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[fs/core] Load external content without NAND install (#2862)

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Adds the capability to add DLC and Updates without installing them to NAND. This was tested on Windows only and needs Android integration.

Co-authored-by: crueter <crueter@eden-emu.dev>
Co-authored-by: wildcard <wildcard@eden-emu.dev>
Co-authored-by: nekle <nekle@protonmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2862
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>
This commit is contained in:
Maufeat
2026-02-06 14:05:44 +01:00
committed by crueter
parent e07e269bd7
commit 69aff83ef4
40 changed files with 1790 additions and 126 deletions
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src/core/file_sys/registered_cache.h
+56 -1
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@@ -1,3 +1,6 @@
// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
@@ -14,7 +17,8 @@
#include "core/file_sys/vfs/vfs.h"
namespace FileSys {
class CNMT;
class ExternalContentProvider;
class CNMT;
class NCA;
class NSP;
class XCI;
@@ -48,6 +52,13 @@ struct ContentProviderEntry {
std::string DebugInfo() const;
};
struct ExternalUpdateEntry {
u64 title_id;
u32 version;
std::string version_string;
std::map<ContentRecordType, VirtualFile> files;
};
constexpr u64 GetUpdateTitleID(u64 base_title_id) {
return base_title_id | 0x800;
}
@@ -208,6 +219,7 @@ enum class ContentProviderUnionSlot {
UserNAND, ///< User NAND
SDMC, ///< SD Card
FrontendManual, ///< Frontend-defined game list or similar
External, ///< External content from NSP/XCI files in configured directories
};
// Combines multiple ContentProvider(s) (i.e. SysNAND, UserNAND, SDMC) into one interface.
@@ -228,6 +240,9 @@ public:
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const override;
const ExternalContentProvider* GetExternalProvider() const;
const ContentProvider* GetSlotProvider(ContentProviderUnionSlot slot) const;
std::vector<std::pair<ContentProviderUnionSlot, ContentProviderEntry>> ListEntriesFilterOrigin(
std::optional<ContentProviderUnionSlot> origin = {},
std::optional<TitleType> title_type = {}, std::optional<ContentRecordType> record_type = {},
@@ -246,6 +261,8 @@ public:
void AddEntry(TitleType title_type, ContentRecordType content_type, u64 title_id,
VirtualFile file);
void AddEntryWithVersion(TitleType title_type, ContentRecordType content_type, u64 title_id,
u32 version, const std::string& version_string, VirtualFile file);
void ClearAllEntries();
void Refresh() override;
@@ -258,8 +275,46 @@ public:
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const override;
std::vector<ExternalUpdateEntry> ListUpdateVersions(u64 title_id) const;
VirtualFile GetEntryForVersion(u64 title_id, ContentRecordType type, u32 version) const;
bool HasMultipleVersions(u64 title_id, ContentRecordType type) const;
private:
std::map<std::tuple<TitleType, ContentRecordType, u64>, VirtualFile> entries;
std::vector<ExternalUpdateEntry> multi_version_entries;
};
class ExternalContentProvider : public ContentProvider {
public:
explicit ExternalContentProvider(std::vector<VirtualDir> load_directories = {});
~ExternalContentProvider() override;
void AddDirectory(VirtualDir directory);
void ClearDirectories();
void Refresh() override;
bool HasEntry(u64 title_id, ContentRecordType type) const override;
std::optional<u32> GetEntryVersion(u64 title_id) const override;
VirtualFile GetEntryUnparsed(u64 title_id, ContentRecordType type) const override;
VirtualFile GetEntryRaw(u64 title_id, ContentRecordType type) const override;
std::unique_ptr<NCA> GetEntry(u64 title_id, ContentRecordType type) const override;
std::vector<ContentProviderEntry> ListEntriesFilter(
std::optional<TitleType> title_type, std::optional<ContentRecordType> record_type,
std::optional<u64> title_id) const override;
std::vector<ExternalUpdateEntry> ListUpdateVersions(u64 title_id) const;
VirtualFile GetEntryForVersion(u64 title_id, ContentRecordType type, u32 version) const;
bool HasMultipleVersions(u64 title_id, ContentRecordType type) const;
private:
void ScanDirectory(const VirtualDir& dir);
void ProcessNSP(const VirtualFile& file);
void ProcessXCI(const VirtualFile& file);
std::vector<VirtualDir> load_dirs;
std::map<std::tuple<u64, ContentRecordType, TitleType>, VirtualFile> entries;
std::map<u64, u32> versions;
std::vector<ExternalUpdateEntry> multi_version_entries;
};
} // namespace FileSys