buffer.c

#include"buffer.h"

struct BufferAll allBuf;

void initBuffer(struct Buffer *buffer,int bufferSize,unsigned char *tmp)
{
	buffer->bufferSize=bufferSize;
	buffer->data=tmp;
	buffer->flag=0;
	buffer->free=buffer->bufferSize;
	buffer->h=0;
	buffer->r=0;
	return; 
}
int putBuffer(struct Buffer *buffer,unsigned char data)
{
	//Ğ´ÈëÊı¾İ 
	if (buffer->free==0)
	{
		buffer->flag=1;
		return 0;
	}
	buffer->data[buffer->r]=data;
	buffer->r++;
	buffer->r%=buffer->bufferSize;
	buffer->free--;
	
	//»½ĞÑÈÎÎñ 
	/*if (buffer->task!=0)
		if (buffer->task->flags!=TASK_USING)
			runTask(buffer->task);*/
	return 1;
}
int getBuffer(struct Buffer *buffer,unsigned char *data)
{
	if (buffer->free==buffer->bufferSize)
		return 0;
	*data=buffer->data[buffer->h];
	buffer->h++;
	buffer->h%=buffer->bufferSize;
	buffer->free++;
	return 1;
}
int fullCountBuffer(struct Buffer *buffer)
{
	return buffer->bufferSize-buffer->free;
}
int emptyCountBuffer(struct Buffer *buffer)
{
	return buffer->free;
}