drm: sort mode list for all connectors
We'll add multi-output support in the future, so we'll need to pick a mode for an arbitrary connector.
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parent
e5e0ebf5a4
commit
7a55cb80b9
1 changed files with 21 additions and 22 deletions
43
src/drm.cpp
43
src/drm.cpp
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@ -320,6 +320,21 @@ static bool get_properties(struct drm_t *drm, uint32_t obj_id, uint32_t obj_type
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return true;
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}
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static bool compare_modes( drmModeModeInfo mode1, drmModeModeInfo mode2 )
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{
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if (mode1.type & DRM_MODE_TYPE_PREFERRED)
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return true;
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if (mode2.type & DRM_MODE_TYPE_PREFERRED)
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return false;
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int area1 = mode1.hdisplay * mode1.vdisplay;
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int area2 = mode2.hdisplay * mode2.vdisplay;
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if (area1 != area2)
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return area1 > area2;
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return mode1.vrefresh > mode2.vrefresh;
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}
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static bool get_resources(struct drm_t *drm)
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{
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drmModeRes *resources = drmModeGetResources(drm->fd);
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@ -337,6 +352,10 @@ static bool get_resources(struct drm_t *drm)
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return false;
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}
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/* sort modes by preference: preferred flag, then highest area, then
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* highest refresh rate */
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std::stable_sort(conn.connector->modes, conn.connector->modes + conn.connector->count_modes, compare_modes);
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if (!get_properties(drm, conn.id, DRM_MODE_OBJECT_CONNECTOR, conn.props, conn.initial_prop_values)) {
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return false;
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}
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@ -433,24 +452,8 @@ static const drmModeModeInfo *get_matching_mode( const drmModeConnector *connect
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return NULL;
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}
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static bool compare_modes( drmModeModeInfo mode1, drmModeModeInfo mode2 )
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{
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if (mode1.type & DRM_MODE_TYPE_PREFERRED)
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return true;
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if (mode2.type & DRM_MODE_TYPE_PREFERRED)
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return false;
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int area1 = mode1.hdisplay * mode1.vdisplay;
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int area2 = mode2.hdisplay * mode2.vdisplay;
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if (area1 != area2)
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return area1 > area2;
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return mode1.vrefresh > mode2.vrefresh;
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}
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int init_drm(struct drm_t *drm, const char *device)
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{
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drmModeConnector *connector = NULL;
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int ret;
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if (device) {
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@ -512,18 +515,14 @@ int init_drm(struct drm_t *drm, const char *device)
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return -1;
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}
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/* sort modes by preference: preferred flag, then highest area, then
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* highest refresh rate */
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std::stable_sort(connector->modes, connector->modes + connector->count_modes, compare_modes);
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const drmModeModeInfo *mode = nullptr;
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if ( g_nOutputWidth != 0 || g_nOutputHeight != 0 || g_nNestedRefresh != 0 )
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{
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mode = get_matching_mode(connector, g_nOutputWidth, g_nOutputHeight, g_nNestedRefresh);
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mode = get_matching_mode(drm->connector->connector, g_nOutputWidth, g_nOutputHeight, g_nNestedRefresh);
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}
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if (!mode) {
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mode = get_matching_mode(connector, 0, 0, 0);
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mode = get_matching_mode(drm->connector->connector, 0, 0, 0);
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}
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if (!mode) {
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