mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Matthew Stanley
56 lines
2.6 KiB
C++
56 lines
2.6 KiB
C++
// disc_identity.h — disc-image identification + verification.
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//
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// Single source of truth for "is this the right disc?". Reads a .cue, raw
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// .bin/.iso, or CHD, checks for the ISO9660 PVD, extracts the volume id and the
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// PlayStation boot serial (from SYSTEM.CNF), derives the region from the
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// serial prefix, and optionally compares against an expected serial / CRC32.
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//
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// Used both by the runtime's launch-time disc check (runtime/src/main.cpp)
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// and by the shared launcher's "Disc verified" badge, so
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// the two never drift apart.
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#pragma once
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#include <cstdint>
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#include <filesystem>
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#include <string>
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namespace PSXRecompV4 {
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struct DiscIdentity {
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bool opened = false; // data image opened (including decoded CHD)
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bool has_header = false; // ISO9660 "CD001" PVD found at a PS1 disc offset
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std::string volume_id; // PVD volume identifier (trimmed), "" if none
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std::string detected_serial; // serial parsed from SYSTEM.CNF BOOT line, normalized
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// to the "SCUS-94236" form; "" if not found
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std::string region; // "NTSC-U" | "NTSC-J" | "PAL" derived from the serial
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// prefix (detected first, else expected); "" if unknown
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// Serial comparison vs the expected game id (only meaningful when one was given).
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bool expected_serial_given = false;
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bool serial_matches = false; // expected serial present in early disc metadata
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// Full-file CRC32 (IEEE 802.3 over the data track / image bytes).
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bool crc_computed = false;
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uint32_t crc = 0;
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bool expected_crc_given = false;
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bool crc_matches = false;
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std::string detail; // human-readable note (failure reason or extra info)
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};
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// Identify and (optionally) verify a disc image.
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// path : a .cue, raw .bin/.iso, or .chd image
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// expected_serial : the game id, e.g. "SCUS-94236" ("" skips the serial check)
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// expected_crc : full-file CRC32 to match against
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// has_expected_crc : whether expected_crc is meaningful
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// compute_crc : compute the full-file CRC32 (streamed; can be slow on big
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// images — callers typically only request it when there is an
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// expected CRC to compare against)
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DiscIdentity identify_disc(const std::filesystem::path& path,
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const std::string& expected_serial,
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uint32_t expected_crc, bool has_expected_crc,
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bool compute_crc);
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} // namespace PSXRecompV4
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