59 lines
2.1 KiB
C++
59 lines
2.1 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 2013 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/kernel/fs/devices/disc_image_file.h"
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#include <algorithm>
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#include "xenia/kernel/fs/device.h"
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#include "xenia/kernel/fs/devices/disc_image_entry.h"
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#include "xenia/kernel/fs/gdfx.h"
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namespace xe {
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namespace kernel {
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namespace fs {
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DiscImageFile::DiscImageFile(KernelState* kernel_state, Mode mode,
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DiscImageEntry* entry)
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: XFile(kernel_state, mode), entry_(entry) {}
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DiscImageFile::~DiscImageFile() { delete entry_; }
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const std::string& DiscImageFile::path() const { return entry_->path(); }
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const std::string& DiscImageFile::name() const { return entry_->name(); }
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Device* DiscImageFile::device() const { return entry_->device(); }
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X_STATUS DiscImageFile::QueryInfo(X_FILE_NETWORK_OPEN_INFORMATION* out_info) {
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return entry_->QueryInfo(out_info);
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}
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X_STATUS DiscImageFile::QueryDirectory(X_FILE_DIRECTORY_INFORMATION* out_info, size_t length,
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const char* file_name, bool restart) {
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return entry_->QueryDirectory(out_info, length, file_name, restart);
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}
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X_STATUS DiscImageFile::ReadSync(void* buffer, size_t buffer_length,
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size_t byte_offset, size_t* out_bytes_read) {
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GDFXEntry* gdfx_entry = entry_->gdfx_entry();
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if (byte_offset >= gdfx_entry->size) {
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return X_STATUS_END_OF_FILE;
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}
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size_t real_offset = gdfx_entry->offset + byte_offset;
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size_t real_length = std::min(buffer_length, gdfx_entry->size - byte_offset);
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memcpy(buffer, entry_->mmap()->data() + real_offset, real_length);
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*out_bytes_read = real_length;
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return X_STATUS_SUCCESS;
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}
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} // namespace fs
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} // namespace kernel
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} // namespace xe
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