summaryrefslogtreecommitdiff
path: root/linux/Documentation/video4linux
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab@redhat.com>2009-03-12 11:10:42 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-12 11:10:42 -0300
commit7787613f5c5a3a00ebd6aca9893ef2c4ad679bc1 (patch)
tree4ffb8dbda509405c10b484edacb44807b16c5466 /linux/Documentation/video4linux
parent84c19b03d182a3ad1a04fa4be0772ef587225fe6 (diff)
parentd32bcc1401cca5f2ea369ce78ab70947034b5c8f (diff)
downloadmediapointer-dvb-s2-7787613f5c5a3a00ebd6aca9893ef2c4ad679bc1.tar.gz
mediapointer-dvb-s2-7787613f5c5a3a00ebd6aca9893ef2c4ad679bc1.tar.bz2
merge: http://jusst.de/hg/v4l-dvb
From: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'linux/Documentation/video4linux')
-rw-r--r--linux/Documentation/video4linux/CARDLIST.bttv4
-rw-r--r--linux/Documentation/video4linux/CARDLIST.cx238851
-rw-r--r--linux/Documentation/video4linux/CARDLIST.cx881
-rw-r--r--linux/Documentation/video4linux/CARDLIST.em28xx9
-rw-r--r--linux/Documentation/video4linux/CARDLIST.saa71342
-rw-r--r--linux/Documentation/video4linux/Zoran3
-rw-r--r--linux/Documentation/video4linux/bttv/Insmod-options10
-rw-r--r--linux/Documentation/video4linux/cx2341x/README.hm124
-rw-r--r--linux/Documentation/video4linux/gspca.txt3
-rw-r--r--linux/Documentation/video4linux/si470x.txt11
-rw-r--r--linux/Documentation/video4linux/v4l2-framework.txt138
11 files changed, 150 insertions, 36 deletions
diff --git a/linux/Documentation/video4linux/CARDLIST.bttv b/linux/Documentation/video4linux/CARDLIST.bttv
index 4dfe62641..e17750473 100644
--- a/linux/Documentation/video4linux/CARDLIST.bttv
+++ b/linux/Documentation/video4linux/CARDLIST.bttv
@@ -135,7 +135,7 @@
134 -> Adlink RTV24
135 -> DViCO FusionHDTV 5 Lite [18ac:d500]
136 -> Acorp Y878F [9511:1540]
-137 -> Conceptronic CTVFMi v2
+137 -> Conceptronic CTVFMi v2 [036e:109e]
138 -> Prolink Pixelview PV-BT878P+ (Rev.2E)
139 -> Prolink PixelView PlayTV MPEG2 PV-M4900
140 -> Osprey 440 [0070:ff07]
@@ -155,3 +155,5 @@
154 -> PHYTEC VD-012-X1 (bt878)
155 -> PHYTEC VD-012-X2 (bt878)
156 -> IVCE-8784 [0000:f050,0001:f050,0002:f050,0003:f050]
+157 -> Geovision GV-800(S) (master) [800a:763d]
+158 -> Geovision GV-800(S) (slave) [800b:763d,800c:763d,800d:763d]
diff --git a/linux/Documentation/video4linux/CARDLIST.cx23885 b/linux/Documentation/video4linux/CARDLIST.cx23885
index 5937ff958..91aa3c0f0 100644
--- a/linux/Documentation/video4linux/CARDLIST.cx23885
+++ b/linux/Documentation/video4linux/CARDLIST.cx23885
@@ -15,3 +15,4 @@
14 -> TurboSight TBS 6920 [6920:8888]
15 -> TeVii S470 [d470:9022]
16 -> DVBWorld DVB-S2 2005 [0001:2005]
+ 17 -> NetUP Dual DVB-S2 CI [1b55:2a2c]
diff --git a/linux/Documentation/video4linux/CARDLIST.cx88 b/linux/Documentation/video4linux/CARDLIST.cx88
index 0d08f1edc..71e9db0b2 100644
--- a/linux/Documentation/video4linux/CARDLIST.cx88
+++ b/linux/Documentation/video4linux/CARDLIST.cx88
@@ -77,3 +77,4 @@
76 -> SATTRADE ST4200 DVB-S/S2 [b200:4200]
77 -> TBS 8910 DVB-S [8910:8888]
78 -> Prof 6200 DVB-S [b022:3022]
+ 79 -> Terratec Cinergy HT PCI MKII [153b:1177]
diff --git a/linux/Documentation/video4linux/CARDLIST.em28xx b/linux/Documentation/video4linux/CARDLIST.em28xx
index 75bded8a4..78d0a6eed 100644
--- a/linux/Documentation/video4linux/CARDLIST.em28xx
+++ b/linux/Documentation/video4linux/CARDLIST.em28xx
@@ -7,12 +7,12 @@
6 -> Terratec Cinergy 200 USB (em2800)
7 -> Leadtek Winfast USB II (em2800) [0413:6023]
8 -> Kworld USB2800 (em2800)
- 9 -> Pinnacle Dazzle DVC 90/DVC 100 (em2820/em2840) [2304:0207,2304:021a]
+ 9 -> Pinnacle Dazzle DVC 90/100/101/107 / Kaiser Baas Video to DVD maker (em2820/em2840) [1b80:e302,2304:0207,2304:021a]
10 -> Hauppauge WinTV HVR 900 (em2880) [2040:6500]
11 -> Terratec Hybrid XS (em2880) [0ccd:0042]
12 -> Kworld PVR TV 2800 RF (em2820/em2840)
13 -> Terratec Prodigy XS (em2880) [0ccd:0047]
- 14 -> Pixelview Prolink PlayTV USB 2.0 (em2820/em2840)
+ 14 -> SIIG AVTuner-PVR / Pixelview Prolink PlayTV USB 2.0 (em2820/em2840)
15 -> V-Gear PocketTV (em2800)
16 -> Hauppauge WinTV HVR 950 (em2883) [2040:6513,2040:6517,2040:651b]
17 -> Pinnacle PCTV HD Pro Stick (em2880) [2304:0227]
@@ -30,7 +30,6 @@
30 -> Videology 20K14XUSB USB2.0 (em2820/em2840)
31 -> Usbgear VD204v9 (em2821)
32 -> Supercomp USB 2.0 TV (em2821)
- 33 -> SIIG AVTuner-PVR/Prolink PlayTV USB 2.0 (em2821)
34 -> Terratec Cinergy A Hybrid XS (em2860) [0ccd:004f]
35 -> Typhoon DVD Maker (em2860)
36 -> NetGMBH Cam (em2860)
@@ -58,3 +57,7 @@
58 -> Compro VideoMate ForYou/Stereo (em2820/em2840) [185b:2041]
60 -> Hauppauge WinTV HVR 850 (em2883) [2040:651f]
61 -> Pixelview PlayTV Box 4 USB 2.0 (em2820/em2840)
+ 62 -> Gadmei TVR200 (em2820/em2840)
+ 63 -> Kaiomy TVnPC U2 (em2860) [eb1a:e303]
+ 64 -> Easy Cap Capture DC-60 (em2860)
+ 65 -> IO-DATA GV-MVP/SZ (em2820/em2840) [04bb:0515]
diff --git a/linux/Documentation/video4linux/CARDLIST.saa7134 b/linux/Documentation/video4linux/CARDLIST.saa7134
index b8d470596..6dacf2825 100644
--- a/linux/Documentation/video4linux/CARDLIST.saa7134
+++ b/linux/Documentation/video4linux/CARDLIST.saa7134
@@ -153,3 +153,5 @@
152 -> Asus Tiger Rev:1.00 [1043:4857]
153 -> Kworld Plus TV Analog Lite PCI [17de:7128]
154 -> Avermedia AVerTV GO 007 FM Plus [1461:f31d]
+155 -> Hauppauge WinTV-HVR1120 ATSC/QAM-Hybrid [0070:6706,0070:6708]
+156 -> Hauppauge WinTV-HVR1110r3 [0070:6707,0070:6709,0070:670a]
diff --git a/linux/Documentation/video4linux/Zoran b/linux/Documentation/video4linux/Zoran
index 295462b23..0e89e7676 100644
--- a/linux/Documentation/video4linux/Zoran
+++ b/linux/Documentation/video4linux/Zoran
@@ -401,8 +401,7 @@ Additional notes for software developers:
first set the correct norm. Well, it seems logically correct: TV
standard is "more constant" for current country than geometry
settings of a variety of TV capture cards which may work in ITU or
- square pixel format. Remember that users now can lock the norm to
- avoid any ambiguity.
