ByteStream BuiltinProtocolHandlersLocal::read(size_t nbytes)
{
if (d->m_fd == -1) {
return ByteStream();
}
ichar resBuffer[nbytes];
const size_t bytesRead = ::read(d->m_fd, resBuffer, nbytes);
if (bytesRead) {
return ByteStream(resBuffer, bytesRead);
}
return ByteStream();
}
ByteStream BuiltinProtocolHandlersHttp::read(size_t nbytes)
{
if (d->m_sockfd == -1) {
return ByteStream();
}
ichar *buf = (ichar*) calloc(d->m_bufferSize + 1, sizeof(ichar));
const ssize_t bytesRead = recv(d->m_sockfd, buf, d->m_bufferSize, 0);
if (bytesRead > 0) {
ByteStream res(buf, bytesRead);
free(buf);
return res;
}
free(buf);
return ByteStream();
}
RawImage PefDecoder::decodeRawInternal() {
auto raw = mRootIFD->getIFDWithTag(STRIPOFFSETS);
int compression = raw->getEntry(COMPRESSION)->getU32();
if (1 == compression || compression == 32773) {
decodeUncompressed(raw, BitOrder_MSB);
return mRaw;
}
if (65535 != compression)
ThrowRDE("Unsupported compression");
TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);
if (offsets->count != 1) {
ThrowRDE("Multiple Strips found: %u", offsets->count);
}
if (counts->count != offsets->count) {
ThrowRDE(
"Byte count number does not match strip size: count:%u, strips:%u ",
counts->count, offsets->count);
}
if (!mFile->isValid(offsets->getU32(), counts->getU32()))
ThrowRDE("Truncated file.");
uint32 width = raw->getEntry(IMAGEWIDTH)->getU32();
uint32 height = raw->getEntry(IMAGELENGTH)->getU32();
mRaw->dim = iPoint2D(width, height);
mRaw->createData();
try {
PentaxDecompressor::decompress(
mRaw, ByteStream(mFile, offsets->getU32(), counts->getU32()),
getRootIFD());
} catch (IOException &e) {
mRaw->setError(e.what());
// Let's ignore it, it may have delivered somewhat useful data.
}
return mRaw;
}
