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 fixes building with --enable-small, by using the correct
variable name.

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

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

Remove unused variables "flags" and "dstFormat" in yuv2packed1,
merge source rows per plane for yuv2packed[12], and make every
source argument int16_t (some where invalidly set to uint16_t).
This prevents stack pollution and is part of the Great Evil Plan
to simplify swscale.

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

This is part of the Great Evil Plan to simplify swscale.

This is part of the Great Evil Plan to simplify swscale.

The comment should have been placed only in
yuv2rgb48_X_c_template, not yuv2rgb48_1_c_template.

This is part of the Great Evil Plan to simplify swscale. Note that
you'll see some code duplication between the output functions for
different RGB variants, and even between packed-YUV and RGB
variants. This is intentional because it improves readability.

YUV planes were marked as uint16_t, but they contained signed data.
Fixes issue 1108 and 675.

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

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

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

This is part of the Great Evil Plan to simplify swscale.

This is part of the Great Evil Plan to simplify swscale.

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.

This way the code in the file is less cluttered all-over-the-
place.

Inline functions are slightly larger in source code, but
are easier to handle in source code editors. The binary code
generated is the same.

Inline functions are slightly larger in source code, but
are easier to handle in source code editors. The binary code
generated is the same.

This is part of the Great Evil Plan to simplify swscale.

This generates better code on some non-x86 architectures.

This reduces source code size without affecting the binary.

Remove inline keyword from functions that are never inlined.
Use av_always_inline for functions that should be force-inlined
for performance reasons. Use av_cold for init functions.

Use of this wrapper was removed in a previous patch, but I
forgot to actually remove the function itself.

They are hacks added to reuse the same scaling function for
different formats and they may cause problems when SIMD
implementation of the same functions are used along with pure
C functions.

Make yuv2yuvX16_c a function pointer for yuv2yuvX(), so that the
function pointer becomes bitdepth-independent.

This duplicates the function fillPlane().

Remove duplicate "inC" and "_c" functions that do the same thing;
give each function that handles data and acts as a function pointer
a "_c" suffix; remove "_c" suffix from functions that are inherently
not optimizable. Remove inline keyword from functions that are only
used through function pointers.

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

Preparatory step to implement support for sizes > VOFW.

The functions are identical to their MMX counterparts. Thus,
pretending that swscale is highly optimized for AMD3DNOW
extensions is a poorly executed practical joke at best.

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

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>