59 lines
920 B
C++
59 lines
920 B
C++
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#include "precomp.h"
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DevMediaQueue::DevMediaQueue ( void )
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{
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m_uBegin = 0;
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m_uEnd = 0;
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m_uMaxNum = 0;
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}
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DevMediaQueue::~DevMediaQueue ( void )
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{
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if (m_paPackets)
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{
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MemFree ((PVOID) m_paPackets);
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m_paPackets = NULL;
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}
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}
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void DevMediaQueue::SetSize ( UINT uMaxNum )
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{
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m_uMaxNum = uMaxNum + 8;
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// Allocate zero-filled media packets
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m_paPackets = (MediaPacket **) MemAlloc (m_uMaxNum * sizeof (MediaPacket *));
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}
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void DevMediaQueue::Put ( MediaPacket * p )
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{
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m_paPackets[m_uEnd++] = p;
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m_uEnd %= m_uMaxNum;
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}
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MediaPacket * DevMediaQueue::Get ( void )
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{
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MediaPacket * p = NULL;
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if (m_uBegin != m_uEnd)
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{
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p = m_paPackets[m_uBegin];
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m_paPackets[m_uBegin++] = NULL;
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m_uBegin %= m_uMaxNum;
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}
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return p;
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}
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MediaPacket * DevMediaQueue::Peek ( void )
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{
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return ((m_uBegin != m_uEnd) ? m_paPackets[m_uBegin] : NULL);
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}
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