void TiffParser::decode(Image* pImage,
const byte* pData,
uint32_t size,
TiffCompFactoryFct createFct,
FindDecoderFct findDecoderFct,
TiffHeaderBase* pHeader)
{
assert(pImage != 0);
assert(pData != 0);
std::auto_ptr<TiffHeaderBase> ph;
if (!pHeader) {
ph = std::auto_ptr<TiffHeaderBase>(new TiffHeade2);
pHeader = ph.get();
}
if (!pHeader->read(pData, size) || pHeader->offset() >= size) {
throw Error(3, "TIFF");
}
TiffComponent::AutoPtr rootDir = createFct(Tag::root, Group::none);
if (0 == rootDir.get()) return;
rootDir->setStart(pData + pHeader->offset());
TiffRwState::AutoPtr state(
new TiffRwState(pHeader->byteOrder(), 0, createFct));
TiffReader reader(pData, size, rootDir.get(), state);
rootDir->accept(reader);
TiffMetadataDecoder decoder(pImage, rootDir.get(), findDecoderFct, 4096);
rootDir->accept(decoder);
} // TiffParser::decode
TiffComponent::AutoPtr TiffParserWorker::parse(
const byte* pData,
uint32_t size,
TiffCompFactoryFct createFct,
TiffHeaderBase* pHeader
)
{
if (pData == 0 || size == 0) return TiffComponent::AutoPtr(0);
if (!pHeader->read(pData, size) || pHeader->offset() >= size) {
throw Error(3, "TIFF");
}
TiffComponent::AutoPtr rootDir = createFct(Tag::root, Group::none);
if (0 != rootDir.get()) {
rootDir->setStart(pData + pHeader->offset());
TiffRwState::AutoPtr state(
new TiffRwState(pHeader->byteOrder(), 0, createFct));
TiffReader reader(pData, size, rootDir.get(), state);
rootDir->accept(reader);
}
return rootDir;
} // TiffParserWorker::parse
