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Linux平台。一个好用的ptp传输工具。用来从相机向pc传输照片

	 kind of automatic mechanism.
	 One-push Automatic means that the user must press the capture
	 button while pointing objective at a white field, at which time the
	 device determines the white balance setting.
	 Daylight means that the device sets the white balance to a value
	 that is suitable for daylight use.
	 Tungsten means that the device sets the white balance to a value
	 that is suitable for use with a tungsten light source.
	 Flash means that the white balance is set to a value that is
	 suitable for flash conditions.

0x5006 : RGB Gain
	 DataType: String
	 Forms: Enum, Range
	 This property takes the form of a string that is parsed as follows:
	 "R:G:B" where the R represents the red gain, the G represents the
	 green gain, and the B represents the blue gain. For example, for
	 an RGB ratio of red=2, green=3 and blue=4, the RGB string could be
	 "2:3:4" or "200:300:400". Each part of the RGB string is in decimal
	 form of UINT16 integer.

0x5007 : F-Number
	 DataType: UINT16
	 Forms: Enum
	 This property represents the aperture of the lens. The units are
	 equal to the F-Number scaled by 100.
	 Example values are: 280 (2.8), 560 (5.6), 800 (8), etc.

0x5008 : Focal Length
	 DataType: UINT32
	 Forms: Enum, Range
	 This property represents the 35mm equivalent focal length. The
	 units are equal to focal length in millimeters multiplied by 100.

0x5009 : Focus Distance
	 DataType: UINT16
	 Forms: Enum, Range
	 Value of this property represents the focus distance in
	 millimeters. A value of 0xFFFF means infinity.

0x500a : Focus Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Manual
	 0x0002 - Automatic
	 0x0003 - Automatic Macro (close-up)
	 All other values with bit 15 set to zero are reserver.
	 All values with bit 15 set to 1 are vendor-defined.

0x500b : Exposure Metering Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Average
	 0x0002 - Center-weighted-average
	 0x0003 - Multi-spot
	 0x0004 - Center-spot
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x500c : Flash Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Auto flash
	 0x0002 - Flash off
	 0x0003 - Fill flash
	 0x0004 - Red eye auto
	 0x0005 - Red eye fill
	 0x0006 - External flash
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x500d : Exposure Time
	 DataType: UINT32
	 Forms: Enum, Range
	 This property represents the shutter speed. It has units of seconds
	 scaled by 10000.
	 For example:
	 40 means 1/250 sec.
	 80 means 1/125 sec.
	 160 means 1/62.5 sec. and so on.

0x500e : Exposure Program Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Manual
	 0x0002 - Automatic
	 0x0003 - Aperture Priority
	 0x0004 - Shutter Priority
	 0x0005 - Program Creative (greater depth of field)
	 0x0006 - Program Action (faster shutter speed)
	 0x0007 - Portrait
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x500f : Exposure Index (film speed ISO)
	 DataType: UINT16
	 Forms: Enum, Range
	 Value of this property represents the emulation of film speed
	 setting. The setting corresponds to the ISO designations. A value of
	 0xFFFF means automatic ISO setting.

0x5010 : Exposure Bias Compensation
	 DataType: INT16
	 Forms: Enum, Range
	 Value of this property represents the exposure compensation. The
	 units are in "stops" scaled by 1000. The setting values are in
	 APEX.
	 For example the value of -2000 (means 4X less energy on sensor)
	 two stops less exposure (darker image). The value of 1500 means
	 one and a half stops more exposure (2.25X more energy on sensors).

0x5011 : Date Time
	 DataType: String
	 Forms: none
	 Value of this property represents the device date and time in ISO
	 8601 format. It's a string of "YYYYMMDDThhmmss.s", where YYYY
	 represents the year, MM represents the month (01-12), DD is the day
	 of the month (01-31), T is a constant character, hh represents the
	 hour since midnight (00-23), mm is the minutes (00-59) past the
	 hour and ss.s is the seconds past the minute, with the ".s" being
	 optional tenth of second past the second. The string can be
	 optionally appended with Z to indicate UTC, or +/-hhmm to indicate
	 that time is relative to a time zone.
	 
