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