+ square pixel format.
--
Please note that lavplay/lavrec are also included in the MJPEG-tools
(http://mjpeg.sf.net/).
diff --git a/linux/Documentation/video4linux/bttv/Insmod-options b/linux/Documentation/video4linux/bttv/Insmod-options
index 5ef75787f..bbe3ed667 100644
--- a/linux/Documentation/video4linux/bttv/Insmod-options
+++ b/linux/Documentation/video4linux/bttv/Insmod-options
@@ -81,16 +81,6 @@ tuner.o
pal=[bdgil] select PAL variant (used for some tuners
only, important for the audio carrier).
-tvmixer.o
- registers a mixer device for the TV card's volume/bass/treble
- controls (requires a i2c audio control chip like the msp3400).
-
- insmod args:
- debug=1 print some debug info to the syslog.
- devnr=n allocate device #n (0 == /dev/mixer,
- 1 = /dev/mixer1, ...), default is to
- use the first free one.
-
tvaudio.o
new, experimental module which is supported to provide a single
driver for all simple i2c audio control chips (tda/tea*).
diff --git a/linux/Documentation/video4linux/cx2341x/README.hm12 b/linux/Documentation/video4linux/cx2341x/README.hm12
index 0e213ed09..b36148ea0 100644
--- a/linux/Documentation/video4linux/cx2341x/README.hm12
+++ b/linux/Documentation/video4linux/cx2341x/README.hm12
@@ -32,6 +32,10 @@ Y, U and V planes. This code assumes frames of 720x576 (PAL) pixels.
The width of a frame is always 720 pixels, regardless of the actual specified
width.
+If the height is not a multiple of 32 lines, then the captured video is
+missing macroblocks at the end and is unusable. So the height must be a
+multiple of 32.
+
--------------------------------------------------------------------------
#include <stdio.h>
diff --git a/linux/Documentation/video4linux/gspca.txt b/linux/Documentation/video4linux/gspca.txt
index 1c58a7630..12c8ff705 100644
--- a/linux/Documentation/video4linux/gspca.txt
+++ b/linux/Documentation/video4linux/gspca.txt
@@ -32,6 +32,7 @@ spca561 041e:403b Creative Webcam Vista (VF0010)
zc3xx 041e:4051 Creative Live!Cam Notebook Pro (VF0250)
ov519 041e:4052 Creative Live! VISTA IM
zc3xx 041e:4053 Creative Live!Cam Video IM
+vc032x 041e:405b Creative Live! Cam Notebook Ultra (VC0130)
ov519 041e:405f Creative Live! VISTA VF0330
ov519 041e:4060 Creative Live! VISTA VF0350
ov519 041e:4061 Creative Live! VISTA VF0400
@@ -193,6 +194,7 @@ spca500 084d:0003 D-Link DSC-350
spca500 08ca:0103 Aiptek PocketDV
sunplus 08ca:0104 Aiptek PocketDVII 1.3
sunplus 08ca:0106 Aiptek Pocket DV3100+
+mr97310a 08ca:0111 Aiptek PenCam VGA+
sunplus 08ca:2008 Aiptek Mini PenCam 2 M
sunplus 08ca:2010 Aiptek PocketCam 3M
sunplus 08ca:2016 Aiptek PocketCam 2 Mega
@@ -215,6 +217,7 @@ pac207 093a:2468 PAC207
pac207 093a:2470 Genius GF112
pac207 093a:2471 Genius VideoCam ge111
pac207 093a:2472 Genius VideoCam ge110
+pac207 093a:2474 Genius iLook 111
pac207 093a:2476 Genius e-Messenger 112
pac7311 093a:2600 PAC7311 Typhoon
pac7311 093a:2601 Philips SPC 610 NC
diff --git a/linux/Documentation/video4linux/si470x.txt b/linux/Documentation/video4linux/si470x.txt
index 49679e6aa..3a7823e01 100644
--- a/linux/Documentation/video4linux/si470x.txt
+++ b/linux/Documentation/video4linux/si470x.txt
