public ByteBuffer LockBuffer(IntegerPointer pBytesAvailable) {
if (m_pBuffer == null) {
return null;
}
if (m_bBufferLocked) return null;
m_bBufferLocked = true;
if (pBytesAvailable != null) pBytesAvailable.value = GetBufferBytesAvailable();
pBufferPointer.reset(m_pBuffer, m_nBufferTail);
return pBufferPointer;
}
public int AddDataFromInputSource(InputSource pInputSource, int nMaxBytes) throws IOException {
// error check the parameters
if (pInputSource == null) throw new JMACException("Bad Parameters");
// initialize
int pBytesAdded = 0;
int nBytesRead = 0;
// lock the buffer
m_nAddDataFromInputSourceBytesAvailavle.value = 0;
ByteBuffer pBuffer = LockBuffer(m_nAddDataFromInputSourceBytesAvailavle);
// calculate the 'ideal' number of bytes
int nIdealBytes = m_spAPECompressCreate.GetFullFrameBytes() - (m_nBufferTail - m_nBufferHead);
System.out.println(nIdealBytes);
if (nIdealBytes > 0) {
// get the data
int nBytesToAdd = m_nAddDataFromInputSourceBytesAvailavle.value;
if (nMaxBytes > 0) {
if (nBytesToAdd > nMaxBytes) nBytesToAdd = nMaxBytes;
}
if (nBytesToAdd > nIdealBytes) nBytesToAdd = nIdealBytes;
// always make requests along block boundaries
while ((nBytesToAdd % m_wfeInput.nBlockAlign) != 0) nBytesToAdd--;
int nBlocksToAdd = nBytesToAdd / m_wfeInput.nBlockAlign;
// get data
int nBlocksAdded = pInputSource.GetData(pBuffer, nBlocksToAdd);
nBytesRead = (nBlocksAdded * m_wfeInput.nBlockAlign);
// store the bytes read
pBytesAdded = nBytesRead;
}
// unlock the data and process
UnlockBuffer(nBytesRead, true);
return pBytesAdded;
}
public void AddData(byte[] pData, int nBytes) throws IOException {
int nBytesDone = 0;
while (nBytesDone < nBytes) {
// lock the buffer
m_nAddDataBytesAvailable.value = 0;
ByteBuffer pBuffer = LockBuffer(m_nAddDataBytesAvailable);
if (pBuffer == null || m_nAddDataBytesAvailable.value <= 0)
throw new JMACException("Error Undefined");
// calculate how many bytes to copy and add that much to the buffer
int nBytesToProcess = Math.min(m_nAddDataBytesAvailable.value, nBytes - nBytesDone);
pBuffer.append(pData, nBytesDone, nBytesToProcess);
// unlock the buffer (fail if not successful)
UnlockBuffer(nBytesToProcess);
// update our progress
nBytesDone += nBytesToProcess;
}
}
