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-rw-r--r--src/gamma-linux-drm.c65
-rw-r--r--src/libgamma-error.h7
2 files changed, 46 insertions, 26 deletions
diff --git a/src/gamma-linux-drm.c b/src/gamma-linux-drm.c
index 4ac0022..e0e9b74 100644
--- a/src/gamma-linux-drm.c
+++ b/src/gamma-linux-drm.c
@@ -491,10 +491,39 @@ static int read_connector_data(libgamma_crtc_state_t* restrict crtc, libgamma_cr
if ((fields & (CRTC_INFO_WIDTH_MM | CRTC_INFO_HEIGHT_MM | CRTC_INFO_CONNECTOR_TYPE |
CRTC_INFO_ACTIVE | CRTC_INFO_SUBPIXEL_ORDER)))
{
+ /* Get whether or not a monitor is plugged in. */
+ out->active = connector->connection == DRM_MODE_CONNECTED;
+ out->active_error = connector->connection == DRM_MODE_UNKNOWNCONNECTION ? LIBGAMMA_STATE_UNKNOWN : 0;
+ if (out->active == 0)
+ {
+ if ((fields & (CRTC_INFO_WIDTH_MM | CRTC_INFO_HEIGHT_MM | CRTC_INFO_SUBPIXEL_ORDER)))
+ out->width_mm_error = out->height_mm_error = out->subpixel_order_error = LIBGAMMA_NOT_CONNECTED;
+ goto not_connected;
+ }
+
/* Get viewport dimension. */
out->width_mm = connector->mmWidth;
out->height_mm = connector->mmHeight;
+ /* Get subpixel order. */
+#define __select(value) \
+ case DRM_MODE_SUBPIXEL_##value: out->subpixel_order = LIBGAMMA_SUBPIXEL_ORDER_##value; break
+ switch (connector->subpixel)
+ {
+ __select (UNKNOWN);
+ __select (HORIZONTAL_RGB);
+ __select (HORIZONTAL_BGR);
+ __select (VERTICAL_RGB);
+ __select (VERTICAL_BGR);
+ __select (NONE);
+ default:
+ out->subpixel_order_error = LIBGAMMA_SUBPIXEL_ORDER_NOT_RECOGNISED;
+ break;
+ }
+#undef __select
+
+ not_connected:
+
/* Get connector type. */
#define __select(type, name) \
case DRM_MODE_CONNECTOR_##type: out->connector_type = LIBGAMMA_CONNECTOR_TYPE_##type, connector_name_base = name; break
@@ -529,27 +558,6 @@ static int read_connector_data(libgamma_crtc_state_t* restrict crtc, libgamma_cr
break;
}
#undef __select
-
- /* Get subpixel order. */
-#define __select(value) \
- case DRM_MODE_SUBPIXEL_##value: out->subpixel_order = LIBGAMMA_SUBPIXEL_ORDER_##value; break
- switch (connector->subpixel)
- {
- __select (UNKNOWN);
- __select (HORIZONTAL_RGB);
- __select (HORIZONTAL_BGR);
- __select (VERTICAL_RGB);
- __select (VERTICAL_BGR);
- __select (NONE);
- default:
- out->subpixel_order_error = LIBGAMMA_SUBPIXEL_ORDER_NOT_RECOGNISED;
- break;
- }
-#undef __select
-
- /* Get whether or not a monitor is plugged in. */
- out->active = connector->connection == DRM_MODE_CONNECTED;
- out->active_error = connector->connection == DRM_MODE_UNKNOWNCONNECTION ? LIBGAMMA_STATE_UNKNOWN : 0;
}
/* Get the connector's name. */
@@ -651,10 +659,11 @@ int libgamma_linux_drm_get_crtc_information(libgamma_crtc_information_t* restric
fields |= CRTC_INFO_EDID;
if ((fields & CRTC_INFO_CONNECTOR_NAME))
fields |= CRTC_INFO_CONNECTOR_TYPE;
+ if (CRTC_INFO_EDID | CRTC_INFO_WIDTH_MM | CRTC_INFO_HEIGHT_MM | CRTC_INFO_SUBPIXEL_ORDER)
+ fields |= CRTC_INFO_ACTIVE;
/* Figure out whether we require the connector to get all information we want. */
- require_connector = fields & (CRTC_INFO_EDID | CRTC_INFO_WIDTH_MM | CRTC_INFO_HEIGHT_MM |
- CRTC_INFO_SUBPIXEL_ORDER | CRTC_INFO_CONNECTOR_TYPE);
+ require_connector = fields & (CRTC_INFO_ACTIVE | CRTC_INFO_CONNECTOR_TYPE);
if (require_connector == 0)
goto cont;
@@ -667,10 +676,16 @@ int libgamma_linux_drm_get_crtc_information(libgamma_crtc_information_t* restric
= this->width_mm_edid_error = this->height_mm_edid_error = error;
goto cont;
}
- if ((fields & (CRTC_INFO_WIDTH_MM | CRTC_INFO_HEIGHT_MM | CRTC_INFO_SUBPIXEL_ORDER | CRTC_INFO_CONNECTOR_TYPE)))
- e |= read_connector_data(crtc, this, connector, fields);
+ e |= read_connector_data(crtc, this, connector, fields);
if ((fields & CRTC_INFO_EDID) == 0)
goto cont;
+ if (this->active_error || (this->active == 0))
+ {
+ e |= this->edid_error = this->gamma_error
+ = this->width_mm_edid_error = this->height_mm_edid_error
+ = LIBGAMMA_NOT_CONNECTED;
+ goto cont;
+ }
e |= get_edid(crtc, this, connector);
if (this->edid == NULL)
{
diff --git a/src/libgamma-error.h b/src/libgamma-error.h
index 87eb4ac..15a913c 100644
--- a/src/libgamma-error.h
+++ b/src/libgamma-error.h
@@ -247,6 +247,11 @@ extern const char* libgamma_group_name;
*/
#define LIBGAMMA_NULL_PARTITION (-40)
+/**
+ * There is not monitor connected to the connector of the selected CRTC
+ */
+#define LIBGAMMA_NOT_CONNECTED (-41)
+
/**
@@ -254,7 +259,7 @@ extern const char* libgamma_group_name;
* If this is lower than the number your program thinks it
* should be sould update your program for new errors.
*/
-#define LIBGAMMA_ERROR_MIN (-40)
+#define LIBGAMMA_ERROR_MIN (-41)