@@ -1,6 +1,6 @@
Driver for USB radios for the Silicon Labs Si470x FM Radio Receivers
-Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net>
+Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
Information from Silicon Labs
@@ -41,7 +41,7 @@ chips are known to work:
- 10c4:818a: Silicon Labs USB FM Radio Reference Design
- 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF)
- 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700)
-- 10c5:819a: DealExtreme USB Radio
+- 10c5:819a: Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear)
Software
@@ -52,6 +52,7 @@ Testing is usually done with most application under Debian/testing:
- gradio - GTK FM radio tuner
- kradio - Comfortable Radio Application for KDE
- radio - ncurses-based radio application
+- mplayer - The Ultimate Movie Player For Linux
There is also a library libv4l, which can be used. It's going to have a function
for frequency seeking, either by using hardware functionality as in radio-si470x
@@ -69,7 +70,7 @@ Audio Listing
USB Audio is provided by the ALSA snd_usb_audio module. It is recommended to
also select SND_USB_AUDIO, as this is required to get sound from the radio. For
listing you have to redirect the sound, for example using one of the following
-commands.
+commands. Please adjust the audio devices to your needs (/dev/dsp* and hw:x,x).
If you just want to test audio (very poor quality):
cat /dev/dsp1 > /dev/dsp
@@ -80,6 +81,10 @@ sox -2 --endian little -r 96000 -t oss /dev/dsp1 -t oss /dev/dsp
If you use arts try:
arecord -D hw:1,0 -r96000 -c2 -f S16_LE | artsdsp aplay -B -
+If you use mplayer try:
+mplayer -radio adevice=hw=1.0:arate=96000 \
+ -rawaudio rate=96000 \
+ radio://<frequency>/capture
Module Parameters
=================
diff --git a/linux/Documentation/video4linux/v4l2-framework.txt b/linux/Documentation/video4linux/v4l2-framework.txt
index cc3506242..accc376e9 100644
--- a/linux/Documentation/video4linux/v4l2-framework.txt
+++ b/linux/Documentation/video4linux/v4l2-framework.txt
@@ -47,7 +47,9 @@ All drivers have the following structure:
3) Creating V4L2 device nodes (/dev/videoX, /dev/vbiX, /dev/radioX and
/dev/vtxX) and keeping track of device-node specific data.
-4) Filehandle-specific structs containing per-filehandle data.
+4) Filehandle-specific structs containing per-filehandle data;
+
+5) video buffer handling.
This is a rough schematic of how it all relates:
@@ -82,12 +84,14 @@ You must register the device instance:
v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev);
Registration will initialize the v4l2_device struct and link dev->driver_data
-to v4l2_dev. Registration will also set v4l2_dev->name to a value derived from
-dev (driver name followed by the bus_id, to be precise). You may change the
-name after registration if you want.
+to v4l2_dev. If v4l2_dev->name is empty then it will be set to a value derived
+from dev (driver name followed by the bus_id, to be precise). If you set it
+up before calling v4l2_device_register then it will be untouched. If dev is
+NULL, then you *must* setup v4l2_dev->name before calling v4l2_device_register.
