Re: [PATCH] bttv: Add a radio compat_ioctl file operation.

From: Bongani Hlope
Date: Mon Mar 24 2008 - 02:58:41 EST

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On Sunday 23 March 2008 15:50:17 Mauro Carvalho Chehab wrote:
> On Sun, 23 Mar 2008 15:25:22 +0200
>
> Bongani Hlope <bonganilinux@xxxxxxxxxx> wrote:
> > rpm -qa | grep radio
> > radio-3.95-7mdv2008.0
>
> Hmm... exactly the same version I have here.
>
> > 00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host
> > Bridge (rev 01) 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI
> > bridge [K8T800/K8T890 South] 00:11.0 ISA bridge: VIA Technologies, Inc.
> > VT8237 ISA bridge [KT600/K8T800/K8T890 South]
>
> It used to have some issues with VIA and PCI, if you're using overlay mode
> (this is the default, for xawtv).
>

xawtv works fine, it's only radio that has a problem since 2.6.25-rc?

> This is due to some issues on buggy VIA bridges, when handling PCI2PCI data
> transfers, used in overlay mode. If a PCI2PCI conflicts with a PCI2MEM
> transfer (or a MEM2PCI), you may suffer data loss.
>
> Are you trying to use radio just after a clean reboot, or are you
> experiencing those troubles after running a video application that might be
> using overlay mode?
>

I'm trying to use radio after a clean reboot, as I said above; xatwv and
tvtime don't seem to have a problem.

> Could you please send me your .config? I'll try to run the same config as
> you, with the latest -rc.
>

attached

> Cheers,
> Mauro

Oh...

v4l-info /dev/radio

causes this oops (clean reboot)

BUG: unable to handle kernel NULL pointer dereference at 0000000000000250
IP: [<ffffffff8030fe54>] strlcpy+0x11/0x36
PGD 68650067 PUD 7526f067 PMD 0
Oops: 0000 [1] PREEMPT SMP
CPU 1
Modules linked in: snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
binfmt_misc loop nls_cp437 vfat fat nls_iso8859_1 ntfs thermal processor fan
container button pcspkr snd_pcm_oss snd_mixer_oss tuner snd_emu10k1 tea5767
tda8290 tuner_xc2028 tda9887 tuner_simple snd_rawmidi mt20xx snd_ac97_codec
tea5761 bttv ac97_bus snd_pcm ir_common snd_seq_device compat_ioctl32
snd_timer firewire_ohci videodev snd_page_alloc uhci_hcd firewire_core
ehci_hcd snd_util_mem v4l1_compat v4l2_common snd_hwdep usbcore crc_itu_t
ide_cd_mod videobuf_dma_sg snd sr_mod ohci1394 videobuf_core btcx_risc
emu10k1_gp ieee1394 cdrom i2c_viapro tg3 gameport soundcore sg tveeprom evdev
Pid: 4756, comm: v4l-info Tainted: G M 2.6.25-rc5 #44
RIP: 0010:[<ffffffff8030fe54>] [<ffffffff8030fe54>] strlcpy+0x11/0x36
RSP: 0018:ffff81006414fcb8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff81006414fdf8 RCX: ffffffffffffffff
RDX: 0000000000000020 RSI: 0000000000000250 RDI: 0000000000000250
RBP: ffff81006414fcb8 R08: ffff81006414fe08 R09: ffff81006414fdf8
R10: ffff81007d885788 R11: 0000000000000202 R12: ffff81007fbe7800
R13: 0000000080685600 R14: ffff81007e76d800 R15: ffffffff88165110
FS: 00007f00eb5666f0(0000) GS:ffff81007fb6adc0(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000250 CR3: 000000007686f000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process v4l-info (pid: 4756, threadinfo ffff81006414e000, task
ffff81007e8da180)
Stack: ffff81006414fcd8 ffffffff88145d33 ffff81007d885788 ffff81006414fdf8
ffff81006414fdb8 ffffffff88100e58 ffffffffc008561c ffff81006414fd28
ffff81006414fd08 ffffffff88149b72 ffff81006414fd58 ffffffff88142ed2
Call Trace:
[<ffffffff88145d33>] :bttv:radio_querycap+0x39/0x6b
[<ffffffff88100e58>] :videodev:__video_do_ioctl+0x579/0x2e16
[<ffffffff88149b72>] ? :bttv:bttv_call_i2c_clients+0x16/0x18
[<ffffffff88142ed2>] ? :bttv:audio_mux+0x105/0x1b5
[<ffffffff80260449>] ? filemap_fault+0x1fe/0x371
[<ffffffff88103a95>] :videodev:video_ioctl2+0x1b8/0x259
[<ffffffff8026d36b>] ? handle_mm_fault+0x341/0x69b
[<ffffffff80291252>] vfs_ioctl+0x5e/0x77
[<ffffffff802914b8>] do_vfs_ioctl+0x24d/0x262
[<ffffffff8045d881>] ? do_page_fault+0x434/0x7aa
[<ffffffff8029150f>] sys_ioctl+0x42/0x67
[<ffffffff8020b32b>] system_call_after_swapgs+0x7b/0x80

