void RenderManager::readImageToSurface(const Common::String &fileName, Graphics::Surface &destination, bool transposed) {
Common::File file;
if (!_engine->getSearchManager()->openFile(file, fileName)) {
warning("Could not open file %s", fileName.c_str());
return;
}
// Read the magic number
// Some files are true TGA, while others are TGZ
uint32 fileType = file.readUint32BE();
uint32 imageWidth;
uint32 imageHeight;
Image::TGADecoder tga;
uint16 *buffer;
// All ZVision images are in RGB 555
destination.format = _engine->_resourcePixelFormat;
bool isTGZ;
// Check for TGZ files
if (fileType == MKTAG('T', 'G', 'Z', '\0')) {
isTGZ = true;
// TGZ files have a header and then Bitmap data that is compressed with LZSS
uint32 decompressedSize = file.readSint32LE() / 2;
imageWidth = file.readSint32LE();
imageHeight = file.readSint32LE();
LzssReadStream lzssStream(&file);
buffer = (uint16 *)(new uint16[decompressedSize]);
lzssStream.read(buffer, 2 * decompressedSize);
#ifndef SCUMM_LITTLE_ENDIAN
for (uint32 i = 0; i < decompressedSize; ++i)
buffer[i] = FROM_LE_16(buffer[i]);
#endif
} else {
isTGZ = false;
// Reset the cursor
file.seek(0);
// Decode
if (!tga.loadStream(file)) {
warning("Error while reading TGA image");
return;
}
Graphics::Surface tgaSurface = *(tga.getSurface());
imageWidth = tgaSurface.w;
imageHeight = tgaSurface.h;
buffer = (uint16 *)tgaSurface.getPixels();
}
// Flip the width and height if transposed
if (transposed) {
uint16 temp = imageHeight;
imageHeight = imageWidth;
imageWidth = temp;
}
// If the destination internal buffer is the same size as what we're copying into it,
// there is no need to free() and re-create
if (imageWidth != destination.w || imageHeight != destination.h) {
destination.create(imageWidth, imageHeight, _engine->_resourcePixelFormat);
}
// If transposed, 'un-transpose' the data while copying it to the destination
// Otherwise, just do a simple copy
if (transposed) {
uint16 *dest = (uint16 *)destination.getPixels();
for (uint32 y = 0; y < imageHeight; ++y) {
uint32 columnIndex = y * imageWidth;
for (uint32 x = 0; x < imageWidth; ++x) {
dest[columnIndex + x] = buffer[x * imageHeight + y];
}
}
} else {
memcpy(destination.getPixels(), buffer, imageWidth * imageHeight * destination.format.bytesPerPixel);
}
// Cleanup
if (isTGZ) {
delete[] buffer;
} else {
tga.destroy();
}
}
void RenderManager::readImageToSurface(const Common::String &fileName, Graphics::Surface &destination) {
Common::File file;
if (!file.open(fileName)) {
warning("Could not open file %s", fileName.c_str());
return;
}
// Read the magic number
// Some files are true TGA, while others are TGZ
uint32 fileType = file.readUint32BE();
uint32 imageWidth;
uint32 imageHeight;
Graphics::TGADecoder tga;
uint16 *buffer;
bool isTransposed = _renderTable.getRenderState() == RenderTable::PANORAMA;
// All ZVision images are in RGB 555
Graphics::PixelFormat pixelFormat555 = Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0);
destination.format = pixelFormat555;
bool isTGZ;
// Check for TGZ files
if (fileType == MKTAG('T', 'G', 'Z', '\0')) {
isTGZ = true;
// TGZ files have a header and then Bitmap data that is compressed with LZSS
uint32 decompressedSize = file.readSint32LE();
imageWidth = file.readSint32LE();
imageHeight = file.readSint32LE();
LzssReadStream lzssStream(&file);
buffer = (uint16 *)(new uint16[decompressedSize]);
lzssStream.read(buffer, decompressedSize);
} else {
isTGZ = false;
// Reset the cursor
file.seek(0);
// Decode
if (!tga.loadStream(file)) {
warning("Error while reading TGA image");
return;
}
Graphics::Surface tgaSurface = *(tga.getSurface());
imageWidth = tgaSurface.w;
imageHeight = tgaSurface.h;
buffer = (uint16 *)tgaSurface.getPixels();
}
// Flip the width and height if transposed
if (isTransposed) {
uint16 temp = imageHeight;
imageHeight = imageWidth;
imageWidth = temp;
}
// If the destination internal buffer is the same size as what we're copying into it,
// there is no need to free() and re-create
if (imageWidth != destination.w || imageHeight != destination.h) {
destination.create(imageWidth, imageHeight, pixelFormat555);
}
// If transposed, 'un-transpose' the data while copying it to the destination
// Otherwise, just do a simple copy
if (isTransposed) {
uint16 *dest = (uint16 *)destination.getPixels();
for (uint32 y = 0; y < imageHeight; ++y) {
uint32 columnIndex = y * imageWidth;
for (uint32 x = 0; x < imageWidth; ++x) {
dest[columnIndex + x] = buffer[x * imageHeight + y];
}
}
} else {
memcpy(destination.getPixels(), buffer, imageWidth * imageHeight * _pixelFormat.bytesPerPixel);
}
// Cleanup
if (isTGZ) {
delete[] buffer;
} else {
tga.destroy();
}
// Convert in place to RGB 565 from RGB 555
destination.convertToInPlace(_pixelFormat);
}
