New input plugin for catching streams

 Hi xine team,

I would like contribute new input plugin which grabs streams as go from input 
plugins - rip input plugin. It was tested with several input plugins and 
demuxers, all combinations (except reading files via CDDA...):

  a) input plugins
    FILE, FIFO, STDIN, HTTP, GNOME_VFS(samba), CDDA (with patched CDDA demuxer 
which enables handling non-seekable streams)
  b) demuxers
    FLI, ASF, MPEG_PES, MPEG_ELEM, CDDA (with rip returning always size of 
block 2352), SLAVE
  c) and also MMS+ASF

Activation is by config option. Catching streams on command line can be:

  xine -p cfg:/input.ripping:1 <stream MRL>

'input.ripping' config option resets back to 0 after using RIP input plugin. I 
agree that using config option is dirty hack, I don't know how to work better 
with stream-related options.

How it works:
Engine, before testing all input plugins, tests 'input.ripping' config option. 
If it isn't set, call find_input_plugins(). If it's set, will be used RIP 
plugin. RIP plugin call self find_input_plugins(). All requests are resend into 
found input plugin, except seeking. Seeking is disabled, seeking forward and 
preview are implemented. Because of preview first block from input plugin is 
always replaced by new allocated block ==> no flags in the first buffer won't 
deliver.

Possible problems:
DVD? It wasn't tested...

Legal issue:
There was something about legal issue on this list about catching streams. I 
think it depends on user what he want to do with data in his computer: Save it? 
Or decode and send into speakers? And user should know what he may and what 
not. But I'm not jurist...

This plugin can be good for developing and for testing (see test.sh for 
inspiration) - it saves directly what return input plugins. If you like this 
new plugin, use it. Can be something improved?

  Frantisek Dvorak

PS: During testing I found interesting thing: MPEG is recognized with 
fifo://... but not with stdin://. Forcing by '#demux:mpeg_pes' always works.


--
xena: warrior princess





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ripping.diff
Description: ripping.diff

cdda.diff
Description: cdda.diff

test.sh
Description: test.sh