void NetworkCoding::receiveCodedBlock(NetworkCoding_t networkcoding) {
printf("received coded block=%s\n",networkcoding.getName().c_str());
m_stat.totalBlockReceived++;
std::string parentObjectName = networkcoding.parentObjectName;
printf("unreject=%s\n",parentObjectName.c_str());
this->rejectedobject[parentObjectName] = false;
const bool is_already_completed =
this->networkcodingobjectsreceived.find(parentObjectName) != this->networkcodingobjectsreceived.end();
if(is_already_completed) {
//do nothing
return;
}
trackCodedBlock(parentObjectName,networkcoding);
//check if we already started decoding for this object
if( this->decoder.find(parentObjectName) == this->decoder.end() ) {
//create decoder
std::string randomFileName = "out-"+gen_random_string(10);
size_t blockSize= OBJECT_BLOCK_SIZE;
long fileSize = networkcoding.parentObjectFileSize;
decoderptr _decoder( new codetorrentdecoder(fileSize,randomFileName.c_str(),blockSize));
this->decoder[parentObjectName] = _decoder;
}
std::string blockStorageId = networkcoding.getName();
printf("calling getfile\n");
codedblockptr_t block = getFile(networkcoding.getBlockIdOnly());
printf("after getfile\n");
//TODO read should be threadsafe
//boost::lock_guard<boost::mutex> guard(codedblockstoragemutex);
//codedblockptr block = codedblockstorage[blockStorageId];
decoderptr localDecoder = this->decoder[parentObjectName];
int gen = 0;
bool isHelpful = localDecoder->store_block(gen,block->coeffs,block->sums);
printf("isHelpful=%d coded block=%s isMixed=%d targetnodeid=%d\n",
isHelpful,networkcoding.getName().c_str(),networkcoding.isMixed,
networkcoding.targetNodeId+1);
bool isDone = localDecoder->decode();
if(isDone) {
m_stat.totalObjectReconstructed++;
//this->RegisterObject(networkcoding.parentObjectName);
this->networkcodingobjectsreceived.insert(networkcoding.parentObjectName);
//clean up once constructed no longer need decoder
this->decoder.erase(parentObjectName);
this->cleanUpBlocksInDataStore(parentObjectName);
this->parenttoblockidsmapping.erase(parentObjectName);
SetIcanEvent(m_node, 0, MSG_ROUTING_ICAN_DTNMANAGER_NETWORKCODINGOBJECTCONSTRUCTED, sizeof(networkcoding), &networkcoding);
}
}
void DecodeBufferWorker::Execute () {
CImg<unsigned char> * img = NULL;
string err;
char * metadata = NULL;
err = _decoder(_buffer, _buffsize, &img, &metadata);
if (img == NULL) {
SetErrorMessage(err.c_str());
return;
}
_trans = img->spectrum() == 2 || img->spectrum() == 4;
err = toRGBA(&img);
if (err != "") {
if (img) delete img;
SetErrorMessage(err.c_str());
return;
}
img->_is_shared = true; // don't free image data. need it for callback.
_pixbuf = img->data();
_width = img->width();
_height = img->height();
_channels = 4;
_metadata = metadata;
delete img;
return;
}
std::size_t HexBinaryEncoding::decode(const ByteBuffer& buffer,
ByteBuffer& decodedBuffer)
{
decodedBuffer.clear();
ByteBufferInputStream is(buffer);
Poco::HexBinaryDecoder _decoder(is);
return ByteBufferUtils::copyStreamToBuffer(_decoder, decodedBuffer);
}
