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Patch by Lou Logan. 


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6 insns less on x86-64/gcc 4.2.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@22692 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Fixes crash when avcodec_close() tried freeing it again.
Fixes issue 1846.

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Gives more consistent inlining with some compilers (such as llvm).


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loop of ff_probe_input_buffer(), making sure that probe_size is always
set to probe_max_size in the last iteration.

Also make the function return an error if we get to the max probe
length and still cannot figure out what the format is.

Patch by Micah Galizia micahgalizia A gmail D com.

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Still hardcoded to use Basic auth, without parsing the reply headers


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AVERROR_PATCHWELCOME in case of invalid / unsupported number of
channels specified, rather than return AVERROR_NOTSUPP.

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AVERROR(-1) = 1.

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libavformat/nutdec.c: In function ‘read_seek’:
libavformat/nutdec.c:862: warning: passing argument 4 of ‘av_tree_find’ from incompatible pointer type
./libavutil/tree.h:44: note: expected ‘void **’ but argument is of type ‘struct Syncpoint **’
libavformat/nutdec.c:871: warning: passing argument 4 of ‘av_tree_find’ from incompatible pointer type
./libavutil/tree.h:44: note: expected ‘void **’ but argument is of type ‘struct Syncpoint **’


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This prepares for adding support for more authentication methods


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libavformat/nut.c: In function ‘ff_nut_free_sp’:
libavformat/nut.c:80: warning: passing argument 4 of ‘av_tree_enumerate’ from incompatible pointer type
./libavutil/tree.h:92: note: expected ‘int (*)(void *, void *)’ but argument is of type ‘void (*)(void *, void *)’


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to share it with e.g. MMS.

Patch by Zhentan Feng <spyfeng gmail com>.



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