Wonder if it's time to bring back the Yeechang branch of Mythtv on ATrpms and integrate some patches not necessarily accepted by the devs.
:-) /Brian/ ---------- Forwarded message ---------- From: Lawrence Rust <l...@softsystem.co.uk> Date: Sun, Nov 27, 2011 at 7:52 AM Subject: [mythtv-users] Playback of encrypted dvd iso images from storage group To: mythtv-...@mythtv.org, mythtv-us...@mythtv.org Hi, I use my Myth box to, amongst other things, play and archive DVDs. For this reason, back in May I presented a patch to reinstate the ripping of DVD ISO images and the myth transcode daemon: http://www.mythtv.org/pipermail/mythtv-dev/2011-May/070839.html This had limited appeal, partly because the ripped images are encrypted and thus can't be played back from a storage group using the myth wire protocol. I had a flash of inspiration a few weeks ago and realised that it would be possible to read the raw iso image blocks on the BE using libdvdreader which would then use libdvdcss, if available, and send them to the FE in decrypted form. For iso images I replaced the current FileRingBuffer with a class that uses libdvdread to decrypt the raw blocks. The real heart of the change is in creating a list of blocks that need decrypting and then in safe_read() lookup the blocks requested in that list and decrypt them if necessary. The lookup is necessary since, if a block is unencrypted like ifo files, the decryption operation corrupts the data. I've been using the patch for a couple of weeks now on fixes/0.24.1. So if anyone else would like to try the patch for current git fixes/0.24.1: http://www.softsystem.co.uk/download/mythtv/fixes024-dvd-iso-image.patch or for current git master: http://www.softsystem.co.uk/download/mythtv/master-dvd-iso-image.patch I'm well aware that several devs have publicly criticised my contributions (NIH is a wonderful virtue), and that anything to do with media copying, ripping and decryption is taboo, so it's pointless submitting these patches to Trac. If you're using my mythbuild.sh script to build or cross compile MythTV from sources on Linux or Windows (www.softsystem.co.uk/mythtv/index.htm) then these patches, together with the patch to add DVD ripping, are included in the latest patch set which is downloaded automatically by mythbuild.sh. NB if you have an existing mythpatches-0.24 folder then delete that first to get an update. Comments and suggestions welcome. -- Lawrence _______________________________________________ mythtv-users mailing list mythtv-us...@mythtv.org http://www.mythtv.org/mailman/listinfo/mythtv-users _______________________________________________ atrpms-devel mailing list atrpms-devel@atrpms.net http://lists.atrpms.net/mailman/listinfo/atrpms-devel