The first 'dev' argument is normally the struct device pointer of a pci_dev,
-usb_device or platform_device.
+usb_device or platform_device. It is rare for dev to be NULL, but it happens
+with ISA devices, for example.
You unregister with:
@@ -134,7 +138,7 @@ The recommended approach is as follows:
static atomic_t drv_instance = ATOMIC_INIT(0);
-static int __devinit drv_probe(struct pci_dev *dev,
+static int __devinit drv_probe(struct pci_dev *pdev,
const struct pci_device_id *pci_id)
{
...
@@ -218,7 +222,7 @@ to add new ops and categories.
A sub-device driver initializes the v4l2_subdev struct using:
- v4l2_subdev_init(subdev, &ops);
+ v4l2_subdev_init(sd, &ops);
Afterwards you need to initialize subdev->name with a unique name and set the
module owner. This is done for you if you use the i2c helper functions.
@@ -226,7 +230,7 @@ module owner. This is done for you if you use the i2c helper functions.
A device (bridge) driver needs to register the v4l2_subdev with the
v4l2_device:
- int err = v4l2_device_register_subdev(device, subdev);
+ int err = v4l2_device_register_subdev(v4l2_dev, sd);
This can fail if the subdev module disappeared before it could be registered.
After this function was called successfully the subdev->dev field points to
@@ -234,17 +238,17 @@ the v4l2_device.
You can unregister a sub-device using:
- v4l2_device_unregister_subdev(subdev);
+ v4l2_device_unregister_subdev(sd);
-Afterwards the subdev module can be unloaded and subdev->dev == NULL.
+Afterwards the subdev module can be unloaded and sd->dev == NULL.
You can call an ops function either directly:
- err = subdev->ops->core->g_chip_ident(subdev, &chip);
+ err = sd->ops->core->g_chip_ident(sd, &chip);
but it is better and easier to use this macro:
- err = v4l2_subdev_call(subdev, core, g_chip_ident, &chip);
+ err = v4l2_subdev_call(sd, core, g_chip_ident, &chip);
The macro will to the right NULL pointer checks and returns -ENODEV if subdev
is NULL, -ENOIOCTLCMD if either subdev->core or subdev->core->g_chip_ident is
@@ -252,19 +256,19 @@ NULL, or the actual result of the subdev->ops->core->g_chip_ident ops.
It is also possible to call all or a subset of the sub-devices:
- v4l2_device_call_all(dev, 0, core, g_chip_ident, &chip);
+ v4l2_device_call_all(v4l2_dev, 0, core, g_chip_ident, &chip);
Any subdev that does not support this ops is skipped and error results are
ignored. If you want to check for errors use this:
- err = v4l2_device_call_until_err(dev, 0, core, g_chip_ident, &chip);
+ err = v4l2_device_call_until_err(v4l2_dev, 0, core, g_chip_ident, &chip);
Any error except -ENOIOCTLCMD will exit the loop with that error. If no
errors (except -ENOIOCTLCMD) occured, then 0 is returned.
The second argument to both calls is a group ID. If 0, then all subdevs are
called. If non-zero, then only those whose group ID match that value will
-be called. Before a bridge driver registers a subdev it can set subdev->grp_id
+be called. Before a bridge driver registers a subdev it can set sd->grp_id
to whatever value it wants (it's 0 by default). This value is owned by the
bridge driver and the sub-device driver will never modify or use it.
@@ -505,8 +509,8 @@ There are a few useful helper functions:
You can set/get driver private data in the video_device struct using:
-void *video_get_drvdata(struct video_device *dev);
-void video_set_drvdata(struct video_device *dev, void *data);
+void *video_get_drvdata(struct video_device *vdev);
+void video_set_drvdata(struct video_device *vdev, void *data);
Note that you can safely call video_set_drvdata() before calling
video_register_device().