Code: 4c 29 c2 48 39 d0 72 04 48 8d 4a ff fc 4c 89 cf 4c 01 c0 f3 a4 c6 07 00
c9 c3 55 31 c0 48 83 c9 ff fc 49 89 f8 48 89 f7 48 89 e5 <f2> ae 48 85 d2 48
f7 d1 48 8d 41 ff 74 15 48 39 d0 48 89 c1 72
RIP [<ffffffff8030fe54>] strlcpy+0x11/0x36
RSP <ffff81006414fcb8>
CR2: 0000000000000250
---[ end trace 7e58c9e343c88870 ]---

but

v4l-info /dev/video works fine

### v4l2 device info [/dev/video] ###
general info
VIDIOC_QUERYCAP
driver : "bttv"
card : "BT878 video (Lifeview FlyVideo "
bus_info : "PCI:0000:00:05.0"
version : 0.9.17
capabilities : 0x5010015
[VIDEO_CAPTURE,VIDEO_OVERLAY,VBI_CAPTURE,TUNER,READWRITE,STREAMING]

standards
VIDIOC_ENUMSTD(0)
index : 0
id : 0xff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K]
name : "PAL"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(1)
index : 1
id : 0x100 [PAL_M]
name : "PAL-M"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(2)
index : 2
id : 0x200 [PAL_N]
name : "PAL-N"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(3)
index : 3
id : 0x400 [PAL_Nc]
name : "PAL-Nc"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625
VIDIOC_ENUMSTD(4)
index : 4
id : 0x800 [PAL_60]
name : "PAL-60"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(5)
index : 5
id : 0xb000 [NTSC_M,NTSC_M_JP,?]
name : "NTSC"
frameperiod.numerator : 1001
frameperiod.denominator : 30000
framelines : 525
VIDIOC_ENUMSTD(6)
index : 6
id : 0xff0000
[SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
name : "SECAM"
frameperiod.numerator : 1
frameperiod.denominator : 25
framelines : 625

inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Television"
type : TUNER
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x102 [NO_SIGNAL,NO_H_LOCK]
VIDIOC_ENUMINPUT(1)
index : 1
name : "Composite1"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
VIDIOC_ENUMINPUT(2)
index : 2
name : "S-Video"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []
VIDIOC_ENUMINPUT(3)
index : 3
name : "Composite3"
type : CAMERA
audioset : 1
tuner : 0
std : 0xffbfff
[PAL_B,PAL_B1,PAL_G,PAL_H,PAL_I,PAL_D,PAL_D1,PAL_K,PAL_M,PAL_N,PAL_Nc,PAL_60,NTSC_M,NTSC_M_JP,?,SECAM_B,SECAM_D,SECAM_G,SECAM_H,SECAM_K,SECAM_K1,SECAM_L,?ATSC_8_VSB]
status : 0x0 []

