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C++ IOFile::Seek方法代码示例

本文整理汇总了C++中file::IOFile::Seek方法的典型用法代码示例。如果您正苦于以下问题：C++ IOFile::Seek方法的具体用法？C++ IOFile::Seek怎么用？C++ IOFile::Seek使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类file::IOFile的用法示例。


在下文中一共展示了IOFile::Seek方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: WriteMemoryUpdates

u64 FifoDataFile::WriteMemoryUpdates(const std::vector<MemoryUpdate>& memUpdates,
                                     File::IOFile& file)
{
  // Add space for memory update list
  u64 updateListOffset = file.Tell();
  PadFile(memUpdates.size() * sizeof(FileMemoryUpdate), file);

  for (unsigned int i = 0; i < memUpdates.size(); ++i)
  {
    const MemoryUpdate& srcUpdate = memUpdates[i];

    // Write memory
    file.Seek(0, SEEK_END);
    u64 dataOffset = file.Tell();
    file.WriteBytes(srcUpdate.data.data(), srcUpdate.data.size());

    FileMemoryUpdate dstUpdate;
    dstUpdate.address = srcUpdate.address;
    dstUpdate.dataOffset = dataOffset;
    dstUpdate.dataSize = static_cast<u32>(srcUpdate.data.size());
    dstUpdate.fifoPosition = srcUpdate.fifoPosition;
    dstUpdate.type = srcUpdate.type;

    u64 updateOffset = updateListOffset + (i * sizeof(FileMemoryUpdate));
    file.Seek(updateOffset, SEEK_SET);
    file.WriteBytes(&dstUpdate, sizeof(FileMemoryUpdate));
  }

  return updateListOffset;
}
开发者ID:spankminister，项目名称:dolphin，代码行数:30，代码来源:FifoDataFile.cpp

示例2: UpdateStateFlags

void UpdateStateFlags(std::function<void(StateFlags*)> update_function)
{
  const std::string file_path =
    Common::GetTitleDataPath(Titles::SYSTEM_MENU, Common::FROM_SESSION_ROOT) + WII_STATE;

  File::IOFile file;
  StateFlags state;
  if (File::Exists(file_path))
  {
    file.Open(file_path, "r+b");
    file.ReadBytes(&state, sizeof(state));
  }
  else
  {
    File::CreateFullPath(file_path);
    file.Open(file_path, "a+b");
    memset(&state, 0, sizeof(state));
  }

  update_function(&state);
  state.UpdateChecksum();

  file.Seek(0, SEEK_SET);
  file.WriteBytes(&state, sizeof(state));
}
开发者ID:Tinob，项目名称:Ishiiruka，代码行数:25，代码来源:Boot.cpp

示例3: CISOFileReader

std::unique_ptr<CISOFileReader> CISOFileReader::Create(File::IOFile file)
{
    CISOHeader header;
    if (file.Seek(0, SEEK_SET) && file.ReadArray(&header, 1) && header.magic == CISO_MAGIC)
        return std::unique_ptr<CISOFileReader>(new CISOFileReader(std::move(file)));

    return nullptr;
}
开发者ID:Tinob，项目名称:Ishiiruka，代码行数:8，代码来源:CISOBlob.cpp

示例4: ReadMemoryUpdates

void FifoDataFile::ReadMemoryUpdates(u64 fileOffset, u32 numUpdates,
                                     std::vector<MemoryUpdate>& memUpdates, File::IOFile& file)
{
  memUpdates.resize(numUpdates);

  for (u32 i = 0; i < numUpdates; ++i)
  {
    u64 updateOffset = fileOffset + (i * sizeof(FileMemoryUpdate));
    file.Seek(updateOffset, SEEK_SET);
    FileMemoryUpdate srcUpdate;
    file.ReadBytes(&srcUpdate, sizeof(FileMemoryUpdate));