0x5012 : Pre-Capture Delay
	 DataType: UINT32
	 Forms: Enum, Range
	 Value of this property represents the amount of time delay that
	 should be inserted between the capture trigger and the initiation
	 of the data capture. This value shall be interpreted as
	 milliseconds. 
	 It has nothing to do with the "0x5019 : Burst Interval" and the
	 "0x501b : Timelapse Interval"!

0x5013 : Still Capture Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Normal
	 0x0002 - Burst
	 0x0003 - Timelapse
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x5014 : Contrast
	 DataType: UINT8
	 Forms: Enum, Range
	 Value of this property represents the contrast of a captured image.
	 The minimum supported value is used to represent the least
	 contrast, while the maximum value represents the most contrast.

0x5015 : Sharpness
	 DataType: UINT8
	 Forms: Enum, Range
	 Value of this property represents the sharpness of a captured
	 image. The minimum value is used to represent the least amount of
	 sharpness, while the maximum value represents highest sharpness.

0x5016 : Digital Zoom
	 DataType: UINT8
	 Forms: Enum, Range
	 Value of this property represents the effective zoom ratio of
	 digital camera's acquired image scaled by a factor of 10.
	 No digital zoom (1) represents the value of 10. The minimum value
	 represents minimum digital zoom (no digital zoom), typically
	 10, while the maximum value represents the maximum digital zoom.

0x5017 : Effect Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Standard (color)
	 0x0002 - Black & White
	 0x0003 - Sepia
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x5018 : Burst Number
	 DataType: UINT16
	 Forms: Enum, Range
	 Value of this property specifies the number of images that the
	 device will attempt to capture upon initiation of a burst capture.

0x5019 : Burst Interval
	 Data Type: UINT16
	 Forms: Enum, Range
	 Value of this property represents the delay between captures upon
	 initialization of a burst captures. This value is expressed in
	 milliseconds.

0x501a : Timelapse Number
	 DataType: UINT16
	 Forms: Enum, Range
	 Value of this property represents the number of images that the
	 device will attempt to capture upon initiation of a time-lapse
	 capture.

0x501b : Timelapse Interval
	 DataType: UINT32
	 Forms: Enum, Range
	 Value of this property represents the delay between captures upon
	 initialization of a time-lapse capture. This value is expressed in
	 milliseconds

0x501c : Focus Metering Mode
	 DataType: UINT16
	 Forms: Enum
	 PTP standard specifies following values:
	 0x0000 - Undefined
	 0x0001 - Center-spot
	 0x0002 - Multi-spot
	 All other values with bit 15 set to zero are reserved.
	 All values with bit 15 set to 1 are vendor-defined.

0x501d : UploadURL
	 DataType: String
	 Forms: none
	 This property describes the URL that the receiver may use to upload
	 images.

0x501e : Artist
	 DataType: string
	 Forms: none
	 The name of the author of pictures.
	 This property is intended to populate the Artist field of an EXIF
	 images.

0x501f : Copyright
	 DataType: string
	 Forms: none
	 Copyright notification.
	 This property is intended to populate the Copyright field of an
	 EXIF images.


===================
* Camera abilities*
===================

A couple of random camera abilities:

0.048332 PTP/library.c(2): Device info:
0.048347 PTP/library.c(2): Manufacturer: Nikon Corporation
0.048359 PTP/library.c(2):   model: E2500
0.048370 PTP/library.c(2):   device version: E2500v1.0
0.048380 PTP/library.c(2): Vendor extension description: Nikon PTP Extensions
0.048391 PTP/library.c(2): Supported operations:
0.048402 PTP/library.c(2):   0x1001
0.048413 PTP/library.c(2):   0x1002
0.048424 PTP/library.c(2):   0x1003
0.048435 PTP/library.c(2):   0x1004
0.048446 PTP/library.c(2):   0x1005
0.048457 PTP/library.c(2):   0x1006
0.048468 PTP/library.c(2):   0x1007
0.048479 PTP/library.c(2):   0x1008
0.048490 PTP/library.c(2):   0x1009
0.048500 PTP/library.c(2):   0x100a
0.048511 PTP/library.c(2):   0x100b
0.048522 PTP/library.c(2):   0x101b


