hello,
We have a problem in our demux device getting detected.. we have
writen a program code in c++ in linux. the error that it shows while
compiling is that the demux device does not get detected nor does the
streams. please do help us with this.. and reply immediately .
thank you ,
//including libraries//
#include<stdio.h>
#include<stdlib.h>
#include<pthread.h>
#include<linux/tyoes.h>
#include <unistd.h>
//defining the macros//
#define DEMUX_DEVICE /dev/dvb/adapter0/demux0
#define MEM_START_ADDR 0X3C00000
#define MEM_SIZE 0X1000000
#define THREAD_SLEEP_TIME 10*1000
#define MAX_SECTION_SIZE (4*1024)
static unsigned int mMemSpaceHandle=-1;
static pthread_mutex_t bget_mem_mutex=PTHREAD_MUTEX_INITIALIZER:
static bool thread_status=FALSE;
int *address;
typedef struct
{
int pid;
int BufferSize;
int fd;
pthread_t thread;
int TimeOut;
bool thread_status;
}PcDmxDataType;
void main()
{
ConfigureDevice(int pid,int buffersize,int *error,int *subcrid);
}
void mInitmem()
{
pthread_mutex_lock(&bget_mem_mutex);
bpool(MEM_START_ADDR,MEM_SIZE);
pthread_mutex_unlock(&bget_mem_mutex);
}
int mMalloc(size_t size)
{
pthread_mutex_lock(&bget_mem_mutex);
*address=bget(size);
pthread_mutex_unlock(&bget_mem_mutex);
return address;
}
void mFree()
{
pthread_mutex_lock(&bget_mem_mutex);
brel(address);
pthread_mutex_unlock(&bget_mem_mutex);
}
void ConfigureDevice(int pid,int buffersize,int *error,int *subcrid)
{ int fd;
PcDmxDataType* Filter;
if(fd=(open(DEMUX_DEVICE,(O_RDWR|O_NONBLOCK)))<0);
{
perror("error in opening DEMUX_DEVICE");
return mMemSpaceHandle;
}
else
{
if (ioctl(fd, DMX_SET_BUFFER_SIZE, BufferSize) == -1)
{
printf("Error while setting the buffer size!!!\n");
}
else
{
Filter = (PcDmxDataType*)mMallocMem(sizeof(PcDmxDataType));
if(Filter != NULL)
{
struct dmx_pes_filter_params fp;
memset(Filter,0,DMX_SET_BUFFER_SIZE);
fp.input = DMX_IN_FRONTEND;
fp.output = DMX_OUT_TAP;
fp.pes_type = DMX_PES_OTHER;
fp.flags = DMX_IMMEDIATE_START;
fp.pid = pid;
if (ioctl(fd,DMX_SET_FILTER,&fp) < 0)
{
mFree();
Filter=NULL;
perror("error in setting the filter");
}
else
{
pthread_t p;
Filter->thread_status = FALSE;
pthread_create(&p, NULL, pcdmx_pes_thread, (void*)Filter);
Filter->thread = p;
}
}
}
close(fd);
}
}
void *pcdmx_pes_thread(void* arg)
{
PcDmxDataType *Filter = (PcDmxDataType*)arg;
int *buf;
int bytes;
int length=0;
while(!Filter->thread_status)
{
usleep(THREAD_SLEEP_TIME);
buf = (int*)mMallocMem(MAX_SECTION_SIZE);
if(buf == NULL) continue;
bytes = read(Filter->fd, buf, MAX_SECTION_SIZE);
length=length+bytes;
if (bytes < 0)
{
mFreeMem(buf);
}
}
void *handle=NULL;
handle=fopen("/home/lakshmi/1stapp.txt","wb");
fwrite(handle,size(int),length,buf);
fclose(handle);
}
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