1 /* 2 * USB Video Class definitions. 3 * 4 * Copyright (C) 2009 Laurent Pinchart <laurent.pinchart (at) 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 */ 568 569
