MJPEG Tools Svn

code cleaning

libquicktime does not reflect the presence/absence of an atom in the return
status. Instead the atom is set to 0 values. This was causing the wrong
default SAR to be used if no 'pasp' atom was found in the file.

changed the version number to 0.2.

added the patch for : Johannes Lehtinen

Changes affecting the yuvfps core:

- removed the limitation of 3 plane chroma modes only
(allocate space for Y4M_MAX_NUM_PLANES in static structures and
dynamically allocate space for the actually required planes)

- for all malloc calls use a new static checked_malloc function which
checks for failures (to minimize the amount of duplicated code)

- moved the frame rate normalization to the main function
(so that it is shared by the two alternative algorithms)

- added support for specifying output/input interlacing mode
(can be changed only when using weighted average resampling mode)

- optionally use weighted average resampling mode, if so specified

The default is to use the drop/duplicate algorithm as before.

I did not update the version number (still 0.1), although the LOC count
doubled :) Also, I did not update the dates in the man page, although I
did add several paragraphs there.

Most of the wa resampling code is contained in resample_wa function.
Eliminating couple of separate functions made the code a bit less
readable but I thought it was still cleaner way to do it than passing
all the required variables internal to resample_wa as parameters or
making them global static variables.

Checkpoint: sequence encoder state logic modified to support
2-pass and look-ahead coding.

- All state needed for pass2 is in Picture structure
- Improved parallelisation support
- Hooks for convenient implementation of pass-2 coding
- Function names now correctly distinguish 'Picture' and 'Frame'

Ooops CBR set to false when set. Doh!

The vectorcope now lookes like one, it has a description.

Put SDL_gfx related variables inside an ifdef to avoid 'unused' variable
warnings when building without SDL_gfx

User request: Add -C flag to force CBR

Keeping up with the code changes. The -s (spatial) filter defaults to
disabled now since the -m (3D median) filter does a similar job (as good or
better I'm told).