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This commit is contained in:
Jonathan Naylor
2017-11-22 13:41:10 +00:00
parent 036d8b3d2d
commit 982b0992b3
1 changed files with 16 additions and 7 deletions
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23
JitterBuffer.cpp
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@@ -60,7 +60,7 @@ bool CJitterBuffer::addData(const unsigned char* data, unsigned int sequenceNumb
unsigned int headSequenceNumber = m_headSequenceNumber % m_topSequenceNumber;
unsigned int tailSequenceNumber = (m_headSequenceNumber + m_blockCount) % m_topSequenceNumber;
// Is the data out of sequence?
if (headSequenceNumber < tailSequenceNumber) {
if (sequenceNumber < headSequenceNumber || sequenceNumber >= tailSequenceNumber)
@@ -70,14 +70,20 @@ bool CJitterBuffer::addData(const unsigned char* data, unsigned int sequenceNumb
return false;
}
unsigned int number = sequenceNumber - headSequenceNumber;
unsigned int number;
if (sequenceNumber >= headSequenceNumber)
number = sequenceNumber - headSequenceNumber;
else
number = (sequenceNumber + m_blockCount) - headSequenceNumber;;
unsigned int index = (m_headSequenceNumber + number) % m_blockCount;
// Do we already have the data?
if (m_buffer[number].m_used)
if (m_buffer[index].m_used)
return false;
::memcpy(m_buffer[number].m_data, data, m_blockSize);
m_buffer[number].m_used = true;
::memcpy(m_buffer[index].m_data, data, m_blockSize);
m_buffer[index].m_used = true;
if (!m_timer.isRunning())
m_timer.start();
@@ -98,8 +104,11 @@ JB_STATUS CJitterBuffer::getData(unsigned char* data)
if (m_headSequenceNumber > sequenceNumber)
return JBS_NO_DATA;
if (m_buffer[m_headSequenceNumber].m_used) {
::memcpy(data, m_buffer[m_headSequenceNumber].m_data, m_blockSize);
unsigned int head = m_headSequenceNumber % m_blockCount;
if (m_buffer[head].m_used) {
::memcpy(data, m_buffer[head].m_data, m_blockSize);
m_buffer[head].m_used = false;
m_headSequenceNumber++;