@@ -525,3 +529,103 @@ void *video_drvdata(struct file *file);
You can go from a video_device struct to the v4l2_device struct using:
struct v4l2_device *v4l2_dev = vdev->v4l2_dev;
+
+video buffer helper functions
+-----------------------------
+
+The v4l2 core API provides a standard method for dealing with video
+buffers. Those methods allow a driver to implement read(), mmap() and
+overlay() on a consistent way.
+
+There are currently methods for using video buffers on devices that
+supports DMA with scatter/gather method (videobuf-dma-sg), DMA with
+linear access (videobuf-dma-contig), and vmalloced buffers, mostly
+used on USB drivers (videobuf-vmalloc).
+
+Any driver using videobuf should provide operations (callbacks) for
+four handlers:
+
+ops->buf_setup - calculates the size of the video buffers and avoid they
+ to waste more than some maximum limit of RAM;
+ops->buf_prepare - fills the video buffer structs and calls
+ videobuf_iolock() to alloc and prepare mmaped memory;
+ops->buf_queue - advices the driver that another buffer were
+ requested (by read() or by QBUF);
+ops->buf_release - frees any buffer that were allocated.
+
+In order to use it, the driver need to have a code (generally called at
+interrupt context) that will properly handle the buffer request lists,
+announcing that a new buffer were filled.
+
+The irq handling code should handle the videobuf task lists, in order
+to advice videobuf that a new frame were filled, in order to honor to a
+request. The code is generally like this one:
+ if (list_empty(&dma_q->active))
+ return;
+
+ buf = list_entry(dma_q->active.next, struct vbuffer, vb.queue);
+
+ if (!waitqueue_active(&buf->vb.done))
+ return;
+
+ /* Some logic to handle the buf may be needed here */
+
+ list_del(&buf->vb.queue);
+ do_gettimeofday(&buf->vb.ts);
+ wake_up(&buf->vb.done);
+
+Those are the videobuffer functions used on drivers, implemented on
+videobuf-core:
+
+- Videobuf init functions
+ videobuf_queue_sg_init()
+ Initializes the videobuf infrastructure. This function should be
+ called before any other videobuf function on drivers that uses DMA
+ Scatter/Gather buffers.
+
+ videobuf_queue_dma_contig_init
+ Initializes the videobuf infrastructure. This function should be
+ called before any other videobuf function on drivers that need DMA
+ contiguous buffers.
+
+ videobuf_queue_vmalloc_init()
+ Initializes the videobuf infrastructure. This function should be
+ called before any other videobuf function on USB (and other drivers)
+ that need a vmalloced type of videobuf.
+
+- videobuf_iolock()
+ Prepares the videobuf memory for the proper method (read, mmap, overlay).
+
+- videobuf_queue_is_busy()
+ Checks if a videobuf is streaming.
+
+- videobuf_queue_cancel()
+ Stops video handling.
+
+- videobuf_mmap_free()
+ frees mmap buffers.
+
+- videobuf_stop()
+ Stops video handling, ends mmap and frees mmap and other buffers.
+
+- V4L2 api functions. Those functions correspond to VIDIOC_foo ioctls:
+ videobuf_reqbufs(), videobuf_querybuf(), videobuf_qbuf(),
+ videobuf_dqbuf(), videobuf_streamon(), videobuf_streamoff().
+
+- V4L1 api function (corresponds to VIDIOCMBUF ioctl):
+ videobuf_cgmbuf()
+ This function is used to provide backward compatibility with V4L1
+ API.
+
+- Some help functions for read()/poll() operations:
+ videobuf_read_stream()
+ For continuous stream read()
+ videobuf_read_one()
+ For snapshot read()
+ videobuf_poll_stream()
+ polling help function
+
+The better way to understand it is to take a look at vivi driver. One
+of the main reasons for vivi is to be a videobuf usage example. the
+vivi_thread_tick() does the task that the IRQ callback would do on PCI
+drivers (or the irq callback on USB).