avutil/csp: create public API for colorspace structs

This commit moves some of the functionality from avfilter/colorspace
into avutil/csp and exposes it as a public API so it can be used by
libavcodec and/or libavformat. It also converts those structs from
double values to AVRational to make regression testing easier and
more consistent.

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

1 files changed, 4 insertions, 27 deletions

diff --git a/libavfilter/colorspace.h b/libavfilter/colorspace.h
index 6959133a49..879518d242 100644
--- a/libavfilter/colorspace.h
+++ b/libavfilter/colorspace.h
@@ -20,43 +20,20 @@
 #ifndef AVFILTER_COLORSPACE_H
 #define AVFILTER_COLORSPACE_H
 
+#include "libavutil/csp.h"
 #include "libavutil/frame.h"
 #include "libavutil/pixfmt.h"
 
 #define REFERENCE_WHITE 100.0f
 
-struct LumaCoefficients {
-    double cr, cg, cb;
-};
-
-struct PrimaryCoefficients {
-    double xr, yr, xg, yg, xb, yb;
-};
-
-struct WhitepointCoefficients {
-    double xw, yw;
-};
-
-struct ColorPrimaries {
-    struct WhitepointCoefficients wp;
-    struct PrimaryCoefficients prim;
-};
-
 void ff_matrix_invert_3x3(const double in[3][3], double out[3][3]);
 void ff_matrix_mul_3x3(double dst[3][3],
                const double src1[3][3], const double src2[3][3]);
-void ff_fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
-                           const struct WhitepointCoefficients *wp,
+void ff_fill_rgb2xyz_table(const AVPrimaryCoefficients *coeffs,
+                           const AVWhitepointCoefficients *wp,
                            double rgb2xyz[3][3]);
-
-/* Returns AVCOL_PRI_UNSPECIFIED if no clear match can be identified */
-enum AVColorPrimaries ff_detect_color_primaries(const struct ColorPrimaries *prm);
-
-const struct ColorPrimaries *ff_get_color_primaries(enum AVColorPrimaries prm);
-const struct LumaCoefficients *ff_get_luma_coefficients(enum AVColorSpace csp);
-void ff_fill_rgb2yuv_table(const struct LumaCoefficients *coeffs,
+void ff_fill_rgb2yuv_table(const AVLumaCoefficients *coeffs,
                            double rgb2yuv[3][3]);
-
 double ff_determine_signal_peak(AVFrame *in);
 void ff_update_hdr_metadata(AVFrame *in, double peak);