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Prevent division and multiplication by zero errors in native code
after mpeg video seek caused by type truncation.
Signed-off-by: Xerxes Rånby <[email protected]>
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upcoming version (master branch)
We need native structure access methods to deal with API changes
in the libav headers, which break binary compatibility!
Currently we are binary compatible w/ [0.6 ?, ] 0.7 and 0.8 but not w/ trunk.
Tested: Linux, Windows and OSX (self compiled binary)
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The Java classes already slipped through in
commit 10935e1ec0d8ed677bc3fddfaa8cd73898a3bcbf - oops.
Since we cannot provide a Libav binary (even though Google does in Android and Chrome)
due to legal uncertainities .. we dynamically link to an existing Libav / FFmpeg library
in a 'relaxed' manner. Ie. we allow certain recent functions to be absent to be able
to run on a wider range of Libav versions.
Currently tested on Debian Linux and Windows7 64bit/32bit
Binaries for Win/OSX:
- Windows http://ffmpeg.zeranoe.com/builds/
- OSX http://www.ffmpegx.com/
Features:
- Dynamic relaxed linking to Libav (see above)
- YUV420P texture lookup function shader stub (conversion to RGB)
- 1-copy only (decoder buffer to texture)
- simple
- uses libavformat's network streaming
- fixes some odd PTS values
TODO:
- Audio output (Should use OpenAL, duh)
- Seek works poorly
- Offthread multi-texture fetching for smoother animation
- Maybe more pixelformat conversions
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