| Message ID | 20240319044200.32488-1-linh.tp.vu@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: uvcvideo: fix incorrect minimum value mapping for relative ptz controls | expand |
Hi Linh
Could you share the "lsusb -v " info of your device, and also what
are the raw values from the device for UVC_GET_MAX, UVC_GET_MIN for
UVC_CT_PANTILT_RELATIVE_CONTROL and UVC_CT_ZOOM_RELATIVE_CONTROL ?
Something like this (not tested :) ):
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index e59a463c27618..76c7adc3aa579 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -415,7 +415,11 @@ static s32 uvc_ctrl_get_zoom(struct
uvc_control_mapping *mapping,
return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]);
case UVC_GET_MIN:
+ printk(KERN_ERR "zoom: GET_MIN 0%x 0x%x 0%x\n",
data[0], data[1], data[2]);
+ return data[2];
case UVC_GET_MAX:
+ printk(KERN_ERR "zoom: GET_MAX 0%x 0x%x 0%x\n",
data[0], data[1], data[2]);
+ fallthrough;
case UVC_GET_RES:
case UVC_GET_DEF:
default:
@@ -441,8 +445,11 @@ static s32 uvc_ctrl_get_rel_speed(struct
uvc_control_mapping *mapping,
return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
: -data[first+1]);
case UVC_GET_MIN:
+ printk(KERN_ERR "speed: GET_MIN 0%x 0x%x 0%x\n",
data[first], data[first+1], data[first+2]);
return -data[first+1];
case UVC_GET_MAX:
+ printk(KERN_ERR "speed: GET_MAX 0%x 0x%x 0%x\n",
data[first], data[first+1], data[first+2]);
+ fallthrough;
case UVC_GET_RES:
case UVC_GET_DEF:
default:
Thanks!
On Tue, 19 Mar 2024 at 06:30, Linh Vu <linh.tp.vu@gmail.com> wrote:
>
> When mapping from UVC_CT_PANTILT_RELATIVE_CONTROL
> to V4L2_CID_PAN_SPEED and V4L2_CID_TILT_SPEED,
> and from UVC_CT_ZOOM_RELATIVE_CONTROL to V4L2_CID_ZOOM_CONTINUOUS,
> the minimum value of the movement should be negated of the maximum value.
>
> For example, if a UVC device (e.g., OBSBOT Tiny 2) declares a pan speed
> range [1, 160], its V4L2_CID_PAN_SPEED mapping has range [-160, 160].
>
> Currently, calling ioctl with VIDIOC_QUERY_EXT_CTRL and V4L2_CID_PAN_SPEED
> returns a minimum value of -1. When calling ioctl with VIDIOC_S_CTRL,
> V4L2_CID_PAN_SPEED and -100, the speed (velocity) of the pan movement gets
> clamped to -1.
>
> To get the minimum value of V4L2_CID_PAN_SPEED,
> uvc_ctrl_get_rel_speed is called with
> uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN) as data,
> which should be uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX).
>
> The same thing should be done for V4L2_CID_TILT_SPEED and
> V4L2_CID_ZOOM_CONTINUOUS.
>
> For V4L2_CID_ZOOM_CONTINUOUS, uvc_ctrl_get_zoom does not add the
> sign to the returned minimum value, so it's impossible to zoom out.
>
> Modify the data that is passed when querying the minimum
> value for V4L2_CID_PAN_SPEED, V4L2_CID_TILT_SPEED and
> V4L2_CID_ZOOM_CONTINUOUS.
> Also add sign to the returned minimum value in uvc_ctrl_get_zoom.
> Thus, the correct minimum value for relative PTZ controls can be returned.