tuners
VIDIOC_G_TUNER(0)
index : 0
name : "Television"
type : ANALOG_TV
capability : 0x2 [NORM]
rangelow : 704
rangehigh : 15328
rxsubchans : 0x1 [MONO]
audmode : MONO
signal : 0
afc : 0

video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 0
description : "8 bpp, gray"
pixelformat : 0x59455247 [GREY]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "8 bpp, dithered color"
pixelformat : 0x34324948 [HI24]
VIDIOC_ENUM_FMT(2,VIDEO_CAPTURE)
index : 2
type : VIDEO_CAPTURE
flags : 0
description : "15 bpp RGB, le"
pixelformat : 0x4f424752 [RGBO]
VIDIOC_ENUM_FMT(3,VIDEO_CAPTURE)
index : 3
type : VIDEO_CAPTURE
flags : 0
description : "15 bpp RGB, be"
pixelformat : 0x51424752 [RGBQ]
VIDIOC_ENUM_FMT(4,VIDEO_CAPTURE)
index : 4
type : VIDEO_CAPTURE
flags : 0
description : "16 bpp RGB, le"
pixelformat : 0x50424752 [RGBP]
VIDIOC_ENUM_FMT(5,VIDEO_CAPTURE)
index : 5
type : VIDEO_CAPTURE
flags : 0
description : "16 bpp RGB, be"
pixelformat : 0x52424752 [RGBR]
VIDIOC_ENUM_FMT(6,VIDEO_CAPTURE)
index : 6
type : VIDEO_CAPTURE
flags : 0
description : "24 bpp RGB, le"
pixelformat : 0x33524742 [BGR3]
VIDIOC_ENUM_FMT(7,VIDEO_CAPTURE)
index : 7
type : VIDEO_CAPTURE
flags : 0
description : "32 bpp RGB, le"
pixelformat : 0x34524742 [BGR4]
VIDIOC_ENUM_FMT(8,VIDEO_CAPTURE)
index : 8
type : VIDEO_CAPTURE
flags : 0
description : "32 bpp RGB, be"
pixelformat : 0x34424752 [RGB4]
VIDIOC_ENUM_FMT(9,VIDEO_CAPTURE)
index : 9
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2, packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(10,VIDEO_CAPTURE)
index : 10
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2, packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(11,VIDEO_CAPTURE)
index : 11
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2, packed, UYVY"
pixelformat : 0x59565955 [UYVY]
VIDIOC_ENUM_FMT(12,VIDEO_CAPTURE)
index : 12
type : VIDEO_CAPTURE
flags : 0
description : "4:2:2, planar, Y-Cb-Cr"
pixelformat : 0x50323234 [422P]
VIDIOC_ENUM_FMT(13,VIDEO_CAPTURE)
index : 13
type : VIDEO_CAPTURE
flags : 0
description : "4:2:0, planar, Y-Cb-Cr"
pixelformat : 0x32315559 [YU12]
VIDIOC_ENUM_FMT(14,VIDEO_CAPTURE)
index : 14
type : VIDEO_CAPTURE
flags : 0
description : "4:2:0, planar, Y-Cr-Cb"
pixelformat : 0x32315659 [YV12]
VIDIOC_ENUM_FMT(15,VIDEO_CAPTURE)
index : 15
type : VIDEO_CAPTURE
flags : 0
description : "4:1:1, planar, Y-Cb-Cr"
pixelformat : 0x50313134 [411P]
VIDIOC_ENUM_FMT(16,VIDEO_CAPTURE)
index : 16
type : VIDEO_CAPTURE
flags : 0
description : "4:1:0, planar, Y-Cb-Cr"
pixelformat : 0x39565559 [YUV9]
VIDIOC_ENUM_FMT(17,VIDEO_CAPTURE)
index : 17
type : VIDEO_CAPTURE
flags : 0
description : "4:1:0, planar, Y-Cr-Cb"
pixelformat : 0x39555659 [YVU9]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 320
fmt.pix.height : 240
fmt.pix.pixelformat : 0x59565955 [UYVY]
fmt.pix.field : INTERLACED
fmt.pix.bytesperline : 640
fmt.pix.sizeimage : 153600
fmt.pix.colorspace : unknown
fmt.pix.priv : 0

