Useful when the amerge filter parameters are generated from a script based on
the number of input streams, by allowing 1 input it does not have to be handled
specially.

The split filter also allows 1 output, so it is more consistent to allow
merging 1 input as well.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Marton Balint <cus@passwd.hu>

Allows to use values returned from API and from ffprobe directly.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

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

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

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

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

Overall speedup ~10-20%

Tested-by: Michael on mingw32 mingw64 linux32 mips and arm

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

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Adds support for filtering frames with unknown channel layouts.

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

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

Make few helper functions.

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

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

From Sebastian Ramacher.
https://github.com/bp0/libhdcd/pull/11



Signed-off-by: Burt P <pburt0@gmail.com>

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

Regression since 736e2e2c.

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

Only useful if output pixel format have alpha.

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

Signed-off-by: Burt P <pburt0@gmail.com>

* use the actual sample rate
* use a more sensible frequency for the tone
* update fate test result

Signed-off-by: Burt P <pburt0@gmail.com>

Signed-off-by: Burt P <pburt0@gmail.com>

Signed-off-by: Burt P <pburt0@gmail.com>

Following a suggestion by Diego Biurrun.
_t is reserved for POSIX, apparently.

Signed-off-by: Burt P <pburt0@gmail.com>

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

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

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Pavel Koshevoy <pkoshevoy@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes ticket #5823.

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

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

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

The filter needs input frames with color properties filled out by
the decoder. Since this is not always possible, add input options to
the filter so that user may override color space, color primaries,
transfer characteristics, and color range, as well as a generic option
to set all properties at once.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

also use AVPixFmtDescriptor instead of avcodec_get_chroma_sub_sample()
for log2_chroma*.

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

This allows retroactive calculation/aggregation of PSNR from the stats
log.

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