lavfi/colorspace: move some functions to common file

These functions can be reused by other colorspace filters,
so move them to common file. No functional changes.

Signed-off-by: Ruiling Song <ruiling.song@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/libavfilter/colorspace.h b/libavfilter/colorspace.h
index 936681815a..459a5df60d 100644
--- a/libavfilter/colorspace.h
+++ b/libavfilter/colorspace.h
@@ -44,6 +44,10 @@ void ff_fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
                            const struct WhitepointCoefficients *wp,
                            double rgb2xyz[3][3]);
 
+const struct LumaCoefficients *ff_get_luma_coefficients(enum AVColorSpace csp);
+void ff_fill_rgb2yuv_table(const struct LumaCoefficients *coeffs,
+                           double rgb2yuv[3][3]);
+
 double ff_determine_signal_peak(AVFrame *in);
 void ff_update_hdr_metadata(AVFrame *in, double peak);