tone_mapping: don't pick ST2094 for inverse tone-mapping

This has no inverse curve, so don't default `auto` to it.
plexinc · Feb 17, 2023 · efcc1e5 · efcc1e5
1 parent 258cf93
commit efcc1e5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/tone_mapping.c b/src/tone_mapping.c
@@ -116,7 +116,7 @@ void pl_tone_map_params_infer(struct pl_tone_map_params *par)
         float src_max = pl_hdr_rescale(par->input_scaling, PL_HDR_NORM, par->input_max);
         float dst_max = pl_hdr_rescale(par->output_scaling, PL_HDR_NORM, par->output_max);
         float ratio = src_max / dst_max;
-        if (par->hdr.ootf.num_anchors || par->hdr.scene_avg) {
+        if ((par->hdr.ootf.num_anchors || par->hdr.scene_avg) && ratio > 1) {
             // HDR10+ metadata available: Pick SMPTE ST2094-40
             par->function = &pl_tone_map_st2094_40;
         } else if (ratio > 10) {