377 lines
9.5 KiB
C
377 lines
9.5 KiB
C
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/*
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* f_uvc.h -- USB Video Class Gadget driver
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*
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* Copyright (C) 2009-2010
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* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#ifndef _F_UVC_H_
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#define _F_UVC_H_
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#include <linux/usb/composite.h>
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#define USB_CLASS_VIDEO_CONTROL 1
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#define USB_CLASS_VIDEO_STREAMING 2
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struct uvc_descriptor_header {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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} __attribute__ ((packed));
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struct uvc_header_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u16 bcdUVC;
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__u16 wTotalLength;
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__u32 dwClockFrequency;
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__u8 bInCollection;
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__u8 baInterfaceNr[];
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} __attribute__((__packed__));
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#define UVC_HEADER_DESCRIPTOR(n) uvc_header_descriptor_##n
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#define DECLARE_UVC_HEADER_DESCRIPTOR(n) \
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struct UVC_HEADER_DESCRIPTOR(n) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u16 bcdUVC; \
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__u16 wTotalLength; \
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__u32 dwClockFrequency; \
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__u8 bInCollection; \
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__u8 baInterfaceNr[n]; \
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} __attribute__ ((packed))
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struct uvc_input_terminal_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bTerminalID;
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__u16 wTerminalType;
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__u8 bAssocTerminal;
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__u8 iTerminal;
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} __attribute__((__packed__));
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struct uvc_output_terminal_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bTerminalID;
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__u16 wTerminalType;
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__u8 bAssocTerminal;
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__u8 bSourceID;
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__u8 iTerminal;
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} __attribute__((__packed__));
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struct uvc_camera_terminal_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bTerminalID;
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__u16 wTerminalType;
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__u8 bAssocTerminal;
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__u8 iTerminal;
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__u16 wObjectiveFocalLengthMin;
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__u16 wObjectiveFocalLengthMax;
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__u16 wOcularFocalLength;
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__u8 bControlSize;
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__u8 bmControls[3];
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} __attribute__((__packed__));
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struct uvc_selector_unit_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bUnitID;
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__u8 bNrInPins;
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__u8 baSourceID[0];
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__u8 iSelector;
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} __attribute__((__packed__));
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#define UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
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uvc_selector_unit_descriptor_##n
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#define DECLARE_UVC_SELECTOR_UNIT_DESCRIPTOR(n) \
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struct UVC_SELECTOR_UNIT_DESCRIPTOR(n) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bUnitID; \
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__u8 bNrInPins; \
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__u8 baSourceID[n]; \
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__u8 iSelector; \
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} __attribute__ ((packed))
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struct uvc_processing_unit_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bUnitID;
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__u8 bSourceID;
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__u16 wMaxMultiplier;
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__u8 bControlSize;
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__u8 bmControls[2];
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__u8 iProcessing;
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} __attribute__((__packed__));
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struct uvc_extension_unit_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bUnitID;
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__u8 guidExtensionCode[16];
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__u8 bNumControls;
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__u8 bNrInPins;
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__u8 baSourceID[0];
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__u8 bControlSize;
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__u8 bmControls[0];
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__u8 iExtension;
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} __attribute__((__packed__));
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#define UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
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uvc_extension_unit_descriptor_##p_##n
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#define DECLARE_UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) \
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struct UVC_EXTENSION_UNIT_DESCRIPTOR(p, n) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bUnitID; \
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__u8 guidExtensionCode[16]; \
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__u8 bNumControls; \
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__u8 bNrInPins; \
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__u8 baSourceID[p]; \
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__u8 bControlSize; \
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__u8 bmControls[n]; \
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__u8 iExtension; \
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} __attribute__ ((packed))
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struct uvc_control_endpoint_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u16 wMaxTransferSize;
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} __attribute__((__packed__));
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#define UVC_DT_HEADER 1
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#define UVC_DT_INPUT_TERMINAL 2
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#define UVC_DT_OUTPUT_TERMINAL 3
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#define UVC_DT_SELECTOR_UNIT 4
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#define UVC_DT_PROCESSING_UNIT 5
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#define UVC_DT_EXTENSION_UNIT 6
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#define UVC_DT_HEADER_SIZE(n) (12+(n))
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#define UVC_DT_INPUT_TERMINAL_SIZE 8
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#define UVC_DT_OUTPUT_TERMINAL_SIZE 9
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#define UVC_DT_CAMERA_TERMINAL_SIZE(n) (15+(n))
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#define UVC_DT_SELECTOR_UNIT_SIZE(n) (6+(n))
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#define UVC_DT_PROCESSING_UNIT_SIZE(n) (9+(n))
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#define UVC_DT_EXTENSION_UNIT_SIZE(p,n) (24+(p)+(n))
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#define UVC_DT_CONTROL_ENDPOINT_SIZE 5
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struct uvc_input_header_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bNumFormats;
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__u16 wTotalLength;
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__u8 bEndpointAddress;
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__u8 bmInfo;
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__u8 bTerminalLink;
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__u8 bStillCaptureMethod;
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__u8 bTriggerSupport;
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__u8 bTriggerUsage;
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__u8 bControlSize;
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__u8 bmaControls[];
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} __attribute__((__packed__));
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#define UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
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uvc_input_header_descriptor_##n_##p
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#define DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(n, p) \
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struct UVC_INPUT_HEADER_DESCRIPTOR(n, p) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bNumFormats; \