0.309772 PTP/library.c(2): Device info:
0.309976 PTP/library.c(2): Manufacturer: Canon Inc.
0.310211 PTP/library.c(2):   model: Canon DIGITAL IXUS 400
0.310427 PTP/library.c(2):   device version:
0.310634 PTP/library.c(2): Vendor extension description: (null)
0.310861 PTP/library.c(2): Supported operations:
0.311066 PTP/library.c(2):   0x1001
0.311260 PTP/library.c(2):   0x1002
0.311455 PTP/library.c(2):   0x1003
0.311650 PTP/library.c(2):   0x1004
0.311844 PTP/library.c(2):   0x1005
0.312039 PTP/library.c(2):   0x1006
0.312233 PTP/library.c(2):   0x1007
0.312476 PTP/library.c(2):   0x1008
0.312674 PTP/library.c(2):   0x1009
0.312869 PTP/library.c(2):   0x100a
0.313064 PTP/library.c(2):   0x100b
0.313259 PTP/library.c(2):   0x100c
0.313457 PTP/library.c(2):   0x100d
0.313651 PTP/library.c(2):   0x100e
0.313846 PTP/library.c(2):   0x100f
0.314039 PTP/library.c(2):   0x1012
0.314233 PTP/library.c(2):   0x1014
0.321675 PTP/library.c(2):   0x1015
0.322120 PTP/library.c(2):   0x1016
0.322321 PTP/library.c(2):   0x101b
0.322518 PTP/library.c(2):   0x9001
0.322713 PTP/library.c(2):   0x9002
0.322909 PTP/library.c(2):   0x9003
0.323103 PTP/library.c(2):   0x9006
0.323299 PTP/library.c(2):   0x9008
0.323493 PTP/library.c(2):   0x9009
0.323689 PTP/library.c(2):   0x900a
0.323883 PTP/library.c(2):   0x900b
0.324079 PTP/library.c(2):   0x900c
0.324273 PTP/library.c(2):   0x900d
0.324583 PTP/library.c(2):   0x900e
0.324789 PTP/library.c(2):   0x900f
0.324985 PTP/library.c(2):   0x9010
0.325181 PTP/library.c(2):   0x9011
0.325377 PTP/library.c(2):   0x9012
0.325573 PTP/library.c(2):   0x9013
0.325767 PTP/library.c(2):   0x9014
0.325966 PTP/library.c(2):   0x9015
0.326162 PTP/library.c(2):   0x9018
0.326357 PTP/library.c(2):   0x9019
0.326554 PTP/library.c(2):   0x901a
0.326750 PTP/library.c(2):   0x901b
0.326945 PTP/library.c(2):   0x901c
0.327142 PTP/library.c(2):   0x901d
0.327337 PTP/library.c(2):   0x901e
0.327533 PTP/library.c(2):   0x901f
0.327729 PTP/library.c(2):   0x9020
0.327925 PTP/library.c(2):   0x9021
0.555111 PTP2/library.c(2): Events Supported:
0.555118 PTP2/library.c(2):   0x4001
0.555125 PTP2/library.c(2):   0x4002
0.555132 PTP2/library.c(2):   0x4003
0.555138 PTP2/library.c(2):   0x4004
0.555145 PTP2/library.c(2):   0x4005
0.555152 PTP2/library.c(2):   0x4006
0.555159 PTP2/library.c(2):   0x4008
0.555165 PTP2/library.c(2):   0x400a
0.555172 PTP2/library.c(2):   0x400c
0.555179 PTP2/library.c(2):   0x400d
0.555185 PTP2/library.c(2):   0xc001
0.555192 PTP2/library.c(2):   0xc005
0.555199 PTP2/library.c(2):   0xc006
0.555206 PTP2/library.c(2):   0xc007
0.555212 PTP2/library.c(2):   0xc008
0.555219 PTP2/library.c(2):   0xc009
0.555226 PTP2/library.c(2):   0xc00a
0.555233 PTP2/library.c(2):   0xc00b
0.555239 PTP2/library.c(2):   0xc00c
0.555246 PTP2/library.c(2):   0xc00d
0.555253 PTP2/library.c(2): Device Properties Supported:
0.555260 PTP2/library.c(2):   0xd001
0.555267 PTP2/library.c(2):   0xd002
0.555273 PTP2/library.c(2):   0xd003
0.555280 PTP2/library.c(2):   0xd02c
0.555287 PTP2/library.c(2):   0xd02d
0.555294 PTP2/library.c(2):   0xd02e
0.555300 PTP2/library.c(2):   0xd02f
0.555307 PTP2/library.c(2):   0xd030
0.555314 PTP2/library.c(2):   0xd031
0.555320 PTP2/library.c(2):   0xd032
0.555327 PTP2/library.c(2):   0xd033
0.555334 PTP2/library.c(2):   0xd034
0.555341 PTP2/library.c(2):   0xd045
0.555347 PTP2/library.c(2):   0xd046
0.555354 PTP2/library.c(2):   0xd047
0.555361 PTP2/library.c(2):   0xd048
0.555368 PTP2/library.c(2):   0xd049

