mutexbuff.cpp

来自「G.723在ARM上的实现。实现平台为Linux2.4.8+ Intel Xsc」· C++ 代码 · 共 75 行

#include "mutexbuff.h"

#include <string.h>
#include <iostream>
using namespace std;

MutexBuff::MutexBuff( int length, int num)
	
{
	len=length;
	
	frame=num;
	buff=(unsigned char*)malloc(len);
	framesize=len/frame;
	
}
MutexBuff::~MutexBuff()
{
	free(buff);

}
void MutexBuff::writebuff(int index,unsigned char *srcbuf)
{
	int i;
	unsigned char *baseaddr;
	
	i=index;
	lock();
	baseaddr=buff+framesize*i;
	memcpy(baseaddr,srcbuf,framesize);
	dataflag[i%frame]=1;
	signal();
	unlock();
}
void MutexBuff::readbuff(int index,unsigned char *dstbuf)
{
	int i;
	unsigned char *baseaddr;
	
	i=index;
	
	lock();
	wait();
	baseaddr=buff+framesize*i;
	memcpy(dstbuf,baseaddr,framesize);
	dataflag[i%frame]=0;
	unlock();
}
void MutexBuff::testdata(int index)
{	
	int i;
	unsigned char *base;
	base=buff+framesize*index;
	printf("framesize %d\n",framesize);
	printf("buffindex %d\n",index);
	printf("buffbaseaddr %x\n",buff);
	printf("currentaddr %x\n",base);
	for(i=0;i<framesize;i++)
	printf("mutexbuff test data %d \n",base[i]);

}
void MutexBuff::clearbuff(int index)
{
	int i;
	i=index;
	unsigned char *base;
	base=buff+i*framesize;
	memset(base,0,framesize);


}