Dr Andrew Scott
G7VAV
Senior Lecturer
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
School of Computing
and Communications
D35 InfoLab21
Lancaster University
Lancaster, LA1 4WA
United Kingdom
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video.h
001: /* 002: * USB Video Class definitions. 003: * 004: * Copyright (C) 2009 Laurent Pinchart <laurent.pinchart@skynet.be> 005: * 006: * This file holds USB constants and structures defined by the USB Device 007: * Class Definition for Video Devices. Unless otherwise stated, comments 008: * below reference relevant sections of the USB Video Class 1.1 specification 009: * available at 010: * 011: * http://www.usb.org/developers/devclass_docs/USB_Video_Class_1_1.zip 012: */ 013: 014: #ifndef __LINUX_USB_VIDEO_H 015: #define __LINUX_USB_VIDEO_H 016: 017: #include <linux/types.h> 018: 019: /* -------------------------------------------------------------------------- 020: * UVC constants 021: */ 022: 023: /* A.2. Video Interface Subclass Codes */ 024: #define UVC_SC_UNDEFINED 0x00 025: #define UVC_SC_VIDEOCONTROL 0x01 026: #define UVC_SC_VIDEOSTREAMING 0x02 027: #define UVC_SC_VIDEO_INTERFACE_COLLECTION 0x03 028: 029: /* A.3. Video Interface Protocol Codes */ 030: #define UVC_PC_PROTOCOL_UNDEFINED 0x00 031: 032: /* A.5. Video Class-Specific VC Interface Descriptor Subtypes */ 033: #define UVC_VC_DESCRIPTOR_UNDEFINED 0x00 034: #define UVC_VC_HEADER 0x01 035: #define UVC_VC_INPUT_TERMINAL 0x02 036: #define UVC_VC_OUTPUT_TERMINAL 0x03 037: #define UVC_VC_SELECTOR_UNIT 0x04 038: #define UVC_VC_PROCESSING_UNIT 0x05 039: #define UVC_VC_EXTENSION_UNIT 0x06 040: 041: /* A.6. Video Class-Specific VS Interface Descriptor Subtypes */ 042: #define UVC_VS_UNDEFINED 0x00 043: #define UVC_VS_INPUT_HEADER 0x01 044: #define UVC_VS_OUTPUT_HEADER 0x02 045: #define UVC_VS_STILL_IMAGE_FRAME 0x03 046: #define UVC_VS_FORMAT_UNCOMPRESSED 0x04 047: #define UVC_VS_FRAME_UNCOMPRESSED 0x05 048: #define UVC_VS_FORMAT_MJPEG 0x06 049: #define UVC_VS_FRAME_MJPEG 0x07 050: #define UVC_VS_FORMAT_MPEG2TS 0x0a 051: #define UVC_VS_FORMAT_DV 0x0c 052: #define UVC_VS_COLORFORMAT 0x0d 053: #define UVC_VS_FORMAT_FRAME_BASED 0x10 054: #define UVC_VS_FRAME_FRAME_BASED 0x11 055: #define UVC_VS_FORMAT_STREAM_BASED 0x12 056: 057: /* A.7. Video Class-Specific Endpoint Descriptor Subtypes */ 058: #define UVC_EP_UNDEFINED 0x00 059: #define UVC_EP_GENERAL 0x01 060: #define UVC_EP_ENDPOINT 0x02 061: #define UVC_EP_INTERRUPT 0x03 062: 063: /* A.8. Video Class-Specific Request Codes */ 064: #define UVC_RC_UNDEFINED 0x00 065: #define UVC_SET_CUR 0x01 066: #define UVC_GET_CUR 0x81 067: #define UVC_GET_MIN 0x82 068: #define UVC_GET_MAX 0x83 069: #define UVC_GET_RES 0x84 070: #define UVC_GET_LEN 0x85 071: #define UVC_GET_INFO 0x86 072: #define UVC_GET_DEF 0x87 073: 074: /* A.9.1. VideoControl Interface Control Selectors */ 075: #define UVC_VC_CONTROL_UNDEFINED 0x00 076: #define UVC_VC_VIDEO_POWER_MODE_CONTROL 0x01 077: #define UVC_VC_REQUEST_ERROR_CODE_CONTROL 0x02 078: 079: /* A.9.2. Terminal Control Selectors */ 080: #define UVC_TE_CONTROL_UNDEFINED 0x00 081: 082: /* A.9.3. Selector Unit Control Selectors */ 083: #define UVC_SU_CONTROL_UNDEFINED 0x00 084: #define UVC_SU_INPUT_SELECT_CONTROL 0x01 085: 086: /* A.9.4. Camera Terminal Control Selectors */ 087: #define UVC_CT_CONTROL_UNDEFINED 0x00 088: #define UVC_CT_SCANNING_MODE_CONTROL 0x01 089: #define UVC_CT_AE_MODE_CONTROL 0x02 090: #define UVC_CT_AE_PRIORITY_CONTROL 0x03 091: #define UVC_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL 0x04 092: #define UVC_CT_EXPOSURE_TIME_RELATIVE_CONTROL 0x05 093: #define UVC_CT_FOCUS_ABSOLUTE_CONTROL 0x06 094: #define UVC_CT_FOCUS_RELATIVE_CONTROL 0x07 095: #define UVC_CT_FOCUS_AUTO_CONTROL 0x08 096: #define UVC_CT_IRIS_ABSOLUTE_CONTROL 0x09 097: #define UVC_CT_IRIS_RELATIVE_CONTROL 0x0a 098: #define UVC_CT_ZOOM_ABSOLUTE_CONTROL 0x0b 099: #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:
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