>
> Signed-off-by: Linh Vu <linh.tp.vu@gmail.com>
> ---
> drivers/media/usb/uvc/uvc_ctrl.c | 24 +++++++++++++++++++-----
> 1 file changed, 19 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index e59a463c27618..00fd7e74e6d6b 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -415,6 +415,7 @@ static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping,
> return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]);
>
> case UVC_GET_MIN:
> + return -data[2];
> case UVC_GET_MAX:
> case UVC_GET_RES:
> case UVC_GET_DEF:
> @@ -1322,9 +1323,16 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> break;
> }
>
> - if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN)
> - v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> + if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) {
> + if (v4l2_ctrl->id == V4L2_CID_PAN_SPEED
> + || v4l2_ctrl->id == V4L2_CID_TILT_SPEED
> + || v4l2_ctrl->id == V4L2_CID_ZOOM_CONTINUOUS)
> + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> + else
> + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> + }
>
> if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX)
> v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX,
> @@ -1909,9 +1917,15 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> if (ret < 0)
> return ret;
> }
> + if (mapping->id == V4L2_CID_PAN_SPEED
> + || mapping->id == V4L2_CID_TILT_SPEED
> + || mapping->id == V4L2_CID_ZOOM_CONTINUOUS)
> + min = mapping->get(mapping, UVC_GET_MIN,
> + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> + else
> + min = mapping->get(mapping, UVC_GET_MIN,
> + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
>
> - min = mapping->get(mapping, UVC_GET_MIN,
> - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> max = mapping->get(mapping, UVC_GET_MAX,
> uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> step = mapping->get(mapping, UVC_GET_RES,
>
> base-commit: e0b8eb0f6d652981bfd9ba7c619c9d81ed087ad0
> --
> 2.34.1
>
>
Hi Ricardo,
Apology for the late reply, I had to go into the office to grab some devices.
Below is the "lsusb -v" dump, followed by raw values for UVC_GET_MIN and _MAX
for UVC_CT_PANTILT_RELATIVE_CONTROL and UVC_CT_ZOOM_RELATIVE_CONTROL
for 2 different PTZ cameras I've got.
Bus 002 Device 005: ID 3564:fef8 Remo Tech Co., Ltd. OBSBOT Tiny 2
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.10
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x3564
idProduct 0xfef8
bcdDevice 4.09
iManufacturer 1 Remo Tech Co., Ltd.
iProduct 2 OBSBOT Tiny 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x04c2
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 4 OBSBOT Multifunction
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 OBSBOT Tiny 2 StreamCamera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 OBSBOT Tiny 2 StreamCamera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x004e
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 0x00023e3e
Auto-Exposure Mode
Auto-Exposure Priority
Exposure Time (Absolute)
Exposure Time (Relative)
Focus (Absolute)
Zoom (Absolute)
Zoom (Relative)
PanTilt (Absolute)
PanTilt (Relative)
Roll (Absolute)
Focus, Auto
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 400
bControlSize 2
bmControls 0x0000f7df
Brightness
Contrast
Hue
Saturation
Sharpness
White Balance Temperature
White Balance Component
Backlight Compensation
Gain
Power Line Frequency
White Balance Temperature, Auto
White Balance Component, Auto
Digital Multiplier
Digital Multiplier Limit
iProcessing 0
bmVideoStandards 0x1b
None
NTSC - 525/60
SECAM - 625/50
NTSC - 625/50
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 2
guidExtensionCode {9a1e7291-6843-4683-6d92-39bc7906ee49}
bNumControls 7
bNrInPins 1
baSourceID( 0) 3
bControlSize 2
bmControls( 0) 0x7f
bmControls( 1) 0x00
iExtension 0
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 7
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 2
iTerminal 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 6 Video Streaming
VideoStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 3
wTotalLength 0x03c0
bEndpointAddress 0x81 EP 1 IN
bmInfo 0
bTerminalLink 7
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 4
bmaControls( 1) 0
bmaControls( 2) 4
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 1
