C++ (Cpp) readRLEImageData Examples

Example #1

File: CImageLoaderPSD.cpp Project: Aeshylus/Test

//! creates a surface from the file
IImage* CImageLoaderPSD::loadImage(io::IReadFile* file) const
{
	u32* imageData = 0;

	PsdHeader header;
	file->read(&header, sizeof(PsdHeader));

#ifndef __BIG_ENDIAN__
	header.version = os::Byteswap::byteswap(header.version);
	header.channels = os::Byteswap::byteswap(header.channels);
	header.height = os::Byteswap::byteswap(header.height);
	header.width = os::Byteswap::byteswap(header.width);
	header.depth = os::Byteswap::byteswap(header.depth);
	header.mode = os::Byteswap::byteswap(header.mode);
#endif

	if (header.signature[0] != '8' ||
		header.signature[1] != 'B' ||
		header.signature[2] != 'P' ||
		header.signature[3] != 'S')
		return 0;

	if (header.version != 1)
	{
		os::Printer::log("Unsupported PSD file version", file->getFileName(), ELL_ERROR);
		return 0;
	}

	if (header.mode != 3 || header.depth != 8)
	{
		os::Printer::log("Unsupported PSD color mode or depth.\n", file->getFileName(), ELL_ERROR);
		return 0;
	}

	// skip color mode data

	u32 l;
	file->read(&l, sizeof(u32));
#ifndef __BIG_ENDIAN__
	l = os::Byteswap::byteswap(l);
#endif
	if (!file->seek(l, true))
	{
		os::Printer::log("Error seeking file pos to image resources.\n", file->getFileName(), ELL_ERROR);
		return 0;
	}

	// skip image resources

	file->read(&l, sizeof(u32));
#ifndef __BIG_ENDIAN__
	l = os::Byteswap::byteswap(l);
#endif
	if (!file->seek(l, true))
	{
		os::Printer::log("Error seeking file pos to layer and mask.\n", file->getFileName(), ELL_ERROR);
		return 0;
	}

	// skip layer & mask

	file->read(&l, sizeof(u32));
#ifndef __BIG_ENDIAN__
	l = os::Byteswap::byteswap(l);
#endif
	if (!file->seek(l, true))
	{
		os::Printer::log("Error seeking file pos to image data section.\n", file->getFileName(), ELL_ERROR);
		return 0;
	}

	// read image data

	u16 compressionType;
	file->read(&compressionType, sizeof(u16));
#ifndef __BIG_ENDIAN__
	compressionType = os::Byteswap::byteswap(compressionType);
#endif

	if (compressionType != 1 && compressionType != 0)
	{
		os::Printer::log("Unsupported psd compression mode.\n", file->getFileName(), ELL_ERROR);
		return 0;
	}

	// create image data block

	imageData = new u32[header.width * header.height];

	bool res = false;

	if (compressionType == 0)
		res = readRawImageData(file, header, imageData); // RAW image data
	else
		res = readRLEImageData(file, header, imageData); // RLE compressed data

	video::IImage* image = 0;

	if (res)
	{
		// create surface
		image = new CImage(ECF_A8R8G8B8,
			core::dimension2d<u32>(header.width, header.height), imageData);
	}

	if (!image)
		delete [] imageData;
	imageData = 0;

	return image;
}

Example #2

File: CImageLoaderPSD.cpp Project: zdementor/my-base

//! creates a surface from the file
IImage* CImageLoaderPSD::loadImage(io::IReadFile* file)
{
    delete [] imageData;
    imageData = 0;

    file->seek(0);
    file->read(&header, sizeof(PsdHeader));

    header.version = convert2le(header.version);
    header.channels = convert2le(header.channels);
    header.height = convert2le(header.height);
    header.width = convert2le(header.width);
    header.depth = convert2le(header.depth);
    header.mode = convert2le(header.mode);

    if (header.signature[0] != '8' ||
        header.signature[1] != 'B' ||
        header.signature[2] != 'P' ||
        header.signature[3] != 'S')
        return 0;

    if (header.version != 1)
    {
        LOGGER.log("Unsupported PSD file version", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    if (header.mode != 3 || header.depth != 8)
    {
        LOGGER.log("Unsupported PSD color mode or depth. ", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    // skip color mode data

    u32 l;
    file->read(&l, sizeof(s32));
    l = convert2le(l);
    if (!file->seek(l, true))
    {
        LOGGER.log("Error seeking file pos to image resources. ", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    // skip image resources

    file->read(&l, sizeof(s32));
    l = convert2le(l);
    if (!file->seek(l, true))
    {
        LOGGER.log("Error seeking file pos to layer and mask. ", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    // skip layer & mask

    file->read(&l, sizeof(s32));
    l = convert2le(l);
    if (!file->seek(l, true))
    {
        LOGGER.log("Error seeking file pos to image data section. ", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    // read image data

    u16 compressionType;
    file->read(&compressionType, sizeof(u16));
    compressionType = convert2le(compressionType);

    if (compressionType != 1 && compressionType != 0)
    {
        LOGGER.log("Unsupported psd compression mode. ", file->getFileName(), io::ELL_ERROR);
        return 0;
    }

    // create image data block

    imageData = new u32[header.width * header.height];

    bool res = false;

    if (compressionType == 0)
        res = readRawImageData(file);   // RAW image data
    else
        res = readRLEImageData(file); // RLE compressed data

    IImage* image = 0;

    if (res)
    {
        // create surface
        image = new CImage(ECF_A8R8G8B8, core::dimension2d<s32>(header.width, header.height), imageData);
    }

    if (!image)
        delete [] imageData;
    imageData = 0;

    return image;
}