video overlay
VIDIOC_ENUM_FMT(0,VIDEO_OVERLAY)
index : 0
type : VIDEO_OVERLAY
flags : 0
description : "8 bpp, gray"
pixelformat : 0x59455247 [GREY]
VIDIOC_ENUM_FMT(1,VIDEO_OVERLAY)
index : 1
type : VIDEO_OVERLAY
flags : 0
description : "8 bpp, dithered color"
pixelformat : 0x34324948 [HI24]
VIDIOC_ENUM_FMT(2,VIDEO_OVERLAY)
index : 2
type : VIDEO_OVERLAY
flags : 0
description : "15 bpp RGB, le"
pixelformat : 0x4f424752 [RGBO]
VIDIOC_ENUM_FMT(3,VIDEO_OVERLAY)
index : 3
type : VIDEO_OVERLAY
flags : 0
description : "15 bpp RGB, be"
pixelformat : 0x51424752 [RGBQ]
VIDIOC_ENUM_FMT(4,VIDEO_OVERLAY)
index : 4
type : VIDEO_OVERLAY
flags : 0
description : "16 bpp RGB, le"
pixelformat : 0x50424752 [RGBP]
VIDIOC_ENUM_FMT(5,VIDEO_OVERLAY)
index : 5
type : VIDEO_OVERLAY
flags : 0
description : "16 bpp RGB, be"
pixelformat : 0x52424752 [RGBR]
VIDIOC_ENUM_FMT(6,VIDEO_OVERLAY)
index : 6
type : VIDEO_OVERLAY
flags : 0
description : "24 bpp RGB, le"
pixelformat : 0x33524742 [BGR3]
VIDIOC_ENUM_FMT(7,VIDEO_OVERLAY)
index : 7
type : VIDEO_OVERLAY
flags : 0
description : "32 bpp RGB, le"
pixelformat : 0x34524742 [BGR4]
VIDIOC_ENUM_FMT(8,VIDEO_OVERLAY)
index : 8
type : VIDEO_OVERLAY
flags : 0
description : "32 bpp RGB, be"
pixelformat : 0x34424752 [RGB4]
VIDIOC_ENUM_FMT(9,VIDEO_OVERLAY)
index : 9
type : VIDEO_OVERLAY
flags : 0
description : "4:2:2, packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(10,VIDEO_OVERLAY)
index : 10
type : VIDEO_OVERLAY
flags : 0
description : "4:2:2, packed, YUYV"
pixelformat : 0x56595559 [YUYV]
VIDIOC_ENUM_FMT(11,VIDEO_OVERLAY)
index : 11
type : VIDEO_OVERLAY
flags : 0
description : "4:2:2, packed, UYVY"
pixelformat : 0x59565955 [UYVY]
VIDIOC_G_FMT(VIDEO_OVERLAY)
type : VIDEO_OVERLAY
fmt.win.w.left : 0
fmt.win.w.top : 0
fmt.win.w.width : 320
fmt.win.w.height : 240
fmt.win.field : ANY
fmt.win.chromakey : 0
fmt.win.clips : (nil)
fmt.win.clipcount : 0
fmt.win.bitmap : (nil)
VIDIOC_G_FBUF
capability : 0x4 [LIST_CLIPPING]
flags : 0x0 []
base : (nil)
fmt.width : 0
fmt.height : 0
fmt.pixelformat : 0x59565955 [UYVY]
fmt.field : ANY
fmt.bytesperline : 0
fmt.sizeimage : 0
fmt.colorspace : unknown
fmt.priv : 0

vbi capture
VIDIOC_ENUM_FMT(0,VBI_CAPTURE)
index : 0
type : VBI_CAPTURE
flags : 0
description : "vbi data"
pixelformat : 0x59455247 [GREY]
VIDIOC_G_FMT(VBI_CAPTURE)
type : VBI_CAPTURE
fmt.vbi.sampling_rate : 35468950
fmt.vbi.offset : 244
fmt.vbi.samples_per_line: 2048
fmt.vbi.sample_format : 0x59455247 [GREY]
fmt.vbi.start[0] : 7
fmt.vbi.start[1] : 320
fmt.vbi.count[0] : 16
fmt.vbi.count[1] : 16
fmt.vbi.flags : 0

controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 65535
step : 256
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 65535
step : 128
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 65535
step : 128
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+3)
id : 9963779
type : INTEGER
name : "Hue"
minimum : 0
maximum : 65535
step : 256
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+6)
id : 9963782
type : INTEGER
name : "Balance"
minimum : 0
maximum : 65535
step : 655
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+7)
id : 9963783
type : INTEGER
name : "Bass"
minimum : 0
maximum : 65535
step : 655
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+8)
id : 9963784
type : INTEGER
name : "Treble"
minimum : 0
maximum : 65535
step : 655
default_value : 32768
flags : 0
VIDIOC_QUERYCTRL(BASE+9)
id : 9963785
type : BOOLEAN
name : "Mute"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+0)
id : 134217728
type : BOOLEAN
name : "chroma agc"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+1)
id : 134217729
type : BOOLEAN
name : "combfilter"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+2)
id : 134217730
type : BOOLEAN
name : "automute"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+3)
id : 134217731
type : BOOLEAN
name : "luma decimation filter"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+4)
id : 134217732
type : BOOLEAN
name : "agc crush"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+5)
id : 134217733
type : BOOLEAN
name : "vcr hack"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+6)
id : 134217734
type : INTEGER
name : "whitecrush upper"
minimum : 0
maximum : 255
step : 1
default_value : 207
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+7)
id : 134217735
type : INTEGER
name : "whitecrush lower"
minimum : 0
maximum : 255
step : 1
default_value : 127
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+8)
id : 134217736
type : INTEGER
name : "uv ratio"
minimum : 0
maximum : 100
step : 1
default_value : 50
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+9)
id : 134217737
type : BOOLEAN
name : "full luma range"
minimum : 0
maximum : 1
step : 0
default_value : 0
flags : 0
VIDIOC_QUERYCTRL(PRIVATE_BASE+10)
id : 134217738
type : INTEGER
name : "coring"
minimum : 0
maximum : 3
step : 1
default_value : 0
flags : 0

### video4linux device info [/dev/video] ###
general info
VIDIOCGCAP
name : "BT878 video (Lifeview FlyVideo "
type : 0x2f
[CAPTURE,TUNER,TELETEXT,OVERLAY,CLIPPING]
channels : 4
audios : 0
maxwidth : 924
maxheight : 576
minwidth : 48
minheight : 32

channels
VIDIOCGCHAN(0)
channel : 0
name : "Television"
tuners : 1
flags : 0x1 [TUNER]
type : TV
norm : 0
VIDIOCGCHAN(1)
channel : 1
name : "Composite1"
tuners : 0
flags : 0x0 []
type : CAMERA
norm : 0
VIDIOCGCHAN(2)
channel : 2
name : "S-Video"
tuners : 0
flags : 0x0 []
type : CAMERA
norm : 0
VIDIOCGCHAN(3)
channel : 3
name : "Composite3"
tuners : 0
flags : 0x0 []
type : CAMERA
norm : 0

tuner
VIDIOCGTUNER
tuner : 0
name : "Television"
rangelow : 0
rangehigh : 704
flags : 0x0 []
mode : unknown
signal : 0

audio
VIDIOCGAUDIO
audio : 0
volume : 0
bass : 0
treble : 0

picture
VIDIOCGPICT
brightness : 32768
hue : 32768
colour : 32768
contrast : 32768
whiteness : 0
depth : 16
palette : UYVY

buffer
VIDIOCGFBUF
base : (nil)
height : 0
width : 0
depth : 0
bytesperline : 0

window
VIDIOCGWIN
x : 0
y : 0
width : 320
height : 240
chromakey : 0
flags : 0

Attachment: config.gz
Description: GNU Zip compressed data

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