    MemoryUpdate& dstUpdate = memUpdates[i];
    dstUpdate.address = srcUpdate.address;
    dstUpdate.fifoPosition = srcUpdate.fifoPosition;
    dstUpdate.data.resize(srcUpdate.dataSize);
    dstUpdate.type = static_cast<MemoryUpdate::Type>(srcUpdate.type);

    file.Seek(srcUpdate.dataOffset, SEEK_SET);
    file.ReadBytes(dstUpdate.data.data(), srcUpdate.dataSize);
  }
}
开发者ID:spankminister，项目名称:dolphin，代码行数:22，代码来源:FifoDataFile.cpp

示例5: GetNextBlock

void GetNextBlock(File::IOFile& in, u8* buffer)
{
	u64 CurrentOffset = m_BlockCount * m_BlockSize;
	u64 i = CurrentOffset / CLUSTER_SIZE;

	if (m_isScrubbing && m_FreeTable[i])
	{
		DEBUG_LOG(DISCIO, "Freeing 0x%016" PRIx64, CurrentOffset);
		std::fill(buffer, buffer + m_BlockSize, 0xFF);
		in.Seek(m_BlockSize, SEEK_CUR);
	}
	else
	{
		DEBUG_LOG(DISCIO, "Used    0x%016" PRIx64, CurrentOffset);
		in.ReadBytes(buffer, m_BlockSize);
	}

	m_BlockCount++;
}
开发者ID:Idan345，项目名称:dolphin，代码行数:19，代码来源:DiscScrubber.cpp

示例6: GetNextBlock

size_t GetNextBlock(File::IOFile& in, u8* buffer)
{
	u64 CurrentOffset = m_BlockCount * m_BlockSize;
	u64 i = CurrentOffset / CLUSTER_SIZE;

	size_t ReadBytes = 0;
	if (m_isScrubbing && m_FreeTable[i])
	{
		DEBUG_LOG(DISCIO, "Freeing 0x%016llx", CurrentOffset);
		std::fill(buffer, buffer + m_BlockSize, 0xFF);
		in.Seek(m_BlockSize, SEEK_CUR);
		ReadBytes = m_BlockSize;
	}
	else
	{
		DEBUG_LOG(DISCIO, "Used    0x%016llx", CurrentOffset);
		in.ReadArray(buffer, m_BlockSize, &ReadBytes);
	}

	m_BlockCount++;
	return ReadBytes;
}
开发者ID:BrunoLopesBLDS，项目名称:dolphin，代码行数:22，代码来源:DiscScrubber.cpp

示例7: 

BootExecutableReader::BootExecutableReader(File::IOFile file)
{
  file.Seek(0, SEEK_SET);
  m_bytes.resize(file.GetSize());
  file.ReadBytes(m_bytes.data(), m_bytes.size());
}
开发者ID:Tinob，项目名称:Ishiiruka，代码行数:6，代码来源:Boot.cpp

示例8: Save

bool FifoDataFile::Save(const std::string& filename)
{
  File::IOFile file;
  if (!file.Open(filename, "wb"))
    return false;

  // Add space for header
  PadFile(sizeof(FileHeader), file);

  // Add space for frame list
  u64 frameListOffset = file.Tell();
  PadFile(m_Frames.size() * sizeof(FileFrameInfo), file);

  u64 bpMemOffset = file.Tell();
  file.WriteArray(m_BPMem, BP_MEM_SIZE);

  u64 cpMemOffset = file.Tell();
  file.WriteArray(m_CPMem, CP_MEM_SIZE);

  u64 xfMemOffset = file.Tell();
  file.WriteArray(m_XFMem, XF_MEM_SIZE);

  u64 xfRegsOffset = file.Tell();
  file.WriteArray(m_XFRegs, XF_REGS_SIZE);

  u64 texMemOffset = file.Tell();
  file.WriteArray(m_TexMem, TEX_MEM_SIZE);

  // Write header
  FileHeader header;
  header.fileId = FILE_ID;
  header.file_version = VERSION_NUMBER;
  header.min_loader_version = MIN_LOADER_VERSION;

  header.bpMemOffset = bpMemOffset;
  header.bpMemSize = BP_MEM_SIZE;

  header.cpMemOffset = cpMemOffset;
  header.cpMemSize = CP_MEM_SIZE;

  header.xfMemOffset = xfMemOffset;
  header.xfMemSize = XF_MEM_SIZE;

  header.xfRegsOffset = xfRegsOffset;
  header.xfRegsSize = XF_REGS_SIZE;

  header.texMemOffset = texMemOffset;
  header.texMemSize = TEX_MEM_SIZE;

  header.frameListOffset = frameListOffset;
  header.frameCount = (u32)m_Frames.size();

  header.flags = m_Flags;

  file.Seek(0, SEEK_SET);
  file.WriteBytes(&header, sizeof(FileHeader));

  // Write frames list
  for (unsigned int i = 0; i < m_Frames.size(); ++i)
  {
    const FifoFrameInfo& srcFrame = m_Frames[i];

    // Write FIFO data
    file.Seek(0, SEEK_END);
    u64 dataOffset = file.Tell();
    file.WriteBytes(srcFrame.fifoData.data(), srcFrame.fifoData.size());

    u64 memoryUpdatesOffset = WriteMemoryUpdates(srcFrame.memoryUpdates, file);

    FileFrameInfo dstFrame;
    dstFrame.fifoDataSize = static_cast<u32>(srcFrame.fifoData.size());
    dstFrame.fifoDataOffset = dataOffset;
    dstFrame.fifoStart = srcFrame.fifoStart;
    dstFrame.fifoEnd = srcFrame.fifoEnd;
    dstFrame.memoryUpdatesOffset = memoryUpdatesOffset;
    dstFrame.numMemoryUpdates = static_cast<u32>(srcFrame.memoryUpdates.size());

    // Write frame info
    u64 frameOffset = frameListOffset + (i * sizeof(FileFrameInfo));
    file.Seek(frameOffset, SEEK_SET);
    file.WriteBytes(&dstFrame, sizeof(FileFrameInfo));
  }

  if (!file.Close())
    return false;

  return true;
}
开发者ID:spankminister，项目名称:dolphin，代码行数:88，代码来源:FifoDataFile.cpp

示例9: sizeof

std::unique_ptr<FifoDataFile> FifoDataFile::Load(const std::string& filename, bool flagsOnly)
{
  File::IOFile file;
  file.Open(filename, "rb");
  if (!file)
    return nullptr;

  FileHeader header;
  file.ReadBytes(&header, sizeof(header));

  if (header.fileId != FILE_ID || header.min_loader_version > VERSION_NUMBER)
  {
    file.Close();
    return nullptr;
  }

  auto dataFile = std::make_unique<FifoDataFile>();

  dataFile->m_Flags = header.flags;
  dataFile->m_Version = header.file_version;

  if (flagsOnly)
  {
    file.Close();
    return dataFile;
  }

  u32 size = std::min<u32>(BP_MEM_SIZE, header.bpMemSize);
  file.Seek(header.bpMemOffset, SEEK_SET);
  file.ReadArray(dataFile->m_BPMem, size);

  size = std::min<u32>(CP_MEM_SIZE, header.cpMemSize);
  file.Seek(header.cpMemOffset, SEEK_SET);
  file.ReadArray(dataFile->m_CPMem, size);

  size = std::min<u32>(XF_MEM_SIZE, header.xfMemSize);
  file.Seek(header.xfMemOffset, SEEK_SET);
  file.ReadArray(dataFile->m_XFMem, size);

  size = std::min<u32>(XF_REGS_SIZE, header.xfRegsSize);
  file.Seek(header.xfRegsOffset, SEEK_SET);
  file.ReadArray(dataFile->m_XFRegs, size);

  // Texture memory saving was added in version 4.
  std::memset(dataFile->m_TexMem, 0, TEX_MEM_SIZE);
  if (dataFile->m_Version >= 4)
  {
    size = std::min<u32>(TEX_MEM_SIZE, header.texMemSize);
    file.Seek(header.texMemOffset, SEEK_SET);
    file.ReadArray(dataFile->m_TexMem, size);
  }

