vo_gpu_next: allow to use ICC profile luminance value

Also while at it respect target-peak option when ICC profile is used.

Fixes #11449

DOCS/interface-changes.rst

@@ -27,6 +27,10 @@ Interface changes
 ::
 
  --- mpv 0.36.0 ---
+    - Target luminance value is now also applied when ICC profile is used.
+      `--icc-use-luma` has been added to use ICC profile luminance value.
+      If target luminance and ICC luminance is not used, old behavior apply,
+      defaulting to 203 nits. (Only applies for `--vo=gpu-next`)
     - `playlist/N/title` gets set upon opening the file if it wasn't already set
       and a title is available.
     - add the `--vo=kitty` video output driver, as well as the options

DOCS/man/options.rst

@@ -6674,6 +6674,9 @@ them.
     value ``inf`` causes the BT.1886 curve to be treated as a pure power gamma
     2.4 function.
 
+``--icc-use-luma``
+    Use ICC profile luminance value. (Only for ``--vo=gpu-next``)
+
 ``--lut=<file>``
     Specifies a custom LUT (in Adobe .cube format) to apply to the colors
     as part of color conversion. The exact interpretation depends on the value

video/out/gpu/lcms.c

@@ -506,6 +506,7 @@ const struct m_sub_options mp_icc_conf = {
         {"icc-force-contrast", OPT_CHOICE(contrast, {"no", 0}, {"inf", -1}),
             M_RANGE(0, 1000000)},
         {"icc-3dlut-size", OPT_STRING_VALIDATE(size_str, validate_3dlut_size_opt)},
+        {"icc-use-luma", OPT_BOOL(icc_use_luma)},
         {"3dlut-size", OPT_REPLACED("icc-3dlut-size")},
         {"icc-contrast", OPT_REMOVED("see icc-force-contrast")},
         {0}

video/out/gpu/lcms.h

@@ -18,6 +18,7 @@ struct mp_icc_opts {
     char *size_str;
     int intent;
     int contrast;
+    bool icc_use_luma;
 };
 
 struct lut3d {

video/out/vo_gpu_next.c

@@ -798,10 +798,6 @@ static void apply_target_options(struct priv *p, struct pl_frame *target)
     target->lut = p->target_lut.lut;
     target->lut_type = p->target_lut.type;
 
-#ifdef PL_HAVE_LCMS
-    target->profile = p->icc_profile;
-#endif
-
     // Colorspace overrides
     const struct gl_video_opts *opts = p->opts_cache->opts;
     if (p->output_levels)
@@ -818,6 +814,20 @@ static void apply_target_options(struct priv *p, struct pl_frame *target)
         tbits->color_depth += opts->dither_depth - tbits->sample_depth;
         tbits->sample_depth = opts->dither_depth;
     }
+
+#ifdef PL_HAVE_LCMS
+    target->profile = p->icc_profile;
+
+    if (opts->icc_opts->icc_use_luma) {
+        // Use detected luminance
+        p->icc.max_luma = 0;
+    } else {
+        // Use HDR levels if available, fall back to default luminance
+        p->icc.max_luma = target->color.hdr.max_luma;
+        if (!p->icc.max_luma)
+            p->icc.max_luma = pl_icc_default_params.max_luma;
+    }
+#endif
 }
 
 static void apply_crop(struct pl_frame *frame, struct mp_rect crop,