so that it can be used by other part of the code


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calls decode_rbsp_trailing() and therefore bit_length might get negative.
Although the remaining code is able to handle a negative bit_length, avoid
the calculation at all by setting bit_length to 0 for dst_length == 0.
patch by Reinhard Nissl, rnissl gmx de


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@8690 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Consider the following byte sequence

    00 00 01 0a 00 00 00 01 09 ...
               ^  ^
               A  B

decode_nal() determines dst_length to be 1 (i. e. the byte between label
A and B above). However, this byte is a trailing zero byte as the spec
says the the current NAL unit is terminated by a byte sequence 00 00 00.

The current code used a loop to decrement dst_length accordingly. But the
loop doesn't start as the loop condition checks for dst_length > 1, which
should read dst_length > 0.
patch by Reinhard Nissl, rnissl gmx de


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i.e. the four bytes 00 00 01 0a.
When decode_nal() decodes the end of sequence NAL unit, it returns with
dst_length == 0. The original code leads to a return -1 which discards
the current properly decoded frame.
patch by Reinhard Nissl, rnissl gmx de


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@8688 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

patch by Nicholas Tung, ntung ntung com


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@8687 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

and have no prototype in a header file static.
patch by Stefan Huehner, stefan huehner org


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enabled.  Also fixes some "defined but not used" warnings in that case.


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patch by Marco Gerards, mgerards xs4all nl


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shorter and correcter (its not the number of anything)


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5% smaller adpcm.o
20% faster


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patch by Anssi Hannula, anssi.hannula gmail com


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