The vertical scaler handles 2 rows at a time and thus requires
alignment by 2, or else it'll read invalid memory and result in
corrupt output.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

SSE-optimized hScale() scales up to 4 pixels at once, so we need to
allocate up to 3 padding pixels to prevent overreads. This fixes
valgrind errors in various swscale-tests on fate.

The logged information is possibly false, and it tends to be outdated
after each change since the logging code needs to be manually updated.

Simplify and prevent confusing wrong debug messages.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Also remove the unnecessary isSupportedIn/Out macros.

Make the code more compact/readable, and simplify the access to
lsws-specific pixel format information.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This reverts commit ac0fb59348. It
causes valgrind errors which I'll want to investigate before
resubmitting this.

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

Fixes a crash when forcing libc to strictly adhere to malloc sizes.

We would use the second half of the U plane buffer, rather than the
V plane buffer, to output the V plane pixels.

This functionality is only implemented for RGB24/32 and causes crashes
otherwise.

For 9/10bit, it means we don't have to upscale to 16bit before
actual scaling or pixel format conversion, and thus a performance
gain.

This means that precision is retained when scaling between sample
formats with >8 bits per component (48bit RGB, 16bit grayscale,
9/10/16bit YUV).

This works through some non-obvious hacks in utils.c.

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Also add missing glue code for recently added YUV422P10 formats
to swscale.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Inline functions are easier to read, maintain, modify and test,
which justifies the slightly increased source size. This patch
also adds support for non-native endianness RGB15/16 and fixes
isSupportedOutput() to no longer claim that we support writing
non-native RGB565/555/444.

Altivec sws code intentionally overreads buffers for better performance,
so we need to allocate larger buffers to handle that.

That means it won't be allocated when not needed. Alongside
this, it fixes valgrind/fate-detected memory leaks.

Preparatory step to implement support for sizes > VOFW.

This allows to convert between formats of arbitrary width,
regardless of the value of VOF/VOFW.

Adding _POSIX_C_SOURCE to CPPFLAGS globally produces all sorts of problems
since it causes certain system functions to be hidden on some (BSD) systems.
The solution is to only add the flag on systems that really require it, i.e.
glibc-based ones.

This change makes BSD systems compile out-of-the-box without the need for
adding specific flags manually.  It also allows dropping a number of flags
set manually on a file-per-file basis, but were only present to work around
breakage introduced by the presence of _POSIX_C_SOURCE.

Also add _XOPEN_SOURCE to CPPFLAGS for glibc systems.  We use XSI extensions
in several places already, so it is preferable to define it globally instead
of littering source files with individual #defines only needed for glibc.

Fix handling of input if not in native endianness, and add support for
9/10-bit output. This allows us to force endianness of YUV420P 9/10bit
in the H264/10bit fate tests, which should fix them on big-endian
systems.

Also add support for these formats in libswscale.

Needed for high bit depth h264 decoding.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

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

also update the multiple inclusion guards in config.h|mak

handle_jpeg may update the src/dstFormat variables, this makes sure the
updated version is stored in the context.

This fixes roundup issue 2302.

Patch by Troot, all_crap_goes_here at hotmail

Originally committed as revision 32562 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

but worse it did not set up destination dimensions, thus every user
of it would necessarily fail.

Originally committed as revision 32424 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32415 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

improving vertical alignment and readability.

Originally committed as revision 32405 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

readibility.

Originally committed as revision 32404 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32402 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

sws_init_context() instead.

Originally committed as revision 32401 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32394 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32393 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 32392 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale