csputils: add mp_hdr_metadata

video/csputils.h

@@ -139,6 +139,24 @@ extern const struct m_opt_choice_alternatives mp_stereo3d_names[];
 #define MP_STEREO3D_NAME_DEF(x, def) \
     (MP_STEREO3D_NAME(x) ? MP_STEREO3D_NAME(x) : (def))
 
+struct mp_hdr_metadata {
+    // HDR10
+    // Mastering display metadata
+    float min_luma, max_luma;       // min/max luminance (in cd/m²)
+
+    // Content light level
+    float max_cll;                  // max content light level (in cd/m²)
+    float max_fall;                 // max frame average light level (in cd/m²)
+
+    // HDR10+
+    float scene_max[3];             // maxRGB in cd/m² per component (RGB)
+    float scene_avg;                // average of maxRGB in cd/m²
+
+    // CIE Y
+    float max_pq_y;                 // maximum PQ luminance (in PQ, 0-1)
+    float avg_pq_y;                 // averaged PQ luminance (in PQ, 0-1)
+};
+
 struct mp_colorspace {
     enum mp_csp space;
     enum mp_csp_levels levels;