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//
// C++ Implementation: k9decodethread
//
// Description:
//
//
// Author: Jean-Michel PETIT <k9copy@free.fr>, (C) 2006
//
// Copyright: See COPYING file that comes with this distribution
//
//
#include "k9decodethread.h"
k9DecodeThread::k9DecodeThread()
{
m_decoder=new kDecMPEG2(this);
noData=FALSE;
}
k9DecodeThread::~k9DecodeThread()
{
delete m_decoder;
}
void k9DecodeThread::clear() {
m_fifo.clear();
wDataRead.wakeAll();
wDataReady.wakeAll();
}
void k9DecodeThread::addData(uchar *data,uint size) {
while (1) {
if (m_fifo.freespace()>=size) {
m_fifo.enqueue(data,size);
wDataReady.wakeAll();
break;
} else
wDataRead.wait();
}
}
int k9DecodeThread::readData(uchar * data,uint size) {
uint size2=size;
uint32_t readSize=0,s=0;
while (1) {
// is there data in the buffer?
if (m_fifo.count() >0) {
// s= size of data that we will read (maximum = size)
s=(m_fifo.count()) <size2 ? (m_fifo.count()) : size2;
// increments the number of readen bytes
readSize+=s;
// decrements the number of max bytes to read
size2-=s;
//moves bytes from buffer to output
m_fifo.dequeue(data,s);
//moves the position of output buffer to receive next bytes
data+=s;
//there's now free space in input buffer, we can wake the injection thread
wDataRead.wakeAll();
}
// break the loop if injection thread terminated or we got what we want (size bytes)
// oterwise, we're waiting for datas
if(noData || (m_fifo.count() >=size2)) {
break;
} else
wDataReady.wait();
}
// if there's datas in input buffer and we did not get all what we wanted, we take them.
s= (m_fifo.count()) <size2 ? (m_fifo.count()) : size2;
readSize+=s;
if (s>0 )
m_fifo.dequeue(data,s);
wDataRead.wakeAll();
return readSize;
}
void k9DecodeThread::setNoData() {
noData=true;
wDataRead.wakeAll();
wDataReady.wakeAll();
}
void k9DecodeThread::sleepms(int _ms) {
msleep(_ms);
}
void k9DecodeThread::run() {
noData=FALSE;
m_decoder->start();
while (1) {
int count=2048;
uchar buffer[count];
uint32_t size=readData(buffer,count);
if (size==0)
break;
m_decoder->decode(buffer ,buffer+size,0);
}
m_decoder->stop();
}
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