Found-by: Andreas Cadhalpun <andreas.cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

It is an internal swscale symbol and thus should not be exported.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

It is an internal swscale symbol and thus should not be exported.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Proper names should be capitalized in all user facing API as far as
possible. The option names themselves have not been changed since:
1. We consistently keep option names in lower case.
2. Changing them would break existing scripts.

The converse is also true: improper names should not be capitalized
generally.
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes Ticket4746
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Found-by: Kierank
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Both of these dithering methods are from http://pippin.gimp.org/a_dither/ for
GIF they can be considered better than bayer (provides more gray-levels), and
spatial stability - often more than twice as good compression and less visual
flicker than error diffusion methods (the methods also avoids error-shadow
artifacts of diffusion dithers).

These methods are similar to blue/green noise type dither masks; but are
simple enough to generate their mask on the fly. They are still research work
in progress; though more expensive to generate masks (which can be used in a
LUT) like 'void and cluster' and similar methods will yield superior results

Suggested-by: Ronald S. Bultje
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Before this commit, sws_init_context() failed with an error if no scaler
was explicitly set.

Defaulting to something reasonable is better behavior.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This allows specifying more dither algorithms without using up flags and
without ambiguities.

Also initialize the new field based on the flags and use it.
Note, improving the logic of the checks is left to subsequent
commits, this here only switches from flags to enum.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The version number is useful to check the libavutil version against which
the library was compiled at run-time, which in turn may be useful to deal
with binary compatibility issues.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This breaks API and ABI.

This breaks API and ABI.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Originally committed as revision 32414 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

scale context. Prevent pointless warnings when using
av_opt_set_defaults() for setting the default values, as in a pending
patch.

Originally committed as revision 32413 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

SWScale context.

Originally committed as revision 32403 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32369 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32068 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

- Place curly brackets in the same line as while/for/if/switch/else/do;
- Place curly brackets at column 0 in the next line starting a function.

Originally committed as revision 29523 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale