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5234e30578
When we overlay/scanout non-RGB planes we were relying on the default DRM color encoding, which could vary per DRM device. We want this to be consistent across devices and with YUV conversion done by renderers, so change this to always use BT.709 encoding (if the property is available). I've chosen BT.709 because it should be correct for HD video, which is probably most common.
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#ifndef BACKEND_DRM_PROPERTIES_H
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#define BACKEND_DRM_PROPERTIES_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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/*
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* These types contain the property ids for several DRM objects.
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* For more details, see:
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* https://dri.freedesktop.org/docs/drm/gpu/drm-kms.html#kms-properties
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*/
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struct wlr_drm_connector_props {
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uint32_t edid;
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uint32_t dpms;
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uint32_t link_status; // not guaranteed to exist
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uint32_t path;
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uint32_t vrr_capable; // not guaranteed to exist
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uint32_t subconnector; // not guaranteed to exist
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uint32_t non_desktop;
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uint32_t panel_orientation; // not guaranteed to exist
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uint32_t content_type; // not guaranteed to exist
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uint32_t max_bpc; // not guaranteed to exist
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// atomic-modesetting only
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uint32_t crtc_id;
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};
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struct wlr_drm_crtc_props {
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// Neither of these are guaranteed to exist
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uint32_t vrr_enabled;
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uint32_t gamma_lut;
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uint32_t gamma_lut_size;
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// atomic-modesetting only
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uint32_t active;
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uint32_t mode_id;
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uint32_t out_fence_ptr;
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};
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struct wlr_drm_plane_props {
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uint32_t type;
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uint32_t rotation; // Not guaranteed to exist
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uint32_t in_formats; // Not guaranteed to exist
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uint32_t size_hints; // Not guaranteed to exist
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// atomic-modesetting only
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uint32_t src_x;
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uint32_t src_y;
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uint32_t src_w;
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uint32_t src_h;
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uint32_t crtc_x;
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uint32_t crtc_y;
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uint32_t crtc_w;
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uint32_t crtc_h;
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uint32_t fb_id;
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uint32_t crtc_id;
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uint32_t fb_damage_clips;
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uint32_t hotspot_x;
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uint32_t hotspot_y;
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uint32_t in_fence_fd;
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uint32_t color_encoding; // Not guaranteed to exist
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};
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/*
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* The encoding and range enums are defined in the kernel but not
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* exposed in public headers.
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*/
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enum drm_color_encoding {
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DRM_COLOR_YCBCR_BT601,
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DRM_COLOR_YCBCR_BT709,
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DRM_COLOR_YCBCR_BT2020,
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};
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bool get_drm_connector_props(int fd, uint32_t id,
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struct wlr_drm_connector_props *out);
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bool get_drm_crtc_props(int fd, uint32_t id, struct wlr_drm_crtc_props *out);
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bool get_drm_plane_props(int fd, uint32_t id, struct wlr_drm_plane_props *out);
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bool get_drm_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret);
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void *get_drm_prop_blob(int fd, uint32_t obj, uint32_t prop, size_t *ret_len);
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char *get_drm_prop_enum(int fd, uint32_t obj, uint32_t prop);
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bool introspect_drm_prop_range(int fd, uint32_t prop_id,
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uint64_t *min, uint64_t *max);
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#endif
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