pca: use sizeof(variable) instead of sizeos(TYPE)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
pca: use av_calloc()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
swr/rematrix: use av_calloc()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
doc/filters: add a curves example with psfile.
vf_histogram: avoid floats, unbreak fate

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
sws/x86: update RENAME(rgb24toyv12)() to using the user provided rgb2yuv table

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavfi/drawtext: make options array more readable.
colorbalance filter

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

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