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https://gitlab.freedesktop.org/emersion/libdisplay-info.git
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102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
#ifndef DISPLAYID_H
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#define DISPLAYID_H
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/**
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* Private header for the low-level DisplayID API.
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*/
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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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#include <libdisplay-info/displayid.h>
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#include "log.h"
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/**
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* The maximum number of data blocks in a DisplayID section.
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*
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* A DisplayID section has a payload size of 251 bytes, and each data block has
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* a minimum size of 3 bytes.
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*/
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#define DISPLAYID_MAX_DATA_BLOCKS 83
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/**
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* The maximum number of type I timings in a data block.
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*
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* A DisplayID data block has a maximum payload size of 248 bytes, and each type
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* I timing takes up 20 bytes.
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*/
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#define DISPLAYID_MAX_TYPE_I_TIMINGS 12
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/**
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* The maximum number of type II timings in a data block.
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*
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* A DisplayID data block has a maximum payload size of 248 bytes, and each type
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* I timing takes up 11 bytes.
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*/
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#define DISPLAYID_MAX_TYPE_II_TIMINGS 22
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/**
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* The maxiumum number of type III timings in a data block.
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*
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* A DisplayID data block has a maximum payload size of 248 bytes, and each type
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* III timing takes up 3 bytes.
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*/
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#define DISPLAYID_MAX_TYPE_III_TIMINGS 82
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struct di_displayid {
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int version, revision;
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enum di_displayid_product_type product_type;
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struct di_displayid_data_block *data_blocks[DISPLAYID_MAX_DATA_BLOCKS + 1];
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size_t data_blocks_len;
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struct di_logger *logger;
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};
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struct di_displayid_display_params_priv {
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struct di_displayid_display_params base;
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struct di_displayid_display_params_features features;
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};
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struct di_displayid_tiled_topo_priv {
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struct di_displayid_tiled_topo base;
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struct di_displayid_tiled_topo_caps caps;
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struct di_displayid_tiled_topo_bezel bezel;
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};
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struct di_displayid_data_block {
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enum di_displayid_data_block_tag tag;
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/* Used for TYPE_I_TIMING, NULL-terminated */
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struct di_displayid_type_i_ii_vii_timing *type_i_timings[DISPLAYID_MAX_TYPE_I_TIMINGS + 1];
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size_t type_i_timings_len;
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/* Used for TYPE_II_TIMING, NULL-terminated */
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struct di_displayid_type_i_ii_vii_timing *type_ii_timings[DISPLAYID_MAX_TYPE_II_TIMINGS + 1];
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size_t type_ii_timings_len;
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/* Used for TYPE_III_TIMING, NULL-terminated */
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struct di_displayid_type_iii_timing *type_iii_timings[DISPLAYID_MAX_TYPE_III_TIMINGS + 1];
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size_t type_iii_timings_len;
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/* Used for DISPLAY_PARAMS */
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struct di_displayid_display_params_priv display_params;
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/* Used for TILED_DISPLAY_TOPO */
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struct di_displayid_tiled_topo_priv tiled_topo;
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};
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bool
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_di_displayid_parse(struct di_displayid *displayid, const uint8_t *data,
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size_t size, struct di_logger *logger);
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void
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_di_displayid_finish(struct di_displayid *displayid);
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bool
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_di_displayid_parse_type_1_7_timing(struct di_displayid_type_i_ii_vii_timing *timing,
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struct di_logger *logger,
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const char *prefix,
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const uint8_t *data,
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bool is_type7);
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#endif
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