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UDP sink plugin: block output at zero if read and write frame pointers are equal

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This commit is contained in:
f4exb 2017-08-25 01:16:58 +02:00
parent 1b2df9f0fc
commit 7277757b7c
1 changed files with 19 additions and 4 deletions
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15
plugins/channeltx/udpsink/udpsinkudphandler.cpp
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@ -135,16 +135,31 @@ void UDPSinkUDPHandler::moveData(char *blk)
} }
void UDPSinkUDPHandler::readSample(FixReal &t) void UDPSinkUDPHandler::readSample(FixReal &t)
{
if (m_readFrameIndex == m_writeIndex) // block until more writes
{
t = 0;
}
else
{ {
memcpy(&t, &m_udpBuf[m_readFrameIndex][m_readIndex], sizeof(FixReal)); memcpy(&t, &m_udpBuf[m_readFrameIndex][m_readIndex], sizeof(FixReal));
advanceReadPointer((int) sizeof(FixReal)); advanceReadPointer((int) sizeof(FixReal));
} }
}
void UDPSinkUDPHandler::readSample(Sample &s) void UDPSinkUDPHandler::readSample(Sample &s)
{
if (m_readFrameIndex == m_writeIndex) // block until more writes
{
s.m_real = 0;
s.m_imag = 0;
}
else
{ {
memcpy(&s, &m_udpBuf[m_readFrameIndex][m_readIndex], sizeof(Sample)); memcpy(&s, &m_udpBuf[m_readFrameIndex][m_readIndex], sizeof(Sample));
advanceReadPointer((int) sizeof(Sample)); advanceReadPointer((int) sizeof(Sample));
} }
}
void UDPSinkUDPHandler::advanceReadPointer(int nbBytes) void UDPSinkUDPHandler::advanceReadPointer(int nbBytes)
{ {