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78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
#ifndef EDID_H
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#define EDID_H
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/**
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* Private header for the low-level EDID API.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <libdisplay-info/edid.h>
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/**
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* The maximum number of EDID blocks (including the base block), defined in
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* section 2.2.1.
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*/
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#define EDID_MAX_BLOCK_COUNT 256
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/**
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* The number of EDID byte descriptors, defined in section 3.10.
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*/
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#define EDID_BYTE_DESCRIPTOR_COUNT 4
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struct di_edid {
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struct di_edid_vendor_product vendor_product;
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int version, revision;
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bool is_digital;
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struct di_edid_video_input_digital video_input_digital;
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struct di_edid_screen_size screen_size;
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float gamma;
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struct di_edid_dpms dpms;
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enum di_edid_display_color_type display_color_type;
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struct di_edid_color_encoding_formats color_encoding_formats;
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struct di_edid_misc_features misc_features;
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/* NULL-terminated */
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struct di_edid_detailed_timing_def *detailed_timing_defs[EDID_BYTE_DESCRIPTOR_COUNT + 1];
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size_t detailed_timing_defs_len;
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/* NULL-terminated */
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struct di_edid_display_descriptor *display_descriptors[EDID_BYTE_DESCRIPTOR_COUNT + 1];
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size_t display_descriptors_len;
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/* NULL-terminated, doesn't include the base block */
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struct di_edid_ext *exts[EDID_MAX_BLOCK_COUNT];
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size_t exts_len;
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};
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struct di_edid_display_descriptor {
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enum di_edid_display_descriptor_tag tag;
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/* Used for PRODUCT_SERIAL, DATA_STRING and PRODUCT_NAME,
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* zero-terminated */
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char str[14];
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/* Used for RANGE_LIMITS */
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struct di_edid_display_range_limits range_limits;
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};
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struct di_edid_ext {
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enum di_edid_ext_tag tag;
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};
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/**
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* Create an EDID data structure.
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*
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* Callers do not need to keep the provided data pointer valid after calling
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* this function. Callers should destroy the returned pointer via
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* di_edid_destroy().
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*/
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struct di_edid *
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_di_edid_parse(const void *data, size_t size);
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/**
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* Destroy an EDID data structure.
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*/
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void
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_di_edid_destroy(struct di_edid *edid);
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#endif
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