Based on a somewhat similar idea in FFmpeg's swscale.

Based on a somewhat similar idea in FFmpeg's swscale copy.

We operated on 31-bits, but with e.g. lanczos scaling, values can
add up to beyond 0x80000000, thus leading to output of zeroes. Drop
one bit of precision fixes this.

We accessed the alpha array even it wasn't used and didn't
exist, hence leading to a NULL pointer segfault.

When using e.g. lanczos scaling, values can drop below 0, so they
should never be unsigned.

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

It's required to be non-zero since
cc58300e

There's no point in keeping them separate.

Those are reserved for the libs.

They were replaced by (de)muxer private options.

Deprecate AVFormatContext.loop_output.

Deprecate AVFormatContext.loop_input.

That is, unless the caller explicitly asks for them.

Prevents conflict between e.g. the 'loop' option in img2 demuxer and
'loop' flag in AVCodecContext.

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

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

Now the bin directory only contains those DLLs that are actually used.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

The build system doesn't use lib.exe any longer, and therefore this
can be simplified.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

libavcodec/libschroedingerdec.c:211:23: warning: variable 'format' set but not used

The copy regression test script is unused, bash-specific and did
not even work properly when it was originally committed.

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

libavfilter/vf_drawtext.c:427:22: warning: variable 'dst_pixel' set but not used
libavfilter/vf_drawtext.c:463:22: warning: variable 'dst_pixel' set but not used

libavcodec/libgsm.c:148: warning: passing argument 2 of ‘gsm_decode’ discards qualifiers from pointer target type
/usr/include/gsm/gsm.h:68: note: expected ‘gsm_byte *’ but argument is of type ‘const uint8_t *’

Specifying --enable-static --disable-shared isn't necessary, these
are the defaults.
Signed-off-by: Martin Storsjö <martin@martin.st>

It is enabled automatically when required nowadays.
Signed-off-by: Martin Storsjö <martin@martin.st>