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53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
#pragma once
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// Superbundle TOC reader and patch writer, ported from ReSkateStudio's
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// sdk/frostbite/toc. The writer rebuilds the bundle and chunk perfect hashes,
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// which is what makes a merged TOC resolvable by the engine.
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#include "binary_bundle.h"
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#include <cstddef>
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#include <cstdint>
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#include <span>
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#include <string>
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#include <vector>
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namespace dingosdk::frostbite {
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inline constexpr std::size_t tocEnvelopeSize = 0x22C;
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struct TocBundle {
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std::string name;
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std::vector<std::byte> region;
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std::uint8_t loadFlag{1};
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};
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struct TocChunk {
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Guid guid;
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CasIdentifier location;
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std::uint32_t offset{};
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std::uint32_t size{};
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bool removed{};
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};
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struct TocDocument {
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std::uint32_t flags{};
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std::vector<TocBundle> bundles;
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std::vector<TocChunk> chunks;
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std::vector<std::int32_t> bundleHashMap;
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std::vector<std::int32_t> chunkHashMap;
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};
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[[nodiscard]] std::uint32_t toc_hash(std::span<const std::byte> key,
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std::uint32_t seed = 0x811C9DC5U) noexcept;
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// Emits a complete patch TOC, envelope included, with uncompressed names.
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[[nodiscard]] std::vector<std::byte> write_patch_toc(std::span<const TocBundle> bundles,
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std::span<const TocChunk> chunks = {},
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std::uint32_t flags = 3);
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[[nodiscard]] TocDocument read_toc(std::span<const std::byte> data,
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std::span<const std::byte> externalBundleData = {});
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void verify_toc(const TocDocument& document);
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} // namespace dingosdk::frostbite
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