On 09/05/16 21:01, de_witte_koen@xxxxxxxxxx wrote:
In short:
Is it normal that I can use the v4l2-ctl command to adjust brightness, saturation, hue, etc but not to adjust more interesting parameters like bitrate, aspect ration, etc?
Working:
pi@raspberrypi:~ $ cat /sys/class/pvrusb2/sn-4034395926/ctl_hue/cur_val
0
pi@raspberrypi:~ $ v4l2-ctl -c hue=1
pi@raspberrypi:~ $ cat /sys/class/pvrusb2/sn-4034395926/ctl_hue/cur_val
1
Not working:
pi@raspberrypi:~ $ cat /sys/class/pvrusb2/sn-4034395926/ctl_video_bitrate/cur_val
6000000
pi@raspberrypi:~ $ v4l2-ctl -c bitrate=6000000
unknown control 'bitrate'
pi@raspberrypi:~ $ v4l2-ctl -c video_bitrate=6000000
unknown control 'video_bitrate'
pi@raspberrypi:~ $ v4l2-ctl -c ctl_video_bitrate=6000000
unknown control 'ctl_video_bitrate'
the pvrusb2 driver has created all sysfs parameters and they work using the "echo" method but I thought this was also the purpose of the v4l2-ctl command, correct?
Some details, let me know if you need more.
The problem here is that the pvrusb2 driver predates the V4L2 control
framework for handling controls. Instead it has its own implementation
and that is known to be buggy. For a variety of reasons it is not easy
to rework this driver to use the control framework.
I've CC-ed the maintainer, perhaps he can make a patch that at least
exposes these controls through the QUERYCTRL ioctl (they don't seem to
turn up when enumerating the controls, which is why the above fails).
Regards,
Hans
Regards,
Koen
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 4.4.13+ #894 Mon Jun 13 12:43:26 BST 2016 armv6l GNU/Linux
pi@raspberrypi:~ $
pi@raspberrypi:~ $ v4l2-ctl --all
Driver Info (not using libv4l2):
Driver name : pvrusb2
Card type : WinTV HVR-1900 Model 73xxx
Bus info : usb-20980000.usb-1.3
Driver version: 4.4.13
Capabilities : 0x81270001
Video Capture
Tuner
Audio
Radio
Read/Write
Extended Pix Format
Device Capabilities
Device Caps : 0x01230001
Video Capture
Tuner
Audio
Read/Write
Extended Pix Format
Priority: 2
Frequency for tuner 0: 980 (61.250000 MHz)
Tuner 0:
Name :
Capabilities : 62.5 kHz multi-standard stereo lang1 lang2 freq-bands
Frequency range : 44.000 MHz - 958.000 MHz
Signal strength/AFC : 0%/0
Current audio mode : stereo
Available subchannels: mono lang2
Video input : 0 (television: ok)
Audio input : 0 (PVRUSB2 Audio)
Video Standard = 0x00000000
Format Video Capture:
Width/Height : 720/480
Pixel Format : ''
Field : Interlaced
Bytes per Line: 0
Size Image : 32768
Colorspace : Unknown (00000000)
Flags :
Crop Capability Video Capture:
Bounds : Left 0, Top 0, Width 0, Height 0
Default : Left 0, Top 0, Width 0, Height 0
Pixel Aspect: 0/0
Crop: Left 0, Top 0, Width 720, Height 480
Streaming Parameters Video Capture:
Frames per second: 25.000 (25/1)
Read buffers : 2
brightness (int) : min=0 max=255 step=1 default=128 value=128
contrast (int) : min=0 max=127 step=1 default=68 value=68
saturation (int) : min=0 max=127 step=1 default=64 value=64
hue (int) : min=-128 max=127 step=1 default=0 value=0
volume (int) : min=0 max=65535 step=1 default=62000 value=62000
balance (int) : min=-32768 max=32767 step=1 default=0 value=0
bass (int) : min=-32768 max=32767 step=1 default=0 value=0
treble (int) : min=-32768 max=32767 step=1 default=0 value=0
mute (bool) : default=0 value=0
dmesg output:
[ 4.162258] scsi host0: usb-storage 1-1.2:1.0
[ 4.258220] usb 1-1.3: new high-speed USB device number 5 using dwc_otg
[ 4.382814] usb 1-1.3: New USB device found, idVendor=2040, idProduct=7300
[ 4.391713] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4.400866] usb 1-1.3: Product: WinTV
[ 4.406259] usb 1-1.3: Manufacturer: Hauppauge
[ 4.412471] usb 1-1.3: SerialNumber: 7300-00-F077FF16
...