bNumFrameDescriptors 6
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 995328000
dwMaxBitRate 1990656000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 1327104000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 333333
bFrameIntervalType 5
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 221184000
dwMaxBitRate 884736000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 294912000
dwMaxBitRate 1179648000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1440
dwMinBitRate 663552000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 4000
wHeight 3000
dwMinBitRate 1920000000
dwMaxBitRate 1920000000
dwMaxVideoFrameBufferSize 24000000
dwDefaultFrameInterval 333333
bFrameIntervalType 5
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 7
guidFormat
{32595559-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 5
bAspectRatioX 0
bAspectRatioY 0
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 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 360
dwMinBitRate 55296000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 73728000
dwMaxBitRate 294912000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 221184000
dwMaxBitRate 884736000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 294912000
dwMaxBitRate 1179648000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 497664000
dwMaxBitRate 995328000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 333333
bFrameIntervalType 5
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1440
dwMinBitRate 663552000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 333333
bFrameIntervalType 5
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 1990656000
dwMaxBitRate 1990656000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 666666
bFrameIntervalType 1
dwFrameInterval( 0) 666666
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 16 (FORMAT_FRAME_BASED)
bFormatIndex 3
bNumFrameDescriptors 5
guidFormat
{34363248-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
bVariableSize 1
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 497664000
dwMaxBitRate 1990656000
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 1327104000
dwMaxBitRate 1327104000
dwDefaultFrameInterval 333333
bFrameIntervalType 5
dwBytesPerLine 0
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 221184000
dwMaxBitRate 884736000
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 294912000
dwMaxBitRate 1179648000
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1440
dwMinBitRate 663552000
dwMaxBitRate 1327104000
dwDefaultFrameInterval 333333
bFrameIntervalType 6
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 400000
dwFrameInterval( 3) 416666
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 13
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 0
iFunction 8 OBSBOT Tiny2 Audio
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 8 OBSBOT Tiny2 Audio
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x0027
bInCollection 1
baInterfaceNr(0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 13 Capture Channels
iTerminal 12 OBSBOT Tiny2 Microphone
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 5
iTerminal 14 Capture Output terminal
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 5
bSourceID 3
bControlSize 2
bmaControls(0) 0x0003
Mute Control
Volume Control
iFeature 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 17 OBSBOT Tiny2 Microphone
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 18 Capture Active
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 4
bDelay 1 frames
wFormatTag 0x0001 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 9
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
bMaxBurst 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000006
BESL Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000f
Device can operate at Low Speed (1Mbps)
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 1 micro seconds
bU2DevExitLat 500 micro seconds
Device Status: 0x0001
Self Powered
...
[ 1154.692514] speed: GET_MIN 00 0x1 00
[ 1154.693014] speed: GET_MAX 00 0xa0 00
[ 1154.693352] speed: GET_MIN 00 0x1 00
[ 1154.693634] speed: GET_MAX 00 0x78 00
...
[ 1314.517485] zoom: GET_MAX 00 0x0 00
[ 1314.517900] zoom: GET_MAX 00 0x0 064
...