0.509050 PTP/library.c(2): Device info:
0.509067 PTP/library.c(2): Manufacturer: Canon Inc.
0.509072 PTP/library.c(2):   model: Canon DIGITAL IXUS II
0.509077 PTP/library.c(2):   device version: 
0.509082 PTP/library.c(2): Vendor extension description: (null)
0.509091 PTP/library.c(2): Supported operations:
0.509096 PTP/library.c(2):   0x1001
0.509101 PTP/library.c(2):   0x1002
0.509106 PTP/library.c(2):   0x1003
0.509110 PTP/library.c(2):   0x1004
0.509114 PTP/library.c(2):   0x1005
0.509119 PTP/library.c(2):   0x1006
0.509142 PTP/library.c(2):   0x1007
0.509147 PTP/library.c(2):   0x1008
0.509152 PTP/library.c(2):   0x1009
0.509156 PTP/library.c(2):   0x100a
0.509160 PTP/library.c(2):   0x100b
0.509165 PTP/library.c(2):   0x100c
0.509169 PTP/library.c(2):   0x100d
0.509173 PTP/library.c(2):   0x100e
0.509178 PTP/library.c(2):   0x100f
0.509182 PTP/library.c(2):   0x1012
0.509186 PTP/library.c(2):   0x1014
0.509191 PTP/library.c(2):   0x1015
0.509195 PTP/library.c(2):   0x1016
0.509199 PTP/library.c(2):   0x101b
0.509203 PTP/library.c(2):   0x9001
0.509208 PTP/library.c(2):   0x9002
0.509212 PTP/library.c(2):   0x9003
0.509216 PTP/library.c(2):   0x9006
0.509221 PTP/library.c(2):   0x9008
0.509225 PTP/library.c(2):   0x9009
0.509229 PTP/library.c(2):   0x900a
0.509234 PTP/library.c(2):   0x900b
0.509238 PTP/library.c(2):   0x900c
0.509242 PTP/library.c(2):   0x900d
0.509247 PTP/library.c(2):   0x900e
0.509251 PTP/library.c(2):   0x900f
0.509255 PTP/library.c(2):   0x9010
0.509259 PTP/library.c(2):   0x9011
0.509264 PTP/library.c(2):   0x9012
0.509268 PTP/library.c(2):   0x9013
0.509272 PTP/library.c(2):   0x9014
0.509277 PTP/library.c(2):   0x9015
0.509281 PTP/library.c(2):   0x9018
0.509285 PTP/library.c(2):   0x9019
0.509290 PTP/library.c(2):   0x901a
0.509294 PTP/library.c(2):   0x901b
0.509298 PTP/library.c(2):   0x901c
0.509303 PTP/library.c(2):   0x901d
0.509307 PTP/library.c(2):   0x901e
0.509311 PTP/library.c(2):   0x901f
0.509316 PTP/library.c(2):   0x9020
0.509320 PTP/library.c(2):   0x9021