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42 lines
1.4 KiB
42 lines
1.4 KiB
#ifndef BACKEND_DRM_UTIL_H
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#define BACKEND_DRM_UTIL_H
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#include <stdint.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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struct wlr_drm_connector;
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// Calculates a more accurate refresh rate (mHz) than what mode itself provides
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int32_t calculate_refresh_rate(const drmModeModeInfo *mode);
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enum wlr_output_mode_aspect_ratio get_picture_aspect_ratio(const drmModeModeInfo *mode);
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// Returns manufacturer based on pnp id
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const char *get_pnp_manufacturer(const char code[static 3]);
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// Populates the make/model/phys_{width,height} of output from the edid data
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void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data);
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const char *drm_connector_status_str(drmModeConnection status);
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void generate_cvt_mode(drmModeModeInfo *mode, int hdisplay, int vdisplay,
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float vrefresh);
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// Part of match_connectors_with_crtcs
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#define UNMATCHED ((uint32_t)-1)
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/**
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* Tries to match DRM connectors with DRM CRTCs.
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*
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* conns contains an array of bitmasks describing compatible CRTCs. For
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* instance bit 0 set in an connector element means that it's compatible with
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* CRTC 0.
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*
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* prev_crtcs contains connector indices each CRTC was previously matched with,
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* or UNMATCHED.
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*
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* new_crtcs is populated with the new connector indices.
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*/
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void match_connectors_with_crtcs(size_t num_conns,
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const uint32_t conns[static restrict num_conns],
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size_t num_crtcs, const uint32_t prev_crtcs[static restrict num_crtcs],
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uint32_t new_crtcs[static restrict num_crtcs]);
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#endif
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