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output: Check the EDID for the supported sink Colorimetry

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Just like the HDR Metadata property the Colorspace property values only
indicate that the display driver supports signaling certain colorimetry.
It does not indidcate that the sink actually supports processing the
colorimetry. For this we have to look up the colorimetry support in the
EDID.

The default colorimetry is always supported. If we want bt.2020 we might
get either the RGB or YCC variant even if we ask for the RGB variant but
there is nothing we can do about it so let's just pretend it's a driver
issue.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2919>
This commit is contained in:
Sebastian Wick 2023-03-17 01:17:45 +01:00
parent 754a1a1ce6
commit cca07612b8
3 changed files with 45 additions and 10 deletions
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29
src/backends/meta-output.c
View File

@ -528,17 +528,38 @@ meta_output_set_privacy_screen_enabled (MetaOutput *output,
return TRUE;
}
gboolean
meta_output_info_is_color_space_supported (const MetaOutputInfo *output_info,
MetaOutputColorspace color_space)
{
MetaEdidColorimetry colorimetry;
if (!output_info->edid_info)
return FALSE;
colorimetry = output_info->edid_info->colorimetry;
switch (color_space)
{
case META_OUTPUT_COLORSPACE_DEFAULT:
return TRUE;
case META_OUTPUT_COLORSPACE_BT2020:
return !!(colorimetry & META_EDID_COLORIMETRY_BT2020RGB);
default:
return FALSE;
}
}
gboolean
meta_output_is_color_space_supported (MetaOutput *output,
MetaOutputColorspace color_space)
{
MetaOutputClass *output_class = META_OUTPUT_GET_CLASS (output);
uint64_t supported = 0;
if (output_class->get_supported_color_spaces)
supported = output_class->get_supported_color_spaces (output);
if (!output_class->is_color_space_supported)
return FALSE;
return supported & (1 << color_space);
return output_class->is_color_space_supported (output, color_space);
}
void

6
src/backends/meta-output.h
View File

@ -182,6 +182,9 @@ META_EXPORT_TEST
void meta_output_info_parse_edid (MetaOutputInfo *output_info,
GBytes *edid);
gboolean meta_output_info_is_color_space_supported (const MetaOutputInfo *output_info,
MetaOutputColorspace color_space);
gboolean meta_output_is_laptop (MetaOutput *output);
G_DEFINE_AUTOPTR_CLEANUP_FUNC (MetaOutputInfo, meta_output_info_unref)
@ -198,7 +201,8 @@ struct _MetaOutputClass
gboolean (* set_privacy_screen_enabled) (MetaOutput *output,
gboolean enabled,
GError **error);
uint64_t (* get_supported_color_spaces) (MetaOutput *output);
gboolean (* is_color_space_supported) (MetaOutput *output,
MetaOutputColorspace color_space);
gboolean (* is_hdr_metadata_supported) (MetaOutput *output);
};

20
src/backends/native/meta-output-kms.c
View File

@ -139,16 +139,26 @@ meta_output_kms_get_privacy_screen_state (MetaOutput *output)
return connector_state->privacy_screen_state;
}
static uint64_t
meta_output_kms_get_supported_color_spaces (MetaOutput *output)
static gboolean
meta_output_kms_is_color_space_supported (MetaOutput *output,
MetaOutputColorspace color_space)
{
MetaOutputKms *output_kms = META_OUTPUT_KMS (output);
const MetaKmsConnectorState *connector_state;
const MetaOutputInfo *output_info;
output_info = meta_output_get_info (output);
if (!meta_output_info_is_color_space_supported (output_info, color_space))
return FALSE;
connector_state =
meta_kms_connector_get_current_state (output_kms->kms_connector);
return connector_state->colorspace.supported;
if (!(connector_state->colorspace.supported & (1 << color_space)))
return FALSE;
return TRUE;
}
static gboolean
@ -535,8 +545,8 @@ meta_output_kms_class_init (MetaOutputKmsClass *klass)
output_class->get_privacy_screen_state =
meta_output_kms_get_privacy_screen_state;
output_class->get_supported_color_spaces =
meta_output_kms_get_supported_color_spaces;
output_class->is_color_space_supported =
meta_output_kms_is_color_space_supported;
output_class->is_hdr_metadata_supported =
meta_output_kms_is_hdr_metadata_supported;