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color: accept max_fall and max_cll even for tf different from PQ

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The CM&HDR protocol extension spec relaxed the requirements for the
max_fall and max_cll setters. Now we accept such values even when the
transfer function is not PQ.

This also fixes an issue in which we'd not accept target_luminance
for transfer function different from PQ, which was not on the spec.

INCONSISTENT_SET is not being used in any other errors, so remove that
from enum weston_color_profile_param_builder_error.

Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
This commit is contained in:
Leandro Ribeiro 2024-12-13 19:17:44 -03:00 • committed by Pekka Paalanen
parent 1082ef328a
commit 9ae0a7ec05
3 changed files with 1 additions and 11 deletions
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1
include/libweston/libweston.h
View file

@ -361,7 +361,6 @@ enum weston_color_profile_param_builder_error {
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_CIE_XY_OUT_OF_RANGE,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INVALID_LUMINANCE,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INCONSISTENT_LUMINANCES,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INCONSISTENT_SET,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INCOMPLETE_SET,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_ALREADY_SET,
WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_UNSUPPORTED,

9
libweston/color-profile-param-builder.c
View file

@ -535,15 +535,6 @@ builder_validate_params_set(struct weston_color_profile_param_builder *builder)
if (!(builder->group_mask & WESTON_COLOR_PROFILE_PARAMS_TF))
store_error(builder, WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INCOMPLETE_SET,
"transfer function not set");
/* If target luminance values were given, tf must be PQ. */
if (builder->params.tf_info->tf != WESTON_TF_ST2084_PQ &&
(builder->group_mask & WESTON_COLOR_PROFILE_PARAMS_TARGET_LUMINANCE ||
builder->group_mask & WESTON_COLOR_PROFILE_PARAMS_MAXCLL ||
builder->group_mask & WESTON_COLOR_PROFILE_PARAMS_MAXFALL))
store_error(builder, WESTON_COLOR_PROFILE_PARAM_BUILDER_ERROR_INCONSISTENT_SET,
"luminance values were given but transfer function " \
"is not Rec. ITU-R BT.2100-2 (PQ)");
}
static float

2
libweston/color.h
View file

@ -146,7 +146,7 @@ struct weston_color_profile_params {
/* Target luminance parameters cd/m²; negative when not set */
float target_min_luminance, target_max_luminance;
float maxCLL, maxFALL; /* only for PQ transfer function */
float maxCLL, maxFALL;
};
/** Type or formula for a curve */