From: William Manley <will@williammanley.net>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-media@vger.kernel.org, m.chehab@samsung.com
Subject: Re: [PATCH] [media] uvcvideo: Add GUID for BGR 8:8:8
Date: Thu, 11 Dec 2014 01:19:50 +0000 [thread overview]
Message-ID: <5488F136.6050907@williammanley.net> (raw)
In-Reply-To: <1514839.CAtLhmhmvy@avalon>
[-- Attachment #1: Type: text/plain, Size: 1328 bytes --]
On 10/12/14 23:54, Laurent Pinchart wrote:
> Hi William,
>
> Thank you for the patch.
>
> On Monday 08 December 2014 18:57:58 William Manley wrote:
>> The Magewell XI100DUSB-HDMI[1] video capture device reports the pixel
>> format "e436eb7d-524f-11ce-9f53-0020af0ba770". This is its GUID for
>> BGR 8:8:8.
>>
>> The UVC 1.5 spec[2] only defines GUIDs for YUY2, NV12, M420 and I420.
>> This seems to be an extension documented in the Microsoft Windows Media
>> Format SDK[3] - or at least the Media Format SDK was the only hit that
>> Google gave when searching for the GUID. This Media Format SDK defines
>> this GUID as corresponding to `MEDIASUBTYPE_RGB24`. Note though, the
>> XI100DUSB outputs BGR e.g. byte-reversed. I don't know if its the
>> capture device in error or Microsoft mean BGR when they say RGB.
>
> I believe Microsoft defines RGB as BGR. They do at least in BMP
> (https://en.wikipedia.org/wiki/BMP_file_format), probably because they
> consider the RGB pixel to be stored in little-endian format.
Thanks, that's helpful.
> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> I'll apply the patch to my tree and submit it for v3.20.
Great
> Could you please send me the output of 'lsusb -v' for your device, if possible
> running as root ?
lsusb output attached.
Thanks
Will
[-- Attachment #2: lsusb-Magewell-XI100DUSB-HDMI.txt --]
[-- Type: text/plain, Size: 59756 bytes --]
Bus 003 Device 002: ID 2935:0001
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x2935
idProduct 0x0001
bcdDevice 0.00
iManufacturer 1 Magewell
iProduct 2 XI100DUSB-HDMI
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 2474
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 3 XI100DUSB-HDMI Video
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 3 XI100DUSB-HDMI Video
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 52
dwClockFrequency 48.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x00000000
VideoControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 3
bmControls 0x0000000f
Brightness
Contrast
Hue
Saturation
iProcessing 0
bmVideoStandards 0x 9
None
SECAM - 625/50
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 2
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 3 XI100DUSB-HDMI Video
VideoStreaming Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 2
wTotalLength 2235
bEndPointAddress 131
bmInfo 0
bTerminalLink 3
bStillCaptureMethod 1
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 27
bmaControls( 1) 27
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 20
guidFormat {59555932-0000-1000-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 19
bAspectRatioX 16
bAspectRatioY 9
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 640
wHeight 360
dwMinBitRate 55296000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 640
wHeight 480
dwMinBitRate 73728000
dwMaxBitRate 294912000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 720
wHeight 480
dwMinBitRate 82944000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 691200
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 720
wHeight 576
dwMinBitRate 99532800
dwMaxBitRate 398131200
dwMaxVideoFrameBufferSize 829440
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 768
wHeight 576
dwMinBitRate 106168320
dwMaxBitRate 424673280
dwMaxVideoFrameBufferSize 884736
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 800
wHeight 600
dwMinBitRate 115200000
dwMaxBitRate 460800000
dwMaxVideoFrameBufferSize 960000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 856
wHeight 480
dwMinBitRate 98611200
dwMaxBitRate 394444800
dwMaxVideoFrameBufferSize 821760
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 960
wHeight 540
dwMinBitRate 124416000
dwMaxBitRate 497664000
dwMaxVideoFrameBufferSize 1036800
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1024
wHeight 576
dwMinBitRate 141557760
dwMaxBitRate 566231040
dwMaxVideoFrameBufferSize 1179648
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 10
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1024
wHeight 768
dwMinBitRate 188743680
dwMaxBitRate 754974720
dwMaxVideoFrameBufferSize 1572864
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 11
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 720
dwMinBitRate 221184000
dwMaxBitRate 884736000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 12
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 800
dwMinBitRate 245760000
dwMaxBitRate 983040000
dwMaxVideoFrameBufferSize 2048000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 13
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 960
dwMinBitRate 294912000
dwMaxBitRate 1179648000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 14
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 1024
dwMinBitRate 314572800
dwMaxBitRate 1258291200
dwMaxVideoFrameBufferSize 2621440
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 15
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1368
wHeight 768
dwMinBitRate 252149760
dwMaxBitRate 1008599040
dwMaxVideoFrameBufferSize 2101248
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 16
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1440
wHeight 900
dwMinBitRate 311040000
dwMaxBitRate 1244160000
dwMaxVideoFrameBufferSize 2592000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 17
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1600
wHeight 1200
dwMinBitRate 460800000
dwMaxBitRate 1843200000
dwMaxVideoFrameBufferSize 3840000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 18
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1680
wHeight 1050
dwMinBitRate 423360000
dwMaxBitRate 1693440000
dwMaxVideoFrameBufferSize 3528000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 19
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1920
wHeight 1080
dwMinBitRate 497664000
dwMaxBitRate 1990656000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 20
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1920
wHeight 1200
dwMinBitRate 552960000
dwMaxBitRate 2211840000
dwMaxVideoFrameBufferSize 4608000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 20
guidFormat {7deb36e4-4f52-ce11-9f53-0020af0ba770}
bBitsPerPixel 24
bDefaultFrameIndex 19
bAspectRatioX 16
bAspectRatioY 9
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 640
wHeight 360
dwMinBitRate 82944000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 691200
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 640