---
Bus 002 Device 003: ID 2e7e:0893 UHD Camera
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x2e7e
idProduct 0x0893
bcdDevice 0.01
iManufacturer 0
iProduct 2 UHD Camera
iSerial 1 3258004D
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x09fa
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 400mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 0
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x00a0
dwClockFrequency 30.000000MHz
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 16384
wOcularFocalLength 20
bControlSize 3
bmControls 0x00039eea
Auto-Exposure Mode
Exposure Time (Absolute)
Focus (Absolute)
Focus (Relative)
Iris (Absolute)
Zoom (Absolute)
Zoom (Relative)
PanTilt (Absolute)
PanTilt (Relative)
Reserved
Reserved
Focus, Auto
VideoControl Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 3
bSourceID 1
wMaxMultiplier 16384
bControlSize 2
bmControls 0x0000071f
Brightness
Contrast
Hue
Saturation
Sharpness
Backlight Compensation
Gain
Power Line Frequency
iProcessing 0
bmVideoStandards 0x1b
None
NTSC - 525/60
SECAM - 625/50
NTSC - 625/50
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 12
guidExtensionCode {a29e7641-de04-47e3-8b2b-f4341aff003b}
bNumControls 7
bNrInPins 1
baSourceID( 0) 3
bControlSize 2
bmControls( 0) 0x07
bmControls( 1) 0x2b
iExtension 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 13
guidExtensionCode {a29e7641-de04-47e3-8b2b-f4341aff003b}
bNumControls 7
bNrInPins 1
baSourceID( 0) 3
bControlSize 2
bmControls( 0) 0x07
bmControls( 1) 0x2b
iExtension 0
VideoControl Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 14
guidExtensionCode {3c16a808-701c-49c7-af98-2ec6c125b963}
bNumControls 1
bNrInPins 1
baSourceID( 0) 3
bControlSize 2
bmControls( 0) 0x00
bmControls( 1) 0x10
iExtension 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 15
guidExtensionCode {9d33bbe7-e619-435c-8fac-528eecccbca4}
bNumControls 9
bNrInPins 1
baSourceID( 0) 3
bControlSize 3
bmControls( 0) 0xe0
bmControls( 1) 0x3c
bmControls( 2) 0x00
iExtension 0
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 3
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 0x0040 1x 64 bytes
bInterval 8
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
VideoStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 3
wTotalLength 0x0712
bEndpointAddress 0x83 EP 3 IN
bmInfo 0
bTerminalLink 4
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 0
bmaControls( 1) 0
bmaControls( 2) 0
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 1
bNumFrameDescriptors 8
bFlags 1
Fixed-size samples: Yes
bDefaultFrameIndex 7
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 294912000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 360
dwMinBitRate 18432000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 408
dwMinBitRate 23500800
dwMaxBitRate 282009600
dwMaxVideoFrameBufferSize 587520
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 27648000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 691200
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1024
wHeight 576
dwMinBitRate 47185920
dwMaxBitRate 566231040
dwMaxVideoFrameBufferSize 1179648
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 73728000
dwMaxBitRate 884736000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 165888000
dwMaxBitRate 1990656000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 663552000
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
dwFrameInterval( 5) 1000000
dwFrameInterval( 6) 1333333
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 2
guidFormat
{32595559-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 2
bAspectRatioX 0
bAspectRatioY 0
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 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 73728000
dwMaxBitRate 442368000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
dwFrameInterval( 5) 1000000
dwFrameInterval( 6) 1333333
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 165888000
dwMaxBitRate 995328000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
dwFrameInterval( 5) 1000000
dwFrameInterval( 6) 1333333
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 16 (FORMAT_FRAME_BASED)
bFormatIndex 3
bNumFrameDescriptors 8
guidFormat
{34363248-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 7
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
bVariableSize 1
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 294912000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 360
dwMinBitRate 18432000
dwMaxBitRate 221184000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 408
dwMinBitRate 23500800
dwMaxBitRate 282009600
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 27648000
dwMaxBitRate 331776000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1024
wHeight 576
dwMinBitRate 47185920
dwMaxBitRate 566231040
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 73728000
dwMaxBitRate 884736000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 165888000
dwMaxBitRate 1990656000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 663552000
dwMaxBitRate 3981312000
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwBytesPerLine 0
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
dwFrameInterval( 5) 1000000
dwFrameInterval( 6) 1333333
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 16 (FORMAT_FRAME_BASED)
bFormatIndex 4
bNumFrameDescriptors 8
guidFormat
{35363248-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 7
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
bVariableSize 1
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 24576000
dwMaxBitRate 294912000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 360
dwMinBitRate 18432000
dwMaxBitRate 221184000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 408
dwMinBitRate 23500800
