C++ IOFile::Open方法代码示例

void StartTrace(bool write)
{
	if (write)
	{
		tracefile.Open("L:\\trace.dat", "wb");
		bReadTrace = false;
		bWriteTrace = true;
	}
	else
	{
		tracefile.Open("L:\\trace.dat", "rb");
		bReadTrace = true;
		bWriteTrace = false;
	}
}

static void LogFPSToFile(unsigned long val)
{
	if (!s_bench_file.IsOpen())
		s_bench_file.Open(File::GetUserPath(D_LOGS_IDX) + "fps.txt", "w");

	char buffer[256];
	snprintf(buffer, 256, "%ld\n", val);
	s_bench_file.WriteArray(buffer, strlen(buffer));
}

static void ImHere()
{
	static File::IOFile f;
	if (ImHereLog)
	{
		if (!f)
		{
#if _M_X86_64
			f.Open("log64.txt", "w");
#else
			f.Open("log32.txt", "w");
#endif
		}
		fprintf(f.GetHandle(), "%08x\n", PC);
	}
	if (been_here.find(PC) != been_here.end())
	{
		been_here.find(PC)->second++;
		if ((been_here.find(PC)->second) & 1023)
			return;
	}
	DEBUG_LOG(DYNA_REC, "I'm here - PC = %08x , LR = %08x", PC, LR);
	been_here[PC] = 1;
}

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;
}

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;
}

bool ImageLoader::ReadPNG(ImageLoaderParams &ImgInfo)
{
	// Set up libpng reading.
	png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, nullptr, PNGErrorFn, PNGWarnFn);
	if (!png_ptr)
		return false;
	png_infop info_ptr = png_create_info_struct(png_ptr);
	if (!info_ptr)
	{
		png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
		return false;
	}
	png_infop end_info = png_create_info_struct(png_ptr);
	if (!end_info)
	{
		png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
		return false;
	}
	if (setjmp(png_jmpbuf(png_ptr)))
	{
		png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
		return false;
	}
	// We read using a FILE*; this could be changed.
	File::IOFile file;
	if (!file.Open(ImgInfo.Path, "rb"))
	{
		return false;
	}
	png_init_io(png_ptr, file.GetHandle());
	png_set_sig_bytes(png_ptr, 0);
	// Process PNG header, etc.
	png_read_info(png_ptr, info_ptr);
	png_uint_32 width, height;
	int bit_depth, color_type, interlace_type, compression_type, filter_method;
	png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, &compression_type, &filter_method);
	// Force RGB (8 or 16-bit).
	if (color_type == PNG_COLOR_TYPE_PALETTE)
		png_set_palette_to_rgb(png_ptr);
	if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
		png_set_expand_gray_1_2_4_to_8(png_ptr);
	if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
		png_set_gray_to_rgb(png_ptr);
	// Force 8-bit RGB.
	if (bit_depth == 16)
		png_set_strip_16(png_ptr);
	// Force alpha channel (combined with the above, 8-bit RGBA).
	if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
		png_set_tRNS_to_alpha(png_ptr);
	else if ((color_type & PNG_COLOR_MASK_ALPHA) == 0)
		png_set_add_alpha(png_ptr, 0xFF, PNG_FILLER_AFTER);
	png_read_update_info(png_ptr, info_ptr);
	ImgInfo.Width = width;
	ImgInfo.Height = height;
	ImgInfo.data_size = width * height * 4;
	ImgInfo.dst = ImgInfo.request_buffer_delegate(ImgInfo.data_size, false);
	std::vector<u8*> row_pointers(height);
	u8* row_pointer = ImgInfo.dst;
	for (unsigned i = 0; i < height; ++i)
	{
		row_pointers[i] = row_pointer;
		row_pointer += width * 4;
	}
	png_read_image(png_ptr, row_pointers.data());
	png_read_end(png_ptr, end_info);
	png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
	return true;
}

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;
}