wHeight 480
dwMinBitRate 110592000
dwMaxBitRate 442368000
dwMaxVideoFrameBufferSize 921600
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 720
wHeight 480
dwMinBitRate 124416000
dwMaxBitRate 497664000
dwMaxVideoFrameBufferSize 1036800
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 720
wHeight 576
dwMinBitRate 149299200
dwMaxBitRate 597196800
dwMaxVideoFrameBufferSize 1244160
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 768
wHeight 576
dwMinBitRate 159252480
dwMaxBitRate 637009920
dwMaxVideoFrameBufferSize 1327104
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 800
wHeight 600
dwMinBitRate 172800000
dwMaxBitRate 691200000
dwMaxVideoFrameBufferSize 1440000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 856
wHeight 480
dwMinBitRate 147916800
dwMaxBitRate 591667200
dwMaxVideoFrameBufferSize 1232640
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 960
wHeight 540
dwMinBitRate 186624000
dwMaxBitRate 746496000
dwMaxVideoFrameBufferSize 1555200
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1024
wHeight 576
dwMinBitRate 212336640
dwMaxBitRate 849346560
dwMaxVideoFrameBufferSize 1769472
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 10
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1024
wHeight 768
dwMinBitRate 283115520
dwMaxBitRate 1132462080
dwMaxVideoFrameBufferSize 2359296
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 11
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 720
dwMinBitRate 331776000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 2764800
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 12
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 800
dwMinBitRate 368640000
dwMaxBitRate 1474560000
dwMaxVideoFrameBufferSize 3072000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 13
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 960
dwMinBitRate 442368000
dwMaxBitRate 1769472000
dwMaxVideoFrameBufferSize 3686400
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 14
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1280
wHeight 1024
dwMinBitRate 471859200
dwMaxBitRate 1887436800
dwMaxVideoFrameBufferSize 3932160
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 15
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1368
wHeight 768
dwMinBitRate 378224640
dwMaxBitRate 1512898560
dwMaxVideoFrameBufferSize 3151872
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 16
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1440
wHeight 900
dwMinBitRate 466560000
dwMaxBitRate 1866240000
dwMaxVideoFrameBufferSize 3888000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 17
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1600
wHeight 1200
dwMinBitRate 691200000
dwMaxBitRate 2764800000
dwMaxVideoFrameBufferSize 5760000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 18
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1680
wHeight 1050
dwMinBitRate 635040000
dwMaxBitRate 2540160000
dwMaxVideoFrameBufferSize 5292000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 19
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1920
wHeight 1080
dwMinBitRate 746496000
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 6220800
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 20
bmCapabilities 0x03
Still image supported
Fixed frame-rate
wWidth 1920
wHeight 1200
dwMinBitRate 829440000
dwMaxBitRate 3317760000
dwMaxVideoFrameBufferSize 6912000
dwDefaultFrameInterval 166667
bFrameIntervalType 7
dwFrameInterval( 0) 166667
dwFrameInterval( 1) 166834
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
dwFrameInterval( 5) 400000
dwFrameInterval( 6) 666667
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 15
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 1 Control Device
bFunctionProtocol 0
iFunction 4 XI100DUSB-HDMI Audio
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 4 XI100DUSB-HDMI Audio
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 30
bInCollection 1
baInterfaceNr( 0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 1
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 4 XI100DUSB-HDMI Audio
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 4 XI100DUSB-HDMI Audio
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 4
bMaxBurst 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 153
Report Descriptor: (length is 153)
Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
(null)
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report ID, data= [ 0x10 ] 16
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x02 ] 2
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x03 ] 3
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x04 ] 4
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x04 ] 4
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x05 ] 5
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x00 0x01 ] 256
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x05 ] 5
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x00 0x01 ] 256
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x20 ] 32
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x08 ] 8
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x21 ] 33
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x09 ] 9
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x22 ] 34
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x22 ] 34
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x23 ] 35
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x08 ] 8
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x23 ] 35
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x08 ] 8
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x30 ] 48
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x30 ] 48
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report ID, data= [ 0x40 ] 64
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Global): Report Count, data= [ 0x11 ] 17
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 22
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000002
Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 3
Lowest fully-functional device speed is SuperSpeed (5Gbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
Device Status: 0x000c
(Bus Powered)
U1 Enabled
U2 Enabled
next prev parent reply other threads:[~2014-12-11 1:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-08 18:57 [PATCH] [media] uvcvideo: Add GUID for BGR 8:8:8 William Manley
2014-12-10 23:54 ` Laurent Pinchart
2014-12-11 1:19 ` William Manley [this message]
2014-12-18 21:23 ` Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5488F136.6050907@williammanley.net \
--to=will@williammanley.net \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-media@vger.kernel.org \
--cc=m.chehab@samsung.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.