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598bde5846
This wasn't caught by ASan in CI because we don't have a blob with color point descriptors. Signed-off-by: Simon Ser <contact@emersion.fr>
158 lines
4.8 KiB
C
158 lines
4.8 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 <stdio.h>
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#include <libdisplay-info/edid.h>
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#include "cta.h"
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#include "displayid.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 maximum number of EDID standard timings, defined in section 3.9.
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*/
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#define EDID_MAX_STANDARD_TIMING_COUNT 8
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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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/**
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* The size of an EDID byte descriptor, defined in section 3.10.
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*/
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#define EDID_BYTE_DESCRIPTOR_SIZE 18
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/**
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* The maximum number of standard timings in an EDID display descriptor, defined
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* in section 3.10.3.6.
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*/
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#define EDID_MAX_DESCRIPTOR_STANDARD_TIMING_COUNT 6
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/**
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* The maximum number of color points in an EDID color point descriptor, defined
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* in section 3.10.3.5.
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*/
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#define EDID_MAX_DESCRIPTOR_COLOR_POINT_COUNT 2
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/**
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* The maximum number of established timings III in an EDID display descriptor,
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* defined in section 3.10.3.9.
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*/
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#define EDID_MAX_DESCRIPTOR_ESTABLISHED_TIMING_III_COUNT 44
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/**
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* The maximum number of CVT timing codes in an EDID display descriptor,
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* defined in section 3.10.3.8.
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*/
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#define EDID_MAX_DESCRIPTOR_CVT_TIMING_CODES_COUNT 4
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struct di_edid_detailed_timing_def_priv {
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struct di_edid_detailed_timing_def base;
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struct di_edid_detailed_timing_analog_composite analog_composite;
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struct di_edid_detailed_timing_bipolar_analog_composite bipolar_analog_composite;
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struct di_edid_detailed_timing_digital_composite digital_composite;
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struct di_edid_detailed_timing_digital_separate digital_separate;
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};
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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_analog video_input_analog;
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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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struct di_edid_chromaticity_coords chromaticity_coords;
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struct di_edid_established_timings_i_ii established_timings_i_ii;
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/* NULL-terminated */
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struct di_edid_standard_timing *standard_timings[EDID_MAX_STANDARD_TIMING_COUNT + 1];
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size_t standard_timings_len;
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/* NULL-terminated */
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struct di_edid_detailed_timing_def_priv *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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struct di_logger *logger;
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};
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struct di_edid_display_range_limits_priv {
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struct di_edid_display_range_limits base;
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struct di_edid_display_range_limits_secondary_gtf secondary_gtf;
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struct di_edid_display_range_limits_cvt cvt;
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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_priv range_limits;
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/* Used for STD_TIMING_IDS, NULL-terminated */
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struct di_edid_standard_timing *standard_timings[EDID_MAX_DESCRIPTOR_STANDARD_TIMING_COUNT + 1];
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size_t standard_timings_len;
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/* Used for COLOR_POINT, NULL-terminated */
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struct di_edid_color_point *color_points[EDID_MAX_DESCRIPTOR_COLOR_POINT_COUNT + 1];
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size_t color_points_len;
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/* Used for ESTABLISHED_TIMINGS_III, NULL-terminated */
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const struct di_dmt_timing *established_timings_iii[EDID_MAX_DESCRIPTOR_ESTABLISHED_TIMING_III_COUNT + 1];
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size_t established_timings_iii_len;
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/* Used for DCM_DATA */
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struct di_edid_color_management_data dcm_data;
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/* Used for CVT_TIMING_CODES, NULL-terminated */
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struct di_edid_cvt_timing_code *cvt_timing_codes[EDID_MAX_DESCRIPTOR_CVT_TIMING_CODES_COUNT + 1];
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size_t cvt_timing_codes_len;
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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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/* Used for DI_EDID_EXT_CEA */
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struct di_edid_cta cta;
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/* Used for DI_EDID_EXT_DISPLAYID */
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struct di_displayid displayid;
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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, FILE *failure_msg_file);
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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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/**
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* Parse an EDID detailed timing definition.
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*/
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struct di_edid_detailed_timing_def_priv *
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_di_edid_parse_detailed_timing_def(const uint8_t data[static EDID_BYTE_DESCRIPTOR_SIZE]);
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#endif
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