mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-28 14:44:10 +08:00
007ad83036
video : use the V4L2_STD macros to select the proper audio setting. radio : add preemphasis ctr. test it by the command: v4l2-ctl -d /dev/radio0 --set-ctrl=pre_emphasis_settings=1 [mchehab@redhat.com: folded documentation patch] Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
48 lines
1.1 KiB
Plaintext
48 lines
1.1 KiB
Plaintext
tlg2300 release notes
|
|
====================
|
|
|
|
This is a v4l2/dvb device driver for the tlg2300 chip.
|
|
|
|
|
|
current status
|
|
==============
|
|
|
|
video
|
|
- support mmap and read().(no overlay)
|
|
|
|
audio
|
|
- The driver will register a ALSA card for the audio input.
|
|
|
|
vbi
|
|
- Works for almost TV norms.
|
|
|
|
dvb-t
|
|
- works for DVB-T
|
|
|
|
FM
|
|
- Works for radio.
|
|
|
|
---------------------------------------------------------------------------
|
|
TESTED APPLICATIONS:
|
|
|
|
-VLC1.0.4 test the video and dvb. The GUI is friendly to use.
|
|
|
|
-Mplayer test the video.
|
|
|
|
-Mplayer test the FM. The mplayer should be compiled with --enable-radio and
|
|
--enable-radio-capture.
|
|
The command runs as this(The alsa audio registers to card 1):
|
|
#mplayer radio://103.7/capture/ -radio adevice=hw=1,0:arate=48000 \
|
|
-rawaudio rate=48000:channels=2
|
|
|
|
---------------------------------------------------------------------------
|
|
KNOWN PROBLEMS:
|
|
about preemphasis:
|
|
You can set the preemphasis for radio by the following command:
|
|
#v4l2-ctl -d /dev/radio0 --set-ctrl=pre_emphasis_settings=1
|
|
|
|
"pre_emphasis_settings=1" means that you select the 50us. If you want
|
|
to select the 75us, please use "pre_emphasis_settings=2"
|
|
|
|
|