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deba9ce256
New dolphin-tool command: "header" -b / --block_size -c / --compression -l / --compression_level Informative RVZ/WIA header2 value "compression_level" is now a s32 instead of a u32, because negative compression is a thing. Speaking of, it is now possible to use negative compression levels in dolphin-tool's convert command (not the GUI, though).
73 lines
2 KiB
C++
73 lines
2 KiB
C++
// Copyright 2017 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "DiscIO/VolumeFileBlobReader.h"
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#include <memory>
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#include <string_view>
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#include "DiscIO/Filesystem.h"
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#include "DiscIO/Volume.h"
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namespace DiscIO
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{
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std::unique_ptr<VolumeFileBlobReader> VolumeFileBlobReader::Create(const Volume& volume,
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const Partition& partition,
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std::string_view file_path)
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{
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const FileSystem* file_system = volume.GetFileSystem(partition);
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if (!file_system)
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return nullptr;
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std::unique_ptr<FileInfo> file_info = file_system->FindFileInfo(file_path);
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if (!file_info || file_info->IsDirectory())
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return nullptr;
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return std::unique_ptr<VolumeFileBlobReader>{
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new VolumeFileBlobReader(volume, partition, std::move(file_info))};
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}
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VolumeFileBlobReader::VolumeFileBlobReader(const Volume& volume, const Partition& partition,
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std::unique_ptr<FileInfo> file_info)
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: m_volume(volume), m_partition(partition), m_file_info(std::move(file_info))
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{
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}
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u64 VolumeFileBlobReader::GetDataSize() const
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{
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return m_file_info->GetSize();
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}
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u64 VolumeFileBlobReader::GetRawSize() const
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{
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return GetDataSize();
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}
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u64 VolumeFileBlobReader::GetBlockSize() const
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{
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return m_volume.GetBlobReader().GetBlockSize();
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}
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bool VolumeFileBlobReader::HasFastRandomAccessInBlock() const
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{
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return m_volume.GetBlobReader().HasFastRandomAccessInBlock();
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}
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std::string VolumeFileBlobReader::GetCompressionMethod() const
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{
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return m_volume.GetBlobReader().GetCompressionMethod();
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}
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std::optional<int> VolumeFileBlobReader::GetCompressionLevel() const
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{
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return m_volume.GetBlobReader().GetCompressionLevel();
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}
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bool VolumeFileBlobReader::Read(u64 offset, u64 length, u8* out_ptr)
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{
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if (offset + length > m_file_info->GetSize())
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return false;
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return m_volume.Read(m_file_info->GetOffset() + offset, length, out_ptr, m_partition);
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}
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} // namespace DiscIO
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