media: vidtv.rst: update vidtv documentation
authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Thu, 19 Nov 2020 11:17:49 +0000 (12:17 +0100)
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Thu, 26 Nov 2020 07:05:24 +0000 (08:05 +0100)
Update the vidtv documentation with the relevant changes
after the last patches.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Documentation/driver-api/media/drivers/vidtv.rst

index edaceef..52c2017 100644 (file)
@@ -258,6 +258,42 @@ Using dvb-fe-tool
 The first step to check whether the demod loaded successfully is to run::
 
        $ dvb-fe-tool
+       Device Dummy demod for DVB-T/T2/C/S/S2 (/dev/dvb/adapter0/frontend0) capabilities:
+           CAN_FEC_1_2
+           CAN_FEC_2_3
+           CAN_FEC_3_4
+           CAN_FEC_4_5
+           CAN_FEC_5_6
+           CAN_FEC_6_7
+           CAN_FEC_7_8
+           CAN_FEC_8_9
+           CAN_FEC_AUTO
+           CAN_GUARD_INTERVAL_AUTO
+           CAN_HIERARCHY_AUTO
+           CAN_INVERSION_AUTO
+           CAN_QAM_16
+           CAN_QAM_32
+           CAN_QAM_64
+           CAN_QAM_128
+           CAN_QAM_256
+           CAN_QAM_AUTO
+           CAN_QPSK
+           CAN_TRANSMISSION_MODE_AUTO
+       DVB API Version 5.11, Current v5 delivery system: DVBC/ANNEX_A
+       Supported delivery systems:
+           DVBT
+           DVBT2
+           [DVBC/ANNEX_A]
+           DVBS
+           DVBS2
+       Frequency range for the current standard:
+       From:            51.0 MHz
+       To:              2.15 GHz
+       Step:            62.5 kHz
+       Tolerance:       29.5 MHz
+       Symbol rate ranges for the current standard:
+       From:            1.00 MBauds
+       To:              45.0 MBauds
 
 This should return what is currently set up at the demod struct, i.e.::
 
@@ -316,7 +352,7 @@ For this, one should provide a configuration file known as a 'scan file',
 here's an example::
 
        [Channel]
-       FREQUENCY = 330000000
+       FREQUENCY = 474000000
        MODULATION = QAM/AUTO
        SYMBOL_RATE = 6940000
        INNER_FEC = AUTO
@@ -337,6 +373,14 @@ You can browse scan tables online here: `dvb-scan-tables
 Assuming this channel is named 'channel.conf', you can then run::
 
        $ dvbv5-scan channel.conf
+       dvbv5-scan ~/vidtv.conf
+       ERROR    command BANDWIDTH_HZ (5) not found during retrieve
+       Cannot calc frequency shift. Either bandwidth/symbol-rate is unavailable (yet).
+       Scanning frequency #1 330000000
+           (0x00) Signal= -68.00dBm
+       Scanning frequency #2 474000000
+       Lock   (0x1f) Signal= -34.45dBm C/N= 33.74dB UCB= 0
+       Service Beethoven, provider LinuxTV.org: digital television
 
 For more information on dvb-scan, check its documentation online here:
 `dvb-scan Documentation <https://www.linuxtv.org/wiki/index.php/Dvbscan>`_.
@@ -346,23 +390,38 @@ Using dvb-zap
 
 dvbv5-zap is a command line tool that can be used to record MPEG-TS to disk. The
 typical use is to tune into a channel and put it into record mode. The example
-below - which is taken from the documentation - illustrates that::
+below - which is taken from the documentation - illustrates that\ [1]_::
 
-       $ dvbv5-zap -c dvb_channel.conf "trilhas sonoras" -r
-       using demux '/dev/dvb/adapter0/demux0'
+       $ dvbv5-zap -c dvb_channel.conf "beethoven" -o music.ts -P -t 10
+       using demux 'dvb0.demux0'
        reading channels from file 'dvb_channel.conf'
-       service has pid type 05:  204
-       tuning to 573000000 Hz
-       audio pid 104
-         dvb_set_pesfilter 104
-       Lock   (0x1f) Quality= Good Signal= 100.00% C/N= -13.80dB UCB= 70 postBER= 3.14x10^-3 PER= 0
-       DVR interface '/dev/dvb/adapter0/dvr0' can now be opened
+       tuning to 474000000 Hz
+       pass all PID's to TS
+       dvb_set_pesfilter 8192
+       dvb_dev_set_bufsize: buffer set to 6160384
+       Lock   (0x1f) Quality= Good Signal= -34.66dBm C/N= 33.41dB UCB= 0 postBER= 0 preBER= 1.05x10^-3 PER= 0
+       Lock   (0x1f) Quality= Good Signal= -34.57dBm C/N= 33.46dB UCB= 0 postBER= 0 preBER= 1.05x10^-3 PER= 0
+       Record to file 'music.ts' started
+       received 24587768 bytes (2401 Kbytes/sec)
+       Lock   (0x1f) Quality= Good Signal= -34.42dBm C/N= 33.89dB UCB= 0 postBER= 0 preBER= 2.44x10^-3 PER= 0
 
-The channel can be watched by playing the contents of the DVR interface, with
-some player that recognizes the MPEG-TS format, such as *mplayer* or *vlc*.
+.. [1] In this example, it records 10 seconds with all program ID's stored
+       at the music.ts file.
+
+
+The channel can be watched by playing the contents of the stream with some
+player that  recognizes the MPEG-TS format, such as ``mplayer`` or ``vlc``.
 
 By playing the contents of the stream one can visually inspect the workings of
-vidtv, e.g.::
+vidtv, e.g., to play a recorded TS file with::
+
+       $ mplayer music.ts
+
+or, alternatively, running this command on one terminal::
+
+       $ dvbv5-zap -c dvb_channel.conf "beethoven" -P -r &
+
+And, on a second terminal, playing the contents from DVR interface with::
 
        $ mplayer /dev/dvb/adapter0/dvr0