The zlib related code should not be compiled in when the decoder is disabled
and it thus will never be used, even if we have zlib available.


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of having it do its own inefficient fixed-point YUV to RGB conversion.


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temporary buffer and then using put_bits to copy the data over.


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if zlib is not available.


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Allows an application to register a callback that manages mutexes
on behalf of FFmpeg.
With this callback registered FFmpeg is fully thread safe.



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fix 3gp metadata, write strings in UTF8, patch by Larbi Joubala, larbi dot joubala at resonate-mp4 dot com

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Reading above src[-2] isn't safe, so move loads and palignr ahead
3 pixels to load starting at the first pixel actually used.

Fixes issue941.


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Patch by Daniel Verkamp $firstname@drv DOT nu.


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Fixes issue1132


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