[ 10.463517] media: Linux media interface: v0.10
[ 10.547654] Linux video capture interface: v2.00
[ 10.660771] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 10.781359] pvrusb2: Hardware description: WinTV HVR-1900 Model 73xxx
[ 10.798664] usbcore: registered new interface driver pvrusb2
[ 10.798702] pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
[ 10.798721] pvrusb2: Debug mask is 1 (0x1)
[ 11.484744] systemd-journald[117]: Received request to flush runtime journal from PID 1
[ 11.782401] pvrusb2: Device microcontroller firmware (re)loaded; it should now reset and reconnect.
[ 11.974683] usb 1-1.3: USB disconnect, device number 5
[ 13.748236] usb 1-1.3: new high-speed USB device number 6 using dwc_otg
[ 13.858748] usb 1-1.3: New USB device found, idVendor=2040, idProduct=7300
[ 13.858790] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 13.858810] usb 1-1.3: Product: WinTV
[ 13.858827] usb 1-1.3: Manufacturer: Hauppauge
[ 13.858844] usb 1-1.3: SerialNumber: 7300-00-F077FF16
[ 13.868612] pvrusb2: Hardware description: WinTV HVR-1900 Model 73xxx
[ 13.921561] pvrusb2: Binding ir_rx_z8f0811_haup to i2c address 0x71.
[ 13.921787] pvrusb2: Binding ir_tx_z8f0811_haup to i2c address 0x70.
[ 14.099430] cx25840 3-0044: cx25843-24 found @ 0x88 (pvrusb2_a)
[ 14.118546] pvrusb2: Attached sub-driver cx25840
[ 14.415416] tuner 3-0042: Tuner -1 found with type(s) Radio TV.
[ 14.415503] pvrusb2: Attached sub-driver tuner
...
[ 16.664488] cx25840 3-0044: loaded v4l-cx25840.fw firmware (16382 bytes)
[ 16.786299] tveeprom 3-00a2: Hauppauge model 73219, rev D2F5, serial# 4034395926
[ 16.786337] tveeprom 3-00a2: MAC address is 00:0d:fe:77:ff:16
[ 16.786356] tveeprom 3-00a2: tuner model is NXP 18271C2 (idx 155, type 54)
[ 16.786377] tveeprom 3-00a2: TV standards PAL(B/G) PAL(I) SECAM(L/L') PAL(D/D1/K) ATSC/DVB Digital (eeprom 0xf4)
[ 16.786393] tveeprom 3-00a2: audio processor is CX25843 (idx 37)
[ 16.786410] tveeprom 3-00a2: decoder processor is CX25843 (idx 30)
[ 16.786426] tveeprom 3-00a2: has radio, has IR receiver, has IR transmitter
[ 16.786522] pvrusb2: Device initialization completed successfully.
[ 16.833872] pvrusb2: registered device video0 [mpeg]
[ 16.833917] DVB: registering new adapter (pvrusb2-dvb)
[ 17.724319] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 17.725055] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 19.185810] cx25840 3-0044: loaded v4l-cx25840.fw firmware (16382 bytes)
[ 19.318894] tda829x 3-0042: setting tuner address to 60
[ 19.336993] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
[ 19.348636] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 19.408700] tda18271 3-0060: creating new instance
[ 19.458819] TDA18271HD/C2 detected @ 3-0060
[ 20.358789] tda18271: performing RF tracking filter calibration
[ 39.498969] tda18271: RF tracking filter calibration complete
[ 39.568994] tda829x 3-0042: type set to tda8295+18271
[ 46.439239] cx25840 3-0044: 0x0000 is not a valid video input!
[ 46.498783] usb 1-1.3: DVB: registering adapter 0 frontend 0 (NXP TDA10048HN DVB-T)...
[ 46.507172] tda829x 3-0042: type set to tda8295
[ 46.547113] tda18271 3-0060: attaching existing instance
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