Revert r18454 and fix correctly #700
Stop parsing if end of buffer is reached while reading
patch by Björn Axelsson, bjorn dot axelsson at intinor dot se

Originally committed as revision 18455 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18454 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18453 to svn://svn.ffmpeg.org/ffmpeg/trunk

Behaviour only changes if pkt->destuct neither av_destruct_packet,
av_destruct_packet_nofree nor NULL, in which case the new code avoids a double free.

Originally committed as revision 18452 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Thilo Borgmann thilo.surname AT googlemaildotcom.

Originally committed as revision 18451 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18450 to svn://svn.ffmpeg.org/ffmpeg/trunk

the output buffer size may be less than FF_MIN_BUFFER_SIZE.

Patch by John Fletcher john.surname AT rd . bbc . co . uk.

Originally committed as revision 18449 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18448 to svn://svn.ffmpeg.org/ffmpeg/trunk

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This is consistent with other demuxer's behaviour and avoids a memleak.
It also returns the error from av_get_packet instead of always AVERROR(EIO).

Originally committed as revision 18446 to svn://svn.ffmpeg.org/ffmpeg/trunk

calculate it.

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a buffer first.

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'terminate_string'.

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It is still used in comparisons to keep ABI compatibility.

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behaviour of av_get_packet and should not be override without good reason.
As a side effect this fixes the memleak described in issue 956.
Also return the exact error code from av_get_packet instead of AVERROR(EIO).

Originally committed as revision 18428 to svn://svn.ffmpeg.org/ffmpeg/trunk

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not disabled.

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Originally committed as revision 18422 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Thilo Borgmann thilo DOT borgmann A googlemail com.

Originally committed as revision 18421 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18420 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18419 to svn://svn.ffmpeg.org/ffmpeg/trunk

contexts, this avoids a crash when freeing the H.264 parser context introduced in
r18406, since h->s.avctx is NULL there.

Originally committed as revision 18418 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Thilo Borgmann th_lo.borgm_n_@goog_email.co_.

Originally committed as revision 18417 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 18416 to svn://svn.ffmpeg.org/ffmpeg/trunk