diff --git a/libavfilter/colorspace.c b/libavfilter/colorspace.c
index 7fd7bdf0d9..9a61318e8a 100644
--- a/libavfilter/colorspace.c
+++ b/libavfilter/colorspace.c
@@ -20,7 +20,7 @@
 #include "colorspace.h"
 
 
-void invert_matrix3x3(const double in[3][3], double out[3][3])
+void ff_invert_matrix3x3(const double in[3][3], double out[3][3])
 {
     double m00 = in[0][0], m01 = in[0][1], m02 = in[0][2],
            m10 = in[1][0], m11 = in[1][1], m12 = in[1][2],
@@ -47,7 +47,8 @@ void invert_matrix3x3(const double in[3][3], double out[3][3])
     }
 }
 
-void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
+void ff_mul3x3(double dst[3][3],
+               const double src1[3][3], const double src2[3][3])
 {
     int m, n;
 
@@ -60,9 +61,9 @@ void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3])
 /*
  * see e.g. http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
  */
-void fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
-                        const struct WhitepointCoefficients *wp,
-                        double rgb2xyz[3][3])
+void ff_fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
+                           const struct WhitepointCoefficients *wp,
+                           double rgb2xyz[3][3])
 {
     double i[3][3], sr, sg, sb, zw;
 
@@ -73,7 +74,7 @@ void fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
     rgb2xyz[2][0] = (1.0 - coeffs->xr - coeffs->yr) / coeffs->yr;
     rgb2xyz[2][1] = (1.0 - coeffs->xg - coeffs->yg) / coeffs->yg;
     rgb2xyz[2][2] = (1.0 - coeffs->xb - coeffs->yb) / coeffs->yb;
-    invert_matrix3x3(rgb2xyz, i);
+    ff_invert_matrix3x3(rgb2xyz, i);
     zw = 1.0 - wp->xw - wp->yw;
     sr = i[0][0] * wp->xw + i[0][1] * wp->yw + i[0][2] * zw;
     sg = i[1][0] * wp->xw + i[1][1] * wp->yw + i[1][2] * zw;
diff --git a/libavfilter/colorspace.h b/libavfilter/colorspace.h
index d330917bd3..065c90fc52 100644
--- a/libavfilter/colorspace.h
+++ b/libavfilter/colorspace.h
@@ -34,8 +34,10 @@ struct WhitepointCoefficients {
     double xw, yw;
 };
 
-void invert_matrix3x3(const double in[3][3], double out[3][3]);
-void mul3x3(double dst[3][3], const double src1[3][3], const double src2[3][3]);
-void fill_rgb2xyz_table(const struct PrimaryCoefficients *coeffs,
-                        const struct WhitepointCoefficients *wp, double rgb2xyz[3][3]);
+void ff_invert_matrix3x3(const double in[3][3], double out[3][3]);
+void ff_mul3x3(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,
+                           double rgb2xyz[3][3]);
 #endif
diff --git a/libavfilter/vf_colorspace.c b/libavfilter/vf_colorspace.c
index b593215daa..b81db96b0d 100644
--- a/libavfilter/vf_colorspace.c
+++ b/libavfilter/vf_colorspace.c
@@ -371,7 +371,7 @@ static void fill_whitepoint_conv_table(double out[3][3], enum WhitepointAdaptati
     double mai[3][3], fac[3][3], tmp[3][3];
     double rs, gs, bs, rd, gd, bd;
 
-    invert_matrix3x3(ma, mai);
+    ff_invert_matrix3x3(ma, mai);
     rs = ma[0][0] * wp_src->xw + ma[0][1] * wp_src->yw + ma[0][2] * zw_src;
     gs = ma[1][0] * wp_src->xw + ma[1][1] * wp_src->yw + ma[1][2] * zw_src;
     bs = ma[2][0] * wp_src->xw + ma[2][1] * wp_src->yw + ma[2][2] * zw_src;
@@ -382,8 +382,8 @@ static void fill_whitepoint_conv_table(double out[3][3], enum WhitepointAdaptati
     fac[1][1] = gd / gs;
     fac[2][2] = bd / bs;
     fac[0][1] = fac[0][2] = fac[1][0] = fac[1][2] = fac[2][0] = fac[2][1] = 0.0;
-    mul3x3(tmp, ma, fac);
-    mul3x3(out, tmp, mai);
+    ff_mul3x3(tmp, ma, fac);
+    ff_mul3x3(out, tmp, mai);
 }
 
 static void apply_lut(int16_t *buf[3], ptrdiff_t stride,
@@ -588,19 +588,19 @@ static int create_filtergraph(AVFilterContext *ctx,
 
             wp_out = &whitepoint_coefficients[s->out_primaries->wp];
             wp_in = &whitepoint_coefficients[s->in_primaries->wp];
-            fill_rgb2xyz_table(&s->out_primaries->coeff, wp_out, rgb2xyz);
-            invert_matrix3x3(rgb2xyz, xyz2rgb);
-            fill_rgb2xyz_table(&s->in_primaries->coeff, wp_in, rgb2xyz);
+            ff_fill_rgb2xyz_table(&s->out_primaries->coeff, wp_out, rgb2xyz);
+            ff_invert_matrix3x3(rgb2xyz, xyz2rgb);
+            ff_fill_rgb2xyz_table(&s->in_primaries->coeff, wp_in, rgb2xyz);
             if (s->out_primaries->wp != s->in_primaries->wp &&
                 s->wp_adapt != WP_ADAPT_IDENTITY) {
                 double wpconv[3][3], tmp[3][3];
 
                 fill_whitepoint_conv_table(wpconv, s->wp_adapt, s->in_primaries->wp,
                                            s->out_primaries->wp);
-                mul3x3(tmp, rgb2xyz, wpconv);
-                mul3x3(rgb2rgb, tmp, xyz2rgb);
+                ff_mul3x3(tmp, rgb2xyz, wpconv);
+                ff_mul3x3(rgb2rgb, tmp, xyz2rgb);
             } else {
-                mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
+                ff_mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
             }
             for (m = 0; m < 3; m++)
                 for (n = 0; n < 3; n++) {
@@ -725,7 +725,7 @@ static int create_filtergraph(AVFilterContext *ctx,
             for (n = 0; n < 8; n++)
                 s->yuv_offset[0][n] = off;
             fill_rgb2yuv_table(s->in_lumacoef, rgb2yuv);
-            invert_matrix3x3(rgb2yuv, yuv2rgb);
+            ff_invert_matrix3x3(rgb2yuv, yuv2rgb);
             bits = 1 << (in_desc->comp[0].depth - 1);
             for (n = 0; n < 3; n++) {
                 for (in_rng = s->in_y_rng, m = 0; m < 3; m++, in_rng = s->in_uv_rng) {
@@ -781,7 +781,7 @@ static int create_filtergraph(AVFilterContext *ctx,
             double yuv2yuv[3][3];
             int in_rng, out_rng;
 
-            mul3x3(yuv2yuv, yuv2rgb, rgb2yuv);
+            ff_mul3x3(yuv2yuv, yuv2rgb, rgb2yuv);
             for (out_rng = s->out_y_rng, m = 0; m < 3; m++, out_rng = s->out_uv_rng) {
                 for (in_rng = s->in_y_rng, n = 0; n < 3; n++, in_rng = s->in_uv_rng) {
                     s->yuv2yuv_coeffs[m][n][0] =
diff --git a/libavfilter/vf_tonemap_opencl.c b/libavfilter/vf_tonemap_opencl.c
index 6b8bbeea7b..b4ef7f269b 100644
--- a/libavfilter/vf_tonemap_opencl.c
+++ b/libavfilter/vf_tonemap_opencl.c
@@ -124,10 +124,10 @@ static void get_rgb2rgb_matrix(enum AVColorPrimaries in, enum AVColorPrimaries o
                                double rgb2rgb[3][3]) {
     double rgb2xyz[3][3], xyz2rgb[3][3];
 
-    fill_rgb2xyz_table(&primaries_table[out], &whitepoint_table[out], rgb2xyz);
-    invert_matrix3x3(rgb2xyz, xyz2rgb);
-    fill_rgb2xyz_table(&primaries_table[in], &whitepoint_table[in], rgb2xyz);
-    mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
+    ff_fill_rgb2xyz_table(&primaries_table[out], &whitepoint_table[out], rgb2xyz);
+    ff_invert_matrix3x3(rgb2xyz, xyz2rgb);
+    ff_fill_rgb2xyz_table(&primaries_table[in], &whitepoint_table[in], rgb2xyz);
+    ff_mul3x3(rgb2rgb, rgb2xyz, xyz2rgb);
 }
 
 #define OPENCL_SOURCE_NB 3
