55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2020 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/vfs/devices/disc_image_entry.h"
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#include "xenia/base/math.h"
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#include "xenia/vfs/devices/disc_image_file.h"
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namespace xe {
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namespace vfs {
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DiscImageEntry::DiscImageEntry(Device* device, Entry* parent,
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const std::string_view path, MappedMemory* mmap)
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: Entry(device, parent, path),
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mmap_(mmap),
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data_offset_(0),
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data_size_(0) {}
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DiscImageEntry::~DiscImageEntry() = default;
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std::unique_ptr<DiscImageEntry> DiscImageEntry::Create(
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Device* device, Entry* parent, const std::string_view name,
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MappedMemory* mmap) {
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auto path = xe::utf8::join_guest_paths(parent->path(), name);
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auto entry = std::make_unique<DiscImageEntry>(device, parent, path, mmap);
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return std::move(entry);
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}
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X_STATUS DiscImageEntry::Open(uint32_t desired_access, File** out_file) {
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*out_file = new DiscImageFile(desired_access, this);
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return X_STATUS_SUCCESS;
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}
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std::unique_ptr<MappedMemory> DiscImageEntry::OpenMapped(
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MappedMemory::Mode mode, size_t offset, size_t length) {
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if (mode != MappedMemory::Mode::kRead) {
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// Only allow reads.
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return nullptr;
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}
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size_t real_offset = data_offset_ + offset;
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size_t real_length = length ? std::min(length, data_size_) : data_size_;
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return mmap_->Slice(real_offset, real_length);
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}
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bool DiscImageEntry::DeleteEntryInternal(Entry* entry) { return false; }
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} // namespace vfs
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} // namespace xe
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