 wTotalLength; \ 383 __u8 bEndpointAddress; \ 384 __u8 bmInfo; \ 385 __u8 bTerminalLink; \ 386 __u8 bStillCaptureMethod; \ 387 __u8 bTriggerSupport; \ 388 __u8 bTriggerUsage; \ 389 __u8 bControlSize; \ 390 __u8 bmaControls[p][n]; \ 391 } __attribute__ ((packed)) 392 393 /* 3.9.2.2. Output Header Descriptor */ 394 struct uvc_output_header_descriptor { 395 __u8 bLength; 396 __u8 bDescriptorType; 397 __u8 bDescriptorSubType; 398 __u8 bNumFormats; 399 __u16 wTotalLength; 400 __u8 bEndpointAddress; 401 __u8 bTerminalLink; 402 __u8 bControlSize; 403 __u8 bmaControls[]; 404 } __attribute__((__packed__)); 405 406 #define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p)) 407 408 #define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ 409 uvc_output_header_descriptor_##n_##p 410 411 #define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \ 412 struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \ 413 __u8 bLength; \ 414 __u8 bDescriptorType; \ 415 __u8 bDescriptorSubType; \ 416 __u8 bNumFormats; \ 417 __u16 wTotalLength; \ 418 __u8 bEndpointAddress; \ 419 __u8 bTerminalLink; \ 420 __u8 bControlSize; \ 421 __u8 bmaControls[p][n]; \ 422 } __attribute__ ((packed)) 423 424 /* 3.9.2.6. Color matching descriptor */ 425 struct uvc_color_matching_descriptor { 426 __u8 bLength; 427 __u8 bDescriptorType; 428 __u8 bDescriptorSubType; 429 __u8 bColorPrimaries; 430 __u8 bTransferCharacteristics; 431 __u8 bMatrixCoefficients; 432 } __attribute__((__packed__)); 433 434 #define UVC_DT_COLOR_MATCHING_SIZE 6 435 436 /* 4.3.1.1. Video Probe and Commit Controls */ 437 struct uvc_streaming_control { 438 __u16 bmHint; 439 __u8 bFormatIndex; 440 __u8 bFrameIndex; 441 __u32 dwFrameInterval; 442 __u16 wKeyFrameRate; 443 __u16 wPFrameRate; 444 __u16 wCompQuality; 445 __u16 wCompWindowSize; 446 __u16 wDelay; 447 __u32 dwMaxVideoFrameSize; 448 __u32 dwMaxPayloadTransferSize; 449 __u32 dwClockFrequency; 450 __u8 bmFramingInfo; 451 __u8 bPreferedVersion; 452 __u8 bMinVersion; 453 __u8 bMaxVersion; 454 } __attribute__((__packed__)); 455 456 /* Uncompressed Payload - 3.1.1. Uncompressed Video Format Descriptor */ 457 struct uvc_format_uncompressed { 458 __u8 bLength; 459 __u8 bDescriptorType; 460 __u8 bDescriptorSubType; 461 __u8 bFormatIndex; 462 __u8 bNumFrameDescriptors; 463 __u8 guidFormat[16]; 464 __u8 bBitsPerPixel; 465 __u8 bDefaultFrameIndex; 466 __u8 bAspectRatioX; 467 __u8 bAspectRatioY; 468 __u8 bmInterfaceFlags; 469 __u8 bCopyProtect; 470 } __attribute__((__packed__)); 471 472 #define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27 473 474 /* Uncompressed Payload - 3.1.2. Uncompressed Video Frame Descriptor */ 475 struct uvc_frame_uncompressed { 476 __u8 bLength; 477 __u8 bDescriptorType; 478 __u8 bDescriptorSubType; 479 __u8 bFrameIndex; 480 __u8 bmCapabilities; 481 __u16 wWidth; 482 __u16 wHeight; 483 __u32 dwMinBitRate; 484 __u32 dwMaxBitRate; 485 __u32 dwMaxVideoFrameBufferSize; 486 __u32 dwDefaultFrameInterval; 487 __u8 bFrameIntervalType; 488 __u32 dwFrameInterval[]; 489 } __attribute__((__packed__)); 490 491 #define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n)) 492 493 #define UVC_FRAME_UNCOMPRESSED(n) \ 494 uvc_frame_uncompressed_##n 495 496 #define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \ 497 struct UVC_FRAME_UNCOMPRESSED(n) { \ 498 __u8 bLength; \ 499 __u8 bDescriptorType; \ 500 __u8 bDescriptorSubType; \ 501 __u8 bFrameIndex; \ 502 __u8 bmCapabilities; \ 503 __u16 wWidth; \ 504 __u16 wHeight; \ 505 __u32 dwMinBitRate; \ 506 __u32 dwMaxBitRate; \ 507 __u32 dwMaxVideoFrameBufferSize; \ 508 __u32 dwDefaultFrameInterval; \ 509 __u8 bFrameIntervalType; \ 510 __u32 dwFrameInterval[n]; \ 511 } __attribute__ ((packed)) 512 513 /* MJPEG Payload - 3.1.1. MJPEG Video Format Descriptor */ 514 struct uvc_format_mjpeg { 515 __u8 bLength; 516 __u8 bDescriptorType; 517 __u8 bDescriptorSubType; 518 __u8 bFormatIndex; 519 __u8 bNumFrameDescriptors; 520 __u8 bmFlags; 521 __u8 bDefaultFrameIndex; 522 __u8 bAspectRatioX; 523 __u8 bAspectRatioY; 524 __u8 bmInterfaceFlags; 525 __u8 bCopyProtect; 526 } __attribute__((__packed__)); 527 528 #define UVC_DT_FORMAT_MJPEG_SIZE 11 529 530 /* MJPEG Payload - 3.1.2. MJPEG Video Frame Descriptor */ 531 struct uvc_frame_mjpeg { 532 __u8 bLength; 533 __u8 bDescriptorType; 534 __u8 bDescriptorSubType; 535 __u8 bFrameIndex; 536 __u8 bmCapabilities; 537 __u16 wWidth; 538 __u16 wHeight; 539 __u32 dwMinBitRate; 540 __u32 dwMaxBitRate; 541 __u32 dwMaxVideoFrameBufferSize; 542 __u32 dwDefaultFrameInterval; 543 __u8 bFrameIntervalType; 544 __u32 dwFrameInterval[]; 545 } __attribute__((__packed__)); 546 547 #define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n)) 548 549 #define UVC_FRAME_MJPEG(n) \ 550 uvc_frame_mjpeg_##n 551 552 #define DECLARE_UVC_FRAME_MJPEG(n) \ 553 struct UVC_FRAME_MJPEG(n) { \ 554 __u8 bLength; \ 555 __u8 bDescriptorType; \ 556 __u8 bDescriptorSubType; \ 557 __u8 bFrameIndex; \ 558 __u8 bmCapabilities; \ 559 __u16 wWidth; \ 560 __u16 wHeight; \ 561 __u32 dwMinBitRate; \ 562 __u32 dwMaxBitRate; \ 563 __u32 dwMaxVideoFrameBufferSize; \ 564 __u32 dwDefaultFrameInterval; \ 565 __u8 bFrameIntervalType; \ 566 __u32 dwFrameInterval[n]; \ 567 } __attribute__ ((packed)) 568 569 #endif /* __LINUX_USB_VIDEO_H */ 570 571