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__u16 wTotalLength; \
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__u8 bEndpointAddress; \
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__u8 bmInfo; \
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__u8 bTerminalLink; \
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__u8 bStillCaptureMethod; \
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__u8 bTriggerSupport; \
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__u8 bTriggerUsage; \
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__u8 bControlSize; \
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__u8 bmaControls[p][n]; \
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} __attribute__ ((packed))
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struct uvc_output_header_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bNumFormats;
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__u16 wTotalLength;
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__u8 bEndpointAddress;
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__u8 bTerminalLink;
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__u8 bControlSize;
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__u8 bmaControls[];
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} __attribute__((__packed__));
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#define UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
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uvc_output_header_descriptor_##n_##p
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#define DECLARE_UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) \
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struct UVC_OUTPUT_HEADER_DESCRIPTOR(n, p) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bNumFormats; \
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__u16 wTotalLength; \
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__u8 bEndpointAddress; \
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__u8 bTerminalLink; \
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__u8 bControlSize; \
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__u8 bmaControls[p][n]; \
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} __attribute__ ((packed))
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struct uvc_format_uncompressed {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bFormatIndex;
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__u8 bNumFrameDescriptors;
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__u8 guidFormat[16];
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__u8 bBitsPerPixel;
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__u8 bDefaultFrameIndex;
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__u8 bAspectRatioX;
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__u8 bAspectRatioY;
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__u8 bmInterfaceFlags;
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__u8 bCopyProtect;
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} __attribute__((__packed__));
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struct uvc_frame_uncompressed {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bFrameIndex;
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__u8 bmCapabilities;
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__u16 wWidth;
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__u16 wHeight;
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__u32 dwMinBitRate;
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__u32 dwMaxBitRate;
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__u32 dwMaxVideoFrameBufferSize;
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__u32 dwDefaultFrameInterval;
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__u8 bFrameIntervalType;
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__u32 dwFrameInterval[];
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} __attribute__((__packed__));
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#define UVC_FRAME_UNCOMPRESSED(n) \
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uvc_frame_uncompressed_##n
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#define DECLARE_UVC_FRAME_UNCOMPRESSED(n) \
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struct UVC_FRAME_UNCOMPRESSED(n) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bFrameIndex; \
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__u8 bmCapabilities; \
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__u16 wWidth; \
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__u16 wHeight; \
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__u32 dwMinBitRate; \
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__u32 dwMaxBitRate; \
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__u32 dwMaxVideoFrameBufferSize; \
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__u32 dwDefaultFrameInterval; \
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__u8 bFrameIntervalType; \
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__u32 dwFrameInterval[n]; \
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} __attribute__ ((packed))
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struct uvc_format_mjpeg {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bFormatIndex;
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__u8 bNumFrameDescriptors;
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__u8 bmFlags;
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__u8 bDefaultFrameIndex;
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__u8 bAspectRatioX;
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__u8 bAspectRatioY;
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__u8 bmInterfaceFlags;
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__u8 bCopyProtect;
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} __attribute__((__packed__));
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struct uvc_frame_mjpeg {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bFrameIndex;
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__u8 bmCapabilities;
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__u16 wWidth;
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__u16 wHeight;
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__u32 dwMinBitRate;
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__u32 dwMaxBitRate;
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__u32 dwMaxVideoFrameBufferSize;
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__u32 dwDefaultFrameInterval;
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__u8 bFrameIntervalType;
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__u32 dwFrameInterval[];
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} __attribute__((__packed__));
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#define UVC_FRAME_MJPEG(n) \
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uvc_frame_mjpeg_##n
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#define DECLARE_UVC_FRAME_MJPEG(n) \
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struct UVC_FRAME_MJPEG(n) { \
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__u8 bLength; \
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__u8 bDescriptorType; \
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__u8 bDescriptorSubType; \
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__u8 bFrameIndex; \
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__u8 bmCapabilities; \
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__u16 wWidth; \
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__u16 wHeight; \
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__u32 dwMinBitRate; \
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__u32 dwMaxBitRate; \
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__u32 dwMaxVideoFrameBufferSize; \
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__u32 dwDefaultFrameInterval; \
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__u8 bFrameIntervalType; \
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__u32 dwFrameInterval[n]; \
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} __attribute__ ((packed))
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struct uvc_color_matching_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubType;
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__u8 bColorPrimaries;
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__u8 bTransferCharacteristics;
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__u8 bMatrixCoefficients;
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} __attribute__((__packed__));
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#define UVC_DT_INPUT_HEADER 1
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#define UVC_DT_OUTPUT_HEADER 2
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#define UVC_DT_FORMAT_UNCOMPRESSED 4
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#define UVC_DT_FRAME_UNCOMPRESSED 5
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#define UVC_DT_FORMAT_MJPEG 6
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#define UVC_DT_FRAME_MJPEG 7
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#define UVC_DT_COLOR_MATCHING 13
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#define UVC_DT_INPUT_HEADER_SIZE(n, p) (13+(n*p))
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#define UVC_DT_OUTPUT_HEADER_SIZE(n, p) (9+(n*p))
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#define UVC_DT_FORMAT_UNCOMPRESSED_SIZE 27
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#define UVC_DT_FRAME_UNCOMPRESSED_SIZE(n) (26+4*(n))
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#define UVC_DT_FORMAT_MJPEG_SIZE 11
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#define UVC_DT_FRAME_MJPEG_SIZE(n) (26+4*(n))
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#define UVC_DT_COLOR_MATCHING_SIZE 6
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extern int uvc_bind_config(struct usb_configuration *c,
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const struct uvc_descriptor_header * const *control,
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const struct uvc_descriptor_header * const *fs_streaming,
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const struct uvc_descriptor_header * const *hs_streaming);
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#endif /* _F_UVC_H_ */
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