  // Read frames
  for (u32 i = 0; i < header.frameCount; ++i)
  {
    u64 frameOffset = header.frameListOffset + (i * sizeof(FileFrameInfo));
    file.Seek(frameOffset, SEEK_SET);
    FileFrameInfo srcFrame;
    file.ReadBytes(&srcFrame, sizeof(FileFrameInfo));

    FifoFrameInfo dstFrame;
    dstFrame.fifoData.resize(srcFrame.fifoDataSize);
    dstFrame.fifoStart = srcFrame.fifoStart;
    dstFrame.fifoEnd = srcFrame.fifoEnd;

    file.Seek(srcFrame.fifoDataOffset, SEEK_SET);
    file.ReadBytes(dstFrame.fifoData.data(), srcFrame.fifoDataSize);

    ReadMemoryUpdates(srcFrame.memoryUpdatesOffset, srcFrame.numMemoryUpdates,
                      dstFrame.memoryUpdates, file);

    dataFile->AddFrame(dstFrame);
  }

  file.Close();

  return dataFile;
}
开发者ID:spankminister，项目名称:dolphin，代码行数:78，代码来源:FifoDataFile.cpp

示例10: sizeof

FifoDataFile *FifoDataFile::Load(const std::string &filename, bool flagsOnly)
{
	File::IOFile file;
	file.Open(filename, "rb");
	if (!file)
		return nullptr;

	FileHeader header;
	file.ReadBytes(&header, sizeof(header));

	if (header.fileId != FILE_ID || header.min_loader_version > VERSION_NUMBER)
	{
		file.Close();
		return nullptr;
	}

	FifoDataFile* dataFile = new FifoDataFile;

	dataFile->m_Flags = header.flags;

	if (flagsOnly)
	{
		file.Close();
		return dataFile;
	}

	u32 size = std::min((u32)BP_MEM_SIZE, header.bpMemSize);
	file.Seek(header.bpMemOffset, SEEK_SET);
	file.ReadArray(dataFile->m_BPMem, size);

	size = std::min((u32)CP_MEM_SIZE, header.cpMemSize);
	file.Seek(header.cpMemOffset, SEEK_SET);
	file.ReadArray(dataFile->m_CPMem, size);

	size = std::min((u32)XF_MEM_SIZE, header.xfMemSize);
	file.Seek(header.xfMemOffset, SEEK_SET);
	file.ReadArray(dataFile->m_XFMem, size);

	size = std::min((u32)XF_REGS_SIZE, header.xfRegsSize);
	file.Seek(header.xfRegsOffset, SEEK_SET);
	file.ReadArray(dataFile->m_XFRegs, size);

	// Read frames
	for (u32 i = 0; i < header.frameCount; ++i)
	{
		u64 frameOffset = header.frameListOffset + (i * sizeof(FileFrameInfo));
		file.Seek(frameOffset, SEEK_SET);
		FileFrameInfo srcFrame;
		file.ReadBytes(&srcFrame, sizeof(FileFrameInfo));

		FifoFrameInfo dstFrame;
		dstFrame.fifoData = new u8[srcFrame.fifoDataSize];
		dstFrame.fifoDataSize = srcFrame.fifoDataSize;
		dstFrame.fifoStart = srcFrame.fifoStart;
		dstFrame.fifoEnd = srcFrame.fifoEnd;

		file.Seek(srcFrame.fifoDataOffset, SEEK_SET);
		file.ReadBytes(dstFrame.fifoData, srcFrame.fifoDataSize);

		ReadMemoryUpdates(srcFrame.memoryUpdatesOffset, srcFrame.numMemoryUpdates, dstFrame.memoryUpdates, file);

		dataFile->AddFrame(dstFrame);
	}

	file.Close();

	return dataFile;
}
开发者ID:mbishop0051，项目名称:dolphin，代码行数:68，代码来源:FifoDataFile.cpp


注：本文中的file::IOFile::Seek方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。