dwMaxBitRate 282009600
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 27648000
dwMaxBitRate 331776000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1024
wHeight 576
dwMinBitRate 47185920
dwMaxBitRate 566231040
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 73728000
dwMaxBitRate 884736000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 66
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 165888000
dwMaxBitRate 1990656000
dwDefaultFrameInterval 333333
bFrameIntervalType 10
dwBytesPerLine 0
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 333333
dwFrameInterval( 3) 400000
dwFrameInterval( 4) 416666
dwFrameInterval( 5) 500000
dwFrameInterval( 6) 666666
dwFrameInterval( 7) 1000000
dwFrameInterval( 8) 1333333
dwFrameInterval( 9) 2000000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 17 (FRAME_FRAME_BASED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 663552000
dwMaxBitRate 3981312000
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwBytesPerLine 0
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 400000
dwFrameInterval( 2) 416666
dwFrameInterval( 3) 500000
dwFrameInterval( 4) 666666
dwFrameInterval( 5) 1000000
dwFrameInterval( 6) 1333333
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00c0 1x 192 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0180 1x 384 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 4
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0280 1x 640 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 5
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0320 1x 800 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 6
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 7
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 8
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 2
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 9
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 3
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 10
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 11
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 12
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 6
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 13
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 7
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 14
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 8
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 15
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 16
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 12
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 17
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 15
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 29
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0030 1x 48 bytes
bInterval 1
bMaxBurst 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0030 1x 48 bytes
bInterval 1
bMaxBurst 0
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 3
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 1 Control Device
bFunctionProtocol 0
iFunction 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x0026
bInCollection 1
baInterfaceNr(0) 4
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 1
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 5
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 5
bSourceID 1
bControlSize 1
bmaControls(0) 0x03
Mute Control
Volume Control
iFeature 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 1 frames
wFormatTag 0x0001 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 9
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
bRefresh 0
bSynchAddress 0
bMaxBurst 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000000
(Missing must-be-set LPM bit!)
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000c
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 3
Lowest fully-functional device speed is SuperSpeed (5Gbps)
bU1DevExitLat 0 micro seconds
bU2DevExitLat 0 micro seconds
Device Status: 0x0001
Self Powered
...
[ 1541.366590] speed: GET_MIN 00 0x0 00
[ 1541.367110] speed: GET_MAX 00 0x18 00
[ 1541.367901] speed: GET_MIN 00 0x0 00
[ 1541.368444] speed: GET_MAX 00 0x14 00
...
[ 1704.283565] zoom: GET_MAX 00 0x0 00
[ 1704.284028] zoom: GET_MAX 00 0x0 07
...
Best regards/Trân trọng,
Linh Vu (Vũ Thị Phương Linh)
linh.tp.vu@gmail.com
On Tue, Mar 19, 2024 at 8:52 PM Ricardo Ribalda <ribalda@chromium.org> wrote:
>
> Hi Linh
>
> Could you share the "lsusb -v " info of your device, and also what
> are the raw values from the device for UVC_GET_MAX, UVC_GET_MIN for
> UVC_CT_PANTILT_RELATIVE_CONTROL and UVC_CT_ZOOM_RELATIVE_CONTROL ?
>
> Something like this (not tested :) ):
>
> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> index e59a463c27618..76c7adc3aa579 100644
> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> @@ -415,7 +415,11 @@ static s32 uvc_ctrl_get_zoom(struct
> uvc_control_mapping *mapping,
> return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]);
>
> case UVC_GET_MIN:
> + printk(KERN_ERR "zoom: GET_MIN 0%x 0x%x 0%x\n",
> data[0], data[1], data[2]);
> + return data[2];
> case UVC_GET_MAX:
> + printk(KERN_ERR "zoom: GET_MAX 0%x 0x%x 0%x\n",
> data[0], data[1], data[2]);
> + fallthrough;
> case UVC_GET_RES:
> case UVC_GET_DEF:
> default:
> @@ -441,8 +445,11 @@ static s32 uvc_ctrl_get_rel_speed(struct
> uvc_control_mapping *mapping,
> return (rel == 0) ? 0 : (rel > 0 ? data[first+1]
> : -data[first+1]);
> case UVC_GET_MIN:
> + printk(KERN_ERR "speed: GET_MIN 0%x 0x%x 0%x\n",
> data[first], data[first+1], data[first+2]);
> return -data[first+1];
> case UVC_GET_MAX:
> + printk(KERN_ERR "speed: GET_MAX 0%x 0x%x 0%x\n",
> data[first], data[first+1], data[first+2]);
> + fallthrough;
> case UVC_GET_RES:
> case UVC_GET_DEF:
> default:
>
> Thanks!
>
> On Tue, 19 Mar 2024 at 06:30, Linh Vu <linh.tp.vu@gmail.com> wrote:
> >
> > When mapping from UVC_CT_PANTILT_RELATIVE_CONTROL
> > to V4L2_CID_PAN_SPEED and V4L2_CID_TILT_SPEED,
> > and from UVC_CT_ZOOM_RELATIVE_CONTROL to V4L2_CID_ZOOM_CONTINUOUS,
> > the minimum value of the movement should be negated of the maximum value.
> >
> > For example, if a UVC device (e.g., OBSBOT Tiny 2) declares a pan speed
> > range [1, 160], its V4L2_CID_PAN_SPEED mapping has range [-160, 160].
> >
> > Currently, calling ioctl with VIDIOC_QUERY_EXT_CTRL and V4L2_CID_PAN_SPEED
> > returns a minimum value of -1. When calling ioctl with VIDIOC_S_CTRL,
> > V4L2_CID_PAN_SPEED and -100, the speed (velocity) of the pan movement gets
> > clamped to -1.
> >
> > To get the minimum value of V4L2_CID_PAN_SPEED,
> > uvc_ctrl_get_rel_speed is called with
> > uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN) as data,
> > which should be uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX).
> >
> > The same thing should be done for V4L2_CID_TILT_SPEED and
> > V4L2_CID_ZOOM_CONTINUOUS.
> >
> > For V4L2_CID_ZOOM_CONTINUOUS, uvc_ctrl_get_zoom does not add the
> > sign to the returned minimum value, so it's impossible to zoom out.
> >
> > Modify the data that is passed when querying the minimum
> > value for V4L2_CID_PAN_SPEED, V4L2_CID_TILT_SPEED and
> > V4L2_CID_ZOOM_CONTINUOUS.
> > Also add sign to the returned minimum value in uvc_ctrl_get_zoom.
> > Thus, the correct minimum value for relative PTZ controls can be returned.
> >
> > Signed-off-by: Linh Vu <linh.tp.vu@gmail.com>
> > ---
> > drivers/media/usb/uvc/uvc_ctrl.c | 24 +++++++++++++++++++-----
> > 1 file changed, 19 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> > index e59a463c27618..00fd7e74e6d6b 100644
> > --- a/drivers/media/usb/uvc/uvc_ctrl.c
> > +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> > @@ -415,6 +415,7 @@ static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping,
> > return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]);
> >
> > case UVC_GET_MIN:
> > + return -data[2];
> > case UVC_GET_MAX:
> > case UVC_GET_RES:
> > case UVC_GET_DEF:
> > @@ -1322,9 +1323,16 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
> > break;
> > }
> >
> > - if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN)
> > - v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> > - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> > + if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) {
> > + if (v4l2_ctrl->id == V4L2_CID_PAN_SPEED
> > + || v4l2_ctrl->id == V4L2_CID_TILT_SPEED
> > + || v4l2_ctrl->id == V4L2_CID_ZOOM_CONTINUOUS)
> > + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> > + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> > + else
> > + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN,
> > + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> > + }
> >
> > if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX)
> > v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX,
> > @@ -1909,9 +1917,15 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> > if (ret < 0)
> > return ret;
> > }
> > + if (mapping->id == V4L2_CID_PAN_SPEED
> > + || mapping->id == V4L2_CID_TILT_SPEED
> > + || mapping->id == V4L2_CID_ZOOM_CONTINUOUS)
> > + min = mapping->get(mapping, UVC_GET_MIN,
> > + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> > + else
> > + min = mapping->get(mapping, UVC_GET_MIN,
> > + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> >
