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doubleBuffer

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git-svn-id: svn://elaine/murooma/trunk@34 d8a302eb-03bc-478d-80e4-98257eca68ef
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(no author) 2014-06-29 09:24:30 +00:00
parent fcf5250a47
commit 07d2ef5794
2 changed files with 45 additions and 1 deletions
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7
client.cpp
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@ -18,8 +18,10 @@
#include <condition_variable>
#include <portaudio.h>
#include "chunk.h"
#include "doubleBuffer.h"
DoubleBuffer<int> buffer(5000 / MS);
std::deque<Chunk*> chunks;
std::deque<int> timeDiffs;
std::mutex mtx;
@ -184,7 +186,9 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
// std::cerr << "Chunks: " << chunks->size() << "\n";
mutex.unlock();
age = getAge(*chunk) + timeInfo->outputBufferDacTime*1000;
std::cerr << "age: " << getAge(*chunk) << "\t" << age << "\t" << timeInfo->outputBufferDacTime*1000 << "\n";
int median = buffer.median();
std::cerr << "age: " << getAge(*chunk) << "\t" << age << "\t" << median << "\t" << timeInfo->outputBufferDacTime*1000 << "\n";
if (age > bufferMs + 2*MS)
{
chunks->pop_front();
@ -202,6 +206,7 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
}
else
{
buffer.add(age);
chunks->pop_front();
break;
}

39
doubleBuffer.h Normal file
View file

@ -0,0 +1,39 @@
#ifndef DOUBLE_BUFFER_H
#define DOUBLE_BUFFER_H
#include<deque>
#include<algorithm>
template <class T>
class DoubleBuffer
{
public:
DoubleBuffer(size_t bufferSize) : size(bufferSize)
{
}
void add(const T& element)
{
buffer.push_back(element);
if (buffer.size() > size)
buffer.pop_front();
}
T median()
{
if (buffer.empty())
return 0;
std::deque<T> tmpBuffer(buffer.begin(), buffer.end());
std::sort(tmpBuffer.begin(), tmpBuffer.end());
return tmpBuffer[tmpBuffer.size() / 2];
}
private:
size_t size;
std::deque<T> buffer;
};
#endif