[Mplayer-dvb] [PATCH] Dvb input and TS demuxer combo

[nico]

Hello,

this is a combo patch that:
1) adds an experimental TS demuxer to mplayer
2) adds an input (streaming) interface from DVB cards.

It compiles and runs with the following versions of the drivers: dvb-kernel (HEAD) (with stock kernel 2.4.20) and 0.9.4 (with kernel 2.4.18)
It was reported to work with Metzlerbros' drivers, but I didn't test them. 

A note about the TS demuxer: it's based on Xine's and FFmpeg's ones, it's very experimental, 
and some functions such as seeking are a little more than a joke, so it needs serious improvement; any volunteer?
In particular I want to add support for teletext and subtitles. Actually  it should be enough for streaming from DVB; 
It can accept an option: 
-tsfastparse 1
which  disables accurate searching of the streams, and in some rare case (such as small files piped to mplayer) might be necessary;
furthermore -vid and -aid have been raised to 8192.
I couldn't test this demuxer with a stream containing A52 audio, so if you have some sample, please send me a link.


About the DVB interface:
I made a major cleanup and added the option to record directly in a compressed format (such as mpeg1 / 4);
e.g.:
# mencoder -dvbin on=1:prog=C5 -oac copy -vop pp=ci:c -ovc lavc -lavcopts vcodec=mpeg1video:vhq:vbitrate=1150:aspect=4/3 -o x.avi -
notice that you still need to add - at the end, or mencoder will quit immediately.
You can use any codec and filter you want.

For watching TV you can use the same syntax:
mplayer -dvbin on=1:prog=R2
where R2 is a program defined in your ~/.mplayer/channels.conf, which has the same syntax as szap and VDR for DVB-S 
and the same for tzap in the case of DVB-T.
You can specify with card type you have with  the option "type" (SAT or TER), and which card number with "card" (from 1 to 4).
Default is type=SAT:card01.

Support for DVB-T is analogous, but totally untested: I used dvbstream's code that usually works well, so where dvbstream works 
this patch  should run too.
The command-line syntax for DVB-T parameters is a shortened version of the same parameters in channels.conf,
e.g.: :gi=32 stands for GUARD_INTERVAL_1_32 and so on. 
Read  libmpdemux/dvbin.c  and cfg-common.h   for a complete list.

I also removed some previous dependency from ts2ps and streaming_ctrl. The system-load should be lower and the visualization more reliable.

The rest remains the same: h= channel up, k=channel down. 
The lock-up in the case of a scrambled channel still remains, too. I'd like to know what to do in this case 
(tight loop when reading from the stream when filling the buffer).

This demuxer as a strange feature: the first few seconds (3 or 4) usually are out of sync, but short after the synchrony fixes.

All the other parameters remain the same.

Have fun, and please report if it works or not (remember to run mplayer with -v and send me the log).

Thanks to all the authors from whom I took the code (xine, dvbstream, ffmpeg).

		Nico

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