MJPEG Tools Svn

AMD64 fixes from gert dot vervoort at hccnet dot nl

This commit was manufactured by cvs2svn to create tag
'PRE_BACKMERGE_MPEG_DEVEL'.

This commit was manufactured by cvs2svn to create tag
'LAST_MPEG_DEVEL_MERGE'.

intsamesign() in fastintfns.h was broken for negative y values. The only
module which uses that function is quantize_ref.c so put a correct version in
that file and remove it from fastintfns.h

quicktime_read_audio() came up undefined when using the CVS version of
libquicktime (it is an obsolete function the libquicktime folks want to
get rid of as soon as possible). After asking on the libquicktime mailinglist
the replacement for quicktime_read_audio() is lqt_decode_audio_track().
A similar function exists for writing audio (lqt_encode_audio_track).
One VERY important and useful side effect of using the lqt_{encode|decode}_audio_track
routines is that they handle the endianness of the data - the underlying
libquickime routines know about flipping the bytes and thus that logic can
disappear from lav_io.c

Fixed buffer size (tempfile[256]) could overflow if a long pathname was
passed. strdup() was used for the filename itself so malloc the tempfile
name as well!

is_MJPG was very carefully set and cleared - but then NEVER used.

Only 1 use of lav_filetype() left - all the others had long since been replaced
by lav_file->format.

Added the -z/-Z options, to allow the zero-motion pass to have a
different error threshold than the motion-detection pass.

Added -v, to control verbosity. "-v 1" outputs the pixel-detection
stats per frame, like it did before. "-v 0" shuts that up.

Added -h/-?, to print a short command summary. Bad options also print
the command summary.

Updated man page to reflect these changes.

Added the new version of the script from: Nicolas Boos

Changelog:

* Added two passes encoding mode, for both ffmpeg and mpeg2enc.
* Added new "unsharp" filter type, based on the y4munsharp tool.
* Now custom quant. matrices are also used with the ffmpeg encoder.
* The decoder tool can be specified.
* Audio pass-through is now enabled via the new -c flag.
* Tweaked a bit the mvcd output profile. It now uses its own "mvcd"
matrices and the audio bitrate is 128 instead of 224 kbps.