mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
96 lines
4 KiB
C++
96 lines
4 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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#include <stratosphere/fssystem/fssystem_asynchronous_access.hpp>
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#include <stratosphere/fssystem/fssystem_bucket_tree.hpp>
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#include <stratosphere/fssystem/fssystem_compression_common.hpp>
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namespace ams::fssystem {
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class CompressedStorage : public ::ams::fs::IStorage, public ::ams::fssystem::IAsynchronousAccessSplitter, public ::ams::fs::impl::Newable {
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NON_COPYABLE(CompressedStorage);
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NON_MOVEABLE(CompressedStorage);
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public:
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static constexpr size_t NodeSize = 16_KB;
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using IAllocator = BucketTree::IAllocator;
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struct Entry {
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s64 virt_offset;
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s64 phys_offset;
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CompressionType compression_type;
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s32 phys_size;
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s64 GetPhysicalSize() const {
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return this->phys_size;
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}
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};
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static_assert(util::is_pod<Entry>::value);
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static_assert(sizeof(Entry) == 0x18);
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public:
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static constexpr s64 QueryNodeStorageSize(s32 entry_count) {
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return BucketTree::QueryNodeStorageSize(NodeSize, sizeof(Entry), entry_count);
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}
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static constexpr s64 QueryEntryStorageSize(s32 entry_count) {
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return BucketTree::QueryEntryStorageSize(NodeSize, sizeof(Entry), entry_count);
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}
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private:
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/* TODO: CompressedStorageCore m_core; */
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/* TODO: CacheManager m_cache_manager; */
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public:
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CompressedStorage() { /* ... */ }
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virtual ~CompressedStorage() { this->Finalize(); }
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Result Initialize(MemoryResource *bktr_allocator, IBufferManager *cache_allocator, fs::SubStorage data_storage, fs::SubStorage node_storage, fs::SubStorage entry_storage, s32 bktr_entry_count, size_t block_size_max, size_t continuous_reading_size_max, GetDecompressorFunction get_decompressor, size_t cache_size_0, size_t cache_size_1, s32 max_cache_entries);
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void Finalize() {
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AMS_ABORT("TODO");
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/* m_cache_manager.Finalize(); */
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/* m_core.Finalize(); */
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}
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public:
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virtual Result QueryAppropriateOffset(s64 *out, s64 offset, s64 access_size, s64 alignment_size) override {
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AMS_ABORT("TODO");
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/* return m_core.QueryAppropriateOffsetForAsynchronousAccess(out, offset, access_size, alignment_size); */
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}
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public:
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virtual Result Read(s64 offset, void *buffer, size_t size) override;
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virtual Result OperateRange(void *dst, size_t dst_size, fs::OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override;
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virtual Result GetSize(s64 *out) override {
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AMS_ABORT("TODO");
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/* return m_core.GetSize(out); */
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}
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virtual Result Flush() override {
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return ResultSuccess();
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}
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virtual Result Write(s64 offset, const void *buffer, size_t size) override {
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AMS_UNUSED(offset, buffer, size);
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return fs::ResultUnsupportedOperationInCompressedStorageA();
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}
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virtual Result SetSize(s64 size) override {
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AMS_UNUSED(size);
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/* NOTE: Is Nintendo returning the wrong result here? */
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return fs::ResultUnsupportedOperationInIndirectStorageB();
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}
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};
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}
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