// ---------------------------------------------------------
// Update the texture info of a sender
// Used for example when a sender's texture changes size
// ---------------------------------------------------------
bool spoutSenderNames::UpdateSender(const char *sendername, unsigned int width, unsigned int height, HANDLE hSharehandle, DWORD dwFormat)
{
std::string namestring = sendername;
if (m_senders->find(namestring) == m_senders->end()) {
// Create or open a shared memory map for this sender - allocate enough for the texture info
SpoutSharedMemory *senderInfoMem = new SpoutSharedMemory();
SpoutCreateResult result = senderInfoMem->Create(sendername, sizeof(SharedTextureInfo));
if(result == SPOUT_CREATE_FAILED) {
delete senderInfoMem;
m_senderNames.Unlock();
return false;
}
(*m_senders)[namestring] = senderInfoMem;
}
// Save the info for this sender in the sender shared memory map
if(!SetSenderInfo(sendername, width, height, hSharehandle, dwFormat)) {
return false;
}
return true;
} // end UpdateSender
void spoutSenderNames::cleanSenderSet()
{
if(!CreateSenderSet()) {
return;
}
char *pBuf = m_senderNames.Lock();
if (!pBuf) {
return;
}
std::set<std::string> SenderNames;
readSenderSetFromBuffer(pBuf, SenderNames, m_MaxSenders);
bool changed = false;
for (auto itr = SenderNames.begin(); itr != SenderNames.end(); )
{
// It's one of ours, so thats fine
if (m_senders->find(*itr) != m_senders->end())
{
itr++;
continue;
}
SpoutSharedMemory mem;
// This isn't found, we clean it up
if (!mem.Open((*itr).c_str()))
{
changed = true;
SenderNames.erase(itr++);
}
else
{
++itr;
}
}
if (changed)
{
writeBufferFromSenderSet(SenderNames, pBuf, m_MaxSenders);
}
m_senderNames.Unlock();
}
// Return current sharing handle, width and height of a Sender
// A receiver checks this all the time so it has to be compact
// Does not have to be the info of this instance
// so the creation pointer and handle may not be known
bool spoutSenderNames::getSharedInfo(const char* sharedMemoryName, SharedTextureInfo* info)
{
SpoutSharedMemory mem;
// Possibly faster because the functon is called all the time
if(mem.Open(sharedMemoryName)) {
char *pBuf = mem.Lock();
if(pBuf) {
memcpy((void *)info, (void *)pBuf, sizeof(SharedTextureInfo) );
mem.Unlock();
return true;
}
}
return false;
} // end getSharedInfo
// Return current sharing handle, width and height of a Sender
// A receiver checks this all the time so it has to be compact
// Does not have to be the info of this instance
// so the creation pointer and handle may not be known
bool spoutSenderNames::getSharedInfo(const char* sharedMemoryName, SharedTextureInfo* info)
{
SpoutSharedMemory mem;
bool result = mem.Open(sharedMemoryName);
if (!result)
return false;
char *pBuf = mem.Lock();
if(!pBuf) {
return false;
}
memcpy((void *)info, (void *)pBuf, sizeof(SharedTextureInfo) );
mem.Unlock();
return true;
} // end getSharedInfo
// 12.06.15 - Added to allow direct modification of a sender's information in shared memory
bool spoutSenderNames::setSharedInfo(const char* sharedMemoryName, SharedTextureInfo* info)
{
SpoutSharedMemory mem;
bool result = mem.Open(sharedMemoryName);
if (!result) {
printf(" memory not found\n");
return false;
}
char *pBuf = mem.Lock();
if (!pBuf) {
printf(" buffer not locked\n");
return false;
}
memcpy((void *)pBuf, (void *)info, sizeof(SharedTextureInfo) );
mem.Unlock();
return true;
} // end getSharedInfo