> > - min = mapping->get(mapping, UVC_GET_MIN,
> > - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN));
> > max = mapping->get(mapping, UVC_GET_MAX,
> > uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX));
> > step = mapping->get(mapping, UVC_GET_RES,
> >
> > base-commit: e0b8eb0f6d652981bfd9ba7c619c9d81ed087ad0
> > --
> > 2.34.1
> >
> >
>
>
> --
> Ricardo Ribalda
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index e59a463c27618..00fd7e74e6d6b 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -415,6 +415,7 @@ static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping, return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]); case UVC_GET_MIN: + return -data[2]; case UVC_GET_MAX: case UVC_GET_RES: case UVC_GET_DEF: @@ -1322,9 +1323,16 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain, break; } - if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) - v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); + if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) { + if (v4l2_ctrl->id == V4L2_CID_PAN_SPEED + || v4l2_ctrl->id == V4L2_CID_TILT_SPEED + || v4l2_ctrl->id == V4L2_CID_ZOOM_CONTINUOUS) + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX)); + else + v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); + } if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX, @@ -1909,9 +1917,15 @@ int uvc_ctrl_set(struct uvc_fh *handle, if (ret < 0) return ret; } + if (mapping->id == V4L2_CID_PAN_SPEED + || mapping->id == V4L2_CID_TILT_SPEED + || mapping->id == V4L2_CID_ZOOM_CONTINUOUS) + min = mapping->get(mapping, UVC_GET_MIN, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX)); + else + min = mapping->get(mapping, UVC_GET_MIN, + uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); - min = mapping->get(mapping, UVC_GET_MIN, - uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN)); max = mapping->get(mapping, UVC_GET_MAX, uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX)); step = mapping->get(mapping, UVC_GET_RES,
When mapping from UVC_CT_PANTILT_RELATIVE_CONTROL to V4L2_CID_PAN_SPEED and V4L2_CID_TILT_SPEED, and from UVC_CT_ZOOM_RELATIVE_CONTROL to V4L2_CID_ZOOM_CONTINUOUS, the minimum value of the movement should be negated of the maximum value. For example, if a UVC device (e.g., OBSBOT Tiny 2) declares a pan speed range [1, 160], its V4L2_CID_PAN_SPEED mapping has range [-160, 160]. Currently, calling ioctl with VIDIOC_QUERY_EXT_CTRL and V4L2_CID_PAN_SPEED returns a minimum value of -1. When calling ioctl with VIDIOC_S_CTRL, V4L2_CID_PAN_SPEED and -100, the speed (velocity) of the pan movement gets clamped to -1. To get the minimum value of V4L2_CID_PAN_SPEED, uvc_ctrl_get_rel_speed is called with uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MIN) as data, which should be uvc_ctrl_data(ctrl, UVC_CTRL_DATA_MAX). The same thing should be done for V4L2_CID_TILT_SPEED and V4L2_CID_ZOOM_CONTINUOUS. For V4L2_CID_ZOOM_CONTINUOUS, uvc_ctrl_get_zoom does not add the sign to the returned minimum value, so it's impossible to zoom out. Modify the data that is passed when querying the minimum value for V4L2_CID_PAN_SPEED, V4L2_CID_TILT_SPEED and V4L2_CID_ZOOM_CONTINUOUS. Also add sign to the returned minimum value in uvc_ctrl_get_zoom. Thus, the correct minimum value for relative PTZ controls can be returned. Signed-off-by: Linh Vu <linh.tp.vu@gmail.com> --- drivers/media/usb/uvc/uvc_ctrl.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) base-commit: e0b8eb0f6d652981bfd9ba7c619c9d81ed087ad0