[xine-devel] audio_crash_fix

[Torsten J. <t....@gm...>]

Hallo Dominique!

Try this, should work with the file I sent to you again.
At least it does here.

2Mo samples are fine, play sound without that nasty ripping hack :-)

Hallo everyone!

Audio decoder loop creates a sorted map of available audio channels
on the fly. If neither user nor dvdnav intervene, it will pass the
first (= lowest index) audio channel to decoders.

Now imagine a TV recording with 2 audio channels:

audio.0: eac3 5.1 (fra)
audio.1: eac3 stereo (qaa)

By chance, first audio frame to be demuxed is for channel #1.
Track map will be

[0]: eac3, channel 1

Audio loop opens ffmpeg audio decoder / stereo out. Fine.

Then, first frame for channel #0 comes in.

[0]: eac3, channel 0
[1]: eac3, channel 1

Both are same codec, so audio loop just switches to channel 0
without further notice. Audio decoder then runs into a mem leak,
or worse, crashes audio out who still thinks we're only stereo.

My fix:
Whenever we insert something at track map index 0, and
its going to be auto-selected later, reset current codec type.
This forces a clean decoder/output switch